graal-jvmci-8: src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp annotate

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 3777:e8b0b0392037

7046182: G1: remove unnecessary iterations over the collection set Summary: Remove two unnecessary iterations over the collection set which are supposed to prepare the RSet's of the CSet regions for parallel iterations (we'll make sure this is done incrementally). I'll piggyback on this CR the removal of the G1_REM_SET_LOGGING code. Reviewed-by: brutisso, johnc

author	tonyp
date	Tue, 21 Jun 2011 15:23:07 -0400
parents	c3f1170908be
children	5f6f2615433a

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 1991 diff changeset	2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	4 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	7 * published by the Free Software Foundation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	8 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	13 * accompanied this code).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	14 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1394 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1394 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1394 diff changeset	21 * questions.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	22 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	23 */
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	26 #include "gc_implementation/g1/concurrentG1Refine.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	27 #include "gc_implementation/g1/concurrentMark.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	28 #include "gc_implementation/g1/concurrentMarkThread.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	30 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	31 #include "gc_implementation/g1/heapRegionRemSet.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	32 #include "gc_implementation/shared/gcPolicyCounters.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	33 #include "runtime/arguments.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	34 #include "runtime/java.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	35 #include "runtime/mutexLocker.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1833 diff changeset	36 #include "utilities/debug.hpp"
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	37
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	38 #define PREDICTIONS_VERBOSE 0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	39
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	40 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	41
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	42 // Different defaults for different number of GC threads
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	43 // They were chosen by running GCOld and SPECjbb on debris with different
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	44 // numbers of GC threads and choosing them based on the results
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	45
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	46 // all the same
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	47 static double rs_length_diff_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	48 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	49 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	50
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	51 static double cost_per_card_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	52 0.01, 0.005, 0.005, 0.003, 0.003, 0.002, 0.002, 0.0015
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	53 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	54
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	55 // all the same
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	56 static double fully_young_cards_per_entry_ratio_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	57 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	58 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	59
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	60 static double cost_per_entry_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	61 0.015, 0.01, 0.01, 0.008, 0.008, 0.0055, 0.0055, 0.005
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	62 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	63
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	64 static double cost_per_byte_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	65 0.00006, 0.00003, 0.00003, 0.000015, 0.000015, 0.00001, 0.00001, 0.000009
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	66 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	67
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	68 // these should be pretty consistent
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	69 static double constant_other_time_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	70 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	71 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	72
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	73
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	74 static double young_other_cost_per_region_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	75 0.3, 0.2, 0.2, 0.15, 0.15, 0.12, 0.12, 0.1
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	76 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	77
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	78 static double non_young_other_cost_per_region_ms_defaults[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	79 1.0, 0.7, 0.7, 0.5, 0.5, 0.42, 0.42, 0.30
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	80 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	81
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	82 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	83
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	84 // Help class for avoiding interleaved logging
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	85 class LineBuffer: public StackObj {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	86
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	87 private:
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	88 static const int BUFFER_LEN = 1024;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	89 static const int INDENT_CHARS = 3;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	90 char _buffer[BUFFER_LEN];
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	91 int _indent_level;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	92 int _cur;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	93
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	94 void vappend(const char* format, va_list ap) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	95 int res = vsnprintf(&_buffer[_cur], BUFFER_LEN - _cur, format, ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	96 if (res != -1) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	97 _cur += res;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	98 } else {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	99 DEBUG_ONLY(warning("buffer too small in LineBuffer");)
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	100 _buffer[BUFFER_LEN -1] = 0;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	101 _cur = BUFFER_LEN; // vsnprintf above should not add to _buffer if we are called again
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	102 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	103 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	104
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	105 public:
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	106 explicit LineBuffer(int indent_level): _indent_level(indent_level), _cur(0) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	107 for (; (_cur < BUFFER_LEN && _cur < (_indent_level * INDENT_CHARS)); _cur++) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	108 _buffer[_cur] = ' ';
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	109 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	110 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	111
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	112 #ifndef PRODUCT
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	113 ~LineBuffer() {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	114 assert(_cur == _indent_level * INDENT_CHARS, "pending data in buffer - append_and_print_cr() not called?");
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	115 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	116 #endif
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	117
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	118 void append(const char* format, ...) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	119 va_list ap;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	120 va_start(ap, format);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	121 vappend(format, ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	122 va_end(ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	123 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	124
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	125 void append_and_print_cr(const char* format, ...) {
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	126 va_list ap;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	127 va_start(ap, format);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	128 vappend(format, ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	129 va_end(ap);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	130 gclog_or_tty->print_cr("%s", _buffer);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	131 _cur = _indent_level * INDENT_CHARS;
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	132 }
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	133 };
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	134
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	135 G1CollectorPolicy::G1CollectorPolicy() :
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	136 _parallel_gc_threads(G1CollectedHeap::use_parallel_gc_threads()
8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	137 ? ParallelGCThreads : 1),
8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	138
8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	139
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	140 _n_pauses(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	141 _recent_CH_strong_roots_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	142 _recent_G1_strong_roots_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	143 _recent_evac_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	144 _recent_pause_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	145 _recent_rs_sizes(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	146 _recent_gc_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	147 _all_pause_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	148 _stop_world_start(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	149 _all_stop_world_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	150 _all_yield_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	151
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	152 _all_mod_union_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	153
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	154 _summary(new Summary()),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	155
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	156 #ifndef PRODUCT
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	157 _cur_clear_ct_time_ms(0.0),
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	158 _min_clear_cc_time_ms(-1.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	159 _max_clear_cc_time_ms(-1.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	160 _cur_clear_cc_time_ms(0.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	161 _cum_clear_cc_time_ms(0.0),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	162 _num_cc_clears(0L),
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	163 #endif
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	164
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	165 _region_num_young(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	166 _region_num_tenured(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	167 _prev_region_num_young(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	168 _prev_region_num_tenured(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	169
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	170 _aux_num(10),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	171 _all_aux_times_ms(new NumberSeq[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	172 _cur_aux_start_times_ms(new double[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	173 _cur_aux_times_ms(new double[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	174 _cur_aux_times_set(new bool[_aux_num]),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	175
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	176 _concurrent_mark_init_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	177 _concurrent_mark_remark_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	178 _concurrent_mark_cleanup_times_ms(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	179
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	180 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	181
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	182 _alloc_rate_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	183 _prev_collection_pause_end_ms(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	184 _pending_card_diff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	185 _rs_length_diff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	186 _cost_per_card_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	187 _fully_young_cards_per_entry_ratio_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	188 _partially_young_cards_per_entry_ratio_seq(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	189 new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	190 _cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	191 _partially_young_cost_per_entry_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	192 _cost_per_byte_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	193 _cost_per_byte_ms_during_cm_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	194 _constant_other_time_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	195 _young_other_cost_per_region_ms_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	196 _non_young_other_cost_per_region_ms_seq(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	197 new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	198
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	199 _pending_cards_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	200 _scanned_cards_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	201 _rs_lengths_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	202
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	203 _pause_time_target_ms((double) MaxGCPauseMillis),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	204
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	205 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	206
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	207 _in_young_gc_mode(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	208 _full_young_gcs(true),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	209 _full_young_pause_num(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	210 _partial_young_pause_num(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	211
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	212 _during_marking(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	213 _in_marking_window(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	214 _in_marking_window_im(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	215
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	216 _known_garbage_ratio(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	217 _known_garbage_bytes(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	218
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	219 _young_gc_eff_seq(new TruncatedSeq(TruncatedSeqLength)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	220
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	221 _recent_prev_end_times_for_all_gcs_sec(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	222
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	223 _recent_CS_bytes_used_before(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	224 _recent_CS_bytes_surviving(new TruncatedSeq(NumPrevPausesForHeuristics)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	225
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	226 _recent_avg_pause_time_ratio(0.0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	227 _num_markings(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	228 _n_marks(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	229 _n_pauses_at_mark_end(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	230
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	231 _all_full_gc_times_ms(new NumberSeq()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	232
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	233 // G1PausesBtwnConcMark defaults to -1
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	234 // so the hack is to do the cast QQQ FIXME
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	235 _pauses_btwn_concurrent_mark((size_t)G1PausesBtwnConcMark),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	236 _n_marks_since_last_pause(0),
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	237 _initiate_conc_mark_if_possible(false),
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	238 _during_initial_mark_pause(false),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	239 _should_revert_to_full_young_gcs(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	240 _last_full_young_gc(false),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	241
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	242 _eden_bytes_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	243 _survivor_bytes_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	244 _capacity_before_gc(0),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	245
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	246 _prev_collection_pause_used_at_end_bytes(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	247
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	248 _collection_set(NULL),
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	249 _collection_set_size(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	250 _collection_set_bytes_used_before(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	251
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	252 // Incremental CSet attributes
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	253 _inc_cset_build_state(Inactive),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	254 _inc_cset_head(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	255 _inc_cset_tail(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	256 _inc_cset_size(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	257 _inc_cset_young_index(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	258 _inc_cset_bytes_used_before(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	259 _inc_cset_max_finger(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	260 _inc_cset_recorded_young_bytes(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	261 _inc_cset_recorded_rs_lengths(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	262 _inc_cset_predicted_elapsed_time_ms(0.0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	263 _inc_cset_predicted_bytes_to_copy(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	264
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	265 #ifdef _MSC_VER // the use of 'this' below gets a warning, make it go away
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	266 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	267 #endif // _MSC_VER
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	268
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	269 _short_lived_surv_rate_group(new SurvRateGroup(this, "Short Lived",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	270 G1YoungSurvRateNumRegionsSummary)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	271 _survivor_surv_rate_group(new SurvRateGroup(this, "Survivor",
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	272 G1YoungSurvRateNumRegionsSummary)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	273 // add here any more surv rate groups
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	274 _recorded_survivor_regions(0),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	275 _recorded_survivor_head(NULL),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	276 _recorded_survivor_tail(NULL),
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	277 _survivors_age_table(true),
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	278
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	279 _gc_overhead_perc(0.0)
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	280
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	281 {
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	282 // Set up the region size and associated fields. Given that the
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	283 // policy is created before the heap, we have to set this up here,
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	284 // so it's done as soon as possible.
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	285 HeapRegion::setup_heap_region_size(Arguments::min_heap_size());
1261 0414c1049f15 6923991: G1: improve scalability of RSet scanning iveresov parents: 1111 diff changeset	286 HeapRegionRemSet::setup_remset_size();
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	287
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	288 // Verify PLAB sizes
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	289 const uint region_size = HeapRegion::GrainWords;
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	290 if (YoungPLABSize > region_size \|\| OldPLABSize > region_size) {
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	291 char buffer[128];
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	292 jio_snprintf(buffer, sizeof(buffer), "%sPLABSize should be at most %u",
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	293 OldPLABSize > region_size ? "Old" : "Young", region_size);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	294 vm_exit_during_initialization(buffer);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	295 }
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	296
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	297 _recent_prev_end_times_for_all_gcs_sec->add(os::elapsedTime());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	298 _prev_collection_pause_end_ms = os::elapsedTime() * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	299
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	300 _par_last_gc_worker_start_times_ms = new double[_parallel_gc_threads];
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	301 _par_last_ext_root_scan_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	302 _par_last_mark_stack_scan_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	303
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	304 _par_last_update_rs_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	305 _par_last_update_rs_processed_buffers = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	306
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	307 _par_last_scan_rs_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	308
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	309 _par_last_obj_copy_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	310
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	311 _par_last_termination_times_ms = new double[_parallel_gc_threads];
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	312 _par_last_termination_attempts = new double[_parallel_gc_threads];
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	313 _par_last_gc_worker_end_times_ms = new double[_parallel_gc_threads];
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	314 _par_last_gc_worker_times_ms = new double[_parallel_gc_threads];
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	315
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	316 // start conservatively
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	317 _expensive_region_limit_ms = 0.5 * (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	318
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	319 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	320
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	321 int index;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	322 if (ParallelGCThreads == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	323 index = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	324 else if (ParallelGCThreads > 8)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	325 index = 7;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	326 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	327 index = ParallelGCThreads - 1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	328
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	329 _pending_card_diff_seq->add(0.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	330 _rs_length_diff_seq->add(rs_length_diff_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	331 _cost_per_card_ms_seq->add(cost_per_card_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	332 _fully_young_cards_per_entry_ratio_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	333 fully_young_cards_per_entry_ratio_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	334 _cost_per_entry_ms_seq->add(cost_per_entry_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	335 _cost_per_byte_ms_seq->add(cost_per_byte_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	336 _constant_other_time_ms_seq->add(constant_other_time_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	337 _young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	338 young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	339 _non_young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	340 non_young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	341
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	342 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	343
1610 79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	344 // Below, we might need to calculate the pause time target based on
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	345 // the pause interval. When we do so we are going to give G1 maximum
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	346 // flexibility and allow it to do pauses when it needs to. So, we'll
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	347 // arrange that the pause interval to be pause time target + 1 to
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	348 // ensure that a) the pause time target is maximized with respect to
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	349 // the pause interval and b) we maintain the invariant that pause
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	350 // time target < pause interval. If the user does not want this
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	351 // maximum flexibility, they will have to set the pause interval
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	352 // explicitly.
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	353
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	354 // First make sure that, if either parameter is set, its value is
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	355 // reasonable.
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	356 if (!FLAG_IS_DEFAULT(MaxGCPauseMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	357 if (MaxGCPauseMillis < 1) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	358 vm_exit_during_initialization("MaxGCPauseMillis should be "
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	359 "greater than 0");
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	360 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	361 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	362 if (!FLAG_IS_DEFAULT(GCPauseIntervalMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	363 if (GCPauseIntervalMillis < 1) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	364 vm_exit_during_initialization("GCPauseIntervalMillis should be "
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	365 "greater than 0");
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	366 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	367 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	368
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	369 // Then, if the pause time target parameter was not set, set it to
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	370 // the default value.
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	371 if (FLAG_IS_DEFAULT(MaxGCPauseMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	372 if (FLAG_IS_DEFAULT(GCPauseIntervalMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	373 // The default pause time target in G1 is 200ms
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	374 FLAG_SET_DEFAULT(MaxGCPauseMillis, 200);
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	375 } else {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	376 // We do not allow the pause interval to be set without the
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	377 // pause time target
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	378 vm_exit_during_initialization("GCPauseIntervalMillis cannot be set "
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	379 "without setting MaxGCPauseMillis");
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	380 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	381 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	382
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	383 // Then, if the interval parameter was not set, set it according to
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	384 // the pause time target (this will also deal with the case when the
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	385 // pause time target is the default value).
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	386 if (FLAG_IS_DEFAULT(GCPauseIntervalMillis)) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	387 FLAG_SET_DEFAULT(GCPauseIntervalMillis, MaxGCPauseMillis + 1);
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	388 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	389
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	390 // Finally, make sure that the two parameters are consistent.
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	391 if (MaxGCPauseMillis >= GCPauseIntervalMillis) {
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	392 char buffer[256];
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	393 jio_snprintf(buffer, 256,
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	394 "MaxGCPauseMillis (%u) should be less than "
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	395 "GCPauseIntervalMillis (%u)",
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	396 MaxGCPauseMillis, GCPauseIntervalMillis);
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	397 vm_exit_during_initialization(buffer);
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	398 }
79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	399
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	400 double max_gc_time = (double) MaxGCPauseMillis / 1000.0;
1610 79107c3a6bd5 6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent tonyp parents: 1579 diff changeset	401 double time_slice = (double) GCPauseIntervalMillis / 1000.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	402 _mmu_tracker = new G1MMUTrackerQueue(time_slice, max_gc_time);
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	403 _sigma = (double) G1ConfidencePercent / 100.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	404
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	405 // start conservatively (around 50ms is about right)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	406 _concurrent_mark_init_times_ms->add(0.05);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	407 _concurrent_mark_remark_times_ms->add(0.05);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	408 _concurrent_mark_cleanup_times_ms->add(0.20);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	409 _tenuring_threshold = MaxTenuringThreshold;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	410
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	411 // if G1FixedSurvivorSpaceSize is 0 which means the size is not
b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	412 // fixed, then _max_survivor_regions will be calculated at
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	413 // calculate_young_list_target_length during initialization
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	414 _max_survivor_regions = G1FixedSurvivorSpaceSize / HeapRegion::GrainBytes;
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	415
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	416 assert(GCTimeRatio > 0,
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	417 "we should have set it to a default value set_g1_gc_flags() "
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	418 "if a user set it to 0");
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	419 _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio));
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	420
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	421 initialize_all();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	422 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	423
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	424 // Increment "i", mod "len"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	425 static void inc_mod(int& i, int len) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	426 i++; if (i == len) i = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	427 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	428
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	429 void G1CollectorPolicy::initialize_flags() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	430 set_min_alignment(HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	431 set_max_alignment(GenRemSet::max_alignment_constraint(rem_set_name()));
547 1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	432 if (SurvivorRatio < 1) {
1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	433 vm_exit_during_initialization("Invalid survivor ratio specified");
1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	434 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	435 CollectorPolicy::initialize_flags();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	436 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	437
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	438 // The easiest way to deal with the parsing of the NewSize /
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	439 // MaxNewSize / etc. parameteres is to re-use the code in the
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	440 // TwoGenerationCollectorPolicy class. This is similar to what
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	441 // ParallelScavenge does with its GenerationSizer class (see
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	442 // ParallelScavengeHeap::initialize()). We might change this in the
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	443 // future, but it's a good start.
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	444 class G1YoungGenSizer : public TwoGenerationCollectorPolicy {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	445 size_t size_to_region_num(size_t byte_size) {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	446 return MAX2((size_t) 1, byte_size / HeapRegion::GrainBytes);
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	447 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	448
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	449 public:
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	450 G1YoungGenSizer() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	451 initialize_flags();
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	452 initialize_size_info();
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	453 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	454
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	455 size_t min_young_region_num() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	456 return size_to_region_num(_min_gen0_size);
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	457 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	458 size_t initial_young_region_num() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	459 return size_to_region_num(_initial_gen0_size);
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	460 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	461 size_t max_young_region_num() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	462 return size_to_region_num(_max_gen0_size);
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	463 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	464 };
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	465
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	466 void G1CollectorPolicy::init() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	467 // Set aside an initial future to_space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	468 _g1 = G1CollectedHeap::heap();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	469
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	470 assert(Heap_lock->owned_by_self(), "Locking discipline.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	471
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	472 initialize_gc_policy_counters();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	473
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	474 if (G1Gen) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	475 _in_young_gc_mode = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	476
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	477 G1YoungGenSizer sizer;
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	478 size_t initial_region_num = sizer.initial_young_region_num();
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	479
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	480 if (UseAdaptiveSizePolicy) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	481 set_adaptive_young_list_length(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	482 _young_list_fixed_length = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	483 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	484 set_adaptive_young_list_length(false);
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	485 _young_list_fixed_length = initial_region_num;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	486 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	487 _free_regions_at_end_of_collection = _g1->free_regions();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	488 calculate_young_list_min_length();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	489 guarantee( _young_list_min_length == 0, "invariant, not enough info" );
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	490 calculate_young_list_target_length();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	491 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	492 _young_list_fixed_length = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	493 _in_young_gc_mode = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	494 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	495
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	496 // We may immediately start allocating regions and placing them on the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	497 // collection set list. Initialize the per-collection set info
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	498 start_incremental_cset_building();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	499 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	500
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	501 // Create the jstat counters for the policy.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	502 void G1CollectorPolicy::initialize_gc_policy_counters()
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	503 {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	504 _gc_policy_counters = new GCPolicyCounters("GarbageFirst", 1, 2 + G1Gen);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	505 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	506
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	507 void G1CollectorPolicy::calculate_young_list_min_length() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	508 _young_list_min_length = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	509
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	510 if (!adaptive_young_list_length())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	511 return;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	512
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	513 if (_alloc_rate_ms_seq->num() > 3) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	514 double now_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	515 double when_ms = _mmu_tracker->when_max_gc_sec(now_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	516 double alloc_rate_ms = predict_alloc_rate_ms();
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	517 size_t min_regions = (size_t) ceil(alloc_rate_ms * when_ms);
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	518 size_t current_region_num = _g1->young_list()->length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	519 _young_list_min_length = min_regions + current_region_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	520 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	521 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	522
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	523 void G1CollectorPolicy::calculate_young_list_target_length() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	524 if (adaptive_young_list_length()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	525 size_t rs_lengths = (size_t) get_new_prediction(_rs_lengths_seq);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	526 calculate_young_list_target_length(rs_lengths);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	527 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	528 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	529 _young_list_target_length = _young_list_fixed_length;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	530 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	531 _young_list_target_length = _young_list_fixed_length / 2;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	532 }
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	533
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	534 // Make sure we allow the application to allocate at least one
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	535 // region before we need to do a collection again.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	536 size_t min_length = _g1->young_list()->length() + 1;
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	537 _young_list_target_length = MAX2(_young_list_target_length, min_length);
1991 016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	538 calculate_max_gc_locker_expansion();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	539 calculate_survivors_policy();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	540 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	541
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	542 void G1CollectorPolicy::calculate_young_list_target_length(size_t rs_lengths) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	543 guarantee( adaptive_young_list_length(), "pre-condition" );
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	544 guarantee( !_in_marking_window \|\| !_last_full_young_gc, "invariant" );
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	545
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	546 double start_time_sec = os::elapsedTime();
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	547 size_t min_reserve_perc = MAX2((size_t)2, (size_t)G1ReservePercent);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	548 min_reserve_perc = MIN2((size_t) 50, min_reserve_perc);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	549 size_t reserve_regions =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	550 (size_t) ((double) min_reserve_perc * (double) _g1->n_regions() / 100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	551
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	552 if (full_young_gcs() && _free_regions_at_end_of_collection > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	553 // we are in fully-young mode and there are free regions in the heap
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	554
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	555 double survivor_regions_evac_time =
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	556 predict_survivor_regions_evac_time();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	557
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	558 double target_pause_time_ms = _mmu_tracker->max_gc_time() * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	559 size_t pending_cards = (size_t) get_new_prediction(_pending_cards_seq);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	560 size_t adj_rs_lengths = rs_lengths + predict_rs_length_diff();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	561 size_t scanned_cards = predict_young_card_num(adj_rs_lengths);
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	562 double base_time_ms = predict_base_elapsed_time_ms(pending_cards, scanned_cards)
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	563 + survivor_regions_evac_time;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	564
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	565 // the result
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	566 size_t final_young_length = 0;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	567
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	568 size_t init_free_regions =
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	569 MAX2((size_t)0, _free_regions_at_end_of_collection - reserve_regions);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	570
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	571 // if we're still under the pause target...
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	572 if (base_time_ms <= target_pause_time_ms) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	573 // We make sure that the shortest young length that makes sense
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	574 // fits within the target pause time.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	575 size_t min_young_length = 1;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	576
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	577 if (predict_will_fit(min_young_length, base_time_ms,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	578 init_free_regions, target_pause_time_ms)) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	579 // The shortest young length will fit within the target pause time;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	580 // we'll now check whether the absolute maximum number of young
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	581 // regions will fit in the target pause time. If not, we'll do
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	582 // a binary search between min_young_length and max_young_length
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	583 size_t abs_max_young_length = _free_regions_at_end_of_collection - 1;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	584 size_t max_young_length = abs_max_young_length;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	585
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	586 if (max_young_length > min_young_length) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	587 // Let's check if the initial max young length will fit within the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	588 // target pause. If so then there is no need to search for a maximal
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	589 // young length - we'll return the initial maximum
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	590
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	591 if (predict_will_fit(max_young_length, base_time_ms,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	592 init_free_regions, target_pause_time_ms)) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	593 // The maximum young length will satisfy the target pause time.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	594 // We are done so set min young length to this maximum length.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	595 // The code after the loop will then set final_young_length using
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	596 // the value cached in the minimum length.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	597 min_young_length = max_young_length;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	598 } else {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	599 // The maximum possible number of young regions will not fit within
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	600 // the target pause time so let's search....
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	601
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	602 size_t diff = (max_young_length - min_young_length) / 2;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	603 max_young_length = min_young_length + diff;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	604
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	605 while (max_young_length > min_young_length) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	606 if (predict_will_fit(max_young_length, base_time_ms,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	607 init_free_regions, target_pause_time_ms)) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	608
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	609 // The current max young length will fit within the target
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	610 // pause time. Note we do not exit the loop here. By setting
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	611 // min = max, and then increasing the max below means that
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	612 // we will continue searching for an upper bound in the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	613 // range [max..max+diff]
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	614 min_young_length = max_young_length;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	615 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	616 diff = (max_young_length - min_young_length) / 2;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	617 max_young_length = min_young_length + diff;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	618 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	619 // the above loop found a maximal young length that will fit
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	620 // within the target pause time.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	621 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	622 assert(min_young_length <= abs_max_young_length, "just checking");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	623 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	624 final_young_length = min_young_length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	625 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	626 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	627 // and we're done!
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	628
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	629 // we should have at least one region in the target young length
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	630 _young_list_target_length =
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	631 final_young_length + _recorded_survivor_regions;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	632
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	633 // let's keep an eye of how long we spend on this calculation
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	634 // right now, I assume that we'll print it when we need it; we
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	635 // should really adde it to the breakdown of a pause
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	636 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	637 double elapsed_time_ms = (end_time_sec - start_time_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	638
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	639 #ifdef TRACE_CALC_YOUNG_LENGTH
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	640 // leave this in for debugging, just in case
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	641 gclog_or_tty->print_cr("target = %1.1lf ms, young = " SIZE_FORMAT ", "
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	642 "elapsed %1.2lf ms, (%s%s) " SIZE_FORMAT SIZE_FORMAT,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	643 target_pause_time_ms,
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	644 _young_list_target_length
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	645 elapsed_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	646 full_young_gcs() ? "full" : "partial",
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	647 during_initial_mark_pause() ? " i-m" : "",
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	648 _in_marking_window,
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	649 _in_marking_window_im);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	650 #endif // TRACE_CALC_YOUNG_LENGTH
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	651
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	652 if (_young_list_target_length < _young_list_min_length) {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	653 // bummer; this means that, if we do a pause when the maximal
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	654 // length dictates, we'll violate the pause spacing target (the
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	655 // min length was calculate based on the application's current
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	656 // alloc rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	657
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	658 // so, we have to bite the bullet, and allocate the minimum
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	659 // number. We'll violate our target, but we just can't meet it.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	660
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	661 #ifdef TRACE_CALC_YOUNG_LENGTH
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	662 // leave this in for debugging, just in case
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	663 gclog_or_tty->print_cr("adjusted target length from "
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	664 SIZE_FORMAT " to " SIZE_FORMAT,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	665 _young_list_target_length, _young_list_min_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	666 #endif // TRACE_CALC_YOUNG_LENGTH
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	667
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	668 _young_list_target_length = _young_list_min_length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	669 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	670 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	671 // we are in a partially-young mode or we've run out of regions (due
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	672 // to evacuation failure)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	673
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	674 #ifdef TRACE_CALC_YOUNG_LENGTH
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	675 // leave this in for debugging, just in case
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	676 gclog_or_tty->print_cr("(partial) setting target to " SIZE_FORMAT
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	677 _young_list_min_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	678 #endif // TRACE_CALC_YOUNG_LENGTH
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	679 // we'll do the pause as soon as possible by choosing the minimum
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	680 _young_list_target_length = _young_list_min_length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	681 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	682
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	683 _rs_lengths_prediction = rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	684 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	685
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	686 // This is used by: calculate_young_list_target_length(rs_length). It
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	687 // returns true iff:
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	688 // the predicted pause time for the given young list will not overflow
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	689 // the target pause time
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	690 // and:
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	691 // the predicted amount of surviving data will not overflow the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	692 // the amount of free space available for survivor regions.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	693 //
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	694 bool
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	695 G1CollectorPolicy::predict_will_fit(size_t young_length,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	696 double base_time_ms,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	697 size_t init_free_regions,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	698 double target_pause_time_ms) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	699
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	700 if (young_length >= init_free_regions)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	701 // end condition 1: not enough space for the young regions
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	702 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	703
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	704 double accum_surv_rate_adj = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	705 double accum_surv_rate =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	706 accum_yg_surv_rate_pred((int)(young_length - 1)) - accum_surv_rate_adj;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	707
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	708 size_t bytes_to_copy =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	709 (size_t) (accum_surv_rate * (double) HeapRegion::GrainBytes);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	710
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	711 double copy_time_ms = predict_object_copy_time_ms(bytes_to_copy);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	712
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	713 double young_other_time_ms =
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	714 predict_young_other_time_ms(young_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	715
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	716 double pause_time_ms =
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	717 base_time_ms + copy_time_ms + young_other_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	718
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	719 if (pause_time_ms > target_pause_time_ms)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	720 // end condition 2: over the target pause time
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	721 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	722
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	723 size_t free_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	724 (init_free_regions - young_length) * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	725
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	726 if ((2.0 + sigma()) * (double) bytes_to_copy > (double) free_bytes)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	727 // end condition 3: out of to-space (conservatively)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	728 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	729
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	730 // success!
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	731 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	732 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	733
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	734 double G1CollectorPolicy::predict_survivor_regions_evac_time() {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	735 double survivor_regions_evac_time = 0.0;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	736 for (HeapRegion * r = _recorded_survivor_head;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	737 r != NULL && r != _recorded_survivor_tail->get_next_young_region();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	738 r = r->get_next_young_region()) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	739 survivor_regions_evac_time += predict_region_elapsed_time_ms(r, true);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	740 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	741 return survivor_regions_evac_time;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	742 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	743
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	744 void G1CollectorPolicy::check_prediction_validity() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	745 guarantee( adaptive_young_list_length(), "should not call this otherwise" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	746
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	747 size_t rs_lengths = _g1->young_list()->sampled_rs_lengths();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	748 if (rs_lengths > _rs_lengths_prediction) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	749 // add 10% to avoid having to recalculate often
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	750 size_t rs_lengths_prediction = rs_lengths * 1100 / 1000;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	751 calculate_young_list_target_length(rs_lengths_prediction);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	752 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	753 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	754
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	755 HeapWord* G1CollectorPolicy::mem_allocate_work(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	756 bool is_tlab,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	757 bool* gc_overhead_limit_was_exceeded) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	758 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	759 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	760 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	761
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	762 // This method controls how a collector handles one or more
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	763 // of its generations being fully allocated.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	764 HeapWord* G1CollectorPolicy::satisfy_failed_allocation(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	765 bool is_tlab) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	766 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	767 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	768 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	769
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	770
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	771 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	772 bool G1CollectorPolicy::verify_young_ages() {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	773 HeapRegion* head = _g1->young_list()->first_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	774 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	775 verify_young_ages(head, _short_lived_surv_rate_group);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	776 // also call verify_young_ages on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	777 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	778
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	779 bool
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	780 G1CollectorPolicy::verify_young_ages(HeapRegion* head,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	781 SurvRateGroup *surv_rate_group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	782 guarantee( surv_rate_group != NULL, "pre-condition" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	783
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	784 const char* name = surv_rate_group->name();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	785 bool ret = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	786 int prev_age = -1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	787
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	788 for (HeapRegion* curr = head;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	789 curr != NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	790 curr = curr->get_next_young_region()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	791 SurvRateGroup* group = curr->surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	792 if (group == NULL && !curr->is_survivor()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	793 gclog_or_tty->print_cr("## %s: encountered NULL surv_rate_group", name);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	794 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	795 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	796
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	797 if (surv_rate_group == group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	798 int age = curr->age_in_surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	799
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	800 if (age < 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	801 gclog_or_tty->print_cr("## %s: encountered negative age", name);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	802 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	803 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	804
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	805 if (age <= prev_age) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	806 gclog_or_tty->print_cr("## %s: region ages are not strictly increasing "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	807 "(%d, %d)", name, age, prev_age);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	808 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	809 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	810 prev_age = age;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	811 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	812 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	813
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	814 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	815 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	816 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	817
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	818 void G1CollectorPolicy::record_full_collection_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	819 _cur_collection_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	820 // Release the future to-space so that it is available for compaction into.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	821 _g1->set_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	822 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	823
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	824 void G1CollectorPolicy::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	825 // Consider this like a collection pause for the purposes of allocation
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	826 // since last pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	827 double end_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	828 double full_gc_time_sec = end_sec - _cur_collection_start_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	829 double full_gc_time_ms = full_gc_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	830
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	831 _all_full_gc_times_ms->add(full_gc_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	832
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	833 update_recent_gc_times(end_sec, full_gc_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	834
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	835 _g1->clear_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	836
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	837 // "Nuke" the heuristics that control the fully/partially young GC
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	838 // transitions and make sure we start with fully young GCs after the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	839 // Full GC.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	840 set_full_young_gcs(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	841 _last_full_young_gc = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	842 _should_revert_to_full_young_gcs = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	843 clear_initiate_conc_mark_if_possible();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	844 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	845 _known_garbage_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	846 _known_garbage_ratio = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	847 _in_marking_window = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	848 _in_marking_window_im = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	849
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	850 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	851 // also call this on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	852
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	853 record_survivor_regions(0, NULL, NULL);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	854
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	855 _prev_region_num_young = _region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	856 _prev_region_num_tenured = _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	857
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	858 _free_regions_at_end_of_collection = _g1->free_regions();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	859 // Reset survivors SurvRateGroup.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	860 _survivor_surv_rate_group->reset();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	861 calculate_young_list_min_length();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	862 calculate_young_list_target_length();
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	863 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	864
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	865 void G1CollectorPolicy::record_before_bytes(size_t bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	866 _bytes_in_to_space_before_gc += bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	867 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	868
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	869 void G1CollectorPolicy::record_after_bytes(size_t bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	870 _bytes_in_to_space_after_gc += bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	871 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	872
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	873 void G1CollectorPolicy::record_stop_world_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	874 _stop_world_start = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	875 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	876
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	877 void G1CollectorPolicy::record_collection_pause_start(double start_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	878 size_t start_used) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	879 if (PrintGCDetails) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	880 gclog_or_tty->stamp(PrintGCTimeStamps);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	881 gclog_or_tty->print("[GC pause");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	882 if (in_young_gc_mode())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	883 gclog_or_tty->print(" (%s)", full_young_gcs() ? "young" : "partial");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	884 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	885
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	886 assert(_g1->used() == _g1->recalculate_used(),
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	887 err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	888 _g1->used(), _g1->recalculate_used()));
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	889
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	890 double s_w_t_ms = (start_time_sec - _stop_world_start) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	891 _all_stop_world_times_ms->add(s_w_t_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	892 _stop_world_start = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	893
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	894 _cur_collection_start_sec = start_time_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	895 _cur_collection_pause_used_at_start_bytes = start_used;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	896 _cur_collection_pause_used_regions_at_start = _g1->used_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	897 _pending_cards = _g1->pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	898 _max_pending_cards = _g1->max_pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	899
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	900 _bytes_in_to_space_before_gc = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	901 _bytes_in_to_space_after_gc = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	902 _bytes_in_collection_set_before_gc = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	903
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	904 YoungList* young_list = _g1->young_list();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	905 _eden_bytes_before_gc = young_list->eden_used_bytes();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	906 _survivor_bytes_before_gc = young_list->survivor_used_bytes();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	907 _capacity_before_gc = _g1->capacity();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	908
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	909 #ifdef DEBUG
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	910 // initialise these to something well known so that we can spot
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	911 // if they are not set properly
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	912
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	913 for (int i = 0; i < _parallel_gc_threads; ++i) {
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	914 _par_last_gc_worker_start_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	915 _par_last_ext_root_scan_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	916 _par_last_mark_stack_scan_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	917 _par_last_update_rs_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	918 _par_last_update_rs_processed_buffers[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	919 _par_last_scan_rs_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	920 _par_last_obj_copy_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	921 _par_last_termination_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	922 _par_last_termination_attempts[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	923 _par_last_gc_worker_end_times_ms[i] = -1234.0;
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	924 _par_last_gc_worker_times_ms[i] = -1234.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	925 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	926 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	927
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	928 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	929 _cur_aux_times_ms[i] = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	930 _cur_aux_times_set[i] = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	931 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	932
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	933 _satb_drain_time_set = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	934 _last_satb_drain_processed_buffers = -1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	935
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	936 if (in_young_gc_mode())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	937 _last_young_gc_full = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	938
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	939 // do that for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	940 _short_lived_surv_rate_group->stop_adding_regions();
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	941 _survivors_age_table.clear();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	942
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	943 assert( verify_young_ages(), "region age verification" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	944 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	945
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	946 void G1CollectorPolicy::record_mark_closure_time(double mark_closure_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	947 _mark_closure_time_ms = mark_closure_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	948 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	949
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	950 void G1CollectorPolicy::record_concurrent_mark_init_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	951 _mark_init_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	952 guarantee(!in_young_gc_mode(), "should not do be here in young GC mode");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	953 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	954
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	955 void G1CollectorPolicy::record_concurrent_mark_init_end_pre(double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	956 mark_init_elapsed_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	957 _during_marking = true;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	958 assert(!initiate_conc_mark_if_possible(), "we should have cleared it by now");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	959 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	960 _cur_mark_stop_world_time_ms = mark_init_elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	961 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	962
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	963 void G1CollectorPolicy::record_concurrent_mark_init_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	964 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	965 double elapsed_time_ms = (end_time_sec - _mark_init_start_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	966 _concurrent_mark_init_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	967 record_concurrent_mark_init_end_pre(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	968
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	969 _mmu_tracker->add_pause(_mark_init_start_sec, end_time_sec, true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	970 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	971
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	972 void G1CollectorPolicy::record_concurrent_mark_remark_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	973 _mark_remark_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	974 _during_marking = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	975 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	976
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	977 void G1CollectorPolicy::record_concurrent_mark_remark_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	978 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	979 double elapsed_time_ms = (end_time_sec - _mark_remark_start_sec)*1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	980 _concurrent_mark_remark_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	981 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	982 _prev_collection_pause_end_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	983
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	984 _mmu_tracker->add_pause(_mark_remark_start_sec, end_time_sec, true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	985 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	986
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	987 void G1CollectorPolicy::record_concurrent_mark_cleanup_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	988 _mark_cleanup_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	989 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	990
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	991 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	992 G1CollectorPolicy::record_concurrent_mark_cleanup_end(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	993 size_t max_live_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	994 record_concurrent_mark_cleanup_end_work1(freed_bytes, max_live_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	995 record_concurrent_mark_cleanup_end_work2();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	996 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	997
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	998 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	999 G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1000 record_concurrent_mark_cleanup_end_work1(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1001 size_t max_live_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1002 if (_n_marks < 2) _n_marks++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1003 if (G1PolicyVerbose > 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1004 gclog_or_tty->print_cr("At end of marking, max_live is " SIZE_FORMAT " MB "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1005 " (of " SIZE_FORMAT " MB heap).",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1006 max_live_bytes/M, _g1->capacity()/M);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1007 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1008
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1009 // The important thing about this is that it includes "os::elapsedTime".
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1010 void G1CollectorPolicy::record_concurrent_mark_cleanup_end_work2() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1011 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1012 double elapsed_time_ms = (end_time_sec - _mark_cleanup_start_sec)*1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1013 _concurrent_mark_cleanup_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1014 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1015 _prev_collection_pause_end_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1016
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1017 _mmu_tracker->add_pause(_mark_cleanup_start_sec, end_time_sec, true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1018
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1019 _num_markings++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1020
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1021 // We did a marking, so reset the "since_last_mark" variables.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1022 double considerConcMarkCost = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1023 // If there are available processors, concurrent activity is free...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1024 if (Threads::number_of_non_daemon_threads() * 2 <
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1025 os::active_processor_count()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1026 considerConcMarkCost = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1027 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1028 _n_pauses_at_mark_end = _n_pauses;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1029 _n_marks_since_last_pause++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1030 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1031
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1032 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1033 G1CollectorPolicy::record_concurrent_mark_cleanup_completed() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1034 if (in_young_gc_mode()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1035 _should_revert_to_full_young_gcs = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1036 _last_full_young_gc = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1037 _in_marking_window = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1038 if (adaptive_young_list_length())
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1039 calculate_young_list_target_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1040 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1041 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1042
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1043 void G1CollectorPolicy::record_concurrent_pause() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1044 if (_stop_world_start > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1045 double yield_ms = (os::elapsedTime() - _stop_world_start) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1046 _all_yield_times_ms->add(yield_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1047 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1048 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1049
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1050 void G1CollectorPolicy::record_concurrent_pause_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1051 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1052
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1053 void G1CollectorPolicy::record_collection_pause_end_CH_strong_roots() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1054 _cur_CH_strong_roots_end_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1055 _cur_CH_strong_roots_dur_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1056 (_cur_CH_strong_roots_end_sec - _cur_collection_start_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1057 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1058
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1059 void G1CollectorPolicy::record_collection_pause_end_G1_strong_roots() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1060 _cur_G1_strong_roots_end_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1061 _cur_G1_strong_roots_dur_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1062 (_cur_G1_strong_roots_end_sec - _cur_CH_strong_roots_end_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1063 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1064
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1065 template<class T>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1066 T sum_of(T* sum_arr, int start, int n, int N) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1067 T sum = (T)0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1068 for (int i = 0; i < n; i++) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1069 int j = (start + i) % N;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1070 sum += sum_arr[j];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1071 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1072 return sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1073 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1074
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1075 void G1CollectorPolicy::print_par_stats(int level,
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1076 const char* str,
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1077 double* data) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1078 double min = data[0], max = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1079 double total = 0.0;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1080 LineBuffer buf(level);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1081 buf.append("[%s (ms):", str);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1082 for (uint i = 0; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1083 double val = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1084 if (val < min)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1085 min = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1086 if (val > max)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1087 max = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1088 total += val;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1089 buf.append(" %3.1lf", val);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1090 }
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1091 buf.append_and_print_cr("");
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1092 double avg = total / (double) ParallelGCThreads;
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1093 buf.append_and_print_cr(" Avg: %5.1lf, Min: %5.1lf, Max: %5.1lf, Diff: %5.1lf]",
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1094 avg, min, max, max - min);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1095 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1096
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1097 void G1CollectorPolicy::print_par_sizes(int level,
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1098 const char* str,
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1099 double* data) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1100 double min = data[0], max = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1101 double total = 0.0;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1102 LineBuffer buf(level);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1103 buf.append("[%s :", str);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1104 for (uint i = 0; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1105 double val = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1106 if (val < min)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1107 min = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1108 if (val > max)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1109 max = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1110 total += val;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1111 buf.append(" %d", (int) val);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1112 }
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1113 buf.append_and_print_cr("");
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1114 double avg = total / (double) ParallelGCThreads;
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1115 buf.append_and_print_cr(" Sum: %d, Avg: %d, Min: %d, Max: %d, Diff: %d]",
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1116 (int)total, (int)avg, (int)min, (int)max, (int)max - (int)min);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1117 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1118
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1119 void G1CollectorPolicy::print_stats (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1120 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1121 double value) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1122 LineBuffer(level).append_and_print_cr("[%s: %5.1lf ms]", str, value);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1123 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1124
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1125 void G1CollectorPolicy::print_stats (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1126 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1127 int value) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1128 LineBuffer(level).append_and_print_cr("[%s: %d]", str, value);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1129 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1130
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1131 double G1CollectorPolicy::avg_value (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1132 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1133 double ret = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1134 for (uint i = 0; i < ParallelGCThreads; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1135 ret += data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1136 return ret / (double) ParallelGCThreads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1137 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1138 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1139 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1140 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1141
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1142 double G1CollectorPolicy::max_value (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1143 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1144 double ret = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1145 for (uint i = 1; i < ParallelGCThreads; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1146 if (data[i] > ret)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1147 ret = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1148 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1149 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1150 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1151 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1152 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1153
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1154 double G1CollectorPolicy::sum_of_values (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1155 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1156 double sum = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1157 for (uint i = 0; i < ParallelGCThreads; i++)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1158 sum += data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1159 return sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1160 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1161 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1162 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1163 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1164
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1165 double G1CollectorPolicy::max_sum (double* data1,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1166 double* data2) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1167 double ret = data1[0] + data2[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1168
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1169 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1170 for (uint i = 1; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1171 double data = data1[i] + data2[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1172 if (data > ret)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1173 ret = data;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1174 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1175 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1176 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1177 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1178
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1179 // Anything below that is considered to be zero
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1180 #define MIN_TIMER_GRANULARITY 0.0000001
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1181
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1182 void G1CollectorPolicy::record_collection_pause_end() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1183 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1184 double elapsed_ms = _last_pause_time_ms;
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1185 bool parallel = G1CollectedHeap::use_parallel_gc_threads();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1186 double evac_ms = (end_time_sec - _cur_G1_strong_roots_end_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1187 size_t rs_size =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1188 _cur_collection_pause_used_regions_at_start - collection_set_size();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1189 size_t cur_used_bytes = _g1->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1190 assert(cur_used_bytes == _g1->recalculate_used(), "It should!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1191 bool last_pause_included_initial_mark = false;
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1192 bool update_stats = !_g1->evacuation_failed();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1193
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1194 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1195 if (G1YoungSurvRateVerbose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1196 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1197 _short_lived_surv_rate_group->print();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1198 // do that for any other surv rate groups too
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1199 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1200 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1201
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1202 if (in_young_gc_mode()) {
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1203 last_pause_included_initial_mark = during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1204 if (last_pause_included_initial_mark)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1205 record_concurrent_mark_init_end_pre(0.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1206
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1207 size_t min_used_targ =
1283 1c72304f1885 6928073: G1: use existing command line parameters for marking cycle initiation tonyp parents: 1282 diff changeset	1208 (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1209
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1210
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1211 if (!_g1->mark_in_progress() && !_last_full_young_gc) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1212 assert(!last_pause_included_initial_mark, "invariant");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1213 if (cur_used_bytes > min_used_targ &&
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1214 cur_used_bytes > _prev_collection_pause_used_at_end_bytes) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1215 assert(!during_initial_mark_pause(), "we should not see this here");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1216
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1217 // Note: this might have already been set, if during the last
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1218 // pause we decided to start a cycle but at the beginning of
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1219 // this pause we decided to postpone it. That's OK.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1220 set_initiate_conc_mark_if_possible();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1221 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1222 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1223
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1224 _prev_collection_pause_used_at_end_bytes = cur_used_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1225 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1226
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1227 _mmu_tracker->add_pause(end_time_sec - elapsed_ms/1000.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1228 end_time_sec, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1229
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1230 guarantee(_cur_collection_pause_used_regions_at_start >=
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1231 collection_set_size(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1232 "Negative RS size?");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1233
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1234 // This assert is exempted when we're doing parallel collection pauses,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1235 // because the fragmentation caused by the parallel GC allocation buffers
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1236 // can lead to more memory being used during collection than was used
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1237 // before. Best leave this out until the fragmentation problem is fixed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1238 // Pauses in which evacuation failed can also lead to negative
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1239 // collections, since no space is reclaimed from a region containing an
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1240 // object whose evacuation failed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1241 // Further, we're now always doing parallel collection. But I'm still
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1242 // leaving this here as a placeholder for a more precise assertion later.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1243 // (DLD, 10/05.)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1244 assert((true \|\| parallel) // Always using GC LABs now.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1245 \|\| _g1->evacuation_failed()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1246 \|\| _cur_collection_pause_used_at_start_bytes >= cur_used_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1247 "Negative collection");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1248
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1249 size_t freed_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1250 _cur_collection_pause_used_at_start_bytes - cur_used_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1251 size_t surviving_bytes = _collection_set_bytes_used_before - freed_bytes;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1252
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1253 double survival_fraction =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1254 (double)surviving_bytes/
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1255 (double)_collection_set_bytes_used_before;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1256
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1257 _n_pauses++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1258
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	1259 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1260 _recent_CH_strong_roots_times_ms->add(_cur_CH_strong_roots_dur_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1261 _recent_G1_strong_roots_times_ms->add(_cur_G1_strong_roots_dur_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1262 _recent_evac_times_ms->add(evac_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1263 _recent_pause_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1264
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1265 _recent_rs_sizes->add(rs_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1266
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1267 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1268 // fragmentation can produce negative collections. Same with evac
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1269 // failure.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1270 // Further, we're now always doing parallel collection. But I'm still
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1271 // leaving this here as a placeholder for a more precise assertion later.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1272 // (DLD, 10/05.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1273 assert((true \|\| parallel)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1274 \|\| _g1->evacuation_failed()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1275 \|\| surviving_bytes <= _collection_set_bytes_used_before,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1276 "Or else negative collection!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1277 _recent_CS_bytes_used_before->add(_collection_set_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1278 _recent_CS_bytes_surviving->add(surviving_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1279
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1280 // this is where we update the allocation rate of the application
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1281 double app_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1282 (_cur_collection_start_sec * 1000.0 - _prev_collection_pause_end_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1283 if (app_time_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1284 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1285 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1286 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1287 app_time_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1288 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1289 size_t regions_allocated =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1290 (_region_num_young - _prev_region_num_young) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1291 (_region_num_tenured - _prev_region_num_tenured);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1292 double alloc_rate_ms = (double) regions_allocated / app_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1293 _alloc_rate_ms_seq->add(alloc_rate_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1294 _prev_region_num_young = _region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1295 _prev_region_num_tenured = _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1296
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1297 double interval_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1298 (end_time_sec - _recent_prev_end_times_for_all_gcs_sec->oldest()) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1299 update_recent_gc_times(end_time_sec, elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1300 _recent_avg_pause_time_ratio = _recent_gc_times_ms->sum()/interval_ms;
1086 89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1301 if (recent_avg_pause_time_ratio() < 0.0 \|\|
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1302 (recent_avg_pause_time_ratio() - 1.0 > 0.0)) {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1303 #ifndef PRODUCT
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1304 // Dump info to allow post-facto debugging
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1305 gclog_or_tty->print_cr("recent_avg_pause_time_ratio() out of bounds");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1306 gclog_or_tty->print_cr("-------------------------------------------");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1307 gclog_or_tty->print_cr("Recent GC Times (ms):");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1308 _recent_gc_times_ms->dump();
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1309 gclog_or_tty->print_cr("(End Time=%3.3f) Recent GC End Times (s):", end_time_sec);
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1310 _recent_prev_end_times_for_all_gcs_sec->dump();
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1311 gclog_or_tty->print_cr("GC = %3.3f, Interval = %3.3f, Ratio = %3.3f",
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1312 _recent_gc_times_ms->sum(), interval_ms, recent_avg_pause_time_ratio());
1087 23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1313 // In debug mode, terminate the JVM if the user wants to debug at this point.
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1314 assert(!G1FailOnFPError, "Debugging data for CR 6898948 has been dumped above");
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1315 #endif // !PRODUCT
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1316 // Clip ratio between 0.0 and 1.0, and continue. This will be fixed in
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1317 // CR 6902692 by redoing the manner in which the ratio is incrementally computed.
1086 89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1318 if (_recent_avg_pause_time_ratio < 0.0) {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1319 _recent_avg_pause_time_ratio = 0.0;
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1320 } else {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1321 assert(_recent_avg_pause_time_ratio - 1.0 > 0.0, "Ctl-point invariant");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1322 _recent_avg_pause_time_ratio = 1.0;
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1323 }
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1324 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1325 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1326
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1327 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1328 gclog_or_tty->print_cr(" Recording collection pause(%d)", _n_pauses);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1329 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1330
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1331 PauseSummary* summary = _summary;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1332
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1333 double ext_root_scan_time = avg_value(_par_last_ext_root_scan_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1334 double mark_stack_scan_time = avg_value(_par_last_mark_stack_scan_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1335 double update_rs_time = avg_value(_par_last_update_rs_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1336 double update_rs_processed_buffers =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1337 sum_of_values(_par_last_update_rs_processed_buffers);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1338 double scan_rs_time = avg_value(_par_last_scan_rs_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1339 double obj_copy_time = avg_value(_par_last_obj_copy_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1340 double termination_time = avg_value(_par_last_termination_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1341
648 2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1342 double parallel_other_time = _cur_collection_par_time_ms -
2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1343 (update_rs_time + ext_root_scan_time + mark_stack_scan_time +
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1344 scan_rs_time + obj_copy_time + termination_time);
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	1345 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1346 MainBodySummary* body_summary = summary->main_body_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1347 guarantee(body_summary != NULL, "should not be null!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1348
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1349 if (_satb_drain_time_set)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1350 body_summary->record_satb_drain_time_ms(_cur_satb_drain_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1351 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1352 body_summary->record_satb_drain_time_ms(0.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1353 body_summary->record_ext_root_scan_time_ms(ext_root_scan_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1354 body_summary->record_mark_stack_scan_time_ms(mark_stack_scan_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1355 body_summary->record_update_rs_time_ms(update_rs_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1356 body_summary->record_scan_rs_time_ms(scan_rs_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1357 body_summary->record_obj_copy_time_ms(obj_copy_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1358 if (parallel) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1359 body_summary->record_parallel_time_ms(_cur_collection_par_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1360 body_summary->record_clear_ct_time_ms(_cur_clear_ct_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1361 body_summary->record_termination_time_ms(termination_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1362 body_summary->record_parallel_other_time_ms(parallel_other_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1363 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1364 body_summary->record_mark_closure_time_ms(_mark_closure_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1365 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1366
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1367 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1368 gclog_or_tty->print_cr(" ET: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1369 " CH Strong: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1370 " G1 Strong: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1371 " Evac: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1372 " ET-RS: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1373 " \|RS\|: " SIZE_FORMAT,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1374 elapsed_ms, recent_avg_time_for_pauses_ms(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1375 _cur_CH_strong_roots_dur_ms, recent_avg_time_for_CH_strong_ms(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1376 _cur_G1_strong_roots_dur_ms, recent_avg_time_for_G1_strong_ms(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1377 evac_ms, recent_avg_time_for_evac_ms(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1378 scan_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1379 recent_avg_time_for_pauses_ms() -
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1380 recent_avg_time_for_G1_strong_ms(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1381 rs_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1382
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1383 gclog_or_tty->print_cr(" Used at start: " SIZE_FORMAT"K"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1384 " At end " SIZE_FORMAT "K\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1385 " garbage : " SIZE_FORMAT "K"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1386 " of " SIZE_FORMAT "K\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1387 " survival : %6.2f%% (%6.2f%% avg)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1388 _cur_collection_pause_used_at_start_bytes/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1389 _g1->used()/K, freed_bytes/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1390 _collection_set_bytes_used_before/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1391 survival_fraction*100.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1392 recent_avg_survival_fraction()*100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1393 gclog_or_tty->print_cr(" Recent %% gc pause time: %6.2f",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1394 recent_avg_pause_time_ratio() * 100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1395 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1396
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1397 double other_time_ms = elapsed_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1398
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1399 if (_satb_drain_time_set) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1400 other_time_ms -= _cur_satb_drain_time_ms;
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1401 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1402
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1403 if (parallel) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1404 other_time_ms -= _cur_collection_par_time_ms + _cur_clear_ct_time_ms;
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1405 } else {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1406 other_time_ms -=
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1407 update_rs_time +
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1408 ext_root_scan_time + mark_stack_scan_time +
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1409 scan_rs_time + obj_copy_time;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1410 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1411
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1412 if (PrintGCDetails) {
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1413 gclog_or_tty->print_cr("%s, %1.8lf secs]",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1414 (last_pause_included_initial_mark) ? " (initial-mark)" : "",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1415 elapsed_ms / 1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1416
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1417 if (_satb_drain_time_set) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1418 print_stats(1, "SATB Drain Time", _cur_satb_drain_time_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1419 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1420 if (_last_satb_drain_processed_buffers >= 0) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1421 print_stats(2, "Processed Buffers", _last_satb_drain_processed_buffers);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1422 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1423 if (parallel) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1424 print_stats(1, "Parallel Time", _cur_collection_par_time_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1425 print_par_stats(2, "GC Worker Start Time", _par_last_gc_worker_start_times_ms);
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1426 print_par_stats(2, "Update RS", _par_last_update_rs_times_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1427 print_par_sizes(3, "Processed Buffers", _par_last_update_rs_processed_buffers);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1428 print_par_stats(2, "Ext Root Scanning", _par_last_ext_root_scan_times_ms);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1429 print_par_stats(2, "Mark Stack Scanning", _par_last_mark_stack_scan_times_ms);
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1430 print_par_stats(2, "Scan RS", _par_last_scan_rs_times_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1431 print_par_stats(2, "Object Copy", _par_last_obj_copy_times_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1432 print_par_stats(2, "Termination", _par_last_termination_times_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1433 print_par_sizes(3, "Termination Attempts", _par_last_termination_attempts);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1434 print_par_stats(2, "GC Worker End Time", _par_last_gc_worker_end_times_ms);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1435
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1436 for (int i = 0; i < _parallel_gc_threads; i++) {
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1437 _par_last_gc_worker_times_ms[i] = _par_last_gc_worker_end_times_ms[i] - _par_last_gc_worker_start_times_ms[i];
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1438 }
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1439 print_par_stats(2, "GC Worker Times", _par_last_gc_worker_times_ms);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1440
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1441 print_stats(2, "Other", parallel_other_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1442 print_stats(1, "Clear CT", _cur_clear_ct_time_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1443 } else {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1444 print_stats(1, "Update RS", update_rs_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1445 print_stats(2, "Processed Buffers",
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1446 (int)update_rs_processed_buffers);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1447 print_stats(1, "Ext Root Scanning", ext_root_scan_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1448 print_stats(1, "Mark Stack Scanning", mark_stack_scan_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1449 print_stats(1, "Scan RS", scan_rs_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1450 print_stats(1, "Object Copying", obj_copy_time);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1451 }
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1452 #ifndef PRODUCT
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1453 print_stats(1, "Cur Clear CC", _cur_clear_cc_time_ms);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1454 print_stats(1, "Cum Clear CC", _cum_clear_cc_time_ms);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1455 print_stats(1, "Min Clear CC", _min_clear_cc_time_ms);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1456 print_stats(1, "Max Clear CC", _max_clear_cc_time_ms);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1457 if (_num_cc_clears > 0) {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1458 print_stats(1, "Avg Clear CC", _cum_clear_cc_time_ms / ((double)_num_cc_clears));
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1459 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1460 #endif
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1461 print_stats(1, "Other", other_time_ms);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1462 print_stats(2, "Choose CSet", _recorded_young_cset_choice_time_ms);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1463
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1464 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1465 if (_cur_aux_times_set[i]) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1466 char buffer[96];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1467 sprintf(buffer, "Aux%d", i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1468 print_stats(1, buffer, _cur_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1469 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1470 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1471 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1472
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1473 _all_pause_times_ms->add(elapsed_ms);
648 2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1474 if (update_stats) {
2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1475 summary->record_total_time_ms(elapsed_ms);
2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1476 summary->record_other_time_ms(other_time_ms);
2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1477 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1478 for (int i = 0; i < _aux_num; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1479 if (_cur_aux_times_set[i])
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1480 _all_aux_times_ms[i].add(_cur_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1481
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1482 // Reset marks-between-pauses counter.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1483 _n_marks_since_last_pause = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1484
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1485 // Update the efficiency-since-mark vars.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1486 double proc_ms = elapsed_ms * (double) _parallel_gc_threads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1487 if (elapsed_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1488 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1489 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1490 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1491 proc_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1492 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1493 double cur_efficiency = (double) freed_bytes / proc_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1494
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1495 bool new_in_marking_window = _in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1496 bool new_in_marking_window_im = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1497 if (during_initial_mark_pause()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1498 new_in_marking_window = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1499 new_in_marking_window_im = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1500 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1501
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1502 if (in_young_gc_mode()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1503 if (_last_full_young_gc) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1504 set_full_young_gcs(false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1505 _last_full_young_gc = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1506 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1507
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1508 if ( !_last_young_gc_full ) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1509 if ( _should_revert_to_full_young_gcs \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1510 _known_garbage_ratio < 0.05 \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1511 (adaptive_young_list_length() &&
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1512 (get_gc_eff_factor() * cur_efficiency < predict_young_gc_eff())) ) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1513 set_full_young_gcs(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1514 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1515 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1516 _should_revert_to_full_young_gcs = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1517
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1518 if (_last_young_gc_full && !_during_marking)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1519 _young_gc_eff_seq->add(cur_efficiency);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1520 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1521
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1522 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1523 // do that for any other surv rate groupsx
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1524
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1525 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1526
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	1527 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1528 double pause_time_ms = elapsed_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1529
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1530 size_t diff = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1531 if (_max_pending_cards >= _pending_cards)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1532 diff = _max_pending_cards - _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1533 _pending_card_diff_seq->add((double) diff);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1534
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1535 double cost_per_card_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1536 if (_pending_cards > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1537 cost_per_card_ms = update_rs_time / (double) _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1538 _cost_per_card_ms_seq->add(cost_per_card_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1539 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1540
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1541 size_t cards_scanned = _g1->cards_scanned();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1542
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1543 double cost_per_entry_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1544 if (cards_scanned > 10) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1545 cost_per_entry_ms = scan_rs_time / (double) cards_scanned;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1546 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1547 _cost_per_entry_ms_seq->add(cost_per_entry_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1548 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1549 _partially_young_cost_per_entry_ms_seq->add(cost_per_entry_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1550 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1551
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1552 if (_max_rs_lengths > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1553 double cards_per_entry_ratio =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1554 (double) cards_scanned / (double) _max_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1555 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1556 _fully_young_cards_per_entry_ratio_seq->add(cards_per_entry_ratio);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1557 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1558 _partially_young_cards_per_entry_ratio_seq->add(cards_per_entry_ratio);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1559 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1560
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1561 size_t rs_length_diff = _max_rs_lengths - _recorded_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1562 if (rs_length_diff >= 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1563 _rs_length_diff_seq->add((double) rs_length_diff);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1564
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1565 size_t copied_bytes = surviving_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1566 double cost_per_byte_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1567 if (copied_bytes > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1568 cost_per_byte_ms = obj_copy_time / (double) copied_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1569 if (_in_marking_window)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1570 _cost_per_byte_ms_during_cm_seq->add(cost_per_byte_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1571 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1572 _cost_per_byte_ms_seq->add(cost_per_byte_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1573 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1574
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1575 double all_other_time_ms = pause_time_ms -
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1576 (update_rs_time + scan_rs_time + obj_copy_time +
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1577 _mark_closure_time_ms + termination_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1578
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1579 double young_other_time_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1580 if (_recorded_young_regions > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1581 young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1582 _recorded_young_cset_choice_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1583 _recorded_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1584 _young_other_cost_per_region_ms_seq->add(young_other_time_ms /
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1585 (double) _recorded_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1586 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1587 double non_young_other_time_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1588 if (_recorded_non_young_regions > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1589 non_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1590 _recorded_non_young_cset_choice_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1591 _recorded_non_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1592
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1593 _non_young_other_cost_per_region_ms_seq->add(non_young_other_time_ms /
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1594 (double) _recorded_non_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1595 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1596
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1597 double constant_other_time_ms = all_other_time_ms -
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1598 (young_other_time_ms + non_young_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1599 _constant_other_time_ms_seq->add(constant_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1600
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1601 double survival_ratio = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1602 if (_bytes_in_collection_set_before_gc > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1603 survival_ratio = (double) bytes_in_to_space_during_gc() /
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1604 (double) _bytes_in_collection_set_before_gc;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1605 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1606
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1607 _pending_cards_seq->add((double) _pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1608 _scanned_cards_seq->add((double) cards_scanned);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1609 _rs_lengths_seq->add((double) _max_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1610
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1611 double expensive_region_limit_ms =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1612 (double) MaxGCPauseMillis - predict_constant_other_time_ms();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1613 if (expensive_region_limit_ms < 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1614 // this means that the other time was predicted to be longer than
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1615 // than the max pause time
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1616 expensive_region_limit_ms = (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1617 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1618 _expensive_region_limit_ms = expensive_region_limit_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1619
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1620 if (PREDICTIONS_VERBOSE) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1621 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1622 gclog_or_tty->print_cr("PREDICTIONS %1.4lf %d "
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1623 "REGIONS %d %d %d "
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1624 "PENDING_CARDS %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1625 "CARDS_SCANNED %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1626 "RS_LENGTHS %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1627 "RS_UPDATE %1.6lf %1.6lf RS_SCAN %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1628 "SURVIVAL_RATIO %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1629 "OBJECT_COPY %1.6lf %1.6lf OTHER_CONSTANT %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1630 "OTHER_YOUNG %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1631 "OTHER_NON_YOUNG %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1632 "VTIME_DIFF %1.6lf TERMINATION %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1633 "ELAPSED %1.6lf %1.6lf ",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1634 _cur_collection_start_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1635 (!_last_young_gc_full) ? 2 :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1636 (last_pause_included_initial_mark) ? 1 : 0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1637 _recorded_region_num,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1638 _recorded_young_regions,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1639 _recorded_non_young_regions,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1640 _predicted_pending_cards, _pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1641 _predicted_cards_scanned, cards_scanned,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1642 _predicted_rs_lengths, _max_rs_lengths,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1643 _predicted_rs_update_time_ms, update_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1644 _predicted_rs_scan_time_ms, scan_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1645 _predicted_survival_ratio, survival_ratio,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1646 _predicted_object_copy_time_ms, obj_copy_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1647 _predicted_constant_other_time_ms, constant_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1648 _predicted_young_other_time_ms, young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1649 _predicted_non_young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1650 non_young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1651 _vtime_diff_ms, termination_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1652 _predicted_pause_time_ms, elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1653 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1654
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1655 if (G1PolicyVerbose > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1656 gclog_or_tty->print_cr("Pause Time, predicted: %1.4lfms (predicted %s), actual: %1.4lfms",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1657 _predicted_pause_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1658 (_within_target) ? "within" : "outside",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1659 elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1660 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1661
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1662 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1663
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1664 _in_marking_window = new_in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1665 _in_marking_window_im = new_in_marking_window_im;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1666 _free_regions_at_end_of_collection = _g1->free_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1667 calculate_young_list_min_length();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1668 calculate_young_list_target_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1669
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1670 // Note that _mmu_tracker->max_gc_time() returns the time in seconds.
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	1671 double update_rs_time_goal_ms = _mmu_tracker->max_gc_time() * MILLIUNITS * G1RSetUpdatingPauseTimePercent / 100.0;
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1672 adjust_concurrent_refinement(update_rs_time, update_rs_processed_buffers, update_rs_time_goal_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1673 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1674 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1675
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1676 #define EXT_SIZE_FORMAT "%d%s"
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1677 #define EXT_SIZE_PARAMS(bytes) \
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1678 byte_size_in_proper_unit((bytes)), \
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1679 proper_unit_for_byte_size((bytes))
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1680
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1681 void G1CollectorPolicy::print_heap_transition() {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1682 if (PrintGCDetails) {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1683 YoungList* young_list = _g1->young_list();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1684 size_t eden_bytes = young_list->eden_used_bytes();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1685 size_t survivor_bytes = young_list->survivor_used_bytes();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1686 size_t used_before_gc = _cur_collection_pause_used_at_start_bytes;
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1687 size_t used = _g1->used();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1688 size_t capacity = _g1->capacity();
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1689
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1690 gclog_or_tty->print_cr(
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1691 " [Eden: "EXT_SIZE_FORMAT"->"EXT_SIZE_FORMAT" "
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1692 "Survivors: "EXT_SIZE_FORMAT"->"EXT_SIZE_FORMAT" "
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1693 "Heap: "EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")->"
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1694 EXT_SIZE_FORMAT"("EXT_SIZE_FORMAT")]",
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1695 EXT_SIZE_PARAMS(_eden_bytes_before_gc),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1696 EXT_SIZE_PARAMS(eden_bytes),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1697 EXT_SIZE_PARAMS(_survivor_bytes_before_gc),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1698 EXT_SIZE_PARAMS(survivor_bytes),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1699 EXT_SIZE_PARAMS(used_before_gc),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1700 EXT_SIZE_PARAMS(_capacity_before_gc),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1701 EXT_SIZE_PARAMS(used),
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1702 EXT_SIZE_PARAMS(capacity));
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1703 } else if (PrintGC) {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1704 _g1->print_size_transition(gclog_or_tty,
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1705 _cur_collection_pause_used_at_start_bytes,
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1706 _g1->used(), _g1->capacity());
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1707 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1708 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1709
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1710 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1711
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1712 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1713 double update_rs_processed_buffers,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1714 double goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1715 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1716 ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1717
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	1718 if (G1UseAdaptiveConcRefinement) {
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1719 const int k_gy = 3, k_gr = 6;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1720 const double inc_k = 1.1, dec_k = 0.9;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1721
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1722 int g = cg1r->green_zone();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1723 if (update_rs_time > goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1724 g = (int)(g * dec_k); // Can become 0, that's OK. That would mean a mutator-only processing.
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1725 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1726 if (update_rs_time < goal_ms && update_rs_processed_buffers > g) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1727 g = (int)MAX2(g * inc_k, g + 1.0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1728 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1729 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1730 // Change the refinement threads params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1731 cg1r->set_green_zone(g);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1732 cg1r->set_yellow_zone(g * k_gy);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1733 cg1r->set_red_zone(g * k_gr);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1734 cg1r->reinitialize_threads();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1735
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1736 int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1737 int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1738 cg1r->yellow_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1739 // Change the barrier params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1740 dcqs.set_process_completed_threshold(processing_threshold);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1741 dcqs.set_max_completed_queue(cg1r->red_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1742 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1743
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1744 int curr_queue_size = dcqs.completed_buffers_num();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1745 if (curr_queue_size >= cg1r->yellow_zone()) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1746 dcqs.set_completed_queue_padding(curr_queue_size);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1747 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1748 dcqs.set_completed_queue_padding(0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1749 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1750 dcqs.notify_if_necessary();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1751 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1752
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1753 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1754 G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1755 predict_young_collection_elapsed_time_ms(size_t adjustment) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1756 guarantee( adjustment == 0 \|\| adjustment == 1, "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1757
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1758 G1CollectedHeap* g1h = G1CollectedHeap::heap();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1759 size_t young_num = g1h->young_list()->length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1760 if (young_num == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1761 return 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1762
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1763 young_num += adjustment;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1764 size_t pending_cards = predict_pending_cards();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1765 size_t rs_lengths = g1h->young_list()->sampled_rs_lengths() +
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1766 predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1767 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1768 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1769 card_num = predict_young_card_num(rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1770 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1771 card_num = predict_non_young_card_num(rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1772 size_t young_byte_size = young_num * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1773 double accum_yg_surv_rate =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1774 _short_lived_surv_rate_group->accum_surv_rate(adjustment);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1775
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1776 size_t bytes_to_copy =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1777 (size_t) (accum_yg_surv_rate * (double) HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1778
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1779 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1780 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1781 predict_rs_scan_time_ms(card_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1782 predict_object_copy_time_ms(bytes_to_copy) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1783 predict_young_other_time_ms(young_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1784 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1785 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1786
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1787 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1788 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1789 size_t rs_length = predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1790 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1791 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1792 card_num = predict_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1793 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1794 card_num = predict_non_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1795 return predict_base_elapsed_time_ms(pending_cards, card_num);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1796 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1797
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1798 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1799 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1800 size_t scanned_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1801 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1802 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1803 predict_rs_scan_time_ms(scanned_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1804 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1805 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1806
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1807 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1808 G1CollectorPolicy::predict_region_elapsed_time_ms(HeapRegion* hr,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1809 bool young) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1810 size_t rs_length = hr->rem_set()->occupied();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1811 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1812 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1813 card_num = predict_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1814 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1815 card_num = predict_non_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1816 size_t bytes_to_copy = predict_bytes_to_copy(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1817
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1818 double region_elapsed_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1819 predict_rs_scan_time_ms(card_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1820 predict_object_copy_time_ms(bytes_to_copy);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1821
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1822 if (young)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1823 region_elapsed_time_ms += predict_young_other_time_ms(1);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1824 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1825 region_elapsed_time_ms += predict_non_young_other_time_ms(1);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1826
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1827 return region_elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1828 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1829
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1830 size_t
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1831 G1CollectorPolicy::predict_bytes_to_copy(HeapRegion* hr) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1832 size_t bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1833 if (hr->is_marked())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1834 bytes_to_copy = hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1835 else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1836 guarantee( hr->is_young() && hr->age_in_surv_rate_group() != -1,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1837 "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1838 int age = hr->age_in_surv_rate_group();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1839 double yg_surv_rate = predict_yg_surv_rate(age, hr->surv_rate_group());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1840 bytes_to_copy = (size_t) ((double) hr->used() * yg_surv_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1841 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1842
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1843 return bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1844 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1845
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1846 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1847 G1CollectorPolicy::start_recording_regions() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1848 _recorded_rs_lengths = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1849 _recorded_young_regions = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1850 _recorded_non_young_regions = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1851
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1852 #if PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1853 _recorded_marked_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1854 _recorded_young_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1855 _predicted_bytes_to_copy = 0;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1856 _predicted_rs_lengths = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1857 _predicted_cards_scanned = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1858 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1859 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1860
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1861 void
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1862 G1CollectorPolicy::record_cset_region_info(HeapRegion* hr, bool young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1863 #if PREDICTIONS_VERBOSE
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1864 if (!young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1865 _recorded_marked_bytes += hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1866 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1867 _predicted_bytes_to_copy += predict_bytes_to_copy(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1868 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1869
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1870 size_t rs_length = hr->rem_set()->occupied();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1871 _recorded_rs_lengths += rs_length;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1872 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1873
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1874 void
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1875 G1CollectorPolicy::record_non_young_cset_region(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1876 assert(!hr->is_young(), "should not call this");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1877 ++_recorded_non_young_regions;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1878 record_cset_region_info(hr, false);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1879 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1880
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1881 void
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1882 G1CollectorPolicy::set_recorded_young_regions(size_t n_regions) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1883 _recorded_young_regions = n_regions;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1884 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1885
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1886 void G1CollectorPolicy::set_recorded_young_bytes(size_t bytes) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1887 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1888 _recorded_young_bytes = bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1889 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1890 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1891
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1892 void G1CollectorPolicy::set_recorded_rs_lengths(size_t rs_lengths) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1893 _recorded_rs_lengths = rs_lengths;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1894 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1895
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1896 void G1CollectorPolicy::set_predicted_bytes_to_copy(size_t bytes) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1897 _predicted_bytes_to_copy = bytes;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1898 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1899
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1900 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1901 G1CollectorPolicy::end_recording_regions() {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1902 // The _predicted_pause_time_ms field is referenced in code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1903 // not under PREDICTIONS_VERBOSE. Let's initialize it.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1904 _predicted_pause_time_ms = -1.0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1905
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1906 #if PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1907 _predicted_pending_cards = predict_pending_cards();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1908 _predicted_rs_lengths = _recorded_rs_lengths + predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1909 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1910 _predicted_cards_scanned += predict_young_card_num(_predicted_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1911 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1912 _predicted_cards_scanned +=
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1913 predict_non_young_card_num(_predicted_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1914 _recorded_region_num = _recorded_young_regions + _recorded_non_young_regions;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1915
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1916 _predicted_rs_update_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1917 predict_rs_update_time_ms(_g1->pending_card_num());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1918 _predicted_rs_scan_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1919 predict_rs_scan_time_ms(_predicted_cards_scanned);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1920 _predicted_object_copy_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1921 predict_object_copy_time_ms(_predicted_bytes_to_copy);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1922 _predicted_constant_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1923 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1924 _predicted_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1925 predict_young_other_time_ms(_recorded_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1926 _predicted_non_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1927 predict_non_young_other_time_ms(_recorded_non_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1928
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1929 _predicted_pause_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1930 _predicted_rs_update_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1931 _predicted_rs_scan_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1932 _predicted_object_copy_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1933 _predicted_constant_other_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1934 _predicted_young_other_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1935 _predicted_non_young_other_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1936 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1937 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1938
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1939 void G1CollectorPolicy::check_if_region_is_too_expensive(double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1940 predicted_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1941 // I don't think we need to do this when in young GC mode since
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1942 // marking will be initiated next time we hit the soft limit anyway...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1943 if (predicted_time_ms > _expensive_region_limit_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1944 if (!in_young_gc_mode()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1945 set_full_young_gcs(true);
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1946 // We might want to do something different here. However,
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1947 // right now we don't support the non-generational G1 mode
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1948 // (and in fact we are planning to remove the associated code,
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1949 // see CR 6814390). So, let's leave it as is and this will be
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1950 // removed some time in the future
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1951 ShouldNotReachHere();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1952 set_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1953 } else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1954 // no point in doing another partial one
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1955 _should_revert_to_full_young_gcs = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1956 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1957 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1958
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1959 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1960
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1961
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1962 void G1CollectorPolicy::update_recent_gc_times(double end_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1963 double elapsed_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1964 _recent_gc_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1965 _recent_prev_end_times_for_all_gcs_sec->add(end_time_sec);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1966 _prev_collection_pause_end_ms = end_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1967 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1968
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1969 double G1CollectorPolicy::recent_avg_time_for_pauses_ms() {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1970 if (_recent_pause_times_ms->num() == 0) return (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1971 else return _recent_pause_times_ms->avg();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1972 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1973
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1974 double G1CollectorPolicy::recent_avg_time_for_CH_strong_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1975 if (_recent_CH_strong_roots_times_ms->num() == 0)
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1976 return (double)MaxGCPauseMillis/3.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1977 else return _recent_CH_strong_roots_times_ms->avg();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1978 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1979
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1980 double G1CollectorPolicy::recent_avg_time_for_G1_strong_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1981 if (_recent_G1_strong_roots_times_ms->num() == 0)
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1982 return (double)MaxGCPauseMillis/3.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1983 else return _recent_G1_strong_roots_times_ms->avg();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1984 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1985
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1986 double G1CollectorPolicy::recent_avg_time_for_evac_ms() {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1987 if (_recent_evac_times_ms->num() == 0) return (double)MaxGCPauseMillis/3.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1988 else return _recent_evac_times_ms->avg();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1989 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1990
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1991 int G1CollectorPolicy::number_of_recent_gcs() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1992 assert(_recent_CH_strong_roots_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1993 _recent_G1_strong_roots_times_ms->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1994 assert(_recent_G1_strong_roots_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1995 _recent_evac_times_ms->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1996 assert(_recent_evac_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1997 _recent_pause_times_ms->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1998 assert(_recent_pause_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1999 _recent_CS_bytes_used_before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2000 assert(_recent_CS_bytes_used_before->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2001 _recent_CS_bytes_surviving->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2002 return _recent_pause_times_ms->num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2003 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2004
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2005 double G1CollectorPolicy::recent_avg_survival_fraction() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2006 return recent_avg_survival_fraction_work(_recent_CS_bytes_surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2007 _recent_CS_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2008 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2009
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2010 double G1CollectorPolicy::last_survival_fraction() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2011 return last_survival_fraction_work(_recent_CS_bytes_surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2012 _recent_CS_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2013 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2014
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2015 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2016 G1CollectorPolicy::recent_avg_survival_fraction_work(TruncatedSeq* surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2017 TruncatedSeq* before) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2018 assert(surviving->num() == before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2019 if (before->sum() > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2020 double recent_survival_rate = surviving->sum() / before->sum();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2021 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2022 // fragmentation can produce negative collections.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2023 // Further, we're now always doing parallel collection. But I'm still
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2024 // leaving this here as a placeholder for a more precise assertion later.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2025 // (DLD, 10/05.)
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2026 assert((true \|\| G1CollectedHeap::use_parallel_gc_threads()) \|\|
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2027 _g1->evacuation_failed() \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2028 recent_survival_rate <= 1.0, "Or bad frac");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2029 return recent_survival_rate;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2030 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2031 return 1.0; // Be conservative.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2032 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2033 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2034
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2035 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2036 G1CollectorPolicy::last_survival_fraction_work(TruncatedSeq* surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2037 TruncatedSeq* before) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2038 assert(surviving->num() == before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2039 if (surviving->num() > 0 && before->last() > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2040 double last_survival_rate = surviving->last() / before->last();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2041 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2042 // fragmentation can produce negative collections.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2043 // Further, we're now always doing parallel collection. But I'm still
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2044 // leaving this here as a placeholder for a more precise assertion later.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2045 // (DLD, 10/05.)
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2046 assert((true \|\| G1CollectedHeap::use_parallel_gc_threads()) \|\|
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2047 last_survival_rate <= 1.0, "Or bad frac");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2048 return last_survival_rate;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2049 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2050 return 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2051 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2052 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2053
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2054 static const int survival_min_obs = 5;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2055 static double survival_min_obs_limits[] = { 0.9, 0.7, 0.5, 0.3, 0.1 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2056 static const double min_survival_rate = 0.1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2057
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2058 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2059 G1CollectorPolicy::conservative_avg_survival_fraction_work(double avg,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2060 double latest) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2061 double res = avg;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2062 if (number_of_recent_gcs() < survival_min_obs) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2063 res = MAX2(res, survival_min_obs_limits[number_of_recent_gcs()]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2064 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2065 res = MAX2(res, latest);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2066 res = MAX2(res, min_survival_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2067 // In the parallel case, LAB fragmentation can produce "negative
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2068 // collections"; so can evac failure. Cap at 1.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2069 res = MIN2(res, 1.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2070 return res;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2071 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2072
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2073 size_t G1CollectorPolicy::expansion_amount() {
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	2074 if ((recent_avg_pause_time_ratio() * 100.0) > _gc_overhead_perc) {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2075 // We will double the existing space, or take
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2076 // G1ExpandByPercentOfAvailable % of the available expansion
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2077 // space, whichever is smaller, bounded below by a minimum
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2078 // expansion (unless that's all that's left.)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2079 const size_t min_expand_bytes = 1*M;
2188 c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2152 diff changeset	2080 size_t reserved_bytes = _g1->max_capacity();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2081 size_t committed_bytes = _g1->capacity();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2082 size_t uncommitted_bytes = reserved_bytes - committed_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2083 size_t expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2084 size_t expand_bytes_via_pct =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2085 uncommitted_bytes * G1ExpandByPercentOfAvailable / 100;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2086 expand_bytes = MIN2(expand_bytes_via_pct, committed_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2087 expand_bytes = MAX2(expand_bytes, min_expand_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2088 expand_bytes = MIN2(expand_bytes, uncommitted_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2089 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2090 gclog_or_tty->print("Decided to expand: ratio = %5.2f, "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2091 "committed = %d%s, uncommited = %d%s, via pct = %d%s.\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2092 " Answer = %d.\n",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2093 recent_avg_pause_time_ratio(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2094 byte_size_in_proper_unit(committed_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2095 proper_unit_for_byte_size(committed_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2096 byte_size_in_proper_unit(uncommitted_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2097 proper_unit_for_byte_size(uncommitted_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2098 byte_size_in_proper_unit(expand_bytes_via_pct),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2099 proper_unit_for_byte_size(expand_bytes_via_pct),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2100 byte_size_in_proper_unit(expand_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2101 proper_unit_for_byte_size(expand_bytes));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2102 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2103 return expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2104 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2105 return 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2106 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2107 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2108
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2109 void G1CollectorPolicy::note_start_of_mark_thread() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2110 _mark_thread_startup_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2111 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2112
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2113 class CountCSClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2114 G1CollectorPolicy* _g1_policy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2115 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2116 CountCSClosure(G1CollectorPolicy* g1_policy) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2117 _g1_policy(g1_policy) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2118 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2119 _g1_policy->_bytes_in_collection_set_before_gc += r->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2120 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2121 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2122 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2123
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2124 void G1CollectorPolicy::count_CS_bytes_used() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2125 CountCSClosure cs_closure(this);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2126 _g1->collection_set_iterate(&cs_closure);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2127 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2128
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2129 void G1CollectorPolicy::print_summary (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2130 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2131 NumberSeq* seq) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2132 double sum = seq->sum();
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2133 LineBuffer(level + 1).append_and_print_cr("%-24s = %8.2lf s (avg = %8.2lf ms)",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2134 str, sum / 1000.0, seq->avg());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2135 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2136
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2137 void G1CollectorPolicy::print_summary_sd (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2138 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2139 NumberSeq* seq) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2140 print_summary(level, str, seq);
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2141 LineBuffer(level + 6).append_and_print_cr("(num = %5d, std dev = %8.2lf ms, max = %8.2lf ms)",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2142 seq->num(), seq->sd(), seq->maximum());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2143 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2144
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2145 void G1CollectorPolicy::check_other_times(int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2146 NumberSeq* other_times_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2147 NumberSeq* calc_other_times_ms) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2148 bool should_print = false;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2149 LineBuffer buf(level + 2);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2150
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2151 double max_sum = MAX2(fabs(other_times_ms->sum()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2152 fabs(calc_other_times_ms->sum()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2153 double min_sum = MIN2(fabs(other_times_ms->sum()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2154 fabs(calc_other_times_ms->sum()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2155 double sum_ratio = max_sum / min_sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2156 if (sum_ratio > 1.1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2157 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2158 buf.append_and_print_cr("## CALCULATED OTHER SUM DOESN'T MATCH RECORDED ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2159 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2160
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2161 double max_avg = MAX2(fabs(other_times_ms->avg()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2162 fabs(calc_other_times_ms->avg()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2163 double min_avg = MIN2(fabs(other_times_ms->avg()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2164 fabs(calc_other_times_ms->avg()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2165 double avg_ratio = max_avg / min_avg;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2166 if (avg_ratio > 1.1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2167 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2168 buf.append_and_print_cr("## CALCULATED OTHER AVG DOESN'T MATCH RECORDED ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2169 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2170
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2171 if (other_times_ms->sum() < -0.01) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2172 buf.append_and_print_cr("## RECORDED OTHER SUM IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2173 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2174
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2175 if (other_times_ms->avg() < -0.01) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2176 buf.append_and_print_cr("## RECORDED OTHER AVG IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2177 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2178
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2179 if (calc_other_times_ms->sum() < -0.01) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2180 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2181 buf.append_and_print_cr("## CALCULATED OTHER SUM IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2182 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2183
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2184 if (calc_other_times_ms->avg() < -0.01) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2185 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2186 buf.append_and_print_cr("## CALCULATED OTHER AVG IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2187 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2188
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2189 if (should_print)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2190 print_summary(level, "Other(Calc)", calc_other_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2191 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2192
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2193 void G1CollectorPolicy::print_summary(PauseSummary* summary) const {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2194 bool parallel = G1CollectedHeap::use_parallel_gc_threads();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2195 MainBodySummary* body_summary = summary->main_body_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2196 if (summary->get_total_seq()->num() > 0) {
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2197 print_summary_sd(0, "Evacuation Pauses", summary->get_total_seq());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2198 if (body_summary != NULL) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2199 print_summary(1, "SATB Drain", body_summary->get_satb_drain_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2200 if (parallel) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2201 print_summary(1, "Parallel Time", body_summary->get_parallel_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2202 print_summary(2, "Update RS", body_summary->get_update_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2203 print_summary(2, "Ext Root Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2204 body_summary->get_ext_root_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2205 print_summary(2, "Mark Stack Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2206 body_summary->get_mark_stack_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2207 print_summary(2, "Scan RS", body_summary->get_scan_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2208 print_summary(2, "Object Copy", body_summary->get_obj_copy_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2209 print_summary(2, "Termination", body_summary->get_termination_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2210 print_summary(2, "Other", body_summary->get_parallel_other_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2211 {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2212 NumberSeq* other_parts[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2213 body_summary->get_update_rs_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2214 body_summary->get_ext_root_scan_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2215 body_summary->get_mark_stack_scan_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2216 body_summary->get_scan_rs_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2217 body_summary->get_obj_copy_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2218 body_summary->get_termination_seq()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2219 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2220 NumberSeq calc_other_times_ms(body_summary->get_parallel_seq(),
1779 6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2221 6, other_parts);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2222 check_other_times(2, body_summary->get_parallel_other_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2223 &calc_other_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2224 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2225 print_summary(1, "Mark Closure", body_summary->get_mark_closure_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2226 print_summary(1, "Clear CT", body_summary->get_clear_ct_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2227 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2228 print_summary(1, "Update RS", body_summary->get_update_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2229 print_summary(1, "Ext Root Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2230 body_summary->get_ext_root_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2231 print_summary(1, "Mark Stack Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2232 body_summary->get_mark_stack_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2233 print_summary(1, "Scan RS", body_summary->get_scan_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2234 print_summary(1, "Object Copy", body_summary->get_obj_copy_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2235 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2236 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2237 print_summary(1, "Other", summary->get_other_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2238 {
1779 6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2239 if (body_summary != NULL) {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2240 NumberSeq calc_other_times_ms;
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2241 if (parallel) {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2242 // parallel
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2243 NumberSeq* other_parts[] = {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2244 body_summary->get_satb_drain_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2245 body_summary->get_parallel_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2246 body_summary->get_clear_ct_seq()
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2247 };
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2248 calc_other_times_ms = NumberSeq(summary->get_total_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2249 3, other_parts);
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2250 } else {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2251 // serial
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2252 NumberSeq* other_parts[] = {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2253 body_summary->get_satb_drain_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2254 body_summary->get_update_rs_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2255 body_summary->get_ext_root_scan_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2256 body_summary->get_mark_stack_scan_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2257 body_summary->get_scan_rs_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2258 body_summary->get_obj_copy_seq()
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2259 };
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2260 calc_other_times_ms = NumberSeq(summary->get_total_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2261 6, other_parts);
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2262 }
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2263 check_other_times(1, summary->get_other_seq(), &calc_other_times_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2264 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2265 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2266 } else {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2267 LineBuffer(1).append_and_print_cr("none");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2268 }
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2269 LineBuffer(0).append_and_print_cr("");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2270 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2271
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2272 void G1CollectorPolicy::print_tracing_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2273 if (TraceGen0Time) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2274 gclog_or_tty->print_cr("ALL PAUSES");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2275 print_summary_sd(0, "Total", _all_pause_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2276 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2277 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2278 gclog_or_tty->print_cr(" Full Young GC Pauses: %8d", _full_young_pause_num);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2279 gclog_or_tty->print_cr(" Partial Young GC Pauses: %8d", _partial_young_pause_num);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2280 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2281
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2282 gclog_or_tty->print_cr("EVACUATION PAUSES");
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2283 print_summary(_summary);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2284
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2285 gclog_or_tty->print_cr("MISC");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2286 print_summary_sd(0, "Stop World", _all_stop_world_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2287 print_summary_sd(0, "Yields", _all_yield_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2288 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2289 if (_all_aux_times_ms[i].num() > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2290 char buffer[96];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2291 sprintf(buffer, "Aux%d", i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2292 print_summary_sd(0, buffer, &_all_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2293 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2294 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2295
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2296 size_t all_region_num = _region_num_young + _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2297 gclog_or_tty->print_cr(" New Regions %8d, Young %8d (%6.2lf%%), "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2298 "Tenured %8d (%6.2lf%%)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2299 all_region_num,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2300 _region_num_young,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2301 (double) _region_num_young / (double) all_region_num * 100.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2302 _region_num_tenured,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2303 (double) _region_num_tenured / (double) all_region_num * 100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2304 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2305 if (TraceGen1Time) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2306 if (_all_full_gc_times_ms->num() > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2307 gclog_or_tty->print("\n%4d full_gcs: total time = %8.2f s",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2308 _all_full_gc_times_ms->num(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2309 _all_full_gc_times_ms->sum() / 1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2310 gclog_or_tty->print_cr(" (avg = %8.2fms).", _all_full_gc_times_ms->avg());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2311 gclog_or_tty->print_cr(" [std. dev = %8.2f ms, max = %8.2f ms]",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2312 _all_full_gc_times_ms->sd(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2313 _all_full_gc_times_ms->maximum());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2314 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2315 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2316 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2317
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2318 void G1CollectorPolicy::print_yg_surv_rate_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2319 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2320 _short_lived_surv_rate_group->print_surv_rate_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2321 // add this call for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2322 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2323 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2324
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	2325 void
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	2326 G1CollectorPolicy::update_region_num(bool young) {
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	2327 if (young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2328 ++_region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2329 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2330 ++_region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2331 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2332 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2333
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2334 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2335 // for debugging, bit of a hack...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2336 static char*
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2337 region_num_to_mbs(int length) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2338 static char buffer[64];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2339 double bytes = (double) (length * HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2340 double mbs = bytes / (double) (1024 * 1024);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2341 sprintf(buffer, "%7.2lfMB", mbs);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2342 return buffer;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2343 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2344 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2345
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2346 size_t G1CollectorPolicy::max_regions(int purpose) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2347 switch (purpose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2348 case GCAllocForSurvived:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2349 return _max_survivor_regions;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2350 case GCAllocForTenured:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2351 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2352 default:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2353 ShouldNotReachHere();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2354 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2355 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2356 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2357
1991 016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2358 void G1CollectorPolicy::calculate_max_gc_locker_expansion() {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2359 size_t expansion_region_num = 0;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2360 if (GCLockerEdenExpansionPercent > 0) {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2361 double perc = (double) GCLockerEdenExpansionPercent / 100.0;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2362 double expansion_region_num_d = perc * (double) _young_list_target_length;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2363 // We use ceiling so that if expansion_region_num_d is > 0.0 (but
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2364 // less than 1.0) we'll get 1.
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2365 expansion_region_num = (size_t) ceil(expansion_region_num_d);
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2366 } else {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2367 assert(expansion_region_num == 0, "sanity");
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2368 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2369 _young_list_max_length = _young_list_target_length + expansion_region_num;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2370 assert(_young_list_target_length <= _young_list_max_length, "post-condition");
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2371 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2372
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2373 // Calculates survivor space parameters.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2374 void G1CollectorPolicy::calculate_survivors_policy()
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2375 {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2376 if (G1FixedSurvivorSpaceSize == 0) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2377 _max_survivor_regions = _young_list_target_length / SurvivorRatio;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2378 } else {
547 1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	2379 _max_survivor_regions = G1FixedSurvivorSpaceSize / HeapRegion::GrainBytes;
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2380 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2381
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2382 if (G1FixedTenuringThreshold) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2383 _tenuring_threshold = MaxTenuringThreshold;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2384 } else {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2385 _tenuring_threshold = _survivors_age_table.compute_tenuring_threshold(
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2386 HeapRegion::GrainWords * _max_survivor_regions);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2387 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2388 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2389
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2390 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2391 class HRSortIndexIsOKClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2392 CollectionSetChooser* _chooser;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2393 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2394 HRSortIndexIsOKClosure(CollectionSetChooser* chooser) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2395 _chooser(chooser) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2396
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2397 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2398 if (!r->continuesHumongous()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2399 assert(_chooser->regionProperlyOrdered(r), "Ought to be.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2400 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2401 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2402 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2403 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2404
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2405 bool G1CollectorPolicy_BestRegionsFirst::assertMarkedBytesDataOK() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2406 HRSortIndexIsOKClosure cl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2407 _g1->heap_region_iterate(&cl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2408 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2409 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2410 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2411
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2412 bool
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2413 G1CollectorPolicy::force_initial_mark_if_outside_cycle() {
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2414 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2415 if (!during_cycle) {
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2416 set_initiate_conc_mark_if_possible();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2417 return true;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2418 } else {
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2419 return false;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2420 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2421 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2422
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2423 void
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2424 G1CollectorPolicy::decide_on_conc_mark_initiation() {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2425 // We are about to decide on whether this pause will be an
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2426 // initial-mark pause.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2427
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2428 // First, during_initial_mark_pause() should not be already set. We
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2429 // will set it here if we have to. However, it should be cleared by
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2430 // the end of the pause (it's only set for the duration of an
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2431 // initial-mark pause).
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2432 assert(!during_initial_mark_pause(), "pre-condition");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2433
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2434 if (initiate_conc_mark_if_possible()) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2435 // We had noticed on a previous pause that the heap occupancy has
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2436 // gone over the initiating threshold and we should start a
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2437 // concurrent marking cycle. So we might initiate one.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2438
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2439 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2440 if (!during_cycle) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2441 // The concurrent marking thread is not "during a cycle", i.e.,
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2442 // it has completed the last one. So we can go ahead and
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2443 // initiate a new cycle.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2444
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2445 set_during_initial_mark_pause();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2446
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2447 // And we can now clear initiate_conc_mark_if_possible() as
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2448 // we've already acted on it.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2449 clear_initiate_conc_mark_if_possible();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2450 } else {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2451 // The concurrent marking thread is still finishing up the
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2452 // previous cycle. If we start one right now the two cycles
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2453 // overlap. In particular, the concurrent marking thread might
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2454 // be in the process of clearing the next marking bitmap (which
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2455 // we will use for the next cycle if we start one). Starting a
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2456 // cycle now will be bad given that parts of the marking
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2457 // information might get cleared by the marking thread. And we
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2458 // cannot wait for the marking thread to finish the cycle as it
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2459 // periodically yields while clearing the next marking bitmap
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2460 // and, if it's in a yield point, it's waiting for us to
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2461 // finish. So, at this point we will not start a cycle and we'll
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2462 // let the concurrent marking thread complete the last one.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2463 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2464 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2465 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2466
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2467 void
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2468 G1CollectorPolicy_BestRegionsFirst::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2469 record_collection_pause_start(double start_time_sec, size_t start_used) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2470 G1CollectorPolicy::record_collection_pause_start(start_time_sec, start_used);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2471 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2472
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2473 class KnownGarbageClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2474 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2475
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2476 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2477 KnownGarbageClosure(CollectionSetChooser* hrSorted) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2478 _hrSorted(hrSorted)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2479 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2480
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2481 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2482 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2483 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2484 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2485
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2486 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2487 if (r->is_marked()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2488 // We don't include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2489 // sets because we collect them immediately at the end of a marking
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2490 // cycle. We also don't include young regions because we must
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2491 // include them in the next collection pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2492 if (!r->isHumongous() && !r->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2493 _hrSorted->addMarkedHeapRegion(r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2494 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2495 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2496 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2497 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2498 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2499
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2500 class ParKnownGarbageHRClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2501 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2502 jint _marked_regions_added;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2503 jint _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2504 jint _cur_chunk_idx;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2505 jint _cur_chunk_end; // Cur chunk [_cur_chunk_idx, _cur_chunk_end)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2506 int _worker;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2507 int _invokes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2508
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2509 void get_new_chunk() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2510 _cur_chunk_idx = _hrSorted->getParMarkedHeapRegionChunk(_chunk_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2511 _cur_chunk_end = _cur_chunk_idx + _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2512 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2513 void add_region(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2514 if (_cur_chunk_idx == _cur_chunk_end) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2515 get_new_chunk();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2516 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2517 assert(_cur_chunk_idx < _cur_chunk_end, "postcondition");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2518 _hrSorted->setMarkedHeapRegion(_cur_chunk_idx, r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2519 _marked_regions_added++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2520 _cur_chunk_idx++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2521 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2522
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2523 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2524 ParKnownGarbageHRClosure(CollectionSetChooser* hrSorted,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2525 jint chunk_size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2526 int worker) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2527 _hrSorted(hrSorted), _chunk_size(chunk_size), _worker(worker),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2528 _marked_regions_added(0), _cur_chunk_idx(0), _cur_chunk_end(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2529 _invokes(0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2530 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2531
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2532 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2533 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2534 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2535 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2536 _invokes++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2537
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2538 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2539 if (r->is_marked()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2540 // We don't include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2541 // sets because we collect them immediately at the end of a marking
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2542 // cycle.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2543 // We also do not include young regions in collection sets
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2544 if (!r->isHumongous() && !r->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2545 add_region(r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2546 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2547 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2548 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2549 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2550 jint marked_regions_added() { return _marked_regions_added; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2551 int invokes() { return _invokes; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2552 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2553
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2554 class ParKnownGarbageTask: public AbstractGangTask {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2555 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2556 jint _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2557 G1CollectedHeap* _g1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2558 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2559 ParKnownGarbageTask(CollectionSetChooser* hrSorted, jint chunk_size) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2560 AbstractGangTask("ParKnownGarbageTask"),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2561 _hrSorted(hrSorted), _chunk_size(chunk_size),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2562 _g1(G1CollectedHeap::heap())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2563 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2564
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2565 void work(int i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2566 ParKnownGarbageHRClosure parKnownGarbageCl(_hrSorted, _chunk_size, i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2567 // Back to zero for the claim value.
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2568 _g1->heap_region_par_iterate_chunked(&parKnownGarbageCl, i,
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2569 HeapRegion::InitialClaimValue);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2570 jint regions_added = parKnownGarbageCl.marked_regions_added();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2571 _hrSorted->incNumMarkedHeapRegions(regions_added);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2572 if (G1PrintParCleanupStats) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2573 gclog_or_tty->print_cr(" Thread %d called %d times, added %d regions to list.",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2574 i, parKnownGarbageCl.invokes(), regions_added);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2575 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2576 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2577 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2578
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2579 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2580 G1CollectorPolicy_BestRegionsFirst::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2581 record_concurrent_mark_cleanup_end(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2582 size_t max_live_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2583 double start;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2584 if (G1PrintParCleanupStats) start = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2585 record_concurrent_mark_cleanup_end_work1(freed_bytes, max_live_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2586
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2587 _collectionSetChooser->clearMarkedHeapRegions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2588 double clear_marked_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2589 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2590 clear_marked_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2591 gclog_or_tty->print_cr(" clear marked regions + work1: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2592 (clear_marked_end - start)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2593 }
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2594 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2595 const size_t OverpartitionFactor = 4;
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2596 const size_t MinWorkUnit = 8;
2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2597 const size_t WorkUnit =
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2598 MAX2(_g1->n_regions() / (ParallelGCThreads * OverpartitionFactor),
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2599 MinWorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2600 _collectionSetChooser->prepareForAddMarkedHeapRegionsPar(_g1->n_regions(),
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2601 WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2602 ParKnownGarbageTask parKnownGarbageTask(_collectionSetChooser,
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1394 diff changeset	2603 (int) WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2604 _g1->workers()->run_task(&parKnownGarbageTask);
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2605
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2606 assert(_g1->check_heap_region_claim_values(HeapRegion::InitialClaimValue),
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2607 "sanity check");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2608 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2609 KnownGarbageClosure knownGarbagecl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2610 _g1->heap_region_iterate(&knownGarbagecl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2611 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2612 double known_garbage_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2613 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2614 known_garbage_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2615 gclog_or_tty->print_cr(" compute known garbage: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2616 (known_garbage_end - clear_marked_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2617 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2618 _collectionSetChooser->sortMarkedHeapRegions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2619 double sort_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2620 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2621 sort_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2622 gclog_or_tty->print_cr(" sorting: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2623 (sort_end - known_garbage_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2624 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2625
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2626 record_concurrent_mark_cleanup_end_work2();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2627 double work2_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2628 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2629 work2_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2630 gclog_or_tty->print_cr(" work2: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2631 (work2_end - sort_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2632 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2633 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2634
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2635 // Add the heap region at the head of the non-incremental collection set
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2636 void G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2637 add_to_collection_set(HeapRegion* hr) {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2638 assert(_inc_cset_build_state == Active, "Precondition");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2639 assert(!hr->is_young(), "non-incremental add of young region");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2640
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	2641 if (G1PrintHeapRegions) {
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3765 diff changeset	2642 gclog_or_tty->print_cr("added region to cset "HR_FORMAT,
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3765 diff changeset	2643 HR_FORMAT_PARAMS(hr));
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2644 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2645
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2646 if (_g1->mark_in_progress())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2647 _g1->concurrent_mark()->registerCSetRegion(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2648
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2649 assert(!hr->in_collection_set(), "should not already be in the CSet");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2650 hr->set_in_collection_set(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2651 hr->set_next_in_collection_set(_collection_set);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2652 _collection_set = hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2653 _collection_set_size++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2654 _collection_set_bytes_used_before += hr->used();
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 470 diff changeset	2655 _g1->register_region_with_in_cset_fast_test(hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2656 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2657
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2658 // Initialize the per-collection-set information
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2659 void G1CollectorPolicy::start_incremental_cset_building() {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2660 assert(_inc_cset_build_state == Inactive, "Precondition");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2661
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2662 _inc_cset_head = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2663 _inc_cset_tail = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2664 _inc_cset_size = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2665 _inc_cset_bytes_used_before = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2666
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2667 if (in_young_gc_mode()) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2668 _inc_cset_young_index = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2669 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2670
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2671 _inc_cset_max_finger = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2672 _inc_cset_recorded_young_bytes = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2673 _inc_cset_recorded_rs_lengths = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2674 _inc_cset_predicted_elapsed_time_ms = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2675 _inc_cset_predicted_bytes_to_copy = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2676 _inc_cset_build_state = Active;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2677 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2678
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2679 void G1CollectorPolicy::add_to_incremental_cset_info(HeapRegion* hr, size_t rs_length) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2680 // This routine is used when:
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2681 // * adding survivor regions to the incremental cset at the end of an
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2682 // evacuation pause,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2683 // * adding the current allocation region to the incremental cset
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2684 // when it is retired, and
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2685 // * updating existing policy information for a region in the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2686 // incremental cset via young list RSet sampling.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2687 // Therefore this routine may be called at a safepoint by the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2688 // VM thread, or in-between safepoints by mutator threads (when
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2689 // retiring the current allocation region) or a concurrent
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2690 // refine thread (RSet sampling).
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2691
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2692 double region_elapsed_time_ms = predict_region_elapsed_time_ms(hr, true);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2693 size_t used_bytes = hr->used();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2694
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2695 _inc_cset_recorded_rs_lengths += rs_length;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2696 _inc_cset_predicted_elapsed_time_ms += region_elapsed_time_ms;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2697
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2698 _inc_cset_bytes_used_before += used_bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2699
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2700 // Cache the values we have added to the aggregated informtion
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2701 // in the heap region in case we have to remove this region from
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2702 // the incremental collection set, or it is updated by the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2703 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2704 hr->set_recorded_rs_length(rs_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2705 hr->set_predicted_elapsed_time_ms(region_elapsed_time_ms);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2706
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2707 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2708 size_t bytes_to_copy = predict_bytes_to_copy(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2709 _inc_cset_predicted_bytes_to_copy += bytes_to_copy;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2710
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2711 // Record the number of bytes used in this region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2712 _inc_cset_recorded_young_bytes += used_bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2713
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2714 // Cache the values we have added to the aggregated informtion
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2715 // in the heap region in case we have to remove this region from
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2716 // the incremental collection set, or it is updated by the
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2717 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2718 hr->set_predicted_bytes_to_copy(bytes_to_copy);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2719 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2720 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2721
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2722 void G1CollectorPolicy::remove_from_incremental_cset_info(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2723 // This routine is currently only called as part of the updating of
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2724 // existing policy information for regions in the incremental cset that
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2725 // is performed by the concurrent refine thread(s) as part of young list
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2726 // RSet sampling. Therefore we should not be at a safepoint.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2727
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2728 assert(!SafepointSynchronize::is_at_safepoint(), "should not be at safepoint");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2729 assert(hr->is_young(), "it should be");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2730
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2731 size_t used_bytes = hr->used();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2732 size_t old_rs_length = hr->recorded_rs_length();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2733 double old_elapsed_time_ms = hr->predicted_elapsed_time_ms();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2734
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2735 // Subtract the old recorded/predicted policy information for
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2736 // the given heap region from the collection set info.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2737 _inc_cset_recorded_rs_lengths -= old_rs_length;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2738 _inc_cset_predicted_elapsed_time_ms -= old_elapsed_time_ms;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2739
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2740 _inc_cset_bytes_used_before -= used_bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2741
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2742 // Clear the values cached in the heap region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2743 hr->set_recorded_rs_length(0);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2744 hr->set_predicted_elapsed_time_ms(0);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2745
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2746 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2747 size_t old_predicted_bytes_to_copy = hr->predicted_bytes_to_copy();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2748 _inc_cset_predicted_bytes_to_copy -= old_predicted_bytes_to_copy;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2749
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2750 // Subtract the number of bytes used in this region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2751 _inc_cset_recorded_young_bytes -= used_bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2752
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2753 // Clear the values cached in the heap region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2754 hr->set_predicted_bytes_to_copy(0);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2755 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2756 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2757
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2758 void G1CollectorPolicy::update_incremental_cset_info(HeapRegion* hr, size_t new_rs_length) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2759 // Update the collection set information that is dependent on the new RS length
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2760 assert(hr->is_young(), "Precondition");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2761
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2762 remove_from_incremental_cset_info(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2763 add_to_incremental_cset_info(hr, new_rs_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2764 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2765
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2766 void G1CollectorPolicy::add_region_to_incremental_cset_common(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2767 assert( hr->is_young(), "invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2768 assert( hr->young_index_in_cset() == -1, "invariant" );
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2769 assert(_inc_cset_build_state == Active, "Precondition");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2770
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2771 // We need to clear and set the cached recorded/cached collection set
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2772 // information in the heap region here (before the region gets added
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2773 // to the collection set). An individual heap region's cached values
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2774 // are calculated, aggregated with the policy collection set info,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2775 // and cached in the heap region here (initially) and (subsequently)
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2776 // by the Young List sampling code.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2777
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2778 size_t rs_length = hr->rem_set()->occupied();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2779 add_to_incremental_cset_info(hr, rs_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2780
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2781 HeapWord* hr_end = hr->end();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2782 _inc_cset_max_finger = MAX2(_inc_cset_max_finger, hr_end);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2783
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2784 assert(!hr->in_collection_set(), "invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2785 hr->set_in_collection_set(true);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2786 assert( hr->next_in_collection_set() == NULL, "invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2787
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2788 _inc_cset_size++;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2789 _g1->register_region_with_in_cset_fast_test(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2790
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2791 hr->set_young_index_in_cset((int) _inc_cset_young_index);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2792 ++_inc_cset_young_index;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2793 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2794
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2795 // Add the region at the RHS of the incremental cset
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2796 void G1CollectorPolicy::add_region_to_incremental_cset_rhs(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2797 // We should only ever be appending survivors at the end of a pause
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2798 assert( hr->is_survivor(), "Logic");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2799
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2800 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2801 add_region_to_incremental_cset_common(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2802
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2803 // Now add the region at the right hand side
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2804 if (_inc_cset_tail == NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2805 assert(_inc_cset_head == NULL, "invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2806 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2807 } else {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2808 _inc_cset_tail->set_next_in_collection_set(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2809 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2810 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2811
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2812 if (G1PrintHeapRegions) {
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3765 diff changeset	2813 gclog_or_tty->print_cr(" added region to incremental cset (RHS) "HR_FORMAT,
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3765 diff changeset	2814 HR_FORMAT_PARAMS(hr));
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2815 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2816 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2817
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2818 // Add the region to the LHS of the incremental cset
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2819 void G1CollectorPolicy::add_region_to_incremental_cset_lhs(HeapRegion* hr) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2820 // Survivors should be added to the RHS at the end of a pause
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2821 assert(!hr->is_survivor(), "Logic");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2822
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2823 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2824 add_region_to_incremental_cset_common(hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2825
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2826 // Add the region at the left hand side
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2827 hr->set_next_in_collection_set(_inc_cset_head);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2828 if (_inc_cset_head == NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2829 assert(_inc_cset_tail == NULL, "Invariant");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2830 _inc_cset_tail = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2831 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2832 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2833
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2834 if (G1PrintHeapRegions) {
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3765 diff changeset	2835 gclog_or_tty->print_cr(" added region to incremental cset (LHS) "HR_FORMAT,
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3765 diff changeset	2836 HR_FORMAT_PARAMS(hr));
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2837 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2838 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2839
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2840 #ifndef PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2841 void G1CollectorPolicy::print_collection_set(HeapRegion* list_head, outputStream* st) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2842 assert(list_head == inc_cset_head() \|\| list_head == collection_set(), "must be");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2843
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2844 st->print_cr("\nCollection_set:");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2845 HeapRegion* csr = list_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2846 while (csr != NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2847 HeapRegion* next = csr->next_in_collection_set();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2848 assert(csr->in_collection_set(), "bad CS");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2849 st->print_cr(" [%08x-%08x], t: %08x, P: %08x, N: %08x, C: %08x, "
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2850 "age: %4d, y: %d, surv: %d",
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2851 csr->bottom(), csr->end(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2852 csr->top(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2853 csr->prev_top_at_mark_start(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2854 csr->next_top_at_mark_start(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2855 csr->top_at_conc_mark_count(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2856 csr->age_in_surv_rate_group_cond(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2857 csr->is_young(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2858 csr->is_survivor());
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2859 csr = next;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2860 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2861 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2862 #endif // !PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2863
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	2864 void
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2865 G1CollectorPolicy_BestRegionsFirst::choose_collection_set(
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2866 double target_pause_time_ms) {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2867 // Set this here - in case we're not doing young collections.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2868 double non_young_start_time_sec = os::elapsedTime();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2869
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2870 start_recording_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2871
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2872 guarantee(target_pause_time_ms > 0.0,
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2873 err_msg("target_pause_time_ms = %1.6lf should be positive",
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2874 target_pause_time_ms));
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2875 guarantee(_collection_set == NULL, "Precondition");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2876
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2877 double base_time_ms = predict_base_elapsed_time_ms(_pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2878 double predicted_pause_time_ms = base_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2879
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2880 double time_remaining_ms = target_pause_time_ms - base_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2881
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2882 // the 10% and 50% values are arbitrary...
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2883 if (time_remaining_ms < 0.10 * target_pause_time_ms) {
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2884 time_remaining_ms = 0.50 * target_pause_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2885 _within_target = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2886 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2887 _within_target = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2888 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2889
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2890 // We figure out the number of bytes available for future to-space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2891 // For new regions without marking information, we must assume the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2892 // worst-case of complete survival. If we have marking information for a
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2893 // region, we can bound the amount of live data. We can add a number of
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2894 // such regions, as long as the sum of the live data bounds does not
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2895 // exceed the available evacuation space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2896 size_t max_live_bytes = _g1->free_regions() * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2897
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2898 size_t expansion_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2899 _g1->expansion_regions() * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2900
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2901 _collection_set_bytes_used_before = 0;
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2902 _collection_set_size = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2903
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2904 // Adjust for expansion and slop.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2905 max_live_bytes = max_live_bytes + expansion_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2906
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2907 HeapRegion* hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2908 if (in_young_gc_mode()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2909 double young_start_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2910
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2911 if (G1PolicyVerbose > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2912 gclog_or_tty->print_cr("Adding %d young regions to the CSet",
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2913 _g1->young_list()->length());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2914 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2915
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2916 _young_cset_length = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2917 _last_young_gc_full = full_young_gcs() ? true : false;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2918
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2919 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2920 ++_full_young_pause_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2921 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2922 ++_partial_young_pause_num;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2923
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2924 // The young list is laid with the survivor regions from the previous
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2925 // pause are appended to the RHS of the young list, i.e.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2926 // [Newly Young Regions ++ Survivors from last pause].
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2927
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2928 hr = _g1->young_list()->first_survivor_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2929 while (hr != NULL) {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2930 assert(hr->is_survivor(), "badly formed young list");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2931 hr->set_young();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2932 hr = hr->get_next_young_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2933 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2934
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2935 // Clear the fields that point to the survivor list - they are
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2936 // all young now.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2937 _g1->young_list()->clear_survivors();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2938
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2939 if (_g1->mark_in_progress())
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2940 _g1->concurrent_mark()->register_collection_set_finger(_inc_cset_max_finger);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2941
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2942 _young_cset_length = _inc_cset_young_index;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2943 _collection_set = _inc_cset_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2944 _collection_set_size = _inc_cset_size;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2945 _collection_set_bytes_used_before = _inc_cset_bytes_used_before;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2946
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2947 // For young regions in the collection set, we assume the worst
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2948 // case of complete survival
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2949 max_live_bytes -= _inc_cset_size * HeapRegion::GrainBytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2950
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2951 time_remaining_ms -= _inc_cset_predicted_elapsed_time_ms;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2952 predicted_pause_time_ms += _inc_cset_predicted_elapsed_time_ms;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2953
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2954 // The number of recorded young regions is the incremental
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2955 // collection set's current size
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2956 set_recorded_young_regions(_inc_cset_size);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2957 set_recorded_rs_lengths(_inc_cset_recorded_rs_lengths);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2958 set_recorded_young_bytes(_inc_cset_recorded_young_bytes);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2959 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2960 set_predicted_bytes_to_copy(_inc_cset_predicted_bytes_to_copy);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2961 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2962
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2963 if (G1PolicyVerbose > 0) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2964 gclog_or_tty->print_cr(" Added " PTR_FORMAT " Young Regions to CS.",
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2965 _inc_cset_size);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2966 gclog_or_tty->print_cr(" (" SIZE_FORMAT " KB left in heap.)",
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2967 max_live_bytes/K);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2968 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2969
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2970 assert(_inc_cset_size == _g1->young_list()->length(), "Invariant");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2971
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2972 double young_end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2973 _recorded_young_cset_choice_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2974 (young_end_time_sec - young_start_time_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2975
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2976 // We are doing young collections so reset this.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2977 non_young_start_time_sec = young_end_time_sec;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2978
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2979 // Note we can use either _collection_set_size or
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2980 // _young_cset_length here
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2981 if (_collection_set_size > 0 && _last_young_gc_full) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2982 // don't bother adding more regions...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2983 goto choose_collection_set_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2984 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2985 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2986
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2987 if (!in_young_gc_mode() \|\| !full_young_gcs()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2988 bool should_continue = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2989 NumberSeq seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2990 double avg_prediction = 100000000000000000.0; // something very large
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2991
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2992 do {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2993 hr = _collectionSetChooser->getNextMarkedRegion(time_remaining_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2994 avg_prediction);
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2995 if (hr != NULL) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2996 double predicted_time_ms = predict_region_elapsed_time_ms(hr, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2997 time_remaining_ms -= predicted_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2998 predicted_pause_time_ms += predicted_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2999 add_to_collection_set(hr);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3000 record_non_young_cset_region(hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3001 max_live_bytes -= MIN2(hr->max_live_bytes(), max_live_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3002 if (G1PolicyVerbose > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3003 gclog_or_tty->print_cr(" (" SIZE_FORMAT " KB left in heap.)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3004 max_live_bytes/K);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3005 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3006 seq.add(predicted_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3007 avg_prediction = seq.avg() + seq.sd();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3008 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3009 should_continue =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3010 ( hr != NULL) &&
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3011 ( (adaptive_young_list_length()) ? time_remaining_ms > 0.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3012 : _collection_set_size < _young_list_fixed_length );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3013 } while (should_continue);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3014
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3015 if (!adaptive_young_list_length() &&
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3016 _collection_set_size < _young_list_fixed_length)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3017 _should_revert_to_full_young_gcs = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3018 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3019
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3020 choose_collection_set_end:
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3021 stop_incremental_cset_building();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3022
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3023 count_CS_bytes_used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3024
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3025 end_recording_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3026
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3027 double non_young_end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3028 _recorded_non_young_cset_choice_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3029 (non_young_end_time_sec - non_young_start_time_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3030 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3031
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3032 void G1CollectorPolicy_BestRegionsFirst::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3033 G1CollectorPolicy::record_full_collection_end();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3034 _collectionSetChooser->updateAfterFullCollection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3035 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3036
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3037 void G1CollectorPolicy_BestRegionsFirst::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3038 expand_if_possible(size_t numRegions) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3039 size_t expansion_bytes = numRegions * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3040 _g1->expand(expansion_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3041 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3042
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3043 void G1CollectorPolicy_BestRegionsFirst::
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	3044 record_collection_pause_end() {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	3045 G1CollectorPolicy::record_collection_pause_end();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3046 assert(assertMarkedBytesDataOK(), "Marked regions not OK at pause end.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3047 }

Mercurial > hg > graal-jvmci-8

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 3777:e8b0b0392037