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

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 3285:49a67202bc67

7011855: G1: non-product flag to artificially grow the heap Summary: It introduces non-product cmd line parameter G1DummyRegionsPerGC which indicates how many "dummy" regions to allocate at the end of each GC. This allows the G1 heap to grow artificially and makes concurrent marking cycles more frequent irrespective of what the application that is running is doing. The dummy regions will be found totally empty during cleanup so this parameter can also be used to stress the concurrent cleanup operation. Reviewed-by: brutisso, johnc

author	tonyp
date	Tue, 19 Apr 2011 15:46:59 -0400
parents	5c0b591e1074
children	053d84a76d3d

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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	242 _prev_collection_pause_used_at_end_bytes(0),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	243
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	244 _collection_set(NULL),
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	245 _collection_set_size(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	246 _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	247
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	248 // Incremental CSet attributes
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	249 _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	250 _inc_cset_head(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	251 _inc_cset_tail(NULL),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	252 _inc_cset_size(0),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	253 _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	254 _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	255 _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	256 _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	257 _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	258 _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	259 _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	260
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	261 #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	262 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	263 #endif // _MSC_VER
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	264
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	265 _short_lived_surv_rate_group(new SurvRateGroup(this, "Short Lived",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	266 G1YoungSurvRateNumRegionsSummary)),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	267 _survivor_surv_rate_group(new SurvRateGroup(this, "Survivor",
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	268 G1YoungSurvRateNumRegionsSummary)),
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	269 // add here any more surv rate groups
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	270 _recorded_survivor_regions(0),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	271 _recorded_survivor_head(NULL),
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	272 _recorded_survivor_tail(NULL),
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	273 _survivors_age_table(true),
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	274
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	275 _gc_overhead_perc(0.0)
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	276
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	277 {
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	278 // 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	279 // 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	280 // so it's done as soon as possible.
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	281 HeapRegion::setup_heap_region_size(Arguments::min_heap_size());
1261 0414c1049f15 6923991: G1: improve scalability of RSet scanning iveresov parents: 1111 diff changeset	282 HeapRegionRemSet::setup_remset_size();
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	283
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	284 // Verify PLAB sizes
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	285 const uint region_size = HeapRegion::GrainWords;
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	286 if (YoungPLABSize > region_size \|\| OldPLABSize > region_size) {
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	287 char buffer[128];
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	288 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	289 OldPLABSize > region_size ? "Old" : "Young", region_size);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	290 vm_exit_during_initialization(buffer);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	291 }
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1388 diff changeset	292
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	293 _recent_prev_end_times_for_all_gcs_sec->add(os::elapsedTime());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	294 _prev_collection_pause_end_ms = os::elapsedTime() * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	295
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	296 _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	297 _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	298 _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	299
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	300 _par_last_update_rs_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	301 _par_last_update_rs_processed_buffers = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	302
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	303 _par_last_scan_rs_times_ms = new double[_parallel_gc_threads];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	304
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	305 _par_last_obj_copy_times_ms = 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_termination_times_ms = new double[_parallel_gc_threads];
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	308 _par_last_termination_attempts = new double[_parallel_gc_threads];
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	309 _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	310 _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	311
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	312 // start conservatively
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	313 _expensive_region_limit_ms = 0.5 * (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	314
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	315 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	316
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	317 int index;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	318 if (ParallelGCThreads == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	319 index = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	320 else if (ParallelGCThreads > 8)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	321 index = 7;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	322 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	323 index = ParallelGCThreads - 1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	324
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	325 _pending_card_diff_seq->add(0.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	326 _rs_length_diff_seq->add(rs_length_diff_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	327 _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	328 _fully_young_cards_per_entry_ratio_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	329 fully_young_cards_per_entry_ratio_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	330 _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	331 _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	332 _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	333 _young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	334 young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	335 _non_young_other_cost_per_region_ms_seq->add(
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	336 non_young_other_cost_per_region_ms_defaults[index]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	337
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	338 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	339
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	340 // 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	341 // 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	342 // 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	343 // 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	344 // 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	345 // 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	346 // 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	347 // 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	348 // 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	349
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 // 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	351 // 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	352 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	353 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	354 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	355 "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	356 }
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 }
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 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	359 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	360 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	361 "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	362 }
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 }
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
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 // 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	366 // 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	367 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	368 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	369 // 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	370 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	371 } 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	372 // 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	373 // 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	374 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	375 "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	376 }
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 }
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
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 // 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	380 // 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	381 // 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	382 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	383 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	384 }
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
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 // 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	387 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	388 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	389 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	390 "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	391 "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	392 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	393 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	394 }
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
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	396 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	397 double time_slice = (double) GCPauseIntervalMillis / 1000.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	398 _mmu_tracker = new G1MMUTrackerQueue(time_slice, max_gc_time);
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	399 _sigma = (double) G1ConfidencePercent / 100.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	400
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	401 // start conservatively (around 50ms is about right)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	402 _concurrent_mark_init_times_ms->add(0.05);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	403 _concurrent_mark_remark_times_ms->add(0.05);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	404 _concurrent_mark_cleanup_times_ms->add(0.20);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	405 _tenuring_threshold = MaxTenuringThreshold;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	406
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	407 // if G1FixedSurvivorSpaceSize is 0 which means the size is not
b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	408 // 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	409 // calculate_young_list_target_length during initialization
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	410 _max_survivor_regions = G1FixedSurvivorSpaceSize / HeapRegion::GrainBytes;
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	411
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	412 assert(GCTimeRatio > 0,
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	413 "we should have set it to a default value set_g1_gc_flags() "
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	414 "if a user set it to 0");
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	415 _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio));
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	416
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	417 initialize_all();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	418 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	419
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	420 // Increment "i", mod "len"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	421 static void inc_mod(int& i, int len) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	422 i++; if (i == len) i = 0;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	425 void G1CollectorPolicy::initialize_flags() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	426 set_min_alignment(HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	427 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	428 if (SurvivorRatio < 1) {
1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	429 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	430 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	431 CollectorPolicy::initialize_flags();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	432 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	433
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	434 // 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	435 // 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	436 // 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	437 // 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	438 // 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	439 // 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	440 class G1YoungGenSizer : public TwoGenerationCollectorPolicy {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	441 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	442 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	443 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	444
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	445 public:
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	446 G1YoungGenSizer() {
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	447 initialize_flags();
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	448 initialize_size_info();
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	449 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	450
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	451 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	452 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	453 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	454 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	455 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	456 }
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	457 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	458 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	459 }
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
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	462 void G1CollectorPolicy::init() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	463 // Set aside an initial future to_space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	464 _g1 = G1CollectedHeap::heap();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	465
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	466 assert(Heap_lock->owned_by_self(), "Locking discipline.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	467
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	468 initialize_gc_policy_counters();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	469
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	470 if (G1Gen) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	471 _in_young_gc_mode = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	472
1285 a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	473 G1YoungGenSizer sizer;
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	474 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	475
a1c410de27e4 6928065: G1: use existing command line parameters to set the young generation size tonyp parents: 1283 diff changeset	476 if (UseAdaptiveSizePolicy) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	477 set_adaptive_young_list_length(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	478 _young_list_fixed_length = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	479 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	480 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	481 _young_list_fixed_length = initial_region_num;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	482 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	483 _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	484 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	485 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	486 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	487 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	488 _young_list_fixed_length = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	489 _in_young_gc_mode = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	490 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	491
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	492 // 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	493 // 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	494 start_incremental_cset_building();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	495 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	496
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	497 // Create the jstat counters for the policy.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	498 void G1CollectorPolicy::initialize_gc_policy_counters()
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	499 {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	500 _gc_policy_counters = new GCPolicyCounters("GarbageFirst", 1, 2 + G1Gen);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	501 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	502
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	503 void G1CollectorPolicy::calculate_young_list_min_length() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	504 _young_list_min_length = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	505
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	506 if (!adaptive_young_list_length())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	507 return;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	508
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	509 if (_alloc_rate_ms_seq->num() > 3) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	510 double now_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	511 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	512 double alloc_rate_ms = predict_alloc_rate_ms();
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	513 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	514 size_t current_region_num = _g1->young_list()->length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	515 _young_list_min_length = min_regions + current_region_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	516 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	517 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	518
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	519 void G1CollectorPolicy::calculate_young_list_target_length() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	520 if (adaptive_young_list_length()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	521 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	522 calculate_young_list_target_length(rs_lengths);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	523 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	524 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	525 _young_list_target_length = _young_list_fixed_length;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	526 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	527 _young_list_target_length = _young_list_fixed_length / 2;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	528 }
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	529
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	530 // Make sure we allow the application to allocate at least one
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	531 // region before we need to do a collection again.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	532 size_t min_length = _g1->young_list()->length() + 1;
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	533 _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	534 calculate_max_gc_locker_expansion();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	535 calculate_survivors_policy();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	536 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	537
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	538 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	539 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	540 guarantee( !_in_marking_window \|\| !_last_full_young_gc, "invariant" );
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	541
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	542 double start_time_sec = os::elapsedTime();
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	543 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	544 min_reserve_perc = MIN2((size_t) 50, min_reserve_perc);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	545 size_t reserve_regions =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	546 (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	547
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	548 if (full_young_gcs() && _free_regions_at_end_of_collection > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	549 // 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	550
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	551 double survivor_regions_evac_time =
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	552 predict_survivor_regions_evac_time();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	553
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	554 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	555 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	556 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	557 size_t scanned_cards = predict_young_card_num(adj_rs_lengths);
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	558 double base_time_ms = predict_base_elapsed_time_ms(pending_cards, scanned_cards)
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	559 + 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	560
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	561 // the result
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	562 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	563
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	564 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	565 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	566
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	567 // 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	568 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	569 // 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	570 // 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	571 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	572
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	573 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	574 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	575 // 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	576 // 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	577 // 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	578 // 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	579 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	580 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	581
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	582 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	583 // 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	584 // 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	585 // 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	586
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	587 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	588 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	589 // 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	590 // 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	591 // 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	592 // 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	593 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	594 } else {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	595 // 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	596 // the target pause time so let's search....
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	597
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	598 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	599 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	600
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	601 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	602 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	603 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	604
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	605 // 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	606 // 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	607 // 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	608 // 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	609 // range [max..max+diff]
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	610 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	611 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	612 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	613 max_young_length = min_young_length + diff;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	614 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	615 // 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	616 // within the target pause time.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	617 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	618 assert(min_young_length <= abs_max_young_length, "just checking");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	619 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	620 final_young_length = min_young_length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	621 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	622 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	623 // and we're done!
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	624
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	625 // we should have at least one region in the target young length
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	626 _young_list_target_length =
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	627 final_young_length + _recorded_survivor_regions;
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 // 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	630 // 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	631 // should really adde it to the breakdown of a pause
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	632 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	633 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	634
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	635 #ifdef TRACE_CALC_YOUNG_LENGTH
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	636 // 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	637 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	638 "elapsed %1.2lf ms, (%s%s) " SIZE_FORMAT SIZE_FORMAT,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	639 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	640 _young_list_target_length
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	641 elapsed_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	642 full_young_gcs() ? "full" : "partial",
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	643 during_initial_mark_pause() ? " i-m" : "",
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	644 _in_marking_window,
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	645 _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	646 #endif // TRACE_CALC_YOUNG_LENGTH
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	647
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	648 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	649 // 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	650 // length dictates, we'll violate the pause spacing target (the
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	651 // min length was calculate based on the application's current
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	652 // alloc rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	653
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	654 // so, we have to bite the bullet, and allocate the minimum
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	655 // 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	656
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	657 #ifdef TRACE_CALC_YOUNG_LENGTH
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	658 // leave this in for debugging, just in case
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	659 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	660 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	661 _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	662 #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	663
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	664 _young_list_target_length = _young_list_min_length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	665 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	666 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	667 // 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	668 // to evacuation failure)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	669
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	670 #ifdef TRACE_CALC_YOUNG_LENGTH
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	671 // leave this in for debugging, just in case
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	672 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	673 _young_list_min_length);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	674 #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	675 // 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	676 _young_list_target_length = _young_list_min_length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	677 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	678
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	679 _rs_lengths_prediction = rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	680 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	681
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	682 // 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	683 // returns true iff:
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	684 // 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	685 // the target pause time
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	686 // and:
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	687 // 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	688 // 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	689 //
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	690 bool
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	691 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	692 double base_time_ms,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	693 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	694 double target_pause_time_ms) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	695
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	696 if (young_length >= init_free_regions)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	697 // end condition 1: not enough space for the young regions
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	698 return false;
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 double accum_surv_rate_adj = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	701 double accum_surv_rate =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	702 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	703
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	704 size_t bytes_to_copy =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	705 (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	706
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	707 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	708
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	709 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	710 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	711
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	712 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	713 base_time_ms + copy_time_ms + young_other_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	714
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	715 if (pause_time_ms > target_pause_time_ms)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	716 // end condition 2: over the target pause time
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	717 return false;
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 size_t free_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	720 (init_free_regions - young_length) * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	721
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	722 if ((2.0 + sigma()) * (double) bytes_to_copy > (double) free_bytes)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	723 // end condition 3: out of to-space (conservatively)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	724 return false;
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 // success!
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	727 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	728 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	729
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	730 double G1CollectorPolicy::predict_survivor_regions_evac_time() {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	731 double survivor_regions_evac_time = 0.0;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	732 for (HeapRegion * r = _recorded_survivor_head;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	733 r != NULL && r != _recorded_survivor_tail->get_next_young_region();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	734 r = r->get_next_young_region()) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	735 survivor_regions_evac_time += predict_region_elapsed_time_ms(r, true);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	736 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	737 return survivor_regions_evac_time;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	738 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	739
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	740 void G1CollectorPolicy::check_prediction_validity() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	741 guarantee( adaptive_young_list_length(), "should not call this otherwise" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	742
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	743 size_t rs_lengths = _g1->young_list()->sampled_rs_lengths();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	744 if (rs_lengths > _rs_lengths_prediction) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	745 // add 10% to avoid having to recalculate often
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	746 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	747 calculate_young_list_target_length(rs_lengths_prediction);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	748 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	749 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	750
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	751 HeapWord* G1CollectorPolicy::mem_allocate_work(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	752 bool is_tlab,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	753 bool* gc_overhead_limit_was_exceeded) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	754 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	755 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	756 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	757
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	758 // This method controls how a collector handles one or more
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	759 // of its generations being fully allocated.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	760 HeapWord* G1CollectorPolicy::satisfy_failed_allocation(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	761 bool is_tlab) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	762 guarantee(false, "Not using this policy feature yet.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	763 return NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	764 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	765
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	766
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	767 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	768 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	769 HeapRegion* head = _g1->young_list()->first_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	770 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	771 verify_young_ages(head, _short_lived_surv_rate_group);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	772 // also call verify_young_ages on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	773 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	774
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	775 bool
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	776 G1CollectorPolicy::verify_young_ages(HeapRegion* head,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	777 SurvRateGroup *surv_rate_group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	778 guarantee( surv_rate_group != NULL, "pre-condition" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	779
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	780 const char* name = surv_rate_group->name();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	781 bool ret = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	782 int prev_age = -1;
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 for (HeapRegion* curr = head;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	785 curr != NULL;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	786 curr = curr->get_next_young_region()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	787 SurvRateGroup* group = curr->surv_rate_group();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	788 if (group == NULL && !curr->is_survivor()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	789 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	790 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	791 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	792
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	793 if (surv_rate_group == group) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	794 int age = curr->age_in_surv_rate_group();
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 if (age < 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	797 gclog_or_tty->print_cr("## %s: encountered negative age", name);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	798 ret = false;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	801 if (age <= prev_age) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	802 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	803 "(%d, %d)", name, age, prev_age);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	804 ret = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	805 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	806 prev_age = age;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	807 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	808 }
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 return ret;
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 #endif // PRODUCT
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 void G1CollectorPolicy::record_full_collection_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	815 _cur_collection_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	816 // 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	817 _g1->set_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	818 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	819
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	820 void G1CollectorPolicy::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	821 // Consider this like a collection pause for the purposes of allocation
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	822 // since last pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	823 double end_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	824 double full_gc_time_sec = end_sec - _cur_collection_start_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	825 double full_gc_time_ms = full_gc_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	826
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	827 _all_full_gc_times_ms->add(full_gc_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	828
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	829 update_recent_gc_times(end_sec, full_gc_time_ms);
342 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 _g1->clear_full_collection();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	832
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	833 // "Nuke" the heuristics that control the fully/partially young GC
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	834 // 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	835 // Full GC.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	836 set_full_young_gcs(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	837 _last_full_young_gc = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	838 _should_revert_to_full_young_gcs = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	839 clear_initiate_conc_mark_if_possible();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	840 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	841 _known_garbage_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	842 _known_garbage_ratio = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	843 _in_marking_window = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	844 _in_marking_window_im = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	845
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	846 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	847 // also call this on any additional surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	848
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	849 record_survivor_regions(0, NULL, NULL);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	850
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	851 _prev_region_num_young = _region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	852 _prev_region_num_tenured = _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	853
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	854 _free_regions_at_end_of_collection = _g1->free_regions();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	855 // Reset survivors SurvRateGroup.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	856 _survivor_surv_rate_group->reset();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	857 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	858 calculate_young_list_target_length();
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	859 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	860
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	861 void G1CollectorPolicy::record_before_bytes(size_t bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	862 _bytes_in_to_space_before_gc += bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	863 }
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_after_bytes(size_t bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	866 _bytes_in_to_space_after_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_stop_world_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	870 _stop_world_start = os::elapsedTime();
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_collection_pause_start(double start_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	874 size_t start_used) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	875 if (PrintGCDetails) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	876 gclog_or_tty->stamp(PrintGCTimeStamps);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	877 gclog_or_tty->print("[GC pause");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	878 if (in_young_gc_mode())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	879 gclog_or_tty->print(" (%s)", full_young_gcs() ? "young" : "partial");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	880 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	881
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	882 assert(_g1->used() == _g1->recalculate_used(),
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	883 err_msg("sanity, used: "SIZE_FORMAT" recalculate_used: "SIZE_FORMAT,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	884 _g1->used(), _g1->recalculate_used()));
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	885
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	886 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	887 _all_stop_world_times_ms->add(s_w_t_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	888 _stop_world_start = 0.0;
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 _cur_collection_start_sec = start_time_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	891 _cur_collection_pause_used_at_start_bytes = start_used;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	892 _cur_collection_pause_used_regions_at_start = _g1->used_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	893 _pending_cards = _g1->pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	894 _max_pending_cards = _g1->max_pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	895
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	896 _bytes_in_to_space_before_gc = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	897 _bytes_in_to_space_after_gc = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	898 _bytes_in_collection_set_before_gc = 0;
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 #ifdef DEBUG
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	901 // initialise these to something well known so that we can spot
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	902 // if they are not set properly
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	903
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	904 for (int i = 0; i < _parallel_gc_threads; ++i) {
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	905 _par_last_gc_worker_start_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	906 _par_last_ext_root_scan_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	907 _par_last_mark_stack_scan_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	908 _par_last_update_rs_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	909 _par_last_update_rs_processed_buffers[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	910 _par_last_scan_rs_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	911 _par_last_obj_copy_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	912 _par_last_termination_times_ms[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	913 _par_last_termination_attempts[i] = -1234.0;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	914 _par_last_gc_worker_end_times_ms[i] = -1234.0;
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	915 _par_last_gc_worker_times_ms[i] = -1234.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	916 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	917 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	918
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	919 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	920 _cur_aux_times_ms[i] = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	921 _cur_aux_times_set[i] = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	922 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	923
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	924 _satb_drain_time_set = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	925 _last_satb_drain_processed_buffers = -1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	926
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	927 if (in_young_gc_mode())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	928 _last_young_gc_full = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	929
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	930 // do that for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	931 _short_lived_surv_rate_group->stop_adding_regions();
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	932 _survivors_age_table.clear();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	933
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	934 assert( verify_young_ages(), "region age verification" );
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	937 void G1CollectorPolicy::record_mark_closure_time(double mark_closure_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	938 _mark_closure_time_ms = mark_closure_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	939 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	940
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	941 void G1CollectorPolicy::record_concurrent_mark_init_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	942 _mark_init_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	943 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	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_concurrent_mark_init_end_pre(double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	947 mark_init_elapsed_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	948 _during_marking = true;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	949 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	950 clear_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	951 _cur_mark_stop_world_time_ms = mark_init_elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	952 }
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 void G1CollectorPolicy::record_concurrent_mark_init_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	955 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	956 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	957 _concurrent_mark_init_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	958 record_concurrent_mark_init_end_pre(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	959
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	960 _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	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_remark_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	964 _mark_remark_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	965 _during_marking = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	966 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	967
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	968 void G1CollectorPolicy::record_concurrent_mark_remark_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	969 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	970 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	971 _concurrent_mark_remark_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	972 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	973 _prev_collection_pause_end_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	974
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	975 _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	976 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	977
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	978 void G1CollectorPolicy::record_concurrent_mark_cleanup_start() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	979 _mark_cleanup_start_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	980 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	981
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	982 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	983 G1CollectorPolicy::record_concurrent_mark_cleanup_end(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	984 size_t max_live_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	985 record_concurrent_mark_cleanup_end_work1(freed_bytes, max_live_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	986 record_concurrent_mark_cleanup_end_work2();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	987 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	988
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	989 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	990 G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	991 record_concurrent_mark_cleanup_end_work1(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	992 size_t max_live_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	993 if (_n_marks < 2) _n_marks++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	994 if (G1PolicyVerbose > 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	995 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	996 " (of " SIZE_FORMAT " MB heap).",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	997 max_live_bytes/M, _g1->capacity()/M);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	998 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	999
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1000 // The important thing about this is that it includes "os::elapsedTime".
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1001 void G1CollectorPolicy::record_concurrent_mark_cleanup_end_work2() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1002 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1003 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	1004 _concurrent_mark_cleanup_times_ms->add(elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1005 _cur_mark_stop_world_time_ms += elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1006 _prev_collection_pause_end_ms += elapsed_time_ms;
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 _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	1009
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1010 _num_markings++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1011
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1012 // We did a marking, so reset the "since_last_mark" variables.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1013 double considerConcMarkCost = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1014 // If there are available processors, concurrent activity is free...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1015 if (Threads::number_of_non_daemon_threads() * 2 <
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1016 os::active_processor_count()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1017 considerConcMarkCost = 0.0;
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 _n_pauses_at_mark_end = _n_pauses;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1020 _n_marks_since_last_pause++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1021 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1022
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1023 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1024 G1CollectorPolicy::record_concurrent_mark_cleanup_completed() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1025 if (in_young_gc_mode()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1026 _should_revert_to_full_young_gcs = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1027 _last_full_young_gc = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1028 _in_marking_window = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1029 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	1030 calculate_young_list_target_length();
342 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 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1033
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1034 void G1CollectorPolicy::record_concurrent_pause() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1035 if (_stop_world_start > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1036 double yield_ms = (os::elapsedTime() - _stop_world_start) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1037 _all_yield_times_ms->add(yield_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1038 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1039 }
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 void G1CollectorPolicy::record_concurrent_pause_end() {
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1044 void G1CollectorPolicy::record_collection_pause_end_CH_strong_roots() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1045 _cur_CH_strong_roots_end_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1046 _cur_CH_strong_roots_dur_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1047 (_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	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_collection_pause_end_G1_strong_roots() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1051 _cur_G1_strong_roots_end_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1052 _cur_G1_strong_roots_dur_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1053 (_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	1054 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1055
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1056 template<class T>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1057 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	1058 T sum = (T)0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1059 for (int i = 0; i < n; i++) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1060 int j = (start + i) % N;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1061 sum += sum_arr[j];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1062 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1063 return sum;
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
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1066 void G1CollectorPolicy::print_par_stats(int level,
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1067 const char* str,
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1068 double* data) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1069 double min = data[0], max = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1070 double total = 0.0;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1071 LineBuffer buf(level);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1072 buf.append("[%s (ms):", str);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1073 for (uint i = 0; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1074 double val = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1075 if (val < min)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1076 min = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1077 if (val > max)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1078 max = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1079 total += val;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1080 buf.append(" %3.1lf", val);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1081 }
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1082 buf.append_and_print_cr("");
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1083 double avg = total / (double) ParallelGCThreads;
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1084 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	1085 avg, min, max, max - min);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1086 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1087
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1088 void G1CollectorPolicy::print_par_sizes(int level,
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1610 diff changeset	1089 const char* str,
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1090 double* data) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1091 double min = data[0], max = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1092 double total = 0.0;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1093 LineBuffer buf(level);
c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1094 buf.append("[%s :", str);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1095 for (uint i = 0; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1096 double val = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1097 if (val < min)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1098 min = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1099 if (val > max)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1100 max = val;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1101 total += val;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1102 buf.append(" %d", (int) val);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1103 }
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1104 buf.append_and_print_cr("");
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1105 double avg = total / (double) ParallelGCThreads;
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1106 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	1107 (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	1108 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1109
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1110 void G1CollectorPolicy::print_stats (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1111 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1112 double value) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1113 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	1114 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1115
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1116 void G1CollectorPolicy::print_stats (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1117 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1118 int value) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	1119 LineBuffer(level).append_and_print_cr("[%s: %d]", str, value);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1120 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1121
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1122 double G1CollectorPolicy::avg_value (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1123 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1124 double ret = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1125 for (uint i = 0; i < ParallelGCThreads; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1126 ret += data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1127 return ret / (double) ParallelGCThreads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1128 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1129 return data[0];
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 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1132
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1133 double G1CollectorPolicy::max_value (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1134 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1135 double ret = data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1136 for (uint i = 1; i < ParallelGCThreads; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1137 if (data[i] > ret)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1138 ret = data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1139 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1140 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1141 return data[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1142 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1143 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1144
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1145 double G1CollectorPolicy::sum_of_values (double* data) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1146 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1147 double sum = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1148 for (uint i = 0; i < ParallelGCThreads; i++)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1149 sum += data[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1150 return sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1151 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1152 return data[0];
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 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1155
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1156 double G1CollectorPolicy::max_sum (double* data1,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1157 double* data2) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1158 double ret = data1[0] + data2[0];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1159
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1160 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1161 for (uint i = 1; i < ParallelGCThreads; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1162 double data = data1[i] + data2[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1163 if (data > ret)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1164 ret = data;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1165 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1166 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1167 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1168 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1169
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1170 // Anything below that is considered to be zero
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1171 #define MIN_TIMER_GRANULARITY 0.0000001
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1172
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1173 void G1CollectorPolicy::record_collection_pause_end() {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1174 double end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1175 double elapsed_ms = _last_pause_time_ms;
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1176 bool parallel = G1CollectedHeap::use_parallel_gc_threads();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1177 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	1178 size_t rs_size =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1179 _cur_collection_pause_used_regions_at_start - collection_set_size();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1180 size_t cur_used_bytes = _g1->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1181 assert(cur_used_bytes == _g1->recalculate_used(), "It should!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1182 bool last_pause_included_initial_mark = false;
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1183 bool update_stats = !_g1->evacuation_failed();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1184
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1185 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1186 if (G1YoungSurvRateVerbose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1187 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1188 _short_lived_surv_rate_group->print();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1189 // do that for any other surv rate groups too
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1190 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1191 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1192
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1193 if (in_young_gc_mode()) {
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1194 last_pause_included_initial_mark = during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1195 if (last_pause_included_initial_mark)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1196 record_concurrent_mark_init_end_pre(0.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1197
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1198 size_t min_used_targ =
1283 1c72304f1885 6928073: G1: use existing command line parameters for marking cycle initiation tonyp parents: 1282 diff changeset	1199 (_g1->capacity() / 100) * InitiatingHeapOccupancyPercent;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1200
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1201
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1202 if (!_g1->mark_in_progress() && !_last_full_young_gc) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1203 assert(!last_pause_included_initial_mark, "invariant");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1204 if (cur_used_bytes > min_used_targ &&
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1205 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	1206 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	1207
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1208 // 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	1209 // 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	1210 // 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	1211 set_initiate_conc_mark_if_possible();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1212 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1213 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1214
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1215 _prev_collection_pause_used_at_end_bytes = cur_used_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1216 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1217
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1218 _mmu_tracker->add_pause(end_time_sec - elapsed_ms/1000.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1219 end_time_sec, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1220
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1221 guarantee(_cur_collection_pause_used_regions_at_start >=
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1222 collection_set_size(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1223 "Negative RS size?");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1224
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1225 // This assert is exempted when we're doing parallel collection pauses,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1226 // because the fragmentation caused by the parallel GC allocation buffers
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1227 // 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	1228 // before. Best leave this out until the fragmentation problem is fixed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1229 // Pauses in which evacuation failed can also lead to negative
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1230 // collections, since no space is reclaimed from a region containing an
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1231 // object whose evacuation failed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1232 // 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	1233 // 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	1234 // (DLD, 10/05.)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1235 assert((true \|\| parallel) // Always using GC LABs now.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1236 \|\| _g1->evacuation_failed()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1237 \|\| _cur_collection_pause_used_at_start_bytes >= cur_used_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1238 "Negative collection");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1239
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1240 size_t freed_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1241 _cur_collection_pause_used_at_start_bytes - cur_used_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1242 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	1243
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1244 double survival_fraction =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1245 (double)surviving_bytes/
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1246 (double)_collection_set_bytes_used_before;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1247
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1248 _n_pauses++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1249
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 547 diff changeset	1250 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1251 _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	1252 _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	1253 _recent_evac_times_ms->add(evac_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1254 _recent_pause_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1255
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1256 _recent_rs_sizes->add(rs_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1257
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1258 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1259 // fragmentation can produce negative collections. Same with evac
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1260 // failure.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1261 // 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	1262 // 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	1263 // (DLD, 10/05.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1264 assert((true \|\| parallel)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1265 \|\| _g1->evacuation_failed()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1266 \|\| surviving_bytes <= _collection_set_bytes_used_before,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1267 "Or else negative collection!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1268 _recent_CS_bytes_used_before->add(_collection_set_bytes_used_before);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1269 _recent_CS_bytes_surviving->add(surviving_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1270
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1271 // this is where we update the allocation rate of the application
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1272 double app_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1273 (_cur_collection_start_sec * 1000.0 - _prev_collection_pause_end_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1274 if (app_time_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1275 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1276 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1277 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1278 app_time_ms = 1.0;
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 size_t regions_allocated =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1281 (_region_num_young - _prev_region_num_young) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1282 (_region_num_tenured - _prev_region_num_tenured);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1283 double alloc_rate_ms = (double) regions_allocated / app_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1284 _alloc_rate_ms_seq->add(alloc_rate_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1285 _prev_region_num_young = _region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1286 _prev_region_num_tenured = _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1287
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1288 double interval_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1289 (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	1290 update_recent_gc_times(end_time_sec, elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1291 _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	1292 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	1293 (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	1294 #ifndef PRODUCT
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1295 // 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	1296 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	1297 gclog_or_tty->print_cr("-------------------------------------------");
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1298 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	1299 _recent_gc_times_ms->dump();
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1300 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	1301 _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	1302 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	1303 _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	1304 // 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	1305 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	1306 #endif // !PRODUCT
23b9a8d315fc 6902701: G1: protect debugging code related to 6898948 with a debug flag ysr parents: 1086 diff changeset	1307 // 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	1308 // 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	1309 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	1310 _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	1311 } else {
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1312 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	1313 _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	1314 }
89f1b9ae8991 6898948: G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio() ysr parents: 1043 diff changeset	1315 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1316 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1317
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1318 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1319 gclog_or_tty->print_cr(" Recording collection pause(%d)", _n_pauses);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1320 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1321
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1322 PauseSummary* summary = _summary;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1323
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1324 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	1325 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	1326 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	1327 double update_rs_processed_buffers =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1328 sum_of_values(_par_last_update_rs_processed_buffers);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1329 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	1330 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	1331 double termination_time = avg_value(_par_last_termination_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1332
648 2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1333 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	1334 (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	1335 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	1336 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1337 MainBodySummary* body_summary = summary->main_body_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1338 guarantee(body_summary != NULL, "should not be null!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1339
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1340 if (_satb_drain_time_set)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1341 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	1342 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1343 body_summary->record_satb_drain_time_ms(0.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1344 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	1345 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	1346 body_summary->record_update_rs_time_ms(update_rs_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1347 body_summary->record_scan_rs_time_ms(scan_rs_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1348 body_summary->record_obj_copy_time_ms(obj_copy_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1349 if (parallel) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1350 body_summary->record_parallel_time_ms(_cur_collection_par_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1351 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	1352 body_summary->record_termination_time_ms(termination_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1353 body_summary->record_parallel_other_time_ms(parallel_other_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1354 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1355 body_summary->record_mark_closure_time_ms(_mark_closure_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1356 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1357
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1358 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1359 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	1360 " CH Strong: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1361 " G1 Strong: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1362 " Evac: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1363 " ET-RS: %10.6f ms (avg: %10.6f ms)\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1364 " \|RS\|: " SIZE_FORMAT,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1365 elapsed_ms, recent_avg_time_for_pauses_ms(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1366 _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	1367 _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	1368 evac_ms, recent_avg_time_for_evac_ms(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1369 scan_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1370 recent_avg_time_for_pauses_ms() -
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1371 recent_avg_time_for_G1_strong_ms(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1372 rs_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1373
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1374 gclog_or_tty->print_cr(" Used at start: " SIZE_FORMAT"K"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1375 " At end " SIZE_FORMAT "K\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1376 " garbage : " SIZE_FORMAT "K"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1377 " of " SIZE_FORMAT "K\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1378 " survival : %6.2f%% (%6.2f%% avg)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1379 _cur_collection_pause_used_at_start_bytes/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1380 _g1->used()/K, freed_bytes/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1381 _collection_set_bytes_used_before/K,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1382 survival_fraction*100.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1383 recent_avg_survival_fraction()*100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1384 gclog_or_tty->print_cr(" Recent %% gc pause time: %6.2f",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1385 recent_avg_pause_time_ratio() * 100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1386 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1387
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1388 double other_time_ms = elapsed_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1389
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1390 if (_satb_drain_time_set) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1391 other_time_ms -= _cur_satb_drain_time_ms;
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1392 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1393
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1394 if (parallel) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1395 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	1396 } else {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1397 other_time_ms -=
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1398 update_rs_time +
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1399 ext_root_scan_time + mark_stack_scan_time +
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1400 scan_rs_time + obj_copy_time;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1401 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1402
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1403 if (PrintGCDetails) {
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1404 gclog_or_tty->print_cr("%s, %1.8lf secs]",
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1405 (last_pause_included_initial_mark) ? " (initial-mark)" : "",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1406 elapsed_ms / 1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1407
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1408 if (_satb_drain_time_set) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1409 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	1410 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1411 if (_last_satb_drain_processed_buffers >= 0) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1412 print_stats(2, "Processed Buffers", _last_satb_drain_processed_buffers);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1413 }
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1414 if (parallel) {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1415 print_stats(1, "Parallel Time", _cur_collection_par_time_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1416 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	1417 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	1418 print_par_sizes(3, "Processed Buffers", _par_last_update_rs_processed_buffers);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1419 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	1420 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	1421 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	1422 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	1423 print_par_stats(2, "Termination", _par_last_termination_times_ms);
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1424 print_par_sizes(3, "Termination Attempts", _par_last_termination_attempts);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1425 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	1426
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1427 for (int i = 0; i < _parallel_gc_threads; i++) {
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1428 _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	1429 }
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 2363 diff changeset	1430 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	1431
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1432 print_stats(2, "Other", parallel_other_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1433 print_stats(1, "Clear CT", _cur_clear_ct_time_ms);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1434 } else {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1435 print_stats(1, "Update RS", update_rs_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1436 print_stats(2, "Processed Buffers",
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1437 (int)update_rs_processed_buffers);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1438 print_stats(1, "Ext Root Scanning", ext_root_scan_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1439 print_stats(1, "Mark Stack Scanning", mark_stack_scan_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1440 print_stats(1, "Scan RS", scan_rs_time);
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	1441 print_stats(1, "Object Copying", obj_copy_time);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1442 }
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1443 #ifndef PRODUCT
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1444 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	1445 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	1446 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	1447 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	1448 if (_num_cc_clears > 0) {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1449 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	1450 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 845 diff changeset	1451 #endif
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1452 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	1453 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	1454
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1455 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1456 if (_cur_aux_times_set[i]) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1457 char buffer[96];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1458 sprintf(buffer, "Aux%d", i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1459 print_stats(1, buffer, _cur_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1460 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1461 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1462 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1463 if (PrintGCDetails)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1464 gclog_or_tty->print(" [");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1465 if (PrintGC \|\| PrintGCDetails)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1466 _g1->print_size_transition(gclog_or_tty,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1467 _cur_collection_pause_used_at_start_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1468 _g1->used(), _g1->capacity());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1469 if (PrintGCDetails)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1470 gclog_or_tty->print_cr("]");
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 _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	1473 if (update_stats) {
2314b7336582 6820321: G1: Error: guarantee(check_nums(total, n, parts), "all seq lengths should match") tonyp parents: 640 diff changeset	1474 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	1475 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	1476 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1477 for (int i = 0; i < _aux_num; ++i)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1478 if (_cur_aux_times_set[i])
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1479 _all_aux_times_ms[i].add(_cur_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1480
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1481 // Reset marks-between-pauses counter.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1482 _n_marks_since_last_pause = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1483
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1484 // Update the efficiency-since-mark vars.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1485 double proc_ms = elapsed_ms * (double) _parallel_gc_threads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1486 if (elapsed_ms < MIN_TIMER_GRANULARITY) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1487 // This usually happens due to the timer not having the required
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1488 // granularity. Some Linuxes are the usual culprits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1489 // We'll just set it to something (arbitrarily) small.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1490 proc_ms = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1491 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1492 double cur_efficiency = (double) freed_bytes / proc_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1493
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1494 bool new_in_marking_window = _in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1495 bool new_in_marking_window_im = false;
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1496 if (during_initial_mark_pause()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1497 new_in_marking_window = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1498 new_in_marking_window_im = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1499 }
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 if (in_young_gc_mode()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1502 if (_last_full_young_gc) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1503 set_full_young_gcs(false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1504 _last_full_young_gc = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1505 }
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 if ( !_last_young_gc_full ) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1508 if ( _should_revert_to_full_young_gcs \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1509 _known_garbage_ratio < 0.05 \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1510 (adaptive_young_list_length() &&
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1511 (get_gc_eff_factor() * cur_efficiency < predict_young_gc_eff())) ) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1512 set_full_young_gcs(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1513 }
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 _should_revert_to_full_young_gcs = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1516
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1517 if (_last_young_gc_full && !_during_marking)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1518 _young_gc_eff_seq->add(cur_efficiency);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1519 }
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 _short_lived_surv_rate_group->start_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1522 // do that for any other surv rate groupsx
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1523
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1524 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1525
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	1526 if (update_stats) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1527 double pause_time_ms = elapsed_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1528
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1529 size_t diff = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1530 if (_max_pending_cards >= _pending_cards)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1531 diff = _max_pending_cards - _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1532 _pending_card_diff_seq->add((double) diff);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1533
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1534 double cost_per_card_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1535 if (_pending_cards > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1536 cost_per_card_ms = update_rs_time / (double) _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1537 _cost_per_card_ms_seq->add(cost_per_card_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1538 }
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 size_t cards_scanned = _g1->cards_scanned();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1541
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1542 double cost_per_entry_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1543 if (cards_scanned > 10) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1544 cost_per_entry_ms = scan_rs_time / (double) cards_scanned;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1545 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1546 _cost_per_entry_ms_seq->add(cost_per_entry_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1547 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1548 _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	1549 }
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 if (_max_rs_lengths > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1552 double cards_per_entry_ratio =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1553 (double) cards_scanned / (double) _max_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1554 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1555 _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	1556 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1557 _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	1558 }
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 size_t rs_length_diff = _max_rs_lengths - _recorded_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1561 if (rs_length_diff >= 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1562 _rs_length_diff_seq->add((double) rs_length_diff);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1563
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1564 size_t copied_bytes = surviving_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1565 double cost_per_byte_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1566 if (copied_bytes > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1567 cost_per_byte_ms = obj_copy_time / (double) copied_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1568 if (_in_marking_window)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1569 _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	1570 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1571 _cost_per_byte_ms_seq->add(cost_per_byte_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1572 }
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 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	1575 (update_rs_time + scan_rs_time + obj_copy_time +
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1576 _mark_closure_time_ms + termination_time);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1577
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1578 double young_other_time_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1579 if (_recorded_young_regions > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1580 young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1581 _recorded_young_cset_choice_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1582 _recorded_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1583 _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	1584 (double) _recorded_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1585 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1586 double non_young_other_time_ms = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1587 if (_recorded_non_young_regions > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1588 non_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1589 _recorded_non_young_cset_choice_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1590 _recorded_non_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1591
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1592 _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	1593 (double) _recorded_non_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1594 }
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 double constant_other_time_ms = all_other_time_ms -
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1597 (young_other_time_ms + non_young_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1598 _constant_other_time_ms_seq->add(constant_other_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1599
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1600 double survival_ratio = 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1601 if (_bytes_in_collection_set_before_gc > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1602 survival_ratio = (double) bytes_in_to_space_during_gc() /
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1603 (double) _bytes_in_collection_set_before_gc;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1604 }
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 _pending_cards_seq->add((double) _pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1607 _scanned_cards_seq->add((double) cards_scanned);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1608 _rs_lengths_seq->add((double) _max_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1609
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1610 double expensive_region_limit_ms =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1611 (double) MaxGCPauseMillis - predict_constant_other_time_ms();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1612 if (expensive_region_limit_ms < 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1613 // 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	1614 // than the max pause time
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1615 expensive_region_limit_ms = (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1616 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1617 _expensive_region_limit_ms = expensive_region_limit_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1618
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1619 if (PREDICTIONS_VERBOSE) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1620 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1621 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	1622 "REGIONS %d %d %d "
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1623 "PENDING_CARDS %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1624 "CARDS_SCANNED %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1625 "RS_LENGTHS %d %d "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1626 "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	1627 "SURVIVAL_RATIO %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1628 "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	1629 "OTHER_YOUNG %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1630 "OTHER_NON_YOUNG %1.6lf %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1631 "VTIME_DIFF %1.6lf TERMINATION %1.6lf "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1632 "ELAPSED %1.6lf %1.6lf ",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1633 _cur_collection_start_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1634 (!_last_young_gc_full) ? 2 :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1635 (last_pause_included_initial_mark) ? 1 : 0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1636 _recorded_region_num,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1637 _recorded_young_regions,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1638 _recorded_non_young_regions,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1639 _predicted_pending_cards, _pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1640 _predicted_cards_scanned, cards_scanned,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1641 _predicted_rs_lengths, _max_rs_lengths,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1642 _predicted_rs_update_time_ms, update_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1643 _predicted_rs_scan_time_ms, scan_rs_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1644 _predicted_survival_ratio, survival_ratio,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1645 _predicted_object_copy_time_ms, obj_copy_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1646 _predicted_constant_other_time_ms, constant_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1647 _predicted_young_other_time_ms, young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1648 _predicted_non_young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1649 non_young_other_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1650 _vtime_diff_ms, termination_time,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1651 _predicted_pause_time_ms, elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1652 }
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 if (G1PolicyVerbose > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1655 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	1656 _predicted_pause_time_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1657 (_within_target) ? "within" : "outside",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1658 elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1659 }
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 _in_marking_window = new_in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1664 _in_marking_window_im = new_in_marking_window_im;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1665 _free_regions_at_end_of_collection = _g1->free_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1666 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	1667 calculate_young_list_target_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1668
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1669 // 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	1670 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	1671 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	1672 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1673 }
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 // <NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1676
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1677 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1678 double update_rs_processed_buffers,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1679 double goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1680 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1681 ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1682
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	1683 if (G1UseAdaptiveConcRefinement) {
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1684 const int k_gy = 3, k_gr = 6;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1685 const double inc_k = 1.1, dec_k = 0.9;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1686
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1687 int g = cg1r->green_zone();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1688 if (update_rs_time > goal_ms) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1689 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	1690 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1691 if (update_rs_time < goal_ms && update_rs_processed_buffers > g) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1692 g = (int)MAX2(g * inc_k, g + 1.0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1693 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1694 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1695 // Change the refinement threads params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1696 cg1r->set_green_zone(g);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1697 cg1r->set_yellow_zone(g * k_gy);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1698 cg1r->set_red_zone(g * k_gr);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1699 cg1r->reinitialize_threads();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1700
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1701 int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1702 int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1703 cg1r->yellow_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1704 // Change the barrier params
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1705 dcqs.set_process_completed_threshold(processing_threshold);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1706 dcqs.set_max_completed_queue(cg1r->red_zone());
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1707 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1708
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1709 int curr_queue_size = dcqs.completed_buffers_num();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1710 if (curr_queue_size >= cg1r->yellow_zone()) {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1711 dcqs.set_completed_queue_padding(curr_queue_size);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1712 } else {
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1713 dcqs.set_completed_queue_padding(0);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1714 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1715 dcqs.notify_if_necessary();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1716 }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1088 diff changeset	1717
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1718 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1719 G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1720 predict_young_collection_elapsed_time_ms(size_t adjustment) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1721 guarantee( adjustment == 0 \|\| adjustment == 1, "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1722
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1723 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	1724 size_t young_num = g1h->young_list()->length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1725 if (young_num == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1726 return 0.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1727
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1728 young_num += adjustment;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1729 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	1730 size_t rs_lengths = g1h->young_list()->sampled_rs_lengths() +
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1731 predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1732 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1733 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1734 card_num = predict_young_card_num(rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1735 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1736 card_num = predict_non_young_card_num(rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1737 size_t young_byte_size = young_num * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1738 double accum_yg_surv_rate =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1739 _short_lived_surv_rate_group->accum_surv_rate(adjustment);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1740
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1741 size_t bytes_to_copy =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1742 (size_t) (accum_yg_surv_rate * (double) HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1743
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1744 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1745 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1746 predict_rs_scan_time_ms(card_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1747 predict_object_copy_time_ms(bytes_to_copy) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1748 predict_young_other_time_ms(young_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1749 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1750 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1751
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1752 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1753 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1754 size_t rs_length = predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1755 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1756 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1757 card_num = predict_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1758 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1759 card_num = predict_non_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1760 return predict_base_elapsed_time_ms(pending_cards, card_num);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1761 }
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 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1764 G1CollectorPolicy::predict_base_elapsed_time_ms(size_t pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1765 size_t scanned_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1766 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1767 predict_rs_update_time_ms(pending_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1768 predict_rs_scan_time_ms(scanned_cards) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1769 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1770 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1771
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1772 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1773 G1CollectorPolicy::predict_region_elapsed_time_ms(HeapRegion* hr,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1774 bool young) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1775 size_t rs_length = hr->rem_set()->occupied();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1776 size_t card_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1777 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1778 card_num = predict_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1779 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1780 card_num = predict_non_young_card_num(rs_length);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1781 size_t bytes_to_copy = predict_bytes_to_copy(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1782
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1783 double region_elapsed_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1784 predict_rs_scan_time_ms(card_num) +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1785 predict_object_copy_time_ms(bytes_to_copy);
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 if (young)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1788 region_elapsed_time_ms += predict_young_other_time_ms(1);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1789 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1790 region_elapsed_time_ms += predict_non_young_other_time_ms(1);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1791
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1792 return region_elapsed_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1793 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1794
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1795 size_t
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1796 G1CollectorPolicy::predict_bytes_to_copy(HeapRegion* hr) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1797 size_t bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1798 if (hr->is_marked())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1799 bytes_to_copy = hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1800 else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1801 guarantee( hr->is_young() && hr->age_in_surv_rate_group() != -1,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1802 "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1803 int age = hr->age_in_surv_rate_group();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	1804 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	1805 bytes_to_copy = (size_t) ((double) hr->used() * yg_surv_rate);
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1808 return bytes_to_copy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1809 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1810
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1811 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1812 G1CollectorPolicy::start_recording_regions() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1813 _recorded_rs_lengths = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1814 _recorded_young_regions = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1815 _recorded_non_young_regions = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1816
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1817 #if PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1818 _recorded_marked_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1819 _recorded_young_bytes = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1820 _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	1821 _predicted_rs_lengths = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1822 _predicted_cards_scanned = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1823 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1824 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1825
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1826 void
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1827 G1CollectorPolicy::record_cset_region_info(HeapRegion* hr, bool young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1828 #if PREDICTIONS_VERBOSE
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1829 if (!young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1830 _recorded_marked_bytes += hr->max_live_bytes();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1831 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1832 _predicted_bytes_to_copy += predict_bytes_to_copy(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1833 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1834
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1835 size_t rs_length = hr->rem_set()->occupied();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1836 _recorded_rs_lengths += rs_length;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1837 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1838
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1839 void
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1840 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	1841 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	1842 ++_recorded_non_young_regions;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1843 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	1844 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1845
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1846 void
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1847 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	1848 _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	1849 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1850
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1851 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	1852 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1853 _recorded_young_bytes = bytes;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1854 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1855 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1856
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1857 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	1858 _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	1859 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1860
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1861 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	1862 _predicted_bytes_to_copy = bytes;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1863 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1864
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1865 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1866 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	1867 // 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	1868 // 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	1869 _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	1870
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1871 #if PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1872 _predicted_pending_cards = predict_pending_cards();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1873 _predicted_rs_lengths = _recorded_rs_lengths + predict_rs_length_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1874 if (full_young_gcs())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1875 _predicted_cards_scanned += predict_young_card_num(_predicted_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1876 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1877 _predicted_cards_scanned +=
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1878 predict_non_young_card_num(_predicted_rs_lengths);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1879 _recorded_region_num = _recorded_young_regions + _recorded_non_young_regions;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1880
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1881 _predicted_rs_update_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1882 predict_rs_update_time_ms(_g1->pending_card_num());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1883 _predicted_rs_scan_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1884 predict_rs_scan_time_ms(_predicted_cards_scanned);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1885 _predicted_object_copy_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1886 predict_object_copy_time_ms(_predicted_bytes_to_copy);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1887 _predicted_constant_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1888 predict_constant_other_time_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1889 _predicted_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1890 predict_young_other_time_ms(_recorded_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1891 _predicted_non_young_other_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1892 predict_non_young_other_time_ms(_recorded_non_young_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1893
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1894 _predicted_pause_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1895 _predicted_rs_update_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1896 _predicted_rs_scan_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1897 _predicted_object_copy_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1898 _predicted_constant_other_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1899 _predicted_young_other_time_ms +
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1900 _predicted_non_young_other_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1901 #endif // PREDICTIONS_VERBOSE
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1902 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1903
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1904 void G1CollectorPolicy::check_if_region_is_too_expensive(double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1905 predicted_time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1906 // 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	1907 // 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	1908 if (predicted_time_ms > _expensive_region_limit_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1909 if (!in_young_gc_mode()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1910 set_full_young_gcs(true);
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1911 // We might want to do something different here. However,
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1912 // 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	1913 // (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	1914 // 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	1915 // removed some time in the future
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1916 ShouldNotReachHere();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1917 set_during_initial_mark_pause();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1918 } else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1919 // no point in doing another partial one
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1920 _should_revert_to_full_young_gcs = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1921 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1922 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1923
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1924 // </NEW PREDICTION>
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1925
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1926
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1927 void G1CollectorPolicy::update_recent_gc_times(double end_time_sec,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1928 double elapsed_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1929 _recent_gc_times_ms->add(elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1930 _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	1931 _prev_collection_pause_end_ms = end_time_sec * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1932 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1933
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1934 double G1CollectorPolicy::recent_avg_time_for_pauses_ms() {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1935 if (_recent_pause_times_ms->num() == 0) return (double) MaxGCPauseMillis;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1936 else return _recent_pause_times_ms->avg();
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 double G1CollectorPolicy::recent_avg_time_for_CH_strong_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1940 if (_recent_CH_strong_roots_times_ms->num() == 0)
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1941 return (double)MaxGCPauseMillis/3.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1942 else return _recent_CH_strong_roots_times_ms->avg();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1943 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1944
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1945 double G1CollectorPolicy::recent_avg_time_for_G1_strong_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1946 if (_recent_G1_strong_roots_times_ms->num() == 0)
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1947 return (double)MaxGCPauseMillis/3.0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1948 else return _recent_G1_strong_roots_times_ms->avg();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1949 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1950
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1951 double G1CollectorPolicy::recent_avg_time_for_evac_ms() {
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	1952 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	1953 else return _recent_evac_times_ms->avg();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1954 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1955
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1956 int G1CollectorPolicy::number_of_recent_gcs() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1957 assert(_recent_CH_strong_roots_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1958 _recent_G1_strong_roots_times_ms->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1959 assert(_recent_G1_strong_roots_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1960 _recent_evac_times_ms->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1961 assert(_recent_evac_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1962 _recent_pause_times_ms->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1963 assert(_recent_pause_times_ms->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1964 _recent_CS_bytes_used_before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1965 assert(_recent_CS_bytes_used_before->num() ==
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1966 _recent_CS_bytes_surviving->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1967 return _recent_pause_times_ms->num();
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1970 double G1CollectorPolicy::recent_avg_survival_fraction() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1971 return recent_avg_survival_fraction_work(_recent_CS_bytes_surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1972 _recent_CS_bytes_used_before);
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1975 double G1CollectorPolicy::last_survival_fraction() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1976 return last_survival_fraction_work(_recent_CS_bytes_surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1977 _recent_CS_bytes_used_before);
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1981 G1CollectorPolicy::recent_avg_survival_fraction_work(TruncatedSeq* surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1982 TruncatedSeq* before) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1983 assert(surviving->num() == before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1984 if (before->sum() > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1985 double recent_survival_rate = surviving->sum() / before->sum();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1986 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1987 // fragmentation can produce negative collections.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1988 // 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	1989 // 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	1990 // (DLD, 10/05.)
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	1991 assert((true \|\| G1CollectedHeap::use_parallel_gc_threads()) \|\|
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1992 _g1->evacuation_failed() \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1993 recent_survival_rate <= 1.0, "Or bad frac");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1994 return recent_survival_rate;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1995 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1996 return 1.0; // Be conservative.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1997 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1998 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1999
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2000 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2001 G1CollectorPolicy::last_survival_fraction_work(TruncatedSeq* surviving,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2002 TruncatedSeq* before) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2003 assert(surviving->num() == before->num(), "Sequence out of sync");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2004 if (surviving->num() > 0 && before->last() > 0.0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2005 double last_survival_rate = surviving->last() / before->last();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2006 // We exempt parallel collection from this check because Alloc Buffer
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2007 // fragmentation can produce negative collections.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2008 // 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	2009 // 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	2010 // (DLD, 10/05.)
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2011 assert((true \|\| G1CollectedHeap::use_parallel_gc_threads()) \|\|
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2012 last_survival_rate <= 1.0, "Or bad frac");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2013 return last_survival_rate;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2014 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2015 return 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2016 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2017 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2018
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2019 static const int survival_min_obs = 5;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2020 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	2021 static const double min_survival_rate = 0.1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2022
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2023 double
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2024 G1CollectorPolicy::conservative_avg_survival_fraction_work(double avg,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2025 double latest) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2026 double res = avg;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2027 if (number_of_recent_gcs() < survival_min_obs) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2028 res = MAX2(res, survival_min_obs_limits[number_of_recent_gcs()]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2029 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2030 res = MAX2(res, latest);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2031 res = MAX2(res, min_survival_rate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2032 // In the parallel case, LAB fragmentation can produce "negative
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2033 // collections"; so can evac failure. Cap at 1.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2034 res = MIN2(res, 1.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2035 return res;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2036 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2037
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2038 size_t G1CollectorPolicy::expansion_amount() {
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1285 diff changeset	2039 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	2040 // We will double the existing space, or take
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2041 // G1ExpandByPercentOfAvailable % of the available expansion
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2042 // space, whichever is smaller, bounded below by a minimum
20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2043 // expansion (unless that's all that's left.)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2044 const size_t min_expand_bytes = 1*M;
2188 c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2152 diff changeset	2045 size_t reserved_bytes = _g1->max_capacity();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2046 size_t committed_bytes = _g1->capacity();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2047 size_t uncommitted_bytes = reserved_bytes - committed_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2048 size_t expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2049 size_t expand_bytes_via_pct =
751 20c6f43950b5 6490395: G1: Tidy up command line flags. johnc parents: 677 diff changeset	2050 uncommitted_bytes * G1ExpandByPercentOfAvailable / 100;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2051 expand_bytes = MIN2(expand_bytes_via_pct, committed_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2052 expand_bytes = MAX2(expand_bytes, min_expand_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2053 expand_bytes = MIN2(expand_bytes, uncommitted_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2054 if (G1PolicyVerbose > 1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2055 gclog_or_tty->print("Decided to expand: ratio = %5.2f, "
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2056 "committed = %d%s, uncommited = %d%s, via pct = %d%s.\n"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2057 " Answer = %d.\n",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2058 recent_avg_pause_time_ratio(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2059 byte_size_in_proper_unit(committed_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2060 proper_unit_for_byte_size(committed_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2061 byte_size_in_proper_unit(uncommitted_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2062 proper_unit_for_byte_size(uncommitted_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2063 byte_size_in_proper_unit(expand_bytes_via_pct),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2064 proper_unit_for_byte_size(expand_bytes_via_pct),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2065 byte_size_in_proper_unit(expand_bytes),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2066 proper_unit_for_byte_size(expand_bytes));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2067 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2068 return expand_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2069 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2070 return 0;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2074 void G1CollectorPolicy::note_start_of_mark_thread() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2075 _mark_thread_startup_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2076 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2077
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2078 class CountCSClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2079 G1CollectorPolicy* _g1_policy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2080 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2081 CountCSClosure(G1CollectorPolicy* g1_policy) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2082 _g1_policy(g1_policy) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2083 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2084 _g1_policy->_bytes_in_collection_set_before_gc += r->used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2085 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2086 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2087 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2088
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2089 void G1CollectorPolicy::count_CS_bytes_used() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2090 CountCSClosure cs_closure(this);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2091 _g1->collection_set_iterate(&cs_closure);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2092 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2093
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2094 void G1CollectorPolicy::print_summary (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2095 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2096 NumberSeq* seq) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2097 double sum = seq->sum();
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2098 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	2099 str, sum / 1000.0, seq->avg());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2100 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2101
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2102 void G1CollectorPolicy::print_summary_sd (int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2103 const char* str,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2104 NumberSeq* seq) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2105 print_summary(level, str, seq);
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2106 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	2107 seq->num(), seq->sd(), seq->maximum());
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2110 void G1CollectorPolicy::check_other_times(int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2111 NumberSeq* other_times_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2112 NumberSeq* calc_other_times_ms) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2113 bool should_print = false;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2114 LineBuffer buf(level + 2);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2115
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2116 double max_sum = MAX2(fabs(other_times_ms->sum()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2117 fabs(calc_other_times_ms->sum()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2118 double min_sum = MIN2(fabs(other_times_ms->sum()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2119 fabs(calc_other_times_ms->sum()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2120 double sum_ratio = max_sum / min_sum;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2121 if (sum_ratio > 1.1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2122 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2123 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	2124 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2125
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2126 double max_avg = MAX2(fabs(other_times_ms->avg()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2127 fabs(calc_other_times_ms->avg()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2128 double min_avg = MIN2(fabs(other_times_ms->avg()),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2129 fabs(calc_other_times_ms->avg()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2130 double avg_ratio = max_avg / min_avg;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2131 if (avg_ratio > 1.1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2132 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2133 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	2134 }
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 if (other_times_ms->sum() < -0.01) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2137 buf.append_and_print_cr("## RECORDED OTHER SUM IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2138 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2139
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2140 if (other_times_ms->avg() < -0.01) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2141 buf.append_and_print_cr("## RECORDED OTHER AVG IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2142 }
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 if (calc_other_times_ms->sum() < -0.01) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2145 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2146 buf.append_and_print_cr("## CALCULATED OTHER SUM IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2147 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2148
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2149 if (calc_other_times_ms->avg() < -0.01) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2150 should_print = true;
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2151 buf.append_and_print_cr("## CALCULATED OTHER AVG IS NEGATIVE ###");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2152 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2153
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2154 if (should_print)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2155 print_summary(level, "Other(Calc)", calc_other_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2156 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2157
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2158 void G1CollectorPolicy::print_summary(PauseSummary* summary) const {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2159 bool parallel = G1CollectedHeap::use_parallel_gc_threads();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2160 MainBodySummary* body_summary = summary->main_body_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2161 if (summary->get_total_seq()->num() > 0) {
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2162 print_summary_sd(0, "Evacuation Pauses", summary->get_total_seq());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2163 if (body_summary != NULL) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2164 print_summary(1, "SATB Drain", body_summary->get_satb_drain_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2165 if (parallel) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2166 print_summary(1, "Parallel Time", body_summary->get_parallel_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2167 print_summary(2, "Update RS", body_summary->get_update_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2168 print_summary(2, "Ext Root Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2169 body_summary->get_ext_root_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2170 print_summary(2, "Mark Stack Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2171 body_summary->get_mark_stack_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2172 print_summary(2, "Scan RS", body_summary->get_scan_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2173 print_summary(2, "Object Copy", body_summary->get_obj_copy_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2174 print_summary(2, "Termination", body_summary->get_termination_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2175 print_summary(2, "Other", body_summary->get_parallel_other_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2176 {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2177 NumberSeq* other_parts[] = {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2178 body_summary->get_update_rs_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2179 body_summary->get_ext_root_scan_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2180 body_summary->get_mark_stack_scan_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2181 body_summary->get_scan_rs_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2182 body_summary->get_obj_copy_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2183 body_summary->get_termination_seq()
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2184 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2185 NumberSeq calc_other_times_ms(body_summary->get_parallel_seq(),
1779 6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2186 6, other_parts);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2187 check_other_times(2, body_summary->get_parallel_other_seq(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2188 &calc_other_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2189 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2190 print_summary(1, "Mark Closure", body_summary->get_mark_closure_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2191 print_summary(1, "Clear CT", body_summary->get_clear_ct_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2192 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2193 print_summary(1, "Update RS", body_summary->get_update_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2194 print_summary(1, "Ext Root Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2195 body_summary->get_ext_root_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2196 print_summary(1, "Mark Stack Scanning",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2197 body_summary->get_mark_stack_scan_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2198 print_summary(1, "Scan RS", body_summary->get_scan_rs_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2199 print_summary(1, "Object Copy", body_summary->get_obj_copy_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2200 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2201 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2202 print_summary(1, "Other", summary->get_other_seq());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2203 {
1779 6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2204 if (body_summary != NULL) {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2205 NumberSeq calc_other_times_ms;
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2206 if (parallel) {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2207 // parallel
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2208 NumberSeq* other_parts[] = {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2209 body_summary->get_satb_drain_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2210 body_summary->get_parallel_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2211 body_summary->get_clear_ct_seq()
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2212 };
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2213 calc_other_times_ms = NumberSeq(summary->get_total_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2214 3, other_parts);
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2215 } else {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2216 // serial
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2217 NumberSeq* other_parts[] = {
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2218 body_summary->get_satb_drain_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2219 body_summary->get_update_rs_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2220 body_summary->get_ext_root_scan_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2221 body_summary->get_mark_stack_scan_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2222 body_summary->get_scan_rs_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2223 body_summary->get_obj_copy_seq()
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2224 };
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2225 calc_other_times_ms = NumberSeq(summary->get_total_seq(),
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2226 6, other_parts);
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2227 }
6eddcbe17c83 6981746: G1: SEGV with -XX:+TraceGen0Time johnc parents: 1707 diff changeset	2228 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	2229 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2230 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2231 } else {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2232 LineBuffer(1).append_and_print_cr("none");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2233 }
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2234 LineBuffer(0).append_and_print_cr("");
342 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 void G1CollectorPolicy::print_tracing_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2238 if (TraceGen0Time) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2239 gclog_or_tty->print_cr("ALL PAUSES");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2240 print_summary_sd(0, "Total", _all_pause_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2241 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2242 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2243 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	2244 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	2245 gclog_or_tty->print_cr("");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2246
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2247 gclog_or_tty->print_cr("EVACUATION PAUSES");
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2248 print_summary(_summary);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2249
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2250 gclog_or_tty->print_cr("MISC");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2251 print_summary_sd(0, "Stop World", _all_stop_world_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2252 print_summary_sd(0, "Yields", _all_yield_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2253 for (int i = 0; i < _aux_num; ++i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2254 if (_all_aux_times_ms[i].num() > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2255 char buffer[96];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2256 sprintf(buffer, "Aux%d", i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2257 print_summary_sd(0, buffer, &_all_aux_times_ms[i]);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2258 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2259 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2260
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2261 size_t all_region_num = _region_num_young + _region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2262 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	2263 "Tenured %8d (%6.2lf%%)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2264 all_region_num,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2265 _region_num_young,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2266 (double) _region_num_young / (double) all_region_num * 100.0,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2267 _region_num_tenured,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2268 (double) _region_num_tenured / (double) all_region_num * 100.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2269 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2270 if (TraceGen1Time) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2271 if (_all_full_gc_times_ms->num() > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2272 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	2273 _all_full_gc_times_ms->num(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2274 _all_full_gc_times_ms->sum() / 1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2275 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	2276 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	2277 _all_full_gc_times_ms->sd(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2278 _all_full_gc_times_ms->maximum());
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2279 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2280 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2281 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2282
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2283 void G1CollectorPolicy::print_yg_surv_rate_info() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2284 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2285 _short_lived_surv_rate_group->print_surv_rate_summary();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2286 // add this call for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2287 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2288 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2289
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	2290 void
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	2291 G1CollectorPolicy::update_region_num(bool young) {
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	2292 if (young) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2293 ++_region_num_young;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2294 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2295 ++_region_num_tenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2296 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2297 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2298
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2299 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2300 // for debugging, bit of a hack...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2301 static char*
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2302 region_num_to_mbs(int length) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2303 static char buffer[64];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2304 double bytes = (double) (length * HeapRegion::GrainBytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2305 double mbs = bytes / (double) (1024 * 1024);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2306 sprintf(buffer, "%7.2lfMB", mbs);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2307 return buffer;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2308 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2309 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2310
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2311 size_t G1CollectorPolicy::max_regions(int purpose) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2312 switch (purpose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2313 case GCAllocForSurvived:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2314 return _max_survivor_regions;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2315 case GCAllocForTenured:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2316 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2317 default:
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2318 ShouldNotReachHere();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2319 return REGIONS_UNLIMITED;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2320 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2321 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2322
1991 016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2323 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	2324 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	2325 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	2326 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	2327 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	2328 // 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	2329 // 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	2330 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	2331 } else {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2332 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	2333 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2334 _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	2335 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	2336 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	2337
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2338 // Calculates survivor space parameters.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2339 void G1CollectorPolicy::calculate_survivors_policy()
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2340 {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2341 if (G1FixedSurvivorSpaceSize == 0) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2342 _max_survivor_regions = _young_list_target_length / SurvivorRatio;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2343 } else {
547 1e458753107d 6802413: G1: G1FixedSurvivorSpaceSize should be converted into regions in calculate_survivors_policy() apetrusenko parents: 545 diff changeset	2344 _max_survivor_regions = G1FixedSurvivorSpaceSize / HeapRegion::GrainBytes;
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2345 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2346
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2347 if (G1FixedTenuringThreshold) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2348 _tenuring_threshold = MaxTenuringThreshold;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2349 } else {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2350 _tenuring_threshold = _survivors_age_table.compute_tenuring_threshold(
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2351 HeapRegion::GrainWords * _max_survivor_regions);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2352 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2353 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	2354
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2355 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2356 class HRSortIndexIsOKClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2357 CollectionSetChooser* _chooser;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2358 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2359 HRSortIndexIsOKClosure(CollectionSetChooser* chooser) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2360 _chooser(chooser) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2361
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2362 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2363 if (!r->continuesHumongous()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2364 assert(_chooser->regionProperlyOrdered(r), "Ought to be.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2365 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2366 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2367 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2368 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2369
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2370 bool G1CollectorPolicy_BestRegionsFirst::assertMarkedBytesDataOK() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2371 HRSortIndexIsOKClosure cl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2372 _g1->heap_region_iterate(&cl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2373 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2374 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2375 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2376
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2377 bool
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2378 G1CollectorPolicy::force_initial_mark_if_outside_cycle() {
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2379 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2380 if (!during_cycle) {
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2381 set_initiate_conc_mark_if_possible();
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2382 return true;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2383 } else {
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2384 return false;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2385 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2386 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2387
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2388 void
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2389 G1CollectorPolicy::decide_on_conc_mark_initiation() {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2390 // 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	2391 // initial-mark pause.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2392
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2393 // 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	2394 // 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	2395 // 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	2396 // initial-mark pause).
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2397 assert(!during_initial_mark_pause(), "pre-condition");
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2398
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2399 if (initiate_conc_mark_if_possible()) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2400 // 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	2401 // 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	2402 // concurrent marking cycle. So we might initiate one.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2403
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2404 bool during_cycle = _g1->concurrent_mark()->cmThread()->during_cycle();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2405 if (!during_cycle) {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2406 // 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	2407 // 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	2408 // initiate a new cycle.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2409
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2410 set_during_initial_mark_pause();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2411
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2412 // 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	2413 // we've already acted on it.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2414 clear_initiate_conc_mark_if_possible();
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2415 } else {
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2416 // The concurrent marking thread is still finishing up the
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2417 // 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	2418 // overlap. In particular, the concurrent marking thread might
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2419 // 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	2420 // 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	2421 // 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	2422 // 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	2423 // 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	2424 // periodically yields while clearing the next marking bitmap
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2425 // 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	2426 // 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	2427 // let the concurrent marking thread complete the last one.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2428 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2429 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2430 }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2431
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	2432 void
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2433 G1CollectorPolicy_BestRegionsFirst::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2434 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	2435 G1CollectorPolicy::record_collection_pause_start(start_time_sec, start_used);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2436 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2437
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2438 class NextNonCSElemFinder: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2439 HeapRegion* _res;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2440 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2441 NextNonCSElemFinder(): _res(NULL) {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2442 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2443 if (!r->in_collection_set()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2444 _res = r;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2445 return true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2446 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2447 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2448 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2449 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2450 HeapRegion* res() { return _res; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2451 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2452
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2453 class KnownGarbageClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2454 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2455
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2456 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2457 KnownGarbageClosure(CollectionSetChooser* hrSorted) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2458 _hrSorted(hrSorted)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2459 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2460
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2461 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2462 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2463 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2464 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2465
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2466 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2467 if (r->is_marked()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2468 // We don't include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2469 // 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	2470 // cycle. We also don't include young regions because we must
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2471 // include them in the next collection pause.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2472 if (!r->isHumongous() && !r->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2473 _hrSorted->addMarkedHeapRegion(r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2474 }
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 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2477 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2478 };
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 class ParKnownGarbageHRClosure: public HeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2481 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2482 jint _marked_regions_added;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2483 jint _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2484 jint _cur_chunk_idx;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2485 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	2486 int _worker;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2487 int _invokes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2488
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2489 void get_new_chunk() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2490 _cur_chunk_idx = _hrSorted->getParMarkedHeapRegionChunk(_chunk_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2491 _cur_chunk_end = _cur_chunk_idx + _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2492 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2493 void add_region(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2494 if (_cur_chunk_idx == _cur_chunk_end) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2495 get_new_chunk();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2496 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2497 assert(_cur_chunk_idx < _cur_chunk_end, "postcondition");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2498 _hrSorted->setMarkedHeapRegion(_cur_chunk_idx, r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2499 _marked_regions_added++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2500 _cur_chunk_idx++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2501 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2502
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2503 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2504 ParKnownGarbageHRClosure(CollectionSetChooser* hrSorted,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2505 jint chunk_size,
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 _hrSorted(hrSorted), _chunk_size(chunk_size), _worker(worker),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2508 _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	2509 _invokes(0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2510 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2511
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2512 bool doHeapRegion(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2513 // We only include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2514 // sets when concurrent mark shows that their contained object is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2515 // unreachable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2516 _invokes++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2517
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2518 // Do we have any marking information for this region?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2519 if (r->is_marked()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2520 // We don't include humongous regions in collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2521 // 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	2522 // cycle.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2523 // We also do not include young regions in collection sets
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2524 if (!r->isHumongous() && !r->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2525 add_region(r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2526 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2527 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2528 return false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2529 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2530 jint marked_regions_added() { return _marked_regions_added; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2531 int invokes() { return _invokes; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2532 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2533
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2534 class ParKnownGarbageTask: public AbstractGangTask {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2535 CollectionSetChooser* _hrSorted;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2536 jint _chunk_size;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2537 G1CollectedHeap* _g1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2538 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2539 ParKnownGarbageTask(CollectionSetChooser* hrSorted, jint chunk_size) :
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2540 AbstractGangTask("ParKnownGarbageTask"),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2541 _hrSorted(hrSorted), _chunk_size(chunk_size),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2542 _g1(G1CollectedHeap::heap())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2543 {}
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2544
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2545 void work(int i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2546 ParKnownGarbageHRClosure parKnownGarbageCl(_hrSorted, _chunk_size, i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2547 // Back to zero for the claim value.
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2548 _g1->heap_region_par_iterate_chunked(&parKnownGarbageCl, i,
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2549 HeapRegion::InitialClaimValue);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2550 jint regions_added = parKnownGarbageCl.marked_regions_added();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2551 _hrSorted->incNumMarkedHeapRegions(regions_added);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2552 if (G1PrintParCleanupStats) {
2363 c93aa6caa02f 7022943: G1: improve logging to avoid interleaved numbers brutisso parents: 2188 diff changeset	2553 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	2554 i, parKnownGarbageCl.invokes(), regions_added);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2555 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2556 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2557 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2558
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2559 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2560 G1CollectorPolicy_BestRegionsFirst::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2561 record_concurrent_mark_cleanup_end(size_t freed_bytes,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2562 size_t max_live_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2563 double start;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2564 if (G1PrintParCleanupStats) start = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2565 record_concurrent_mark_cleanup_end_work1(freed_bytes, max_live_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2566
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2567 _collectionSetChooser->clearMarkedHeapRegions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2568 double clear_marked_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2569 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2570 clear_marked_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2571 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	2572 (clear_marked_end - start)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2573 }
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1779 diff changeset	2574 if (G1CollectedHeap::use_parallel_gc_threads()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2575 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	2576 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	2577 const size_t WorkUnit =
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2578 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	2579 MinWorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2580 _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	2581 WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2582 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	2583 (int) WorkUnit);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2584 _g1->workers()->run_task(&parKnownGarbageTask);
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2585
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2586 assert(_g1->check_heap_region_claim_values(HeapRegion::InitialClaimValue),
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 342 diff changeset	2587 "sanity check");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2588 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2589 KnownGarbageClosure knownGarbagecl(_collectionSetChooser);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2590 _g1->heap_region_iterate(&knownGarbagecl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2591 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2592 double known_garbage_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2593 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2594 known_garbage_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2595 gclog_or_tty->print_cr(" compute known garbage: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2596 (known_garbage_end - clear_marked_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2597 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2598 _collectionSetChooser->sortMarkedHeapRegions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2599 double sort_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2600 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2601 sort_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2602 gclog_or_tty->print_cr(" sorting: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2603 (sort_end - known_garbage_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2604 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2605
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2606 record_concurrent_mark_cleanup_end_work2();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2607 double work2_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2608 if (G1PrintParCleanupStats) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2609 work2_end = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2610 gclog_or_tty->print_cr(" work2: %8.3f ms.",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2611 (work2_end - sort_end)*1000.0);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2612 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2613 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2614
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2615 // 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	2616 void G1CollectorPolicy::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2617 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	2618 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	2619 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	2620
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1261 diff changeset	2621 if (G1PrintHeapRegions) {
1388 7666957bc44d 6937142: G1: improvements to debugging output (S-M) tonyp parents: 1359 diff changeset	2622 gclog_or_tty->print_cr("added region to cset "
7666957bc44d 6937142: G1: improvements to debugging output (S-M) tonyp parents: 1359 diff changeset	2623 "%d:["PTR_FORMAT", "PTR_FORMAT"], "
7666957bc44d 6937142: G1: improvements to debugging output (S-M) tonyp parents: 1359 diff changeset	2624 "top "PTR_FORMAT", %s",
7666957bc44d 6937142: G1: improvements to debugging output (S-M) tonyp parents: 1359 diff changeset	2625 hr->hrs_index(), hr->bottom(), hr->end(),
7666957bc44d 6937142: G1: improvements to debugging output (S-M) tonyp parents: 1359 diff changeset	2626 hr->top(), hr->is_young() ? "YOUNG" : "NOT_YOUNG");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2627 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2628
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2629 if (_g1->mark_in_progress())
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2630 _g1->concurrent_mark()->registerCSetRegion(hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2631
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2632 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	2633 hr->set_in_collection_set(true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2634 hr->set_next_in_collection_set(_collection_set);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2635 _collection_set = hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2636 _collection_set_size++;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2637 _collection_set_bytes_used_before += hr->used();
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 470 diff changeset	2638 _g1->register_region_with_in_cset_fast_test(hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2639 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2640
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2641 // 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	2642 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	2643 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	2644
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2645 _inc_cset_head = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2646 _inc_cset_tail = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2647 _inc_cset_size = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2648 _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	2649
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2650 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	2651 _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	2652 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2653
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2654 _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	2655 _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	2656 _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	2657 _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	2658 _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	2659 _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	2660 }
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 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	2663 // 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	2664 // * 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	2665 // evacuation pause,
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2666 // * 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	2667 // 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	2668 // * 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	2669 // 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	2670 // 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	2671 // 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	2672 // 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	2673 // refine thread (RSet sampling).
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2674
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2675 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	2676 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	2677
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2678 _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	2679 _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	2680
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2681 _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	2682
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2683 // 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	2684 // 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	2685 // 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	2686 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2687 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	2688 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	2689
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2690 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2691 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	2692 _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	2693
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2694 // 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	2695 _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	2696
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2697 // 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	2698 // 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	2699 // 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	2700 // rset sampling code
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2701 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	2702 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2703 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2704
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2705 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	2706 // 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	2707 // 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	2708 // 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	2709 // 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	2710
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2711 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	2712 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	2713
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2714 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	2715 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	2716 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	2717
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2718 // 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	2719 // 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	2720 _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	2721 _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	2722
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2723 _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	2724
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2725 // 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	2726 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	2727 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	2728
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2729 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2730 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	2731 _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	2732
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2733 // 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	2734 _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	2735
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2736 // 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	2737 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	2738 #endif // PREDICTIONS_VERBOSE
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
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2741 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	2742 // 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	2743 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	2744
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2745 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	2746 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	2747 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2748
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2749 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	2750 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	2751 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	2752 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	2753
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2754 // 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	2755 // 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	2756 // 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	2757 // 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	2758 // 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	2759 // 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	2760
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2761 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	2762 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	2763
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2764 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	2765 _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	2766
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2767 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	2768 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	2769 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	2770
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2771 _inc_cset_size++;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2772 _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	2773
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2774 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	2775 ++_inc_cset_young_index;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2776 }
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 // 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	2779 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	2780 // 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	2781 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	2782
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2783 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2784 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	2785
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2786 // 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	2787 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	2788 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	2789 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2790 } else {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2791 _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	2792 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2793 _inc_cset_tail = hr;
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 if (G1PrintHeapRegions) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2796 gclog_or_tty->print_cr(" added region to incremental cset (RHS) "
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2797 "%d:["PTR_FORMAT", "PTR_FORMAT"], "
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2798 "top "PTR_FORMAT", young %s",
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2799 hr->hrs_index(), hr->bottom(), hr->end(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2800 hr->top(), (hr->is_young()) ? "YES" : "NO");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2801 }
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
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2804 // 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	2805 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	2806 // 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	2807 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	2808
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2809 // Do the 'common' stuff
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2810 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	2811
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2812 // 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	2813 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	2814 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	2815 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	2816 _inc_cset_tail = hr;
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 _inc_cset_head = hr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2819
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2820 if (G1PrintHeapRegions) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2821 gclog_or_tty->print_cr(" added region to incremental cset (LHS) "
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2822 "%d:["PTR_FORMAT", "PTR_FORMAT"], "
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2823 "top "PTR_FORMAT", young %s",
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2824 hr->hrs_index(), hr->bottom(), hr->end(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2825 hr->top(), (hr->is_young()) ? "YES" : "NO");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2826 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2827 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2828
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2829 #ifndef PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2830 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	2831 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	2832
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2833 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	2834 HeapRegion* csr = list_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2835 while (csr != NULL) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2836 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	2837 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	2838 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	2839 "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	2840 csr->bottom(), csr->end(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2841 csr->top(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2842 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	2843 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	2844 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	2845 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	2846 csr->is_young(),
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2847 csr->is_survivor());
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2848 csr = next;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2849 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2850 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2851 #endif // !PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2852
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	2853 void
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2854 G1CollectorPolicy_BestRegionsFirst::choose_collection_set(
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2855 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	2856 // 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	2857 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	2858
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2859 start_recording_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2860
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2861 guarantee(target_pause_time_ms > 0.0,
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2862 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	2863 target_pause_time_ms));
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2864 guarantee(_collection_set == NULL, "Precondition");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2865
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2866 double base_time_ms = predict_base_elapsed_time_ms(_pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2867 double predicted_pause_time_ms = base_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2868
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2869 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	2870
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2871 // the 10% and 50% values are arbitrary...
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	2872 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	2873 time_remaining_ms = 0.50 * target_pause_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2874 _within_target = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2875 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2876 _within_target = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2877 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2878
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2879 // 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	2880 // For new regions without marking information, we must assume the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2881 // 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	2882 // 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	2883 // 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	2884 // exceed the available evacuation space.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2885 size_t max_live_bytes = _g1->free_regions() * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2886
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2887 size_t expansion_bytes =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2888 _g1->expansion_regions() * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2889
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2890 _collection_set_bytes_used_before = 0;
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2891 _collection_set_size = 0;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2892
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2893 // Adjust for expansion and slop.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2894 max_live_bytes = max_live_bytes + expansion_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2895
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2896 HeapRegion* hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2897 if (in_young_gc_mode()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2898 double young_start_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2899
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2900 if (G1PolicyVerbose > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2901 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	2902 _g1->young_list()->length());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2903 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2904
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2905 _young_cset_length = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2906 _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	2907
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2908 if (_last_young_gc_full)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2909 ++_full_young_pause_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2910 else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2911 ++_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	2912
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2913 // 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	2914 // 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	2915 // [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	2916
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2917 hr = _g1->young_list()->first_survivor_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2918 while (hr != NULL) {
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2919 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	2920 hr->set_young();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2921 hr = hr->get_next_young_region();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2922 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2923
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2924 // 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	2925 // all young now.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2926 _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	2927
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2928 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	2929 _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	2930
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2931 _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	2932 _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	2933 _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	2934 _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	2935
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2936 // 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	2937 // case of complete survival
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2938 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	2939
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2940 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	2941 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	2942
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2943 // 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	2944 // 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	2945 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	2946 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	2947 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	2948 #if PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2949 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	2950 #endif // PREDICTIONS_VERBOSE
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2951
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2952 if (G1PolicyVerbose > 0) {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2953 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	2954 _inc_cset_size);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2955 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	2956 max_live_bytes/K);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2957 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2958
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2959 assert(_inc_cset_size == _g1->young_list()->length(), "Invariant");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2960
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2961 double young_end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2962 _recorded_young_cset_choice_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2963 (young_end_time_sec - young_start_time_sec) * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2964
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2965 // 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	2966 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	2967
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2968 // 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	2969 // _young_cset_length here
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	2970 if (_collection_set_size > 0 && _last_young_gc_full) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2971 // don't bother adding more regions...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2972 goto choose_collection_set_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2973 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2974 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2975
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2976 if (!in_young_gc_mode() \|\| !full_young_gcs()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2977 bool should_continue = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2978 NumberSeq seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2979 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	2980
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2981 do {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2982 hr = _collectionSetChooser->getNextMarkedRegion(time_remaining_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2983 avg_prediction);
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 648 diff changeset	2984 if (hr != NULL) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2985 double predicted_time_ms = predict_region_elapsed_time_ms(hr, false);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2986 time_remaining_ms -= predicted_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2987 predicted_pause_time_ms += predicted_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2988 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	2989 record_non_young_cset_region(hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2990 max_live_bytes -= MIN2(hr->max_live_bytes(), max_live_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2991 if (G1PolicyVerbose > 0) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2992 gclog_or_tty->print_cr(" (" SIZE_FORMAT " KB left in heap.)",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2993 max_live_bytes/K);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2994 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2995 seq.add(predicted_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2996 avg_prediction = seq.avg() + seq.sd();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2997 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2998 should_continue =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	2999 ( hr != NULL) &&
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3000 ( (adaptive_young_list_length()) ? time_remaining_ms > 0.0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3001 : _collection_set_size < _young_list_fixed_length );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3002 } while (should_continue);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3003
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3004 if (!adaptive_young_list_length() &&
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3005 _collection_set_size < _young_list_fixed_length)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3006 _should_revert_to_full_young_gcs = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3007 }
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 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	3010 stop_incremental_cset_building();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	3011
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3012 count_CS_bytes_used();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3013
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3014 end_recording_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3015
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3016 double non_young_end_time_sec = os::elapsedTime();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3017 _recorded_non_young_cset_choice_time_ms =
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3018 (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	3019 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3020
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3021 void G1CollectorPolicy_BestRegionsFirst::record_full_collection_end() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3022 G1CollectorPolicy::record_full_collection_end();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3023 _collectionSetChooser->updateAfterFullCollection();
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3026 void G1CollectorPolicy_BestRegionsFirst::
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3027 expand_if_possible(size_t numRegions) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3028 size_t expansion_bytes = numRegions * HeapRegion::GrainBytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3029 _g1->expand(expansion_bytes);
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::
1707 0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	3033 record_collection_pause_end() {
0ce1569c90e5 6963209: G1: remove the concept of abandoned pauses tonyp parents: 1705 diff changeset	3034 G1CollectorPolicy::record_collection_pause_end();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3035 assert(assertMarkedBytesDataOK(), "Marked regions not OK at pause end.");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3036 }

Mercurial > hg > graal-jvmci-8

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 3285:49a67202bc67