graal-compiler: src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp annotate

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp @ 4787:2ace1c4ee8da

6888336: G1: avoid explicitly marking and pushing objects in survivor spaces Summary: This change simplifies the interaction between GC and concurrent marking. By disabling survivor spaces during the initial-mark pause we don't need to propagate marks of objects we copy during each GC (since we never need to copy an explicitly marked object). Reviewed-by: johnc, brutisso

author	tonyp
date	Tue, 10 Jan 2012 18:58:13 -0500
parents	1cbe7978b021
children	9509c20bba28

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	2 * Copyright (c) 2001, 2012, 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: 1707 diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTORPOLICY_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1707 diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTORPOLICY_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1707 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1707 diff changeset	28 #include "gc_implementation/g1/collectionSetChooser.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1707 diff changeset	29 #include "gc_implementation/g1/g1MMUTracker.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1707 diff changeset	30 #include "memory/collectorPolicy.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1707 diff changeset	31
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	32 // A G1CollectorPolicy makes policy decisions that determine the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	33 // characteristics of the collector. Examples include:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	34 // * choice of collection set.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	35 // * when to collect.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	36
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	37 class HeapRegion;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	38 class CollectionSetChooser;
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 // Yes, this is a bit unpleasant... but it saves replicating the same thing
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	41 // over and over again and introducing subtle problems through small typos and
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	42 // cutting and pasting mistakes. The macros below introduces a number
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	43 // sequnce into the following two classes and the methods that access it.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	44
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	45 #define define_num_seq(name) \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	46 private: \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	47 NumberSeq _all_##name##_times_ms; \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	48 public: \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	49 void record_##name##_time_ms(double ms) { \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	50 _all_##name##_times_ms.add(ms); \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	51 } \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	52 NumberSeq* get_##name##_seq() { \
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	53 return &_all_##name##_times_ms; \
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	56 class MainBodySummary;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	57
549 fe3d7c11b4b7 6700941: G1: allocation spec missing for some G1 classes apetrusenko parents: 545 diff changeset	58 class PauseSummary: public CHeapObj {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	59 define_num_seq(total)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	60 define_num_seq(other)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	61
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	62 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	63 virtual MainBodySummary* main_body_summary() { return NULL; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	64 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	65
549 fe3d7c11b4b7 6700941: G1: allocation spec missing for some G1 classes apetrusenko parents: 545 diff changeset	66 class MainBodySummary: public CHeapObj {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	67 define_num_seq(satb_drain) // optional
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	68 define_num_seq(parallel) // parallel only
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	69 define_num_seq(ext_root_scan)
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	70 define_num_seq(satb_filtering)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	71 define_num_seq(update_rs)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	72 define_num_seq(scan_rs)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	73 define_num_seq(obj_copy)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	74 define_num_seq(termination) // parallel only
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	75 define_num_seq(parallel_other) // parallel only
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	76 define_num_seq(mark_closure)
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	77 define_num_seq(clear_ct)
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	78 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	79
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 628 diff changeset	80 class Summary: public PauseSummary,
96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 628 diff changeset	81 public MainBodySummary {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	82 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	83 virtual MainBodySummary* main_body_summary() { return this; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	84 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	85
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	86 // There are three command line options related to the young gen size:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	87 // NewSize, MaxNewSize and NewRatio (There is also -Xmn, but that is
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	88 // just a short form for NewSize==MaxNewSize). G1 will use its internal
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	89 // heuristics to calculate the actual young gen size, so these options
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	90 // basically only limit the range within which G1 can pick a young gen
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	91 // size. Also, these are general options taking byte sizes. G1 will
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	92 // internally work with a number of regions instead. So, some rounding
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	93 // will occur.
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	94 //
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	95 // If nothing related to the the young gen size is set on the command
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	96 // line we should allow the young gen to be between
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	97 // G1DefaultMinNewGenPercent and G1DefaultMaxNewGenPercent of the
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	98 // heap size. This means that every time the heap size changes the
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	99 // limits for the young gen size will be updated.
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	100 //
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	101 // If only -XX:NewSize is set we should use the specified value as the
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	102 // minimum size for young gen. Still using G1DefaultMaxNewGenPercent
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	103 // of the heap as maximum.
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	104 //
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	105 // If only -XX:MaxNewSize is set we should use the specified value as the
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	106 // maximum size for young gen. Still using G1DefaultMinNewGenPercent
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	107 // of the heap as minimum.
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	108 //
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	109 // If -XX:NewSize and -XX:MaxNewSize are both specified we use these values.
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	110 // No updates when the heap size changes. There is a special case when
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	111 // NewSize==MaxNewSize. This is interpreted as "fixed" and will use a
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	112 // different heuristic for calculating the collection set when we do mixed
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	113 // collection.
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	114 //
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	115 // If only -XX:NewRatio is set we should use the specified ratio of the heap
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	116 // as both min and max. This will be interpreted as "fixed" just like the
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	117 // NewSize==MaxNewSize case above. But we will update the min and max
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	118 // everytime the heap size changes.
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	119 //
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	120 // NewSize and MaxNewSize override NewRatio. So, NewRatio is ignored if it is
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	121 // combined with either NewSize or MaxNewSize. (A warning message is printed.)
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	122 class G1YoungGenSizer : public CHeapObj {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	123 private:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	124 enum SizerKind {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	125 SizerDefaults,
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	126 SizerNewSizeOnly,
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	127 SizerMaxNewSizeOnly,
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	128 SizerMaxAndNewSize,
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	129 SizerNewRatio
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	130 };
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	131 SizerKind _sizer_kind;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	132 size_t _min_desired_young_length;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	133 size_t _max_desired_young_length;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	134 bool _adaptive_size;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	135 size_t calculate_default_min_length(size_t new_number_of_heap_regions);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	136 size_t calculate_default_max_length(size_t new_number_of_heap_regions);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	137
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	138 public:
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	139 G1YoungGenSizer();
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	140 void heap_size_changed(size_t new_number_of_heap_regions);
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	141 size_t min_desired_young_length() {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	142 return _min_desired_young_length;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	143 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	144 size_t max_desired_young_length() {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	145 return _max_desired_young_length;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	146 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	147 bool adaptive_young_list_length() {
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	148 return _adaptive_size;
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	149 }
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	150 };
1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	151
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	152 class G1CollectorPolicy: public CollectorPolicy {
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	153 private:
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	154 // either equal to the number of parallel threads, if ParallelGCThreads
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	155 // has been set, or 1 otherwise
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	156 int _parallel_gc_threads;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	157
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	158 // The number of GC threads currently active.
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	159 uintx _no_of_gc_threads;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	160
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	161 enum SomePrivateConstants {
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 936 diff changeset	162 NumPrevPausesForHeuristics = 10
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	163 };
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 G1MMUTracker* _mmu_tracker;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	166
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	167 void initialize_flags();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	168
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	169 void initialize_all() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	170 initialize_flags();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	171 initialize_size_info();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	172 initialize_perm_generation(PermGen::MarkSweepCompact);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	173 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	174
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	175 CollectionSetChooser* _collectionSetChooser;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	176
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	177 double _cur_collection_start_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	178 size_t _cur_collection_pause_used_at_start_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	179 size_t _cur_collection_pause_used_regions_at_start;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	180 size_t _prev_collection_pause_used_at_end_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	181 double _cur_collection_par_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	182 double _cur_satb_drain_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	183 double _cur_clear_ct_time_ms;
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	184 double _cur_ref_proc_time_ms;
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	185 double _cur_ref_enq_time_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	186
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	187 #ifndef PRODUCT
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	188 // Card Table Count Cache stats
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	189 double _min_clear_cc_time_ms; // min
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	190 double _max_clear_cc_time_ms; // max
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	191 double _cur_clear_cc_time_ms; // clearing time during current pause
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	192 double _cum_clear_cc_time_ms; // cummulative clearing time
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	193 jlong _num_cc_clears; // number of times the card count cache has been cleared
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	194 #endif
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	195
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	196 // These exclude marking times.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	197 TruncatedSeq* _recent_gc_times_ms;
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 TruncatedSeq* _concurrent_mark_remark_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	200 TruncatedSeq* _concurrent_mark_cleanup_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	201
677 96b229c54d1e 6543938: G1: remove the concept of popularity apetrusenko parents: 628 diff changeset	202 Summary* _summary;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	203
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	204 NumberSeq* _all_pause_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	205 NumberSeq* _all_full_gc_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	206 double _stop_world_start;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	207 NumberSeq* _all_stop_world_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	208 NumberSeq* _all_yield_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	209
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	210 int _aux_num;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	211 NumberSeq* _all_aux_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	212 double* _cur_aux_start_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	213 double* _cur_aux_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	214 bool* _cur_aux_times_set;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	215
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	216 double* _par_last_gc_worker_start_times_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	217 double* _par_last_ext_root_scan_times_ms;
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	218 double* _par_last_satb_filtering_times_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	219 double* _par_last_update_rs_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	220 double* _par_last_update_rs_processed_buffers;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	221 double* _par_last_scan_rs_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	222 double* _par_last_obj_copy_times_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	223 double* _par_last_termination_times_ms;
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	224 double* _par_last_termination_attempts;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	225 double* _par_last_gc_worker_end_times_ms;
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 1991 diff changeset	226 double* _par_last_gc_worker_times_ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	227
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	228 // Each workers 'other' time i.e. the elapsed time of the parallel
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	229 // phase of the pause minus the sum of the individual sub-phase
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	230 // times for a given worker thread.
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	231 double* _par_last_gc_worker_other_times_ms;
c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	232
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	233 // indicates whether we are in young or mixed GC mode
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	234 bool _gcs_are_young;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	235
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	236 size_t _young_list_target_length;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	237 size_t _young_list_fixed_length;
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	238 size_t _prev_eden_capacity; // used for logging
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	239
1991 016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	240 // The max number of regions we can extend the eden by while the GC
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	241 // locker is active. This should be >= _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	242 size_t _young_list_max_length;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	243
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	244 bool _last_gc_was_young;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	245
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	246 unsigned _young_pause_num;
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	247 unsigned _mixed_pause_num;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	248
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	249 bool _during_marking;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	250 bool _in_marking_window;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	251 bool _in_marking_window_im;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	252
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	253 SurvRateGroup* _short_lived_surv_rate_group;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	254 SurvRateGroup* _survivor_surv_rate_group;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	255 // add here any more surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	256
1356 56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1111 diff changeset	257 double _gc_overhead_perc;
56507bcd639e 6937160: G1: should observe GCTimeRatio tonyp parents: 1111 diff changeset	258
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	259 double _reserve_factor;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	260 size_t _reserve_regions;
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	261
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	262 bool during_marking() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	263 return _during_marking;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	266 private:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	267 enum PredictionConstants {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	268 TruncatedSeqLength = 10
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	269 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	270
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	271 TruncatedSeq* _alloc_rate_ms_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	272 double _prev_collection_pause_end_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	273
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	274 TruncatedSeq* _pending_card_diff_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	275 TruncatedSeq* _rs_length_diff_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	276 TruncatedSeq* _cost_per_card_ms_seq;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	277 TruncatedSeq* _young_cards_per_entry_ratio_seq;
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	278 TruncatedSeq* _mixed_cards_per_entry_ratio_seq;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	279 TruncatedSeq* _cost_per_entry_ms_seq;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	280 TruncatedSeq* _mixed_cost_per_entry_ms_seq;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	281 TruncatedSeq* _cost_per_byte_ms_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	282 TruncatedSeq* _constant_other_time_ms_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	283 TruncatedSeq* _young_other_cost_per_region_ms_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	284 TruncatedSeq* _non_young_other_cost_per_region_ms_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	285
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	286 TruncatedSeq* _pending_cards_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	287 TruncatedSeq* _rs_lengths_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	288
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	289 TruncatedSeq* _cost_per_byte_ms_during_cm_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	290
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	291 TruncatedSeq* _young_gc_eff_seq;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	292
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	293 G1YoungGenSizer* _young_gen_sizer;
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	294
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	295 size_t _eden_cset_region_length;
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	296 size_t _survivor_cset_region_length;
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	297 size_t _old_cset_region_length;
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	298
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	299 void init_cset_region_lengths(size_t eden_cset_region_length,
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	300 size_t survivor_cset_region_length);
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	301
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	302 size_t eden_cset_region_length() { return _eden_cset_region_length; }
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	303 size_t survivor_cset_region_length() { return _survivor_cset_region_length; }
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	304 size_t old_cset_region_length() { return _old_cset_region_length; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	305
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	306 size_t _free_regions_at_end_of_collection;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	307
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	308 size_t _recorded_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	309 size_t _max_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	310
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	311 double _recorded_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	312 double _recorded_non_young_free_cset_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	313
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	314 double _sigma;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	315 double _expensive_region_limit_ms;
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 size_t _rs_lengths_prediction;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	318
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	319 size_t _known_garbage_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	320 double _known_garbage_ratio;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	321
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	322 double sigma() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	323 return _sigma;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	326 // A function that prevents us putting too much stock in small sample
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	327 // sets. Returns a number between 2.0 and 1.0, depending on the number
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	328 // of samples. 5 or more samples yields one; fewer scales linearly from
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	329 // 2.0 at 1 sample to 1.0 at 5.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	330 double confidence_factor(int samples) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	331 if (samples > 4) return 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	332 else return 1.0 + sigma() * ((double)(5 - samples))/2.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	333 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	334
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	335 double get_new_neg_prediction(TruncatedSeq* seq) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	336 return seq->davg() - sigma() * seq->dsd();
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	339 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	340 bool verify_young_ages(HeapRegion* head, SurvRateGroup *surv_rate_group);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	341 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	342
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 942 diff changeset	343 void adjust_concurrent_refinement(double update_rs_time,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 942 diff changeset	344 double update_rs_processed_buffers,
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 942 diff changeset	345 double goal_ms);
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 942 diff changeset	346
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	347 uintx no_of_gc_threads() { return _no_of_gc_threads; }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	348 void set_no_of_gc_threads(uintx v) { _no_of_gc_threads = v; }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	349
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	350 double _pause_time_target_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	351 double _recorded_young_cset_choice_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	352 double _recorded_non_young_cset_choice_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	353 size_t _pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	354 size_t _max_pending_cards;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	355
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	356 public:
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	357 // Accessors
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	358
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	359 void set_region_eden(HeapRegion* hr, int young_index_in_cset) {
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	360 hr->set_young();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	361 hr->install_surv_rate_group(_short_lived_surv_rate_group);
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	362 hr->set_young_index_in_cset(young_index_in_cset);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	363 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	364
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	365 void set_region_survivor(HeapRegion* hr, int young_index_in_cset) {
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	366 assert(hr->is_young() && hr->is_survivor(), "pre-condition");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	367 hr->install_surv_rate_group(_survivor_surv_rate_group);
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	368 hr->set_young_index_in_cset(young_index_in_cset);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	369 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	370
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	371 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	372 bool verify_young_ages();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	373 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	374
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	375 double get_new_prediction(TruncatedSeq* seq) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	376 return MAX2(seq->davg() + sigma() * seq->dsd(),
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	377 seq->davg() * confidence_factor(seq->num()));
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	378 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	379
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	380 void record_max_rs_lengths(size_t rs_lengths) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	381 _max_rs_lengths = rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	382 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	383
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	384 size_t predict_pending_card_diff() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	385 double prediction = get_new_neg_prediction(_pending_card_diff_seq);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	386 if (prediction < 0.00001) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	387 return 0;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	388 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	389 return (size_t) prediction;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	390 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	391 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	392
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	393 size_t predict_pending_cards() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	394 size_t max_pending_card_num = _g1->max_pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	395 size_t diff = predict_pending_card_diff();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	396 size_t prediction;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	397 if (diff > max_pending_card_num) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	398 prediction = max_pending_card_num;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	399 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	400 prediction = max_pending_card_num - diff;
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	401 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	402
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	403 return prediction;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	404 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	405
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	406 size_t predict_rs_length_diff() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	407 return (size_t) get_new_prediction(_rs_length_diff_seq);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	408 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	409
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	410 double predict_alloc_rate_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	411 return get_new_prediction(_alloc_rate_ms_seq);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	412 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	413
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	414 double predict_cost_per_card_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	415 return get_new_prediction(_cost_per_card_ms_seq);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	416 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	417
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	418 double predict_rs_update_time_ms(size_t pending_cards) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	419 return (double) pending_cards * predict_cost_per_card_ms();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	420 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	421
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	422 double predict_young_cards_per_entry_ratio() {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	423 return get_new_prediction(_young_cards_per_entry_ratio_seq);
342 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
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	426 double predict_mixed_cards_per_entry_ratio() {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	427 if (_mixed_cards_per_entry_ratio_seq->num() < 2) {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	428 return predict_young_cards_per_entry_ratio();
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	429 } else {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	430 return get_new_prediction(_mixed_cards_per_entry_ratio_seq);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	431 }
342 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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	434 size_t predict_young_card_num(size_t rs_length) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	435 return (size_t) ((double) rs_length *
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	436 predict_young_cards_per_entry_ratio());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	437 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	438
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	439 size_t predict_non_young_card_num(size_t rs_length) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	440 return (size_t) ((double) rs_length *
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	441 predict_mixed_cards_per_entry_ratio());
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	442 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	443
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	444 double predict_rs_scan_time_ms(size_t card_num) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	445 if (gcs_are_young()) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	446 return (double) card_num * get_new_prediction(_cost_per_entry_ms_seq);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	447 } else {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	448 return predict_mixed_rs_scan_time_ms(card_num);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	449 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	450 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	451
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	452 double predict_mixed_rs_scan_time_ms(size_t card_num) {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	453 if (_mixed_cost_per_entry_ms_seq->num() < 3) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	454 return (double) card_num * get_new_prediction(_cost_per_entry_ms_seq);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	455 } else {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	456 return (double) (card_num *
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	457 get_new_prediction(_mixed_cost_per_entry_ms_seq));
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	458 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	459 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	460
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	461 double predict_object_copy_time_ms_during_cm(size_t bytes_to_copy) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	462 if (_cost_per_byte_ms_during_cm_seq->num() < 3) {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	463 return (1.1 * (double) bytes_to_copy) *
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	464 get_new_prediction(_cost_per_byte_ms_seq);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	465 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	466 return (double) bytes_to_copy *
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	467 get_new_prediction(_cost_per_byte_ms_during_cm_seq);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	468 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	469 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	470
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	471 double predict_object_copy_time_ms(size_t bytes_to_copy) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	472 if (_in_marking_window && !_in_marking_window_im) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	473 return predict_object_copy_time_ms_during_cm(bytes_to_copy);
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	474 } else {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	475 return (double) bytes_to_copy *
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	476 get_new_prediction(_cost_per_byte_ms_seq);
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	477 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	478 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	479
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	480 double predict_constant_other_time_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	481 return get_new_prediction(_constant_other_time_ms_seq);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	482 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	483
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	484 double predict_young_other_time_ms(size_t young_num) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	485 return (double) young_num *
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	486 get_new_prediction(_young_other_cost_per_region_ms_seq);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	487 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	488
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	489 double predict_non_young_other_time_ms(size_t non_young_num) {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	490 return (double) non_young_num *
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	491 get_new_prediction(_non_young_other_cost_per_region_ms_seq);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	492 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	493
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	494 void check_if_region_is_too_expensive(double predicted_time_ms);
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 double predict_young_collection_elapsed_time_ms(size_t adjustment);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	497 double predict_base_elapsed_time_ms(size_t pending_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	498 double predict_base_elapsed_time_ms(size_t pending_cards,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	499 size_t scanned_cards);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	500 size_t predict_bytes_to_copy(HeapRegion* hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	501 double predict_region_elapsed_time_ms(HeapRegion* hr, bool young);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	502
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	503 void set_recorded_rs_lengths(size_t rs_lengths);
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	504
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	505 size_t cset_region_length() { return young_cset_region_length() +
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	506 old_cset_region_length(); }
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	507 size_t young_cset_region_length() { return eden_cset_region_length() +
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	508 survivor_cset_region_length(); }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	509
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	510 void record_young_free_cset_time_ms(double time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	511 _recorded_young_free_cset_time_ms = time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	512 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	513
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	514 void record_non_young_free_cset_time_ms(double time_ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	515 _recorded_non_young_free_cset_time_ms = time_ms;
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 double predict_young_gc_eff() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	519 return get_new_neg_prediction(_young_gc_eff_seq);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	520 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	521
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	522 double predict_survivor_regions_evac_time();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	523
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	524 void cset_regions_freed() {
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	525 bool propagate = _last_gc_was_young && !_in_marking_window;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	526 _short_lived_surv_rate_group->all_surviving_words_recorded(propagate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	527 _survivor_surv_rate_group->all_surviving_words_recorded(propagate);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	528 // also call it on any more surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	529 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	530
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	531 void set_known_garbage_bytes(size_t known_garbage_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	532 _known_garbage_bytes = known_garbage_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	533 size_t heap_bytes = _g1->capacity();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	534 _known_garbage_ratio = (double) _known_garbage_bytes / (double) heap_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	535 }
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 void decrease_known_garbage_bytes(size_t known_garbage_bytes) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	538 guarantee( _known_garbage_bytes >= known_garbage_bytes, "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	539
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	540 _known_garbage_bytes -= known_garbage_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	541 size_t heap_bytes = _g1->capacity();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	542 _known_garbage_ratio = (double) _known_garbage_bytes / (double) heap_bytes;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	543 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	544
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	545 G1MMUTracker* mmu_tracker() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	546 return _mmu_tracker;
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
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	549 double max_pause_time_ms() {
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	550 return _mmu_tracker->max_gc_time() * 1000.0;
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	551 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	552
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	553 double predict_remark_time_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	554 return get_new_prediction(_concurrent_mark_remark_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	555 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	556
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	557 double predict_cleanup_time_ms() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	558 return get_new_prediction(_concurrent_mark_cleanup_times_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	559 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	560
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	561 // Returns an estimate of the survival rate of the region at yg-age
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	562 // "yg_age".
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	563 double predict_yg_surv_rate(int age, SurvRateGroup* surv_rate_group) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	564 TruncatedSeq* seq = surv_rate_group->get_seq(age);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	565 if (seq->num() == 0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	566 gclog_or_tty->print("BARF! age is %d", age);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	567 guarantee( seq->num() > 0, "invariant" );
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	568 double pred = get_new_prediction(seq);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	569 if (pred > 1.0)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	570 pred = 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	571 return pred;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	572 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	573
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	574 double predict_yg_surv_rate(int age) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	575 return predict_yg_surv_rate(age, _short_lived_surv_rate_group);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	576 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	577
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	578 double accum_yg_surv_rate_pred(int age) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	579 return _short_lived_surv_rate_group->accum_surv_rate_pred(age);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	580 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	581
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	582 private:
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	583 void print_stats(int level, const char* str, double value);
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	584 void print_stats(int level, const char* str, int value);
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	585
2430 5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 1991 diff changeset	586 void print_par_stats(int level, const char* str, double* data);
5c0b591e1074 6948149: G1: Imbalance in termination times brutisso parents: 1991 diff changeset	587 void print_par_sizes(int level, const char* str, double* data);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	588
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	589 void check_other_times(int level,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	590 NumberSeq* other_times_ms,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	591 NumberSeq* calc_other_times_ms) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	592
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	593 void print_summary (PauseSummary* stats) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	594
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	595 void print_summary (int level, const char* str, NumberSeq* seq) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	596 void print_summary_sd (int level, const char* str, NumberSeq* seq) const;
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 double avg_value (double* data);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	599 double max_value (double* data);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	600 double sum_of_values (double* data);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	601 double max_sum (double* data1, double* data2);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	602
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	603 double _last_pause_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	604
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	605 size_t _bytes_in_collection_set_before_gc;
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	606 size_t _bytes_copied_during_gc;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	607
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	608 // Used to count used bytes in CS.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	609 friend class CountCSClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	610
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	611 // Statistics kept per GC stoppage, pause or full.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	612 TruncatedSeq* _recent_prev_end_times_for_all_gcs_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	613
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	614 // Add a new GC of the given duration and end time to the record.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	615 void update_recent_gc_times(double end_time_sec, double elapsed_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	616
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	617 // The head of the list (via "next_in_collection_set()") representing the
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	618 // current collection set. Set from the incrementally built collection
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	619 // set at the start of the pause.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	620 HeapRegion* _collection_set;
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	621
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	622 // The number of bytes in the collection set before the pause. Set from
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	623 // the incrementally built collection set at the start of an evacuation
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	624 // pause.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	625 size_t _collection_set_bytes_used_before;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	626
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	627 // The associated information that is maintained while the incremental
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	628 // collection set is being built with young regions. Used to populate
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	629 // the recorded info for the evacuation pause.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	630
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	631 enum CSetBuildType {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	632 Active, // We are actively building the collection set
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	633 Inactive // We are not actively building the collection set
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	634 };
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	635
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	636 CSetBuildType _inc_cset_build_state;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	637
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	638 // The head of the incrementally built collection set.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	639 HeapRegion* _inc_cset_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	640
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	641 // The tail of the incrementally built collection set.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	642 HeapRegion* _inc_cset_tail;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	643
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	644 // The number of bytes in the incrementally built collection set.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	645 // Used to set _collection_set_bytes_used_before at the start of
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	646 // an evacuation pause.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	647 size_t _inc_cset_bytes_used_before;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	648
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	649 // Used to record the highest end of heap region in collection set
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	650 HeapWord* _inc_cset_max_finger;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	651
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	652 // The RSet lengths recorded for regions in the CSet. It is updated
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	653 // by the thread that adds a new region to the CSet. We assume that
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	654 // only one thread can be allocating a new CSet region (currently,
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	655 // it does so after taking the Heap_lock) hence no need to
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	656 // synchronize updates to this field.
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	657 size_t _inc_cset_recorded_rs_lengths;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	658
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	659 // A concurrent refinement thread periodcially samples the young
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	660 // region RSets and needs to update _inc_cset_recorded_rs_lengths as
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	661 // the RSets grow. Instead of having to syncronize updates to that
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	662 // field we accumulate them in this field and add it to
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	663 // _inc_cset_recorded_rs_lengths_diffs at the start of a GC.
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	664 ssize_t _inc_cset_recorded_rs_lengths_diffs;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	665
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	666 // The predicted elapsed time it will take to collect the regions in
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	667 // the CSet. This is updated by the thread that adds a new region to
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	668 // the CSet. See the comment for _inc_cset_recorded_rs_lengths about
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	669 // MT-safety assumptions.
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	670 double _inc_cset_predicted_elapsed_time_ms;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	671
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	672 // See the comment for _inc_cset_recorded_rs_lengths_diffs.
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	673 double _inc_cset_predicted_elapsed_time_ms_diffs;
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	674
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	675 // Stash a pointer to the g1 heap.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	676 G1CollectedHeap* _g1;
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 // The ratio of gc time to elapsed time, computed over recent pauses.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	679 double _recent_avg_pause_time_ratio;
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 double recent_avg_pause_time_ratio() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	682 return _recent_avg_pause_time_ratio;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	683 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	684
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	685 // At the end of a pause we check the heap occupancy and we decide
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	686 // whether we will start a marking cycle during the next pause. If
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	687 // we decide that we want to do that, we will set this parameter to
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	688 // true. So, this parameter will stay true between the end of a
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	689 // pause and the beginning of a subsequent pause (not necessarily
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	690 // the next one, see the comments on the next field) when we decide
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	691 // that we will indeed start a marking cycle and do the initial-mark
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	692 // work.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	693 volatile bool _initiate_conc_mark_if_possible;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	694
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	695 // If initiate_conc_mark_if_possible() is set at the beginning of a
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	696 // pause, it is a suggestion that the pause should start a marking
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	697 // cycle by doing the initial-mark work. However, it is possible
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	698 // that the concurrent marking thread is still finishing up the
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	699 // previous marking cycle (e.g., clearing the next marking
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	700 // bitmap). If that is the case we cannot start a new cycle and
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	701 // we'll have to wait for the concurrent marking thread to finish
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	702 // what it is doing. In this case we will postpone the marking cycle
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	703 // initiation decision for the next pause. When we eventually decide
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	704 // to start a cycle, we will set _during_initial_mark_pause which
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	705 // will stay true until the end of the initial-mark pause and it's
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	706 // the condition that indicates that a pause is doing the
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	707 // initial-mark work.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	708 volatile bool _during_initial_mark_pause;
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	709
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	710 bool _should_revert_to_young_gcs;
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	711 bool _last_young_gc;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	712
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	713 // This set of variables tracks the collector efficiency, in order to
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	714 // determine whether we should initiate a new marking.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	715 double _cur_mark_stop_world_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	716 double _mark_remark_start_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	717 double _mark_cleanup_start_sec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	718 double _mark_closure_time_ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	719
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	720 // Update the young list target length either by setting it to the
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	721 // desired fixed value or by calculating it using G1's pause
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	722 // prediction model. If no rs_lengths parameter is passed, predict
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	723 // the RS lengths using the prediction model, otherwise use the
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	724 // given rs_lengths as the prediction.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	725 void update_young_list_target_length(size_t rs_lengths = (size_t) -1);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	726
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	727 // Calculate and return the minimum desired young list target
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	728 // length. This is the minimum desired young list length according
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	729 // to the user's inputs.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	730 size_t calculate_young_list_desired_min_length(size_t base_min_length);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	731
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	732 // Calculate and return the maximum desired young list target
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	733 // length. This is the maximum desired young list length according
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	734 // to the user's inputs.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	735 size_t calculate_young_list_desired_max_length();
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	736
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	737 // Calculate and return the maximum young list target length that
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	738 // can fit into the pause time goal. The parameters are: rs_lengths
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	739 // represent the prediction of how large the young RSet lengths will
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	740 // be, base_min_length is the alreay existing number of regions in
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	741 // the young list, min_length and max_length are the desired min and
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	742 // max young list length according to the user's inputs.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	743 size_t calculate_young_list_target_length(size_t rs_lengths,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	744 size_t base_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	745 size_t desired_min_length,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	746 size_t desired_max_length);
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	747
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	748 // Check whether a given young length (young_length) fits into the
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	749 // given target pause time and whether the prediction for the amount
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	750 // of objects to be copied for the given length will fit into the
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	751 // given free space (expressed by base_free_regions). It is used by
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	752 // calculate_young_list_target_length().
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	753 bool predict_will_fit(size_t young_length, double base_time_ms,
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	754 size_t base_free_regions, double target_pause_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	755
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	756 // Count the number of bytes used in the CS.
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	757 void count_CS_bytes_used();
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	758
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	759 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	760
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	761 G1CollectorPolicy();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	762
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	763 virtual G1CollectorPolicy* as_g1_policy() { return this; }
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 virtual CollectorPolicy::Name kind() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	766 return CollectorPolicy::G1CollectorPolicyKind;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	767 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	768
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	769 // Check the current value of the young list RSet lengths and
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	770 // compare it against the last prediction. If the current value is
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	771 // higher, recalculate the young list target length prediction.
4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	772 void revise_young_list_target_length_if_necessary();
342 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 size_t bytes_in_collection_set() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	775 return _bytes_in_collection_set_before_gc;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	776 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	777
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	778 unsigned calc_gc_alloc_time_stamp() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	779 return _all_pause_times_ms->num() + 1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	780 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	781
3920 af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	782 // This should be called after the heap is resized.
af2ab04e0038 6929868: G1: introduce min / max young gen size bounds brutisso parents: 3919 diff changeset	783 void record_new_heap_size(size_t new_number_of_regions);
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	784
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	785 void init();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	786
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	787 // Create jstat counters for the policy.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	788 virtual void initialize_gc_policy_counters();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	789
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	790 virtual HeapWord* mem_allocate_work(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	791 bool is_tlab,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	792 bool* gc_overhead_limit_was_exceeded);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	793
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	794 // This method controls how a collector handles one or more
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	795 // of its generations being fully allocated.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	796 virtual HeapWord* satisfy_failed_allocation(size_t size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	797 bool is_tlab);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	798
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	799 BarrierSet::Name barrier_set_name() { return BarrierSet::G1SATBCTLogging; }
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 GenRemSet::Name rem_set_name() { return GenRemSet::CardTable; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	802
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	803 // Update the heuristic info to record a collection pause of the given
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	804 // start time, where the given number of bytes were used at the start.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	805 // This may involve changing the desired size of a collection set.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	806
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	807 void record_stop_world_start();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	808
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	809 void record_collection_pause_start(double start_time_sec, size_t start_used);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	810
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	811 // Must currently be called while the world is stopped.
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	812 void record_concurrent_mark_init_end(double
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	813 mark_init_elapsed_time_ms);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	814
4097 dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4096 diff changeset	815 void record_mark_closure_time(double mark_closure_time_ms) {
dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4096 diff changeset	816 _mark_closure_time_ms = mark_closure_time_ms;
dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4096 diff changeset	817 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	818
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	819 void record_concurrent_mark_remark_start();
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	820 void record_concurrent_mark_remark_end();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	821
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	822 void record_concurrent_mark_cleanup_start();
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	823 void record_concurrent_mark_cleanup_end(int no_of_gc_threads);
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	824 void record_concurrent_mark_cleanup_completed();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	825
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	826 void record_concurrent_pause();
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	827 void record_concurrent_pause_end();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	828
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	829 void record_collection_pause_end(int no_of_gc_threads);
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	830 void print_heap_transition();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	831
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	832 // Record the fact that a full collection occurred.
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	833 void record_full_collection_start();
074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	834 void record_full_collection_end();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	835
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	836 void record_gc_worker_start_time(int worker_i, double ms) {
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	837 _par_last_gc_worker_start_times_ms[worker_i] = ms;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	838 }
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	839
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	840 void record_ext_root_scan_time(int worker_i, double ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	841 _par_last_ext_root_scan_times_ms[worker_i] = ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	842 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	843
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	844 void record_satb_filtering_time(int worker_i, double ms) {
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	845 _par_last_satb_filtering_times_ms[worker_i] = ms;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	846 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	847
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	848 void record_satb_drain_time(double ms) {
4023 c6a6e936dc68 7096030: G1: PrintGCDetails enhancements johnc parents: 4013 diff changeset	849 assert(_g1->mark_in_progress(), "shouldn't be here otherwise");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	850 _cur_satb_drain_time_ms = ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	851 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	852
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	853 void record_update_rs_time(int thread, double ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	854 _par_last_update_rs_times_ms[thread] = ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	855 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	856
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	857 void record_update_rs_processed_buffers (int thread,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	858 double processed_buffers) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	859 _par_last_update_rs_processed_buffers[thread] = processed_buffers;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	862 void record_scan_rs_time(int thread, double ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	863 _par_last_scan_rs_times_ms[thread] = ms;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	866 void reset_obj_copy_time(int thread) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	867 _par_last_obj_copy_times_ms[thread] = 0.0;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	870 void reset_obj_copy_time() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	871 reset_obj_copy_time(0);
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	874 void record_obj_copy_time(int thread, double ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	875 _par_last_obj_copy_times_ms[thread] += ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	876 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	877
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	878 void record_termination(int thread, double ms, size_t attempts) {
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	879 _par_last_termination_times_ms[thread] = ms;
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	880 _par_last_termination_attempts[thread] = (double) attempts;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	881 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	882
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	883 void record_gc_worker_end_time(int worker_i, double ms) {
215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	884 _par_last_gc_worker_end_times_ms[worker_i] = ms;
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
595 3698e8f47799 6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) tonyp parents: 549 diff changeset	887 void record_pause_time_ms(double ms) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	888 _last_pause_time_ms = ms;
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	891 void record_clear_ct_time(double ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	892 _cur_clear_ct_time_ms = ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	893 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	894
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	895 void record_par_time(double ms) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	896 _cur_collection_par_time_ms = ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	897 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	898
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	899 void record_aux_start_time(int i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	900 guarantee(i < _aux_num, "should be within range");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	901 _cur_aux_start_times_ms[i] = os::elapsedTime() * 1000.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	902 }
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 void record_aux_end_time(int i) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	905 guarantee(i < _aux_num, "should be within range");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	906 double ms = os::elapsedTime() * 1000.0 - _cur_aux_start_times_ms[i];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	907 _cur_aux_times_set[i] = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	908 _cur_aux_times_ms[i] += ms;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	909 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	910
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	911 void record_ref_proc_time(double ms) {
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	912 _cur_ref_proc_time_ms = ms;
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	913 }
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	914
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	915 void record_ref_enq_time(double ms) {
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	916 _cur_ref_enq_time_ms = ms;
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	917 }
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3920 diff changeset	918
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	919 #ifndef PRODUCT
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	920 void record_cc_clear_time(double ms) {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	921 if (_min_clear_cc_time_ms < 0.0 \|\| ms <= _min_clear_cc_time_ms)
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	922 _min_clear_cc_time_ms = ms;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	923 if (_max_clear_cc_time_ms < 0.0 \|\| ms >= _max_clear_cc_time_ms)
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	924 _max_clear_cc_time_ms = ms;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	925 _cur_clear_cc_time_ms = ms;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	926 _cum_clear_cc_time_ms += ms;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	927 _num_cc_clears++;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	928 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	929 #endif
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 838 diff changeset	930
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	931 // Record how much space we copied during a GC. This is typically
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	932 // called when a GC alloc region is being retired.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	933 void record_bytes_copied_during_gc(size_t bytes) {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	934 _bytes_copied_during_gc += bytes;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	935 }
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	936
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	937 // The amount of space we copied during a GC.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	938 size_t bytes_copied_during_gc() {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	939 return _bytes_copied_during_gc;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	940 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	941
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	942 // Choose a new collection set. Marks the chosen regions as being
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	943 // "in_collection_set", and links them together. The head and number of
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	944 // the collection set are available via access methods.
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	945 void choose_collection_set(double target_pause_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	946
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	947 // The head of the list (via "next_in_collection_set()") representing the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	948 // current collection set.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	949 HeapRegion* collection_set() { return _collection_set; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	950
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	951 void clear_collection_set() { _collection_set = NULL; }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	952
4090 a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	953 // Add old region "hr" to the CSet.
a88de71c4e3a 7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class tonyp parents: 4023 diff changeset	954 void add_old_region_to_cset(HeapRegion* hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	955
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	956 // Incremental CSet Support
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	957
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	958 // The head of the incrementally built collection set.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	959 HeapRegion* inc_cset_head() { return _inc_cset_head; }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	960
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	961 // The tail of the incrementally built collection set.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	962 HeapRegion* inc_set_tail() { return _inc_cset_tail; }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	963
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	964 // Initialize incremental collection set info.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	965 void start_incremental_cset_building();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	966
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	967 // Perform any final calculations on the incremental CSet fields
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	968 // before we can use them.
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	969 void finalize_incremental_cset_building();
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	970
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	971 void clear_incremental_cset() {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	972 _inc_cset_head = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	973 _inc_cset_tail = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	974 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	975
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	976 // Stop adding regions to the incremental collection set
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	977 void stop_incremental_cset_building() { _inc_cset_build_state = Inactive; }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	978
4727 67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	979 // Add information about hr to the aggregated information for the
67fdcb391461 7119027: G1: use atomics to update RS length / predict time of inc CSet tonyp parents: 4710 diff changeset	980 // incrementally built collection set.
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	981 void 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: 1359 diff changeset	982
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	983 // Update information about hr in the aggregated information for
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	984 // the incrementally built collection set.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	985 void 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: 1359 diff changeset	986
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	987 private:
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	988 // Update the incremental cset information when adding a region
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	989 // (should not be called directly).
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	990 void 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: 1359 diff changeset	991
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	992 public:
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	993 // Add hr to the LHS of the incremental collection set.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	994 void 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: 1359 diff changeset	995
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	996 // Add hr to the RHS of the incremental collection set.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	997 void 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: 1359 diff changeset	998
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	999 #ifndef PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	1000 void 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: 1359 diff changeset	1001 #endif // !PRODUCT
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1359 diff changeset	1002
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1003 bool initiate_conc_mark_if_possible() { return _initiate_conc_mark_if_possible; }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1004 void set_initiate_conc_mark_if_possible() { _initiate_conc_mark_if_possible = true; }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1005 void clear_initiate_conc_mark_if_possible() { _initiate_conc_mark_if_possible = false; }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1006
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1007 bool during_initial_mark_pause() { return _during_initial_mark_pause; }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1008 void set_during_initial_mark_pause() { _during_initial_mark_pause = true; }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1009 void clear_during_initial_mark_pause(){ _during_initial_mark_pause = false; }
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1010
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1011 // This sets the initiate_conc_mark_if_possible() flag to start a
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1012 // new cycle, as long as we are not already in one. It's best if it
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1013 // is called during a safepoint when the test whether a cycle is in
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1014 // progress or not is stable.
3914 20213c8a3c40 7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions tonyp parents: 3868 diff changeset	1015 bool force_initial_mark_if_outside_cycle(GCCause::Cause gc_cause);
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	1016
1359 23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1017 // This is called at the very beginning of an evacuation pause (it
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1018 // has to be the first thing that the pause does). If
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1019 // initiate_conc_mark_if_possible() is true, and the concurrent
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1020 // marking thread has completed its work during the previous cycle,
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1021 // it will set during_initial_mark_pause() to so that the pause does
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1022 // the initial-mark work and start a marking cycle.
23b1b27ac76c 6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") tonyp parents: 1356 diff changeset	1023 void decide_on_conc_mark_initiation();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1024
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1025 // If an expansion would be appropriate, because recent GC overhead had
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1026 // exceeded the desired limit, return an amount to expand by.
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	1027 size_t expansion_amount();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1028
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1029 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1030 // Check any appropriate marked bytes info, asserting false if
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1031 // something's wrong, else returning "true".
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	1032 bool assertMarkedBytesDataOK();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1033 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1034
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1035 // Print tracing information.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1036 void print_tracing_info() const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1037
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1038 // Print stats on young survival ratio
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1039 void print_yg_surv_rate_info() const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1040
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1041 void finished_recalculating_age_indexes(bool is_survivors) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1042 if (is_survivors) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1043 _survivor_surv_rate_group->finished_recalculating_age_indexes();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1044 } else {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1045 _short_lived_surv_rate_group->finished_recalculating_age_indexes();
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1046 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1047 // do that for any other surv rate groups
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
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	1050 bool is_young_list_full() {
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	1051 size_t young_list_length = _g1->young_list()->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	1052 size_t young_list_target_length = _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	1053 return young_list_length >= 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	1054 }
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1055
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1056 bool can_expand_young_list() {
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1057 size_t young_list_length = _g1->young_list()->length();
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1058 size_t young_list_max_length = _young_list_max_length;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1059 return young_list_length < young_list_max_length;
016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1060 }
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	1061
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3979 diff changeset	1062 size_t young_list_max_length() {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3979 diff changeset	1063 return _young_list_max_length;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3979 diff changeset	1064 }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3979 diff changeset	1065
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	1066 bool gcs_are_young() {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	1067 return _gcs_are_young;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1068 }
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	1069 void set_gcs_are_young(bool gcs_are_young) {
41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 4097 diff changeset	1070 _gcs_are_young = gcs_are_young;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1071 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1072
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1073 bool adaptive_young_list_length() {
4729 1cbe7978b021 7113021: G1: automatically enable young gen size auto-tuning when -Xms==-Xmx brutisso parents: 4727 diff changeset	1074 return _young_gen_sizer->adaptive_young_list_length();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1075 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1076
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1077 inline double get_gc_eff_factor() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1078 double ratio = _known_garbage_ratio;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1079
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1080 double square = ratio * ratio;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1081 // square = square * square;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1082 double ret = square * 9.0 + 1.0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1083 #if 0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1084 gclog_or_tty->print_cr("ratio = %1.2lf, ret = %1.2lf", ratio, ret);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1085 #endif // 0
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1086 guarantee(0.0 <= ret && ret < 10.0, "invariant!");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1087 return ret;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1088 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1089
4013 074f0252cc13 7088680: G1: Cleanup in the G1CollectorPolicy class tonyp parents: 3980 diff changeset	1090 private:
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1091 //
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1092 // Survivor regions policy.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1093 //
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1094
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1095 // Current tenuring threshold, set to 0 if the collector reaches the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1096 // maximum amount of suvivors regions.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1097 int _tenuring_threshold;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1098
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1099 // The limit on the number of regions allocated for survivors.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1100 size_t _max_survivor_regions;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1101
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1102 // For reporting purposes.
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1103 size_t _eden_bytes_before_gc;
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1104 size_t _survivor_bytes_before_gc;
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1105 size_t _capacity_before_gc;
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 2430 diff changeset	1106
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1107 // The amount of survor regions after a collection.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1108 size_t _recorded_survivor_regions;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1109 // List of survivor regions.
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1110 HeapRegion* _recorded_survivor_head;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1111 HeapRegion* _recorded_survivor_tail;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1112
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1113 ageTable _survivors_age_table;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1114
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1115 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1116
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1117 inline GCAllocPurpose
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1118 evacuation_destination(HeapRegion* src_region, int age, size_t word_sz) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1119 if (age < _tenuring_threshold && src_region->is_young()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1120 return GCAllocForSurvived;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1121 } else {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1122 return GCAllocForTenured;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1123 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1124 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1125
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1126 inline bool track_object_age(GCAllocPurpose purpose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1127 return purpose == GCAllocForSurvived;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1128 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1129
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1130 static const size_t REGIONS_UNLIMITED = ~(size_t)0;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1131
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1132 size_t max_regions(int purpose);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1133
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1134 // The limit on regions for a particular purpose is reached.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1135 void note_alloc_region_limit_reached(int purpose) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1136 if (purpose == GCAllocForSurvived) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1137 _tenuring_threshold = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1138 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1139 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1140
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1141 void note_start_adding_survivor_regions() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1142 _survivor_surv_rate_group->start_adding_regions();
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 void note_stop_adding_survivor_regions() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1146 _survivor_surv_rate_group->stop_adding_regions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1147 }
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1148
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	1149 void tenure_all_objects() {
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	1150 _max_survivor_regions = 0;
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	1151 _tenuring_threshold = 0;
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	1152 }
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4729 diff changeset	1153
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1154 void record_survivor_regions(size_t regions,
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1155 HeapRegion* head,
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1156 HeapRegion* tail) {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1157 _recorded_survivor_regions = regions;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1158 _recorded_survivor_head = head;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1159 _recorded_survivor_tail = tail;
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1160 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1161
838 0316eac49d5a 6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set tonyp parents: 794 diff changeset	1162 size_t recorded_survivor_regions() {
0316eac49d5a 6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set tonyp parents: 794 diff changeset	1163 return _recorded_survivor_regions;
0316eac49d5a 6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set tonyp parents: 794 diff changeset	1164 }
0316eac49d5a 6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set tonyp parents: 794 diff changeset	1165
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1166 void record_thread_age_table(ageTable* age_table)
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1167 {
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1168 _survivors_age_table.merge_par(age_table);
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1169 }
58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1170
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1171 void update_max_gc_locker_expansion();
1991 016a3628c885 6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen tonyp parents: 1973 diff changeset	1172
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1173 // Calculates survivor space parameters.
3919 4f41766176cf 7084509: G1: fix inconsistencies and mistakes in the young list target length calculations tonyp parents: 3914 diff changeset	1174 void update_survivors_policy();
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 342 diff changeset	1175
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1176 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1177
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1178 // This should move to some place more general...
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1179
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1180 // If we have "n" measurements, and we've kept track of their "sum" and the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1181 // "sum_of_squares" of the measurements, this returns the variance of the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1182 // sequence.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1183 inline double variance(int n, double sum_of_squares, double sum) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1184 double n_d = (double)n;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1185 double avg = sum/n_d;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1186 return (sum_of_squares - 2.0 * avg * sum + n_d * avg * avg) / n_d;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1187 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1188
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1707 diff changeset	1189 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTORPOLICY_HPP

Mercurial > hg > graal-compiler

annotate src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp @ 4787:2ace1c4ee8da