truffle: src/share/vm/gc_implementation/g1/concurrentG1Refine.hpp annotate

annotate src/share/vm/gc_implementation/g1/concurrentG1Refine.hpp @ 6842:b9a9ed0f8eeb

7197424: update copyright year to match last edit in jdk8 hotspot repository Summary: Update copyright year to 2012 for relevant files Reviewed-by: dholmes, coleenp

author	mikael
date	Tue, 09 Oct 2012 10:09:34 -0700
parents	d2a62e0f25eb
children	194f52aa2f23

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
6842 b9a9ed0f8eeb 7197424: update copyright year to match last edit in jdk8 hotspot repository mikael parents: 6197 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: 1282 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1282 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: 1282 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: 1705 diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINE_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINE_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	28 #include "memory/allocation.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	29 #include "memory/cardTableModRefBS.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	30 #include "runtime/thread.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	31 #include "utilities/globalDefinitions.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	32
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	33 // Forward decl
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	34 class ConcurrentG1RefineThread;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	35 class G1RemSet;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	36
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 3258 diff changeset	37 class ConcurrentG1Refine: public CHeapObj<mtGC> {
794 315a5d70b295 6484957: G1: parallel concurrent refinement iveresov parents: 579 diff changeset	38 ConcurrentG1RefineThread** _threads;
315a5d70b295 6484957: G1: parallel concurrent refinement iveresov parents: 579 diff changeset	39 int _n_threads;
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	40 int _n_worker_threads;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	41 /*
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	42 * The value of the update buffer queue length falls into one of 3 zones:
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	43 * green, yellow, red. If the value is in [0, green) nothing is
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	44 * done, the buffers are left unprocessed to enable the caching effect of the
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	45 * dirtied cards. In the yellow zone [green, yellow) the concurrent refinement
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	46 * threads are gradually activated. In [yellow, red) all threads are
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	47 * running. If the length becomes red (max queue length) the mutators start
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	48 * processing the buffers.
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	49 *
1282 b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1111 diff changeset	50 * There are some interesting cases (when G1UseAdaptiveConcRefinement
b81f3572f355 6928059: G1: command line parameter renaming tonyp parents: 1111 diff changeset	51 * is turned off):
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	52 * 1) green = yellow = red = 0. In this case the mutator will process all
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	53 * buffers. Except for those that are created by the deferred updates
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	54 * machinery during a collection.
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	55 * 2) green = 0. Means no caching. Can be a good way to minimize the
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	56 * amount of time spent updating rsets during a collection.
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	57 */
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	58 int _green_zone;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	59 int _yellow_zone;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	60 int _red_zone;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	61
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	62 int _thread_threshold_step;
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	63
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	64 // Reset the threshold step value based of the current zone boundaries.
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	65 void reset_threshold_step();
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	66
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	67 // The cache for card refinement.
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	68 bool _use_cache;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	69 bool _def_use_cache;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	70
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	71 size_t _n_periods; // Used as clearing epoch
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	72
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	73 // An evicting cache of the number of times each card
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	74 // is accessed. Reduces, but does not eliminate, the amount
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	75 // of duplicated processing of dirty cards.
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	76
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	77 enum SomePrivateConstants {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	78 epoch_bits = 32,
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	79 card_num_shift = epoch_bits,
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	80 epoch_mask = AllBits,
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	81 card_num_mask = AllBits,
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	82
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	83 // The initial cache size is approximately this fraction
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	84 // of a maximal cache (i.e. the size needed for all cards
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	85 // in the heap)
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	86 InitialCacheFraction = 512
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	87 };
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	88
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	89 const static julong card_num_mask_in_place =
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	90 (julong) card_num_mask << card_num_shift;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	91
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	92 typedef struct {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	93 julong _value; // \| card_num \| epoch \|
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	94 } CardEpochCacheEntry;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	95
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	96 julong make_epoch_entry(unsigned int card_num, unsigned int epoch) {
2431 02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	97 assert(0 <= card_num && card_num < _max_cards, "Bounds");
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	98 assert(0 <= epoch && epoch <= _n_periods, "must be");
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	99
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	100 return ((julong) card_num << card_num_shift) \| epoch;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	101 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	102
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	103 unsigned int extract_epoch(julong v) {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	104 return (v & epoch_mask);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	105 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	106
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	107 unsigned int extract_card_num(julong v) {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	108 return (v & card_num_mask_in_place) >> card_num_shift;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	109 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	110
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	111 typedef struct {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	112 unsigned char _count;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	113 unsigned char _evict_count;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	114 } CardCountCacheEntry;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	115
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	116 CardCountCacheEntry* _card_counts;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	117 CardEpochCacheEntry* _card_epochs;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	118
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	119 // The current number of buckets in the card count cache
2431 02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	120 size_t _n_card_counts;
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	121
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	122 // The number of cards for the entire reserved heap
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	123 size_t _max_cards;
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	124
2431 02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	125 // The max number of buckets for the card counts and epochs caches.
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	126 // This is the maximum that the counts and epochs will grow to.
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	127 // It is specified as a fraction or percentage of _max_cards using
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	128 // G1MaxHotCardCountSizePercent.
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	129 size_t _max_n_card_counts;
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	130
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	131 // Possible sizes of the cache: odd primes that roughly double in size.
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	132 // (See jvmtiTagMap.cpp).
2431 02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	133 enum {
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	134 MAX_CC_CACHE_INDEX = 15 // maximum index into the cache size array.
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	135 };
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	136
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	137 static size_t _cc_cache_sizes[MAX_CC_CACHE_INDEX];
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	138
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	139 // The index in _cc_cache_sizes corresponding to the size of
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	140 // _card_counts.
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	141 int _cache_size_index;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	142
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	143 bool _expand_card_counts;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	144
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	145 const jbyte* _ct_bot;
889 15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	146
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	147 jbyte** _hot_cache;
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	148 int _hot_cache_size;
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	149 int _n_hot;
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	150 int _hot_cache_idx;
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	151
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	152 int _hot_cache_par_chunk_size;
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	153 volatile int _hot_cache_par_claimed_idx;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	154
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	155 // Needed to workaround 6817995
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	156 CardTableModRefBS* _ct_bs;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	157 G1CollectedHeap* _g1h;
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	158
2431 02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	159 // Helper routine for expand_card_count_cache().
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	160 // The arrays used to hold the card counts and the epochs must have
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	161 // a 1:1 correspondence. Hence they are allocated and freed together.
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	162 // Returns true if the allocations of both the counts and epochs
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	163 // were successful; false otherwise.
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	164 bool allocate_card_count_cache(size_t n,
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	165 CardCountCacheEntry** counts,
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	166 CardEpochCacheEntry** epochs);
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	167
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	168 // Expands the arrays that hold the card counts and epochs
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	169 // to the cache size at index. Returns true if the expansion/
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	170 // allocation was successful; false otherwise.
02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	171 bool expand_card_count_cache(int index);
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	172
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	173 // hash a given key (index of card_ptr) with the specified size
2431 02f49b66361a 7026932: G1: No need to abort VM when card count cache expansion fails johnc parents: 1972 diff changeset	174 static unsigned int hash(size_t key, size_t size) {
3258 edd9b016deb6 7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment johnc parents: 2431 diff changeset	175 return (unsigned int) (key % size);
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	176 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	177
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	178 // hash a given key (index of card_ptr)
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	179 unsigned int hash(size_t key) {
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	180 return hash(key, _n_card_counts);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	181 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	182
3258 edd9b016deb6 7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment johnc parents: 2431 diff changeset	183 unsigned int ptr_2_card_num(jbyte* card_ptr) {
edd9b016deb6 7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment johnc parents: 2431 diff changeset	184 return (unsigned int) (card_ptr - _ct_bot);
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	185 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	186
3258 edd9b016deb6 7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment johnc parents: 2431 diff changeset	187 jbyte* card_num_2_ptr(unsigned int card_num) {
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	188 return (jbyte*) (_ct_bot + card_num);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	189 }
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	190
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	191 // Returns the count of this card after incrementing it.
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	192 jbyte* add_card_count(jbyte* card_ptr, int* count, bool* defer);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	193
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	194 // Returns true if this card is in a young region
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	195 bool is_young_card(jbyte* card_ptr);
6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	196
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	197 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	198 ConcurrentG1Refine();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	199 ~ConcurrentG1Refine();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	200
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	201 void init(); // Accomplish some initialization that has to wait.
794 315a5d70b295 6484957: G1: parallel concurrent refinement iveresov parents: 579 diff changeset	202 void stop();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	203
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	204 void reinitialize_threads();
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	205
794 315a5d70b295 6484957: G1: parallel concurrent refinement iveresov parents: 579 diff changeset	206 // Iterate over the conc refine threads
315a5d70b295 6484957: G1: parallel concurrent refinement iveresov parents: 579 diff changeset	207 void threads_do(ThreadClosure *tc);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	208
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	209 // If this is the first entry for the slot, writes into the cache and
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	210 // returns NULL. If it causes an eviction, returns the evicted pointer.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	211 // Otherwise, its a cache hit, and returns NULL.
890 6cb8e9df7174 6819077: G1: first GC thread coming late into the GC. johnc parents: 889 diff changeset	212 jbyte* cache_insert(jbyte* card_ptr, bool* defer);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	213
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	214 // Process the cached entries.
1705 2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1552 diff changeset	215 void clean_up_cache(int worker_i, G1RemSet* g1rs, DirtyCardQueue* into_cset_dcq);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	216
889 15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	217 // Set up for parallel processing of the cards in the hot cache
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	218 void clear_hot_cache_claimed_index() {
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	219 _hot_cache_par_claimed_idx = 0;
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	220 }
15c5903cf9e1 6865703: G1: Parallelize hot card cache cleanup johnc parents: 795 diff changeset	221
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	222 // Discard entries in the hot cache.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	223 void clear_hot_cache() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	224 _hot_cache_idx = 0; _n_hot = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	225 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	226
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	227 bool hot_cache_is_empty() { return _n_hot == 0; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	228
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	229 bool use_cache() { return _use_cache; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	230 void set_use_cache(bool b) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	231 if (b) _use_cache = _def_use_cache;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	232 else _use_cache = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	233 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	234
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	235 void clear_and_record_card_counts();
795 215f81b4d9b3 6841831: G1: assert(contains_reference(from),"We just added it!") fires iveresov parents: 794 diff changeset	236
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	237 static int thread_num();
1019 035d2e036a9b 6885041: G1: inconsistent thread dump tonyp parents: 890 diff changeset	238
035d2e036a9b 6885041: G1: inconsistent thread dump tonyp parents: 890 diff changeset	239 void print_worker_threads_on(outputStream* st) const;
1111 44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	240
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	241 void set_green_zone(int x) { _green_zone = x; }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	242 void set_yellow_zone(int x) { _yellow_zone = x; }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	243 void set_red_zone(int x) { _red_zone = x; }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	244
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	245 int green_zone() const { return _green_zone; }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	246 int yellow_zone() const { return _yellow_zone; }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	247 int red_zone() const { return _red_zone; }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	248
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	249 int total_thread_num() const { return _n_threads; }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	250 int worker_thread_num() const { return _n_worker_threads; }
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	251
44f61c24ddab 6862387: tune concurrent refinement further iveresov parents: 1019 diff changeset	252 int thread_threshold_step() const { return _thread_threshold_step; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	253 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	254
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1705 diff changeset	255 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINE_HPP

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/concurrentG1Refine.hpp @ 6842:b9a9ed0f8eeb