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

annotate src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 8733:9def4075da6d

8008079: G1: Add nextObject routine to CMBitMapRO and replace nextWord Summary: Update the task local finger to the start of the next object when marking aborts, in order to avoid the redundant scanning of all 0's when the marking task restarts, if otherwise updating to the next word. In addition, reuse the routine nextObject() in routine iterate(). Reviewed-by: johnc, ysr Contributed-by: tamao <tao.mao@oracle.com>

author	tamao
date	Tue, 05 Mar 2013 15:36:56 -0800
parents	27714220e50e
children	de6a9e811145

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 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: 579 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 579 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: 579 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: 1552 diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "gc_implementation/g1/heapRegion.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "utilities/growableArray.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6011 diff changeset	31 class CollectionSetChooser: public CHeapObj<mtGC> {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	32
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	33 GrowableArray<HeapRegion*> _regions;
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	34
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	35 // Unfortunately, GrowableArray uses ints for length and indexes. To
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	36 // avoid excessive casting in the rest of the class the following
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	37 // wrapper methods are provided that use uints.
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	38
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	39 uint regions_length() { return (uint) _regions.length(); }
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	40 HeapRegion* regions_at(uint i) { return _regions.at((int) i); }
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	41 void regions_at_put(uint i, HeapRegion* hr) {
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	42 _regions.at_put((int) i, hr);
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	43 }
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	44 void regions_at_put_grow(uint i, HeapRegion* hr) {
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	45 _regions.at_put_grow((int) i, hr);
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	46 }
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	47 void regions_trunc_to(uint i) { _regions.trunc_to((uint) i); }
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	48
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	49 // The index of the next candidate old region to be considered for
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	50 // addition to the CSet.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	51 uint _curr_index;
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	52
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	53 // The number of candidate old regions added to the CSet chooser.
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 6254 diff changeset	54 // Note: this is not updated when removing a region using
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 6254 diff changeset	55 // remove_and_move_to_next() below.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	56 uint _length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	57
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	58 // Keeps track of the start of the next array chunk to be claimed by
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	59 // parallel GC workers.
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	60 uint _first_par_unreserved_idx;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	61
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	62 // If a region has more live bytes than this threshold, it will not
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	63 // be added to the CSet chooser and will not be a candidate for
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	64 // collection.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	65 size_t _region_live_threshold_bytes;
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	66
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	67 // The sum of reclaimable bytes over all the regions in the CSet chooser.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	68 size_t _remaining_reclaimable_bytes;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	69
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	70 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	71
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	72 // Return the current candidate region to be considered for
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	73 // collection without removing it from the CSet chooser.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	74 HeapRegion* peek() {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	75 HeapRegion* res = NULL;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	76 if (_curr_index < _length) {
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	77 res = regions_at(_curr_index);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	78 assert(res != NULL,
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	79 err_msg("Unexpected NULL hr in _regions at index %u",
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	80 _curr_index));
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	81 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	82 return res;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	83 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	84
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	85 // Remove the given region from the CSet chooser and move to the
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	86 // next one. The given region should be the current candidate region
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	87 // in the CSet chooser.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	88 void remove_and_move_to_next(HeapRegion* hr) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	89 assert(hr != NULL, "pre-condition");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	90 assert(_curr_index < _length, "pre-condition");
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	91 assert(regions_at(_curr_index) == hr, "pre-condition");
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	92 regions_at_put(_curr_index, NULL);
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	93 assert(hr->reclaimable_bytes() <= _remaining_reclaimable_bytes,
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	94 err_msg("remaining reclaimable bytes inconsistent "
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	95 "from region: "SIZE_FORMAT" remaining: "SIZE_FORMAT,
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	96 hr->reclaimable_bytes(), _remaining_reclaimable_bytes));
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	97 _remaining_reclaimable_bytes -= hr->reclaimable_bytes();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	98 _curr_index += 1;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	99 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	100
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	101 CollectionSetChooser();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	102
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	103 void sort_regions();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	104
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	105 // Determine whether to add the given region to the CSet chooser or
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	106 // not. Currently, we skip humongous regions (we never add them to
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	107 // the CSet, we only reclaim them during cleanup) and regions whose
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	108 // live bytes are over the threshold.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	109 bool should_add(HeapRegion* hr) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	110 assert(hr->is_marked(), "pre-condition");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	111 assert(!hr->is_young(), "should never consider young regions");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	112 return !hr->isHumongous() &&
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	113 hr->live_bytes() < _region_live_threshold_bytes;
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	114 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	115
8681 27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 6254 diff changeset	116 // Returns the number candidate old regions added
27714220e50e 8007036: G1: Too many old regions added to last mixed GC johnc parents: 6254 diff changeset	117 uint length() { return _length; }
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	118
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	119 // Serial version.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	120 void add_region(HeapRegion *hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	121
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	122 // Must be called before calls to claim_array_chunk().
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	123 // n_regions is the number of regions, chunk_size the chunk size.
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	124 void prepare_for_par_region_addition(uint n_regions, uint chunk_size);
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	125 // Returns the first index in a contiguous chunk of chunk_size indexes
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	126 // that the calling thread has reserved. These must be set by the
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	127 // calling thread using set_region() (to NULL if necessary).
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	128 uint claim_array_chunk(uint chunk_size);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	129 // Set the marked array entry at index to hr. Careful to claim the index
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	130 // first if in parallel.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	131 void set_region(uint index, HeapRegion* hr);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	132 // Atomically increment the number of added regions by region_num
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	133 // and the amount of reclaimable bytes by reclaimable_bytes.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	134 void update_totals(uint region_num, size_t reclaimable_bytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	135
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	136 void clear();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	137
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	138 // Return the number of candidate regions that remain to be collected.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	139 uint remaining_regions() { return _length - _curr_index; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	140
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	141 // Determine whether the CSet chooser has more candidate regions or not.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	142 bool is_empty() { return remaining_regions() == 0; }
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	143
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	144 // Return the reclaimable bytes that remain to be collected on
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	145 // all the candidate regions in the CSet chooser.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	146 size_t remaining_reclaimable_bytes() { return _remaining_reclaimable_bytes; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	147
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	148 // Returns true if the used portion of "_regions" is properly
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	149 // sorted, otherwise asserts false.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	150 void verify() PRODUCT_RETURN;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	151 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	152
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	153 class CSetChooserParUpdater : public StackObj {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	154 private:
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	155 CollectionSetChooser* _chooser;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	156 bool _parallel;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	157 uint _chunk_size;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	158 uint _cur_chunk_idx;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	159 uint _cur_chunk_end;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	160 uint _regions_added;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	161 size_t _reclaimable_bytes_added;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	162
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	163 public:
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	164 CSetChooserParUpdater(CollectionSetChooser* chooser,
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	165 bool parallel, uint chunk_size) :
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	166 _chooser(chooser), _parallel(parallel), _chunk_size(chunk_size),
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	167 _cur_chunk_idx(0), _cur_chunk_end(0),
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	168 _regions_added(0), _reclaimable_bytes_added(0) { }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	169
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	170 ~CSetChooserParUpdater() {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	171 if (_parallel && _regions_added > 0) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	172 _chooser->update_totals(_regions_added, _reclaimable_bytes_added);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	173 }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	174 }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	175
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	176 void add_region(HeapRegion* hr) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	177 if (_parallel) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	178 if (_cur_chunk_idx == _cur_chunk_end) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	179 _cur_chunk_idx = _chooser->claim_array_chunk(_chunk_size);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	180 _cur_chunk_end = _cur_chunk_idx + _chunk_size;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	181 }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	182 assert(_cur_chunk_idx < _cur_chunk_end, "invariant");
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	183 _chooser->set_region(_cur_chunk_idx, hr);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	184 _cur_chunk_idx += 1;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	185 } else {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	186 _chooser->add_region(hr);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	187 }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	188 _regions_added += 1;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	189 _reclaimable_bytes_added += hr->reclaimable_bytes();
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	190 }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	191
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	192 bool should_add(HeapRegion* hr) { return _chooser->should_add(hr); }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	193 };
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	194
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	195 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	196

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 8733:9def4075da6d