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

annotate src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 17524:89152779163c

Merge with jdk8-b132

author	Gilles Duboscq <duboscq@ssw.jku.at>
date	Wed, 15 Oct 2014 11:59:32 +0200
parents	4ca6dc0799b6
children

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
17524 89152779163c Merge with jdk8-b132 Gilles Duboscq <duboscq@ssw.jku.at> parents: 14909 diff changeset	2 * Copyright (c) 2001, 2013, 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 @ 17524:89152779163c