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

annotate src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 6254:a2f7274eb6ef

7114678: G1: various small fixes, code cleanup, and refactoring Summary: Various cleanups as a prelude to introducing iterators for HeapRegions. Reviewed-by: johnc, brutisso

author	tonyp
date	Thu, 19 Jul 2012 15:15:54 -0700
parents	d2a62e0f25eb
children	27714220e50e

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.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	54 uint _length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	55
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	56 // 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	57 // parallel GC workers.
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	58 uint _first_par_unreserved_idx;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	59
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	60 // 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	61 // 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	62 // collection.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	63 size_t _region_live_threshold_bytes;
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	64
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	65 // 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	66 size_t _remaining_reclaimable_bytes;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	67
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	68 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	69
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	70 // 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	71 // 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	72 HeapRegion* peek() {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	73 HeapRegion* res = NULL;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	74 if (_curr_index < _length) {
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	75 res = regions_at(_curr_index);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	76 assert(res != NULL,
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	77 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	78 _curr_index));
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	79 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	80 return res;
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
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	83 // 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	84 // 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	85 // in the CSet chooser.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	86 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	87 assert(hr != NULL, "pre-condition");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	88 assert(_curr_index < _length, "pre-condition");
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	89 assert(regions_at(_curr_index) == hr, "pre-condition");
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	90 regions_at_put(_curr_index, NULL);
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	91 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	92 err_msg("remaining reclaimable bytes inconsistent "
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	93 "from region: "SIZE_FORMAT" remaining: "SIZE_FORMAT,
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	94 hr->reclaimable_bytes(), _remaining_reclaimable_bytes));
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	95 _remaining_reclaimable_bytes -= hr->reclaimable_bytes();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	96 _curr_index += 1;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	97 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	98
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	99 CollectionSetChooser();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	100
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	101 void sort_regions();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	102
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	103 // 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	104 // 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	105 // 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	106 // live bytes are over the threshold.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	107 bool should_add(HeapRegion* hr) {
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	108 assert(hr->is_marked(), "pre-condition");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	109 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	110 return !hr->isHumongous() &&
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	111 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	112 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	113
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	114 // Calculate the minimum number of old regions we'll add to the CSet
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	115 // during a mixed GC.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	116 uint calc_min_old_cset_length();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	117
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	118 // Calculate the maximum number of old regions we'll add to the CSet
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	119 // during a mixed GC.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	120 uint calc_max_old_cset_length();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	121
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	122 // Serial version.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	123 void add_region(HeapRegion *hr);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	124
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	125 // Must be called before calls to claim_array_chunk().
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	126 // 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	127 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	128 // 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	129 // 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	130 // calling thread using set_region() (to NULL if necessary).
f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	131 uint claim_array_chunk(uint chunk_size);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	132 // 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	133 // first if in parallel.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	134 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	135 // 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	136 // and the amount of reclaimable bytes by reclaimable_bytes.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	137 void update_totals(uint region_num, size_t reclaimable_bytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	138
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	139 void clear();
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 // 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	142 uint remaining_regions() { return _length - _curr_index; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	143
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	144 // 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	145 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	146
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	147 // 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	148 // all the candidate regions in the CSet chooser.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	149 size_t remaining_reclaimable_bytes() { return _remaining_reclaimable_bytes; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	150
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	151 // Returns true if the used portion of "_regions" is properly
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	152 // sorted, otherwise asserts false.
6011 f7a8920427a6 7145441: G1: collection set chooser-related cleanup tonyp parents: 6010 diff changeset	153 void verify() PRODUCT_RETURN;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	154 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	155
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	156 class CSetChooserParUpdater : public StackObj {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	157 private:
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	158 CollectionSetChooser* _chooser;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	159 bool _parallel;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	160 uint _chunk_size;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	161 uint _cur_chunk_idx;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	162 uint _cur_chunk_end;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	163 uint _regions_added;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	164 size_t _reclaimable_bytes_added;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	165
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	166 public:
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	167 CSetChooserParUpdater(CollectionSetChooser* chooser,
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	168 bool parallel, uint chunk_size) :
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	169 _chooser(chooser), _parallel(parallel), _chunk_size(chunk_size),
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	170 _cur_chunk_idx(0), _cur_chunk_end(0),
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	171 _regions_added(0), _reclaimable_bytes_added(0) { }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	172
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	173 ~CSetChooserParUpdater() {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	174 if (_parallel && _regions_added > 0) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	175 _chooser->update_totals(_regions_added, _reclaimable_bytes_added);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	176 }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	177 }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	178
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	179 void add_region(HeapRegion* hr) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	180 if (_parallel) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	181 if (_cur_chunk_idx == _cur_chunk_end) {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	182 _cur_chunk_idx = _chooser->claim_array_chunk(_chunk_size);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	183 _cur_chunk_end = _cur_chunk_idx + _chunk_size;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	184 }
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	185 assert(_cur_chunk_idx < _cur_chunk_end, "invariant");
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	186 _chooser->set_region(_cur_chunk_idx, hr);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	187 _cur_chunk_idx += 1;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	188 } else {
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	189 _chooser->add_region(hr);
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 _regions_added += 1;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	192 _reclaimable_bytes_added += hr->reclaimable_bytes();
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
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	195 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	196 };
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	197
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	198 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	199

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 6254:a2f7274eb6ef