truffle: src/share/vm/gc_implementation/g1/heapRegionSeq.cpp annotate

annotate src/share/vm/gc_implementation/g1/heapRegionSeq.cpp @ 20336:6701abbc4441

8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data Summary: Let HeapRegionSeq manage the heap region and auxiliary data to decrease the amount of responsibilities of G1CollectedHeap, and encapsulate this work from other code. Reviewed-by: jwilhelm, jmasa, mgerdin, brutisso

author	tschatzl
date	Tue, 19 Aug 2014 10:50:27 +0200
parents	eec72fa4b108
children	1f1d373cd044

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
17937 78bbf4d43a14 8037816: Fix for 8036122 breaks build with Xcode5/clang drchase parents: 17736 diff changeset	2 * Copyright (c) 2001, 2014, 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: 960 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 960 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: 960 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: 1886 diff changeset	25 #include "precompiled.hpp"
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	26 #include "gc_implementation/g1/heapRegion.hpp"
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	27 #include "gc_implementation/g1/heapRegionSeq.inline.hpp"
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	28 #include "gc_implementation/g1/heapRegionSet.inline.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1886 diff changeset	29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	30 #include "gc_implementation/g1/concurrentG1Refine.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1886 diff changeset	31 #include "memory/allocation.hpp"
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	32
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	33 void HeapRegionSeq::initialize(ReservedSpace reserved) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	34 _reserved = reserved;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	35 _storage.initialize(reserved, 0);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	36
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	37 _num_committed = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	38
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	39 _allocated_heapregions_length = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	40
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	41 _regions.initialize((HeapWord)_storage.low_boundary(), (HeapWord)_storage.high_boundary(), HeapRegion::GrainBytes);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	42 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	43
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	44 bool HeapRegionSeq::is_available(uint region) const {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	45 return region < _num_committed;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	46 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	47
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	48 #ifdef ASSERT
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	49 bool HeapRegionSeq::is_free(HeapRegion* hr) const {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	50 return _free_list.contains(hr);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	51 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	52 #endif
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	53
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	54 HeapRegion* HeapRegionSeq::new_heap_region(uint hrs_index) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	55 HeapWord* bottom = G1CollectedHeap::heap()->bottom_addr_for_region(hrs_index);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	56 MemRegion mr(bottom, bottom + HeapRegion::GrainWords);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	57 assert(reserved().contains(mr), "invariant");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	58 return new HeapRegion(hrs_index, G1CollectedHeap::heap()->bot_shared(), mr);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	59 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	60
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	61 void HeapRegionSeq::update_committed_space(HeapWord* old_end,
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	62 HeapWord* new_end) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	63 assert(old_end != new_end, "don't call this otherwise");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	64 // We may not have officially committed the area. So construct and use a separate one.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	65 MemRegion new_committed(heap_bottom(), new_end);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	66 // Tell the card table about the update.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	67 Universe::heap()->barrier_set()->resize_covered_region(new_committed);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	68 // Tell the BOT about the update.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	69 G1CollectedHeap::heap()->bot_shared()->resize(new_committed.word_size());
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	70 // Tell the hot card cache about the update
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	71 G1CollectedHeap::heap()->concurrent_g1_refine()->hot_card_cache()->resize_card_counts(new_committed.byte_size());
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	72 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	73
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	74 void HeapRegionSeq::commit_regions(uint index, size_t num_regions) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	75 guarantee(num_regions > 0, "Must commit more than zero regions");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	76 guarantee(_num_committed + num_regions <= max_length(), "Cannot commit more than the maximum amount of regions");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	77
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	78 _storage.expand_by(num_regions * HeapRegion::GrainBytes);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	79 update_committed_space(heap_top(), heap_top() + num_regions * HeapRegion::GrainWords);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	80 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	81
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	82 void HeapRegionSeq::uncommit_regions(uint start, size_t num_regions) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	83 guarantee(num_regions >= 1, "Need to specify at least one region to uncommit");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	84 guarantee(_num_committed >= num_regions, "pre-condition");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	85
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	86 // Print before uncommitting.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	87 if (G1CollectedHeap::heap()->hr_printer()->is_active()) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	88 for (uint i = start; i < start + num_regions; i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	89 HeapRegion* hr = at(i);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	90 G1CollectedHeap::heap()->hr_printer()->uncommit(hr->bottom(), hr->end());
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2133 diff changeset	91 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2133 diff changeset	92 }
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	93
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	94 HeapWord* old_end = heap_top();
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	95 _num_committed -= (uint)num_regions;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	96 OrderAccess::fence();
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	97
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	98 _storage.shrink_by(num_regions * HeapRegion::GrainBytes);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	99 update_committed_space(old_end, heap_top());
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	100 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	101
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	102 void HeapRegionSeq::make_regions_available(uint start, uint num_regions) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	103 guarantee(num_regions > 0, "No point in calling this for zero regions");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	104 commit_regions(start, num_regions);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	105 for (uint i = start; i < start + num_regions; i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	106 if (_regions.get_by_index(i) == NULL) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	107 HeapRegion* new_hr = new_heap_region(i);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	108 _regions.set_by_index(i, new_hr);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	109 _allocated_heapregions_length = MAX2(_allocated_heapregions_length, i + 1);
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2133 diff changeset	110 }
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	111 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	112
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	113 _num_committed += (size_t)num_regions;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	114
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	115 OrderAccess::fence();
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	116
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	117 for (uint i = start; i < start + num_regions; i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	118 assert(is_available(i), err_msg("Just made region %u available but is apparently not.", i));
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	119 HeapRegion* hr = at(i);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	120 if (G1CollectedHeap::heap()->hr_printer()->is_active()) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	121 G1CollectedHeap::heap()->hr_printer()->commit(hr->bottom(), hr->end());
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	122 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	123 HeapWord* bottom = G1CollectedHeap::heap()->bottom_addr_for_region(i);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	124 MemRegion mr(bottom, bottom + HeapRegion::GrainWords);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	125
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	126 hr->initialize(mr);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	127 insert_into_free_list(at(i));
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2133 diff changeset	128 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2133 diff changeset	129 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2133 diff changeset	130
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	131 uint HeapRegionSeq::expand_by(uint num_regions) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	132 // Only ever expand from the end of the heap.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	133 return expand_at(_num_committed, num_regions);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	134 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	135
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	136 uint HeapRegionSeq::expand_at(uint start, uint num_regions) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	137 if (num_regions == 0) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	138 return 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	139 }
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	140
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	141 uint cur = start;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	142 uint idx_last_found = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	143 uint num_last_found = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	144
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	145 uint expanded = 0;
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	146
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	147 while (expanded < num_regions &&
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	148 (num_last_found = find_unavailable_from_idx(cur, &idx_last_found)) > 0) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	149 uint to_expand = MIN2(num_regions - expanded, num_last_found);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	150 make_regions_available(idx_last_found, to_expand);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	151 expanded += to_expand;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	152 cur = idx_last_found + num_last_found + 1;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	153 }
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	154
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	155 verify_optional();
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	156 return expanded;
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	157 }
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	158
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	159 uint HeapRegionSeq::find_contiguous(size_t num, bool empty_only) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	160 uint found = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	161 size_t length_found = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	162 uint cur = 0;
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	163
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	164 while (length_found < num && cur < max_length()) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	165 HeapRegion* hr = _regions.get_by_index(cur);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	166 if ((!empty_only && !is_available(cur)) \|\| (is_available(cur) && hr != NULL && hr->is_empty())) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	167 // This region is a potential candidate for allocation into.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	168 length_found++;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	169 } else {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	170 // This region is not a candidate. The next region is the next possible one.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	171 found = cur + 1;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	172 length_found = 0;
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	173 }
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	174 cur++;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	175 }
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	176
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	177 if (length_found == num) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	178 for (uint i = found; i < (found + num); i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	179 HeapRegion* hr = _regions.get_by_index(i);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	180 // sanity check
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	181 guarantee((!empty_only && !is_available(i)) \|\| (is_available(i) && hr != NULL && hr->is_empty()),
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	182 err_msg("Found region sequence starting at " UINT32_FORMAT ", length " SIZE_FORMAT
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	183 " that is not empty at " UINT32_FORMAT ". Hr is " PTR_FORMAT, found, num, i, p2i(hr)));
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	184 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	185 return found;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	186 } else {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	187 return G1_NO_HRS_INDEX;
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2133 diff changeset	188 }
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	189 }
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	190
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	191 HeapRegion* HeapRegionSeq::next_region_in_heap(const HeapRegion* r) const {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	192 guarantee(r != NULL, "Start region must be a valid region");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	193 guarantee(is_available(r->hrs_index()), err_msg("Trying to iterate starting from region %u which is not in the heap", r->hrs_index()));
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	194 for (uint i = r->hrs_index() + 1; i < _allocated_heapregions_length; i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	195 HeapRegion* hr = _regions.get_by_index(i);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	196 if (is_available(i)) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	197 return hr;
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	198 }
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2133 diff changeset	199 }
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	200 return NULL;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	201 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	202
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	203 void HeapRegionSeq::iterate(HeapRegionClosure* blk) const {
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	204 uint len = max_length();
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	205
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	206 for (uint i = 0; i < len; i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	207 if (!is_available(i)) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	208 continue;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	209 }
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	210 guarantee(at(i) != NULL, err_msg("Tried to access region %u that has a NULL HeapRegion*", i));
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	211 bool res = blk->doHeapRegion(at(i));
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	212 if (res) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	213 blk->incomplete();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	214 return;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	215 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	216 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	217 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	218
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	219 uint HeapRegionSeq::find_unavailable_from_idx(uint start_idx, uint* res_idx) const {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	220 guarantee(res_idx != NULL, "checking");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	221 guarantee(start_idx <= (max_length() + 1), "checking");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	222
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	223 uint num_regions = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	224
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	225 uint cur = start_idx;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	226 while (cur < max_length() && is_available(cur)) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	227 cur++;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	228 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	229 if (cur == max_length()) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	230 return num_regions;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	231 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	232 *res_idx = cur;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	233 while (cur < max_length() && !is_available(cur)) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	234 cur++;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	235 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	236 num_regions = cur - *res_idx;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	237 #ifdef ASSERT
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	238 for (uint i = res_idx; i < (res_idx + num_regions); i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	239 assert(!is_available(i), "just checking");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	240 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	241 assert(cur == max_length() \|\| num_regions == 0 \|\| is_available(cur),
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	242 err_msg("The region at the current position %u must be available or at the end of the heap.", cur));
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	243 #endif
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	244 return num_regions;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	245 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	246
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	247 uint HeapRegionSeq::start_region_for_worker(uint worker_i, uint num_workers, uint num_regions) const {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	248 return num_regions * worker_i / num_workers;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	249 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	250
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	251 void HeapRegionSeq::par_iterate(HeapRegionClosure* blk, uint worker_id, uint num_workers, jint claim_value) const {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	252 const uint start_index = start_region_for_worker(worker_id, num_workers, _allocated_heapregions_length);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	253
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	254 // Every worker will actually look at all regions, skipping over regions that
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	255 // are currently not committed.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	256 // This also (potentially) iterates over regions newly allocated during GC. This
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	257 // is no problem except for some extra work.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	258 for (uint count = 0; count < _allocated_heapregions_length; count++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	259 const uint index = (start_index + count) % _allocated_heapregions_length;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	260 assert(0 <= index && index < _allocated_heapregions_length, "sanity");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	261 // Skip over unavailable regions
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	262 if (!is_available(index)) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	263 continue;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	264 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	265 HeapRegion* r = _regions.get_by_index(index);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	266 // We'll ignore "continues humongous" regions (we'll process them
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	267 // when we come across their corresponding "start humongous"
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	268 // region) and regions already claimed.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	269 if (r->claim_value() == claim_value \|\| r->continuesHumongous()) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	270 continue;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	271 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	272 // OK, try to claim it
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	273 if (!r->claimHeapRegion(claim_value)) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	274 continue;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	275 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	276 // Success!
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	277 if (r->startsHumongous()) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	278 // If the region is "starts humongous" we'll iterate over its
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	279 // "continues humongous" first; in fact we'll do them
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	280 // first. The order is important. In one case, calling the
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	281 // closure on the "starts humongous" region might de-allocate
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	282 // and clear all its "continues humongous" regions and, as a
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	283 // result, we might end up processing them twice. So, we'll do
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	284 // them first (note: most closures will ignore them anyway) and
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	285 // then we'll do the "starts humongous" region.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	286 for (uint ch_index = index + 1; ch_index < index + r->region_num(); ch_index++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	287 HeapRegion* chr = _regions.get_by_index(ch_index);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	288
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	289 assert(chr->continuesHumongous(), "Must be humongous region");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	290 assert(chr->humongous_start_region() == r,
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	291 err_msg("Must work on humongous continuation of the original start region "
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	292 PTR_FORMAT ", but is " PTR_FORMAT, p2i(r), p2i(chr)));
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	293 assert(chr->claim_value() != claim_value,
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	294 "Must not have been claimed yet because claiming of humongous continuation first claims the start region");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	295
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	296 bool claim_result = chr->claimHeapRegion(claim_value);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	297 // We should always be able to claim it; no one else should
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	298 // be trying to claim this region.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	299 guarantee(claim_result, "We should always be able to claim the continuesHumongous part of the humongous object");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	300
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	301 bool res2 = blk->doHeapRegion(chr);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	302 if (res2) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	303 return;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	304 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	305
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	306 // Right now, this holds (i.e., no closure that actually
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	307 // does something with "continues humongous" regions
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	308 // clears them). We might have to weaken it in the future,
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	309 // but let's leave these two asserts here for extra safety.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	310 assert(chr->continuesHumongous(), "should still be the case");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	311 assert(chr->humongous_start_region() == r, "sanity");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	312 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	313 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	314
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	315 bool res = blk->doHeapRegion(r);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	316 if (res) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	317 return;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	318 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	319 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	320 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	321
10242 b0d20fa374b4 8013872: G1: HeapRegionSeq::shrink_by() has invalid assert brutisso parents: 6197 diff changeset	322 uint HeapRegionSeq::shrink_by(uint num_regions_to_remove) {
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	323 assert(length() > 0, "the region sequence should not be empty");
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	324 assert(length() <= _allocated_heapregions_length, "invariant");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	325 assert(_allocated_heapregions_length > 0, "we should have at least one region committed");
10242 b0d20fa374b4 8013872: G1: HeapRegionSeq::shrink_by() has invalid assert brutisso parents: 6197 diff changeset	326 assert(num_regions_to_remove < length(), "We should never remove all regions");
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	327
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	328 if (num_regions_to_remove == 0) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	329 return 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	330 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	331
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	332 uint removed = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	333 uint cur = _allocated_heapregions_length - 1;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	334 uint idx_last_found = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	335 uint num_last_found = 0;
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	336
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	337 if ((num_last_found = find_empty_from_idx_reverse(cur, &idx_last_found)) > 0) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	338 // Only allow uncommit from the end of the heap.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	339 if ((idx_last_found + num_last_found) != _allocated_heapregions_length) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	340 return 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	341 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	342 uint to_remove = MIN2(num_regions_to_remove - removed, num_last_found);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	343
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	344 uncommit_regions(idx_last_found + num_last_found - to_remove, to_remove);
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	345
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	346 cur -= num_last_found;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	347 removed += to_remove;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	348 }
10242 b0d20fa374b4 8013872: G1: HeapRegionSeq::shrink_by() has invalid assert brutisso parents: 6197 diff changeset	349
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	350 verify_optional();
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	351
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	352 return removed;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	353 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	354
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	355 uint HeapRegionSeq::find_empty_from_idx_reverse(uint start_idx, uint* res_idx) const {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	356 guarantee(start_idx < _allocated_heapregions_length, "checking");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	357 guarantee(res_idx != NULL, "checking");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	358
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	359 uint num_regions_found = 0;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	360
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	361 jlong cur = start_idx;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	362 while (cur != -1 && !(is_available(cur) && at(cur)->is_empty())) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	363 cur--;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	364 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	365 if (cur == -1) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	366 return num_regions_found;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	367 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	368 jlong old_cur = cur;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	369 // cur indexes the first empty region
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	370 while (cur != -1 && is_available(cur) && at(cur)->is_empty()) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	371 cur--;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	372 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	373 *res_idx = cur + 1;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	374 num_regions_found = old_cur - cur;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	375
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	376 #ifdef ASSERT
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	377 for (uint i = res_idx; i < (res_idx + num_regions_found); i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	378 assert(at(i)->is_empty(), "just checking");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	379 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	380 #endif
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	381 return num_regions_found;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	382 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	383
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	384 void HeapRegionSeq::verify() {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	385 guarantee(length() <= _allocated_heapregions_length,
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 3766 diff changeset	386 err_msg("invariant: _length: %u _allocated_length: %u",
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	387 length(), _allocated_heapregions_length));
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	388 guarantee(_allocated_heapregions_length <= max_length(),
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 3766 diff changeset	389 err_msg("invariant: _allocated_length: %u _max_length: %u",
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	390 _allocated_heapregions_length, max_length()));
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	391
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	392 bool prev_committed = true;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	393 uint num_committed = 0;
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: 10242 diff changeset	394 HeapWord* prev_end = heap_bottom();
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	395 for (uint i = 0; i < _allocated_heapregions_length; i++) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	396 if (!is_available(i)) {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	397 prev_committed = false;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	398 continue;
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	399 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	400 num_committed++;
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: 10242 diff changeset	401 HeapRegion* hr = _regions.get_by_index(i);
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 3766 diff changeset	402 guarantee(hr != NULL, err_msg("invariant: i: %u", i));
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	403 guarantee(!prev_committed \|\| hr->bottom() == prev_end,
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 3766 diff changeset	404 err_msg("invariant i: %u "HR_FORMAT" prev_end: "PTR_FORMAT,
17937 78bbf4d43a14 8037816: Fix for 8036122 breaks build with Xcode5/clang drchase parents: 17736 diff changeset	405 i, HR_FORMAT_PARAMS(hr), p2i(prev_end)));
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	406 guarantee(hr->hrs_index() == i,
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 3766 diff changeset	407 err_msg("invariant: i: %u hrs_index(): %u", i, hr->hrs_index()));
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	408 // Asserts will fire if i is >= _length
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	409 HeapWord* addr = hr->bottom();
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	410 guarantee(addr_to_region(addr) == hr, "sanity");
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	411 // We cannot check whether the region is part of a particular set: at the time
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	412 // this method may be called, we have only completed allocation of the regions,
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	413 // but not put into a region set.
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	414 prev_committed = true;
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	415 if (hr->startsHumongous()) {
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	416 prev_end = hr->orig_end();
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	417 } else {
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	418 prev_end = hr->end();
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	419 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	420 }
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	421 for (uint i = _allocated_heapregions_length; i < max_length(); i++) {
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: 10242 diff changeset	422 guarantee(_regions.get_by_index(i) == NULL, err_msg("invariant i: %u", i));
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	423 }
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	424
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	425 guarantee(num_committed == _num_committed, err_msg("Found %u committed regions, but should be %u", num_committed, _num_committed));
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	426 _free_list.verify();
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	427 }
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	428
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	429 #ifndef PRODUCT
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	430 void HeapRegionSeq::verify_optional() {
6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	431 verify();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	432 }
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 2361 diff changeset	433 #endif // PRODUCT
20336 6701abbc4441 8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data tschatzl parents: 20335 diff changeset	434

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/heapRegionSeq.cpp @ 20336:6701abbc4441