Tue, 19 May 2015 15:49:27 +0200
8061715: gc/g1/TestShrinkAuxiliaryData15.java fails with java.lang.RuntimeException: heap decommit failed - after > before
Summary: added WhiteBox methods to count regions and exact aux data sizes
Reviewed-by: jwilhelm, brutisso
ysr@777 | 1 | /* |
johnc@5078 | 2 | * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
ysr@777 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
ysr@777 | 4 | * |
ysr@777 | 5 | * This code is free software; you can redistribute it and/or modify it |
ysr@777 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ysr@777 | 7 | * published by the Free Software Foundation. |
ysr@777 | 8 | * |
ysr@777 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
ysr@777 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
ysr@777 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
ysr@777 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
ysr@777 | 13 | * accompanied this code). |
ysr@777 | 14 | * |
ysr@777 | 15 | * You should have received a copy of the GNU General Public License version |
ysr@777 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
ysr@777 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
ysr@777 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
ysr@777 | 22 | * |
ysr@777 | 23 | */ |
ysr@777 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "gc_implementation/g1/concurrentG1Refine.hpp" |
stefank@2314 | 27 | #include "gc_implementation/g1/concurrentG1RefineThread.hpp" |
stefank@2314 | 28 | #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
johnc@5078 | 29 | #include "gc_implementation/g1/g1HotCardCache.hpp" |
ehelin@6168 | 30 | #include "runtime/java.hpp" |
ysr@777 | 31 | |
tschatzl@6930 | 32 | ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h, CardTableEntryClosure* refine_closure) : |
johnc@5078 | 33 | _threads(NULL), _n_threads(0), |
johnc@5078 | 34 | _hot_card_cache(g1h) |
ysr@777 | 35 | { |
iveresov@1546 | 36 | // Ergomonically select initial concurrent refinement parameters |
tonyp@1717 | 37 | if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) { |
tonyp@1717 | 38 | FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, MAX2<int>(ParallelGCThreads, 1)); |
iveresov@1546 | 39 | } |
tonyp@1717 | 40 | set_green_zone(G1ConcRefinementGreenZone); |
iveresov@1546 | 41 | |
tonyp@1717 | 42 | if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) { |
tonyp@1717 | 43 | FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3); |
iveresov@1546 | 44 | } |
tonyp@1717 | 45 | set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone())); |
iveresov@1546 | 46 | |
tonyp@1717 | 47 | if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) { |
tonyp@1717 | 48 | FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2); |
iveresov@1546 | 49 | } |
tonyp@1717 | 50 | set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone())); |
johnc@5078 | 51 | |
iveresov@1546 | 52 | _n_worker_threads = thread_num(); |
iveresov@1546 | 53 | // We need one extra thread to do the young gen rset size sampling. |
iveresov@1546 | 54 | _n_threads = _n_worker_threads + 1; |
johnc@5078 | 55 | |
iveresov@1546 | 56 | reset_threshold_step(); |
iveresov@1546 | 57 | |
zgu@3900 | 58 | _threads = NEW_C_HEAP_ARRAY(ConcurrentG1RefineThread*, _n_threads, mtGC); |
johnc@5078 | 59 | |
vkempik@6552 | 60 | uint worker_id_offset = DirtyCardQueueSet::num_par_ids(); |
johnc@5078 | 61 | |
iveresov@1546 | 62 | ConcurrentG1RefineThread *next = NULL; |
vkempik@6552 | 63 | for (uint i = _n_threads - 1; i != UINT_MAX; i--) { |
tschatzl@6930 | 64 | ConcurrentG1RefineThread* t = new ConcurrentG1RefineThread(this, next, refine_closure, worker_id_offset, i); |
iveresov@1546 | 65 | assert(t != NULL, "Conc refine should have been created"); |
ehelin@6168 | 66 | if (t->osthread() == NULL) { |
ehelin@6168 | 67 | vm_shutdown_during_initialization("Could not create ConcurrentG1RefineThread"); |
ehelin@6168 | 68 | } |
ehelin@6168 | 69 | |
iveresov@1546 | 70 | assert(t->cg1r() == this, "Conc refine thread should refer to this"); |
iveresov@1546 | 71 | _threads[i] = t; |
iveresov@1546 | 72 | next = t; |
ysr@777 | 73 | } |
ysr@777 | 74 | } |
ysr@777 | 75 | |
iveresov@1546 | 76 | void ConcurrentG1Refine::reset_threshold_step() { |
tonyp@1717 | 77 | if (FLAG_IS_DEFAULT(G1ConcRefinementThresholdStep)) { |
iveresov@1546 | 78 | _thread_threshold_step = (yellow_zone() - green_zone()) / (worker_thread_num() + 1); |
iveresov@1546 | 79 | } else { |
tonyp@1717 | 80 | _thread_threshold_step = G1ConcRefinementThresholdStep; |
iveresov@1230 | 81 | } |
iveresov@1546 | 82 | } |
iveresov@1546 | 83 | |
tschatzl@7051 | 84 | void ConcurrentG1Refine::init(G1RegionToSpaceMapper* card_counts_storage) { |
tschatzl@7051 | 85 | _hot_card_cache.initialize(card_counts_storage); |
ysr@777 | 86 | } |
ysr@777 | 87 | |
iveresov@1229 | 88 | void ConcurrentG1Refine::stop() { |
iveresov@1229 | 89 | if (_threads != NULL) { |
vkempik@6552 | 90 | for (uint i = 0; i < _n_threads; i++) { |
iveresov@1229 | 91 | _threads[i]->stop(); |
iveresov@1229 | 92 | } |
iveresov@1229 | 93 | } |
iveresov@1229 | 94 | } |
iveresov@1229 | 95 | |
iveresov@1546 | 96 | void ConcurrentG1Refine::reinitialize_threads() { |
iveresov@1546 | 97 | reset_threshold_step(); |
iveresov@1546 | 98 | if (_threads != NULL) { |
vkempik@6552 | 99 | for (uint i = 0; i < _n_threads; i++) { |
iveresov@1546 | 100 | _threads[i]->initialize(); |
iveresov@1546 | 101 | } |
iveresov@1546 | 102 | } |
iveresov@1546 | 103 | } |
iveresov@1546 | 104 | |
ysr@777 | 105 | ConcurrentG1Refine::~ConcurrentG1Refine() { |
iveresov@1229 | 106 | if (_threads != NULL) { |
vkempik@6552 | 107 | for (uint i = 0; i < _n_threads; i++) { |
iveresov@1229 | 108 | delete _threads[i]; |
iveresov@1229 | 109 | } |
zgu@3900 | 110 | FREE_C_HEAP_ARRAY(ConcurrentG1RefineThread*, _threads, mtGC); |
ysr@777 | 111 | } |
ysr@777 | 112 | } |
ysr@777 | 113 | |
iveresov@1229 | 114 | void ConcurrentG1Refine::threads_do(ThreadClosure *tc) { |
iveresov@1229 | 115 | if (_threads != NULL) { |
vkempik@6552 | 116 | for (uint i = 0; i < _n_threads; i++) { |
iveresov@1229 | 117 | tc->do_thread(_threads[i]); |
iveresov@1229 | 118 | } |
ysr@777 | 119 | } |
ysr@777 | 120 | } |
ysr@777 | 121 | |
tschatzl@5204 | 122 | void ConcurrentG1Refine::worker_threads_do(ThreadClosure * tc) { |
tschatzl@5204 | 123 | if (_threads != NULL) { |
vkempik@6552 | 124 | for (uint i = 0; i < worker_thread_num(); i++) { |
tschatzl@5204 | 125 | tc->do_thread(_threads[i]); |
tschatzl@5204 | 126 | } |
tschatzl@5204 | 127 | } |
tschatzl@5204 | 128 | } |
tschatzl@5204 | 129 | |
vkempik@6552 | 130 | uint ConcurrentG1Refine::thread_num() { |
jwilhelm@7219 | 131 | return G1ConcRefinementThreads; |
ysr@777 | 132 | } |
tonyp@1454 | 133 | |
tonyp@1454 | 134 | void ConcurrentG1Refine::print_worker_threads_on(outputStream* st) const { |
vkempik@6552 | 135 | for (uint i = 0; i < _n_threads; ++i) { |
tonyp@1454 | 136 | _threads[i]->print_on(st); |
tonyp@1454 | 137 | st->cr(); |
tonyp@1454 | 138 | } |
tonyp@1454 | 139 | } |
tschatzl@5204 | 140 | |
tschatzl@5204 | 141 | ConcurrentG1RefineThread * ConcurrentG1Refine::sampling_thread() const { |
tschatzl@5204 | 142 | return _threads[worker_thread_num()]; |
tschatzl@5204 | 143 | } |