Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp @ 10372:e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
Summary: Fixed the output of G1SummarizeRSetStats: too small datatype for the number of concurrently processed cards, added concurrent remembered set thread time retrieval for Linux and Windows (BSD uses os::elapsedTime() now), and other cleanup. The information presented during VM operation is now relative to the previous output, not always cumulative if G1SummarizeRSetStatsPeriod > 0. At VM exit, the code prints a cumulative summary.
Reviewed-by: johnc, jwilhelm
| author | tschatzl |
|---|---|
| date | Tue, 28 May 2013 09:32:06 +0200 |
| parents | 194f52aa2f23 |
| children | 1de8e5356754 |
| rev | line source |
|---|---|
| 342 | 1 /* |
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2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
| 342 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 342 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "gc_implementation/g1/concurrentG1Refine.hpp" | |
| 27 #include "gc_implementation/g1/concurrentG1RefineThread.hpp" | |
| 28 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
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29 #include "gc_implementation/g1/g1HotCardCache.hpp" |
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30 |
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31 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) : |
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32 _threads(NULL), _n_threads(0), |
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33 _hot_card_cache(g1h) |
| 342 | 34 { |
| 1111 | 35 // Ergomonically select initial concurrent refinement parameters |
| 1282 | 36 if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) { |
| 37 FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, MAX2<int>(ParallelGCThreads, 1)); | |
| 1111 | 38 } |
| 1282 | 39 set_green_zone(G1ConcRefinementGreenZone); |
| 1111 | 40 |
| 1282 | 41 if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) { |
| 42 FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3); | |
| 1111 | 43 } |
| 1282 | 44 set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone())); |
| 1111 | 45 |
| 1282 | 46 if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) { |
| 47 FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2); | |
| 1111 | 48 } |
| 1282 | 49 set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone())); |
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50 |
| 1111 | 51 _n_worker_threads = thread_num(); |
| 52 // We need one extra thread to do the young gen rset size sampling. | |
| 53 _n_threads = _n_worker_threads + 1; | |
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54 |
| 1111 | 55 reset_threshold_step(); |
| 56 | |
| 6197 | 57 _threads = NEW_C_HEAP_ARRAY(ConcurrentG1RefineThread*, _n_threads, mtGC); |
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58 |
| 1111 | 59 int worker_id_offset = (int)DirtyCardQueueSet::num_par_ids(); |
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60 |
| 1111 | 61 ConcurrentG1RefineThread *next = NULL; |
| 62 for (int i = _n_threads - 1; i >= 0; i--) { | |
| 63 ConcurrentG1RefineThread* t = new ConcurrentG1RefineThread(this, next, worker_id_offset, i); | |
| 64 assert(t != NULL, "Conc refine should have been created"); | |
| 65 assert(t->cg1r() == this, "Conc refine thread should refer to this"); | |
| 66 _threads[i] = t; | |
| 67 next = t; | |
| 342 | 68 } |
| 69 } | |
| 70 | |
| 1111 | 71 void ConcurrentG1Refine::reset_threshold_step() { |
| 1282 | 72 if (FLAG_IS_DEFAULT(G1ConcRefinementThresholdStep)) { |
| 1111 | 73 _thread_threshold_step = (yellow_zone() - green_zone()) / (worker_thread_num() + 1); |
| 74 } else { | |
| 1282 | 75 _thread_threshold_step = G1ConcRefinementThresholdStep; |
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76 } |
| 1111 | 77 } |
| 78 | |
| 342 | 79 void ConcurrentG1Refine::init() { |
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80 _hot_card_cache.initialize(); |
| 342 | 81 } |
| 82 | |
| 794 | 83 void ConcurrentG1Refine::stop() { |
| 84 if (_threads != NULL) { | |
| 85 for (int i = 0; i < _n_threads; i++) { | |
| 86 _threads[i]->stop(); | |
| 87 } | |
| 88 } | |
| 89 } | |
| 90 | |
| 1111 | 91 void ConcurrentG1Refine::reinitialize_threads() { |
| 92 reset_threshold_step(); | |
| 93 if (_threads != NULL) { | |
| 94 for (int i = 0; i < _n_threads; i++) { | |
| 95 _threads[i]->initialize(); | |
| 96 } | |
| 97 } | |
| 98 } | |
| 99 | |
| 342 | 100 ConcurrentG1Refine::~ConcurrentG1Refine() { |
| 794 | 101 if (_threads != NULL) { |
| 102 for (int i = 0; i < _n_threads; i++) { | |
| 103 delete _threads[i]; | |
| 104 } | |
| 6197 | 105 FREE_C_HEAP_ARRAY(ConcurrentG1RefineThread*, _threads, mtGC); |
| 342 | 106 } |
| 107 } | |
| 108 | |
| 794 | 109 void ConcurrentG1Refine::threads_do(ThreadClosure *tc) { |
| 110 if (_threads != NULL) { | |
| 111 for (int i = 0; i < _n_threads; i++) { | |
| 112 tc->do_thread(_threads[i]); | |
| 113 } | |
| 342 | 114 } |
| 115 } | |
| 116 | |
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117 void ConcurrentG1Refine::worker_threads_do(ThreadClosure * tc) { |
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118 if (_threads != NULL) { |
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119 for (int i = 0; i < worker_thread_num(); i++) { |
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120 tc->do_thread(_threads[i]); |
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121 } |
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122 } |
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123 } |
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124 |
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125 int ConcurrentG1Refine::thread_num() { |
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126 int n_threads = (G1ConcRefinementThreads > 0) ? G1ConcRefinementThreads |
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127 : ParallelGCThreads; |
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128 return MAX2<int>(n_threads, 1); |
| 342 | 129 } |
| 1019 | 130 |
| 131 void ConcurrentG1Refine::print_worker_threads_on(outputStream* st) const { | |
| 132 for (int i = 0; i < _n_threads; ++i) { | |
| 133 _threads[i]->print_on(st); | |
| 134 st->cr(); | |
| 135 } | |
| 136 } | |
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137 |
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138 ConcurrentG1RefineThread * ConcurrentG1Refine::sampling_thread() const { |
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139 return _threads[worker_thread_num()]; |
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140 } |