Mercurial > hg > graal-compiler
annotate src/share/vm/services/g1MemoryPool.cpp @ 1092:ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
Summary: G1 reports committed memory instead of reserved memory from the Runtime.maxMemory() method
Reviewed-by: ysr, jmasa
| author | tonyp |
|---|---|
| date | Fri, 04 Dec 2009 07:44:35 -0500 |
| parents | db0d5eba9d20 |
| children | afc30fccf324 |
| rev | line source |
|---|---|
| 1089 | 1 /* |
| 2 * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved. | |
| 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_g1MemoryPool.cpp.incl" | |
| 27 | |
| 28 G1MemoryPoolSuper::G1MemoryPoolSuper(G1CollectedHeap* g1h, | |
| 29 const char* name, | |
| 30 size_t init_size, | |
| 31 size_t max_size, | |
| 32 bool support_usage_threshold) : | |
| 33 _g1h(g1h), CollectedMemoryPool(name, | |
| 34 MemoryPool::Heap, | |
| 35 init_size, | |
| 36 max_size, | |
| 37 support_usage_threshold) { | |
| 38 assert(UseG1GC, "sanity"); | |
| 39 } | |
| 40 | |
| 41 // See the comment at the top of g1MemoryPool.hpp | |
| 42 size_t G1MemoryPoolSuper::eden_space_committed(G1CollectedHeap* g1h) { | |
| 43 return eden_space_used(g1h); | |
| 44 } | |
| 45 | |
| 46 // See the comment at the top of g1MemoryPool.hpp | |
| 47 size_t G1MemoryPoolSuper::eden_space_used(G1CollectedHeap* g1h) { | |
| 48 size_t young_list_length = g1h->young_list_length(); | |
| 49 size_t eden_used = young_list_length * HeapRegion::GrainBytes; | |
| 50 size_t survivor_used = survivor_space_used(g1h); | |
| 51 eden_used = subtract_up_to_zero(eden_used, survivor_used); | |
| 52 return eden_used; | |
| 53 } | |
| 54 | |
| 55 // See the comment at the top of g1MemoryPool.hpp | |
| 56 size_t G1MemoryPoolSuper::eden_space_max(G1CollectedHeap* g1h) { | |
| 57 return eden_space_committed(g1h); | |
| 58 } | |
| 59 | |
| 60 // See the comment at the top of g1MemoryPool.hpp | |
| 61 size_t G1MemoryPoolSuper::survivor_space_committed(G1CollectedHeap* g1h) { | |
| 62 return survivor_space_used(g1h); | |
| 63 } | |
| 64 | |
| 65 // See the comment at the top of g1MemoryPool.hpp | |
| 66 size_t G1MemoryPoolSuper::survivor_space_used(G1CollectedHeap* g1h) { | |
| 67 size_t survivor_num = g1h->g1_policy()->recorded_survivor_regions(); | |
| 68 size_t survivor_used = survivor_num * HeapRegion::GrainBytes; | |
| 69 return survivor_used; | |
| 70 } | |
| 71 | |
| 72 // See the comment at the top of g1MemoryPool.hpp | |
| 73 size_t G1MemoryPoolSuper::survivor_space_max(G1CollectedHeap* g1h) { | |
| 74 return survivor_space_committed(g1h); | |
| 75 } | |
| 76 | |
| 77 // See the comment at the top of g1MemoryPool.hpp | |
| 78 size_t G1MemoryPoolSuper::old_space_committed(G1CollectedHeap* g1h) { | |
| 79 size_t committed = overall_committed(g1h); | |
| 80 size_t eden_committed = eden_space_committed(g1h); | |
| 81 size_t survivor_committed = survivor_space_committed(g1h); | |
| 82 committed = subtract_up_to_zero(committed, eden_committed); | |
| 83 committed = subtract_up_to_zero(committed, survivor_committed); | |
| 84 return committed; | |
| 85 } | |
| 86 | |
| 87 // See the comment at the top of g1MemoryPool.hpp | |
| 88 size_t G1MemoryPoolSuper::old_space_used(G1CollectedHeap* g1h) { | |
| 89 size_t used = overall_used(g1h); | |
| 90 size_t eden_used = eden_space_used(g1h); | |
| 91 size_t survivor_used = survivor_space_used(g1h); | |
| 92 used = subtract_up_to_zero(used, eden_used); | |
| 93 used = subtract_up_to_zero(used, survivor_used); | |
| 94 return used; | |
| 95 } | |
| 96 | |
| 97 // See the comment at the top of g1MemoryPool.hpp | |
| 98 size_t G1MemoryPoolSuper::old_space_max(G1CollectedHeap* g1h) { | |
|
1092
ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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99 size_t max = overall_max(g1h); |
| 1089 | 100 size_t eden_max = eden_space_max(g1h); |
| 101 size_t survivor_max = survivor_space_max(g1h); | |
| 102 max = subtract_up_to_zero(max, eden_max); | |
| 103 max = subtract_up_to_zero(max, survivor_max); | |
| 104 return max; | |
| 105 } | |
| 106 | |
| 107 G1EdenPool::G1EdenPool(G1CollectedHeap* g1h) : | |
| 108 G1MemoryPoolSuper(g1h, | |
| 109 "G1 Eden", | |
| 110 eden_space_committed(g1h), /* init_size */ | |
| 111 eden_space_max(g1h), /* max_size */ | |
| 112 false /* support_usage_threshold */) { | |
| 113 } | |
| 114 | |
| 115 MemoryUsage G1EdenPool::get_memory_usage() { | |
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6880903: G1: G1 reports incorrect Runtime.maxMemory()
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116 size_t initial_sz = initial_size(); |
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6880903: G1: G1 reports incorrect Runtime.maxMemory()
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117 size_t max_sz = max_size(); |
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118 size_t used = used_in_bytes(); |
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6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
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119 size_t committed = eden_space_committed(); |
| 1089 | 120 |
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1092
ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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121 return MemoryUsage(initial_sz, used, committed, max_sz); |
| 1089 | 122 } |
| 123 | |
| 124 G1SurvivorPool::G1SurvivorPool(G1CollectedHeap* g1h) : | |
| 125 G1MemoryPoolSuper(g1h, | |
| 126 "G1 Survivor", | |
| 127 survivor_space_committed(g1h), /* init_size */ | |
| 128 survivor_space_max(g1h), /* max_size */ | |
| 129 false /* support_usage_threshold */) { | |
| 130 } | |
| 131 | |
| 132 MemoryUsage G1SurvivorPool::get_memory_usage() { | |
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1092
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6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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133 size_t initial_sz = initial_size(); |
|
ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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134 size_t max_sz = max_size(); |
|
ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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135 size_t used = used_in_bytes(); |
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ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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136 size_t committed = survivor_space_committed(); |
| 1089 | 137 |
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1092
ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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138 return MemoryUsage(initial_sz, used, committed, max_sz); |
| 1089 | 139 } |
| 140 | |
| 141 G1OldGenPool::G1OldGenPool(G1CollectedHeap* g1h) : | |
| 142 G1MemoryPoolSuper(g1h, | |
| 143 "G1 Old Gen", | |
| 144 old_space_committed(g1h), /* init_size */ | |
| 145 old_space_max(g1h), /* max_size */ | |
| 146 true /* support_usage_threshold */) { | |
| 147 } | |
| 148 | |
| 149 MemoryUsage G1OldGenPool::get_memory_usage() { | |
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1092
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6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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150 size_t initial_sz = initial_size(); |
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ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
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151 size_t max_sz = max_size(); |
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ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
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152 size_t used = used_in_bytes(); |
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ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
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153 size_t committed = old_space_committed(); |
| 1089 | 154 |
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1092
ed52bcc32739
6880903: G1: G1 reports incorrect Runtime.maxMemory()
tonyp
parents:
1089
diff
changeset
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155 return MemoryUsage(initial_sz, used, committed, max_sz); |
| 1089 | 156 } |