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annotate src/share/vm/services/g1MemoryPool.cpp @ 2177:3582bf76420e

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6990754: Use native memory and reference counting to implement SymbolTable Summary: move symbols from permgen into C heap and reference count them Reviewed-by: never, acorn, jmasa, stefank
author coleenp
date Thu, 27 Jan 2011 16:11:27 -0800
parents f95d63e2154a
children b52782ae3880
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "gc_implementation/g1/g1CollectedHeap.hpp"
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27 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
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28 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
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29 #include "gc_implementation/g1/heapRegion.hpp"
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30 #include "services/g1MemoryPool.hpp"
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31
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32 G1MemoryPoolSuper::G1MemoryPoolSuper(G1CollectedHeap* g1h,
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33 const char* name,
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34 size_t init_size,
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35 bool support_usage_threshold) :
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36 _g1h(g1h), CollectedMemoryPool(name,
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37 MemoryPool::Heap,
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38 init_size,
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39 undefined_max(),
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40 support_usage_threshold) {
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41 assert(UseG1GC, "sanity");
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42 }
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43
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44 // See the comment at the top of g1MemoryPool.hpp
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45 size_t G1MemoryPoolSuper::eden_space_committed(G1CollectedHeap* g1h) {
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46 return MAX2(eden_space_used(g1h), (size_t) HeapRegion::GrainBytes);
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47 }
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48
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49 // See the comment at the top of g1MemoryPool.hpp
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50 size_t G1MemoryPoolSuper::eden_space_used(G1CollectedHeap* g1h) {
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51 size_t young_list_length = g1h->young_list()->length();
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52 size_t eden_used = young_list_length * HeapRegion::GrainBytes;
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53 size_t survivor_used = survivor_space_used(g1h);
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54 eden_used = subtract_up_to_zero(eden_used, survivor_used);
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55 return eden_used;
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56 }
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57
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58 // See the comment at the top of g1MemoryPool.hpp
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59 size_t G1MemoryPoolSuper::survivor_space_committed(G1CollectedHeap* g1h) {
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60 return MAX2(survivor_space_used(g1h), (size_t) HeapRegion::GrainBytes);
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61 }
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62
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63 // See the comment at the top of g1MemoryPool.hpp
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64 size_t G1MemoryPoolSuper::survivor_space_used(G1CollectedHeap* g1h) {
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65 size_t survivor_num = g1h->g1_policy()->recorded_survivor_regions();
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66 size_t survivor_used = survivor_num * HeapRegion::GrainBytes;
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67 return survivor_used;
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68 }
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69
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70 // See the comment at the top of g1MemoryPool.hpp
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71 size_t G1MemoryPoolSuper::old_space_committed(G1CollectedHeap* g1h) {
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72 size_t committed = overall_committed(g1h);
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73 size_t eden_committed = eden_space_committed(g1h);
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74 size_t survivor_committed = survivor_space_committed(g1h);
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75 committed = subtract_up_to_zero(committed, eden_committed);
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76 committed = subtract_up_to_zero(committed, survivor_committed);
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77 committed = MAX2(committed, (size_t) HeapRegion::GrainBytes);
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78 return committed;
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79 }
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80
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81 // See the comment at the top of g1MemoryPool.hpp
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82 size_t G1MemoryPoolSuper::old_space_used(G1CollectedHeap* g1h) {
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83 size_t used = overall_used(g1h);
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84 size_t eden_used = eden_space_used(g1h);
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85 size_t survivor_used = survivor_space_used(g1h);
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86 used = subtract_up_to_zero(used, eden_used);
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87 used = subtract_up_to_zero(used, survivor_used);
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88 return used;
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89 }
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90
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91 G1EdenPool::G1EdenPool(G1CollectedHeap* g1h) :
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92 G1MemoryPoolSuper(g1h,
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93 "G1 Eden",
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94 eden_space_committed(g1h), /* init_size */
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95 false /* support_usage_threshold */) { }
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96
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97 MemoryUsage G1EdenPool::get_memory_usage() {
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98 size_t initial_sz = initial_size();
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99 size_t max_sz = max_size();
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100 size_t used = used_in_bytes();
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101 size_t committed = eden_space_committed(_g1h);
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102
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103 return MemoryUsage(initial_sz, used, committed, max_sz);
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104 }
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105
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106 G1SurvivorPool::G1SurvivorPool(G1CollectedHeap* g1h) :
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107 G1MemoryPoolSuper(g1h,
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108 "G1 Survivor",
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109 survivor_space_committed(g1h), /* init_size */
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110 false /* support_usage_threshold */) { }
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111
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112 MemoryUsage G1SurvivorPool::get_memory_usage() {
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113 size_t initial_sz = initial_size();
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114 size_t max_sz = max_size();
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115 size_t used = used_in_bytes();
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116 size_t committed = survivor_space_committed(_g1h);
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117
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118 return MemoryUsage(initial_sz, used, committed, max_sz);
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119 }
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120
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121 G1OldGenPool::G1OldGenPool(G1CollectedHeap* g1h) :
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122 G1MemoryPoolSuper(g1h,
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123 "G1 Old Gen",
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124 old_space_committed(g1h), /* init_size */
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125 true /* support_usage_threshold */) { }
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126
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127 MemoryUsage G1OldGenPool::get_memory_usage() {
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128 size_t initial_sz = initial_size();
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129 size_t max_sz = max_size();
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130 size_t used = used_in_bytes();
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131 size_t committed = old_space_committed(_g1h);
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132
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133 return MemoryUsage(initial_sz, used, committed, max_sz);
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134 }