1 /* |
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2 * Copyright (c) 2007, 2019, 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 #ifndef SHARE_GC_CMS_PAROOPCLOSURES_HPP |
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26 #define SHARE_GC_CMS_PAROOPCLOSURES_HPP |
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27 |
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28 #include "gc/shared/genOopClosures.hpp" |
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29 #include "gc/shared/taskqueue.hpp" |
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30 #include "memory/padded.hpp" |
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31 |
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32 // Closures for ParNewGeneration |
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33 |
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34 class ParScanThreadState; |
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35 class ParNewGeneration; |
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36 typedef Padded<OopTaskQueue> ObjToScanQueue; |
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37 typedef GenericTaskQueueSet<ObjToScanQueue, mtGC> ObjToScanQueueSet; |
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38 class ParallelTaskTerminator; |
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39 |
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40 class ParScanClosure: public OopsInClassLoaderDataOrGenClosure { |
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41 protected: |
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42 ParScanThreadState* _par_scan_state; |
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43 ParNewGeneration* _g; |
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44 HeapWord* _boundary; |
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45 template <class T> void inline par_do_barrier(T* p); |
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46 template <class T> void inline do_oop_work(T* p, |
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47 bool gc_barrier, |
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48 bool root_scan); |
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49 public: |
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50 ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state); |
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51 }; |
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52 |
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53 class ParScanWithBarrierClosure: public ParScanClosure { |
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54 public: |
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55 ParScanWithBarrierClosure(ParNewGeneration* g, |
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56 ParScanThreadState* par_scan_state) : |
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57 ParScanClosure(g, par_scan_state) {} |
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58 virtual void do_oop(oop* p); |
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59 virtual void do_oop(narrowOop* p); |
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60 }; |
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61 |
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62 class ParScanWithoutBarrierClosure: public ParScanClosure { |
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63 public: |
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64 ParScanWithoutBarrierClosure(ParNewGeneration* g, |
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65 ParScanThreadState* par_scan_state) : |
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66 ParScanClosure(g, par_scan_state) {} |
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67 virtual void do_oop(oop* p); |
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68 virtual void do_oop(narrowOop* p); |
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69 }; |
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70 |
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71 class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure { |
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72 public: |
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73 ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g, |
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74 ParScanThreadState* par_scan_state) : |
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75 ParScanClosure(g, par_scan_state) {} |
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76 virtual void do_oop(oop* p); |
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77 virtual void do_oop(narrowOop* p); |
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78 }; |
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79 |
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80 class ParRootScanWithoutBarrierClosure: public ParScanClosure { |
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81 public: |
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82 ParRootScanWithoutBarrierClosure(ParNewGeneration* g, |
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83 ParScanThreadState* par_scan_state) : |
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84 ParScanClosure(g, par_scan_state) {} |
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85 virtual void do_oop(oop* p); |
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86 virtual void do_oop(narrowOop* p); |
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87 }; |
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88 |
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89 class ParScanWeakRefClosure: public ScanWeakRefClosure { |
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90 protected: |
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91 ParScanThreadState* _par_scan_state; |
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92 template <class T> inline void do_oop_work(T* p); |
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93 public: |
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94 ParScanWeakRefClosure(ParNewGeneration* g, |
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95 ParScanThreadState* par_scan_state); |
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96 virtual void do_oop(oop* p); |
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97 virtual void do_oop(narrowOop* p); |
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98 }; |
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99 |
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100 class ParEvacuateFollowersClosure: public VoidClosure { |
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101 private: |
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102 ParScanThreadState* _par_scan_state; |
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103 ParScanThreadState* par_scan_state() { return _par_scan_state; } |
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104 |
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105 // We want to preserve the specific types here (rather than "OopClosure") |
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106 // for later de-virtualization of do_oop calls. |
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107 ParScanWithoutBarrierClosure* _to_space_closure; |
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108 ParScanWithoutBarrierClosure* to_space_closure() { |
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109 return _to_space_closure; |
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110 } |
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111 ParRootScanWithoutBarrierClosure* _to_space_root_closure; |
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112 ParRootScanWithoutBarrierClosure* to_space_root_closure() { |
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113 return _to_space_root_closure; |
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114 } |
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115 |
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116 ParScanWithBarrierClosure* _old_gen_closure; |
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117 ParScanWithBarrierClosure* old_gen_closure () { |
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118 return _old_gen_closure; |
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119 } |
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120 ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure; |
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121 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () { |
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122 return _old_gen_root_closure; |
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123 } |
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124 |
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125 ParNewGeneration* _par_gen; |
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126 ParNewGeneration* par_gen() { return _par_gen; } |
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127 |
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128 ObjToScanQueueSet* _task_queues; |
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129 ObjToScanQueueSet* task_queues() { return _task_queues; } |
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130 |
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131 ParallelTaskTerminator* _terminator; |
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132 ParallelTaskTerminator* terminator() { return _terminator; } |
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133 public: |
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134 ParEvacuateFollowersClosure( |
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135 ParScanThreadState* par_scan_state_, |
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136 ParScanWithoutBarrierClosure* to_space_closure_, |
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137 ParScanWithBarrierClosure* old_gen_closure_, |
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138 ParRootScanWithoutBarrierClosure* to_space_root_closure_, |
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139 ParNewGeneration* par_gen_, |
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140 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_, |
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141 ObjToScanQueueSet* task_queues_, |
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142 ParallelTaskTerminator* terminator_); |
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143 virtual void do_void(); |
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144 }; |
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145 |
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146 #endif // SHARE_GC_CMS_PAROOPCLOSURES_HPP |
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