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annotate src/share/vm/gc_implementation/parNew/parOopClosures.hpp @ 1665:a93a9eda13f7

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6962947: shared TaskQueue statistics Reviewed-by: tonyp, ysr
author jcoomes
date Fri, 16 Jul 2010 21:33:21 -0700
parents c18cbe5936b8
children f95d63e2154a
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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 // Closures for ParNewGeneration
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26
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27 class ParScanThreadState;
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28 class ParNewGeneration;
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29 typedef Padded<OopTaskQueue> ObjToScanQueue;
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30 typedef GenericTaskQueueSet<ObjToScanQueue> ObjToScanQueueSet;
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31 class ParallelTaskTerminator;
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32
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33 class ParScanClosure: public OopsInGenClosure {
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34 protected:
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35 ParScanThreadState* _par_scan_state;
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36 ParNewGeneration* _g;
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37 HeapWord* _boundary;
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38 template <class T> void inline par_do_barrier(T* p);
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39 template <class T> void inline do_oop_work(T* p,
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40 bool gc_barrier,
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41 bool root_scan);
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42 public:
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43 ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state);
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44 };
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45
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46 class ParScanWithBarrierClosure: public ParScanClosure {
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47 public:
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48 ParScanWithBarrierClosure(ParNewGeneration* g,
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49 ParScanThreadState* par_scan_state) :
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50 ParScanClosure(g, par_scan_state) {}
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51 virtual void do_oop(oop* p);
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52 virtual void do_oop(narrowOop* p);
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53 inline void do_oop_nv(oop* p);
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54 inline void do_oop_nv(narrowOop* p);
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55 };
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56
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57 class ParScanWithoutBarrierClosure: public ParScanClosure {
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58 public:
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59 ParScanWithoutBarrierClosure(ParNewGeneration* g,
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60 ParScanThreadState* par_scan_state) :
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61 ParScanClosure(g, par_scan_state) {}
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62 virtual void do_oop(oop* p);
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63 virtual void do_oop(narrowOop* p);
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64 inline void do_oop_nv(oop* p);
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65 inline void do_oop_nv(narrowOop* p);
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66 };
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67
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68 class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure {
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69 public:
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70 ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g,
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71 ParScanThreadState* par_scan_state) :
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72 ParScanClosure(g, par_scan_state) {}
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73 virtual void do_oop(oop* p);
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74 virtual void do_oop(narrowOop* p);
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75 };
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76
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77 class ParRootScanWithoutBarrierClosure: public ParScanClosure {
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78 public:
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79 ParRootScanWithoutBarrierClosure(ParNewGeneration* g,
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80 ParScanThreadState* par_scan_state) :
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81 ParScanClosure(g, par_scan_state) {}
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82 virtual void do_oop(oop* p);
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83 virtual void do_oop(narrowOop* p);
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84 };
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85
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86 class ParScanWeakRefClosure: public ScanWeakRefClosure {
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87 protected:
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88 ParScanThreadState* _par_scan_state;
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89 template <class T> inline void do_oop_work(T* p);
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90 public:
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91 ParScanWeakRefClosure(ParNewGeneration* g,
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92 ParScanThreadState* par_scan_state);
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93 virtual void do_oop(oop* p);
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94 virtual void do_oop(narrowOop* p);
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95 inline void do_oop_nv(oop* p);
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96 inline void do_oop_nv(narrowOop* p);
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97 };
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98
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99 class ParEvacuateFollowersClosure: public VoidClosure {
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100 private:
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101 ParScanThreadState* _par_scan_state;
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102 ParScanThreadState* par_scan_state() { return _par_scan_state; }
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103
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104 // We want to preserve the specific types here (rather than "OopClosure")
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105 // for later de-virtualization of do_oop calls.
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106 ParScanWithoutBarrierClosure* _to_space_closure;
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107 ParScanWithoutBarrierClosure* to_space_closure() {
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108 return _to_space_closure;
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109 }
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110 ParRootScanWithoutBarrierClosure* _to_space_root_closure;
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111 ParRootScanWithoutBarrierClosure* to_space_root_closure() {
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112 return _to_space_root_closure;
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113 }
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114
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115 ParScanWithBarrierClosure* _old_gen_closure;
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116 ParScanWithBarrierClosure* old_gen_closure () {
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117 return _old_gen_closure;
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118 }
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119 ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure;
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120 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () {
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121 return _old_gen_root_closure;
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122 }
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123
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124 ParNewGeneration* _par_gen;
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125 ParNewGeneration* par_gen() { return _par_gen; }
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126
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127 ObjToScanQueueSet* _task_queues;
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128 ObjToScanQueueSet* task_queues() { return _task_queues; }
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129
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130 ParallelTaskTerminator* _terminator;
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131 ParallelTaskTerminator* terminator() { return _terminator; }
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132 public:
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133 ParEvacuateFollowersClosure(
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134 ParScanThreadState* par_scan_state_,
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135 ParScanWithoutBarrierClosure* to_space_closure_,
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136 ParScanWithBarrierClosure* old_gen_closure_,
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137 ParRootScanWithoutBarrierClosure* to_space_root_closure_,
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138 ParNewGeneration* par_gen_,
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139 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_,
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140 ObjToScanQueueSet* task_queues_,
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141 ParallelTaskTerminator* terminator_);
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142 virtual void do_void();
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143 };