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annotate src/share/vm/gc_implementation/parNew/parOopClosures.hpp @ 1552:c18cbe5936b8

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6941466: Oracle rebranding changes for Hotspot repositories Summary: Change all the Sun copyrights to Oracle copyright Reviewed-by: ohair
author trims
date Thu, 27 May 2010 19:08:38 -0700
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1 /*
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2 * Copyright (c) 2007, 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 OopTaskQueueSet ObjToScanQueueSet;
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30 class ParallelTaskTerminator;
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31
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32 class ParScanClosure: public OopsInGenClosure {
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33 protected:
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34 ParScanThreadState* _par_scan_state;
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35 ParNewGeneration* _g;
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36 HeapWord* _boundary;
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37 template <class T> void inline par_do_barrier(T* p);
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38 template <class T> void inline do_oop_work(T* p,
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39 bool gc_barrier,
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40 bool root_scan);
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41 public:
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42 ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state);
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43 };
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44
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45 class ParScanWithBarrierClosure: public ParScanClosure {
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46 public:
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47 ParScanWithBarrierClosure(ParNewGeneration* g,
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48 ParScanThreadState* par_scan_state) :
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49 ParScanClosure(g, par_scan_state) {}
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50 virtual void do_oop(oop* p);
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51 virtual void do_oop(narrowOop* p);
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52 inline void do_oop_nv(oop* p);
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53 inline void do_oop_nv(narrowOop* p);
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54 };
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55
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56 class ParScanWithoutBarrierClosure: public ParScanClosure {
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57 public:
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58 ParScanWithoutBarrierClosure(ParNewGeneration* g,
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59 ParScanThreadState* par_scan_state) :
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60 ParScanClosure(g, par_scan_state) {}
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61 virtual void do_oop(oop* p);
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62 virtual void do_oop(narrowOop* p);
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63 inline void do_oop_nv(oop* p);
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64 inline void do_oop_nv(narrowOop* p);
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65 };
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67 class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure {
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68 public:
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69 ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g,
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70 ParScanThreadState* par_scan_state) :
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71 ParScanClosure(g, par_scan_state) {}
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72 virtual void do_oop(oop* p);
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73 virtual void do_oop(narrowOop* p);
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74 };
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75
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76 class ParRootScanWithoutBarrierClosure: public ParScanClosure {
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77 public:
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78 ParRootScanWithoutBarrierClosure(ParNewGeneration* g,
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79 ParScanThreadState* par_scan_state) :
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80 ParScanClosure(g, par_scan_state) {}
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81 virtual void do_oop(oop* p);
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82 virtual void do_oop(narrowOop* p);
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83 };
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84
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85 class ParScanWeakRefClosure: public ScanWeakRefClosure {
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86 protected:
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87 ParScanThreadState* _par_scan_state;
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88 template <class T> inline void do_oop_work(T* p);
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89 public:
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90 ParScanWeakRefClosure(ParNewGeneration* g,
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91 ParScanThreadState* par_scan_state);
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92 virtual void do_oop(oop* p);
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93 virtual void do_oop(narrowOop* p);
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94 inline void do_oop_nv(oop* p);
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95 inline void do_oop_nv(narrowOop* p);
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96 };
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97
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98 class ParEvacuateFollowersClosure: public VoidClosure {
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99 private:
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100 ParScanThreadState* _par_scan_state;
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101 ParScanThreadState* par_scan_state() { return _par_scan_state; }
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102
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103 // We want to preserve the specific types here (rather than "OopClosure")
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104 // for later de-virtualization of do_oop calls.
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105 ParScanWithoutBarrierClosure* _to_space_closure;
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106 ParScanWithoutBarrierClosure* to_space_closure() {
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107 return _to_space_closure;
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108 }
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109 ParRootScanWithoutBarrierClosure* _to_space_root_closure;
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110 ParRootScanWithoutBarrierClosure* to_space_root_closure() {
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111 return _to_space_root_closure;
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112 }
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113
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114 ParScanWithBarrierClosure* _old_gen_closure;
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115 ParScanWithBarrierClosure* old_gen_closure () {
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116 return _old_gen_closure;
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117 }
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118 ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure;
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119 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () {
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120 return _old_gen_root_closure;
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121 }
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122
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123 ParNewGeneration* _par_gen;
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124 ParNewGeneration* par_gen() { return _par_gen; }
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125
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126 ObjToScanQueueSet* _task_queues;
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127 ObjToScanQueueSet* task_queues() { return _task_queues; }
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128
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129 ParallelTaskTerminator* _terminator;
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130 ParallelTaskTerminator* terminator() { return _terminator; }
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131 public:
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132 ParEvacuateFollowersClosure(
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133 ParScanThreadState* par_scan_state_,
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134 ParScanWithoutBarrierClosure* to_space_closure_,
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135 ParScanWithBarrierClosure* old_gen_closure_,
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136 ParRootScanWithoutBarrierClosure* to_space_root_closure_,
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137 ParNewGeneration* par_gen_,
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138 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_,
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139 ObjToScanQueueSet* task_queues_,
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140 ParallelTaskTerminator* terminator_);
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141 virtual void do_void();
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142 };