1 #ifdef USE_PRAGMA_IDENT_HDR 2 #pragma ident "@(#)parOopClosures.hpp 1.2 07/06/22 16:49:48 JVM" 3 #endif 4 /* 5 * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved. 6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 7 * 8 * This code is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License version 2 only, as 10 * published by the Free Software Foundation. 11 * 12 * This code is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 * version 2 for more details (a copy is included in the LICENSE file that 16 * accompanied this code). 17 * 18 * You should have received a copy of the GNU General Public License version 19 * 2 along with this work; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 23 * CA 95054 USA or visit www.sun.com if you need additional information or 24 * have any questions. 25 * 26 */ 27 28 // Closures for ParNewGeneration 29 30 class ParScanThreadState; 31 class ParNewGeneration; 32 typedef OopTaskQueueSet ObjToScanQueueSet; 33 class ParallelTaskTerminator; 34 35 class ParScanClosure: public OopsInGenClosure { 36 protected: 37 ParScanThreadState* _par_scan_state; 38 ParNewGeneration* _g; 39 HeapWord* _boundary; 40 template <class T> void inline par_do_barrier(T* p); 41 template <class T> void inline do_oop_work(T* p, 42 bool gc_barrier, 43 bool root_scan); 44 public: 45 ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state); 46 }; 47 48 class ParScanWithBarrierClosure: public ParScanClosure { 49 public: 50 ParScanWithBarrierClosure(ParNewGeneration* g, 51 ParScanThreadState* par_scan_state) : 52 ParScanClosure(g, par_scan_state) {} 53 virtual void do_oop(oop* p); 54 virtual void do_oop(narrowOop* p); 55 inline void do_oop_nv(oop* p); 56 inline void do_oop_nv(narrowOop* p); 57 }; 58 59 class ParScanWithoutBarrierClosure: public ParScanClosure { 60 public: 61 ParScanWithoutBarrierClosure(ParNewGeneration* g, 62 ParScanThreadState* par_scan_state) : 63 ParScanClosure(g, par_scan_state) {} 64 virtual void do_oop(oop* p); 65 virtual void do_oop(narrowOop* p); 66 inline void do_oop_nv(oop* p); 67 inline void do_oop_nv(narrowOop* p); 68 }; 69 70 class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure { 71 public: 72 ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g, 73 ParScanThreadState* par_scan_state) : 74 ParScanClosure(g, par_scan_state) {} 75 virtual void do_oop(oop* p); 76 virtual void do_oop(narrowOop* p); 77 }; 78 79 class ParRootScanWithoutBarrierClosure: public ParScanClosure { 80 public: 81 ParRootScanWithoutBarrierClosure(ParNewGeneration* g, 82 ParScanThreadState* par_scan_state) : 83 ParScanClosure(g, par_scan_state) {} 84 virtual void do_oop(oop* p); 85 virtual void do_oop(narrowOop* p); 86 }; 87 88 class ParScanWeakRefClosure: public ScanWeakRefClosure { 89 protected: 90 ParScanThreadState* _par_scan_state; 91 template <class T> inline void do_oop_work(T* p); 92 public: 93 ParScanWeakRefClosure(ParNewGeneration* g, 94 ParScanThreadState* par_scan_state); 95 virtual void do_oop(oop* p); 96 virtual void do_oop(narrowOop* p); 97 inline void do_oop_nv(oop* p); 98 inline void do_oop_nv(narrowOop* p); 99 }; 100 101 class ParEvacuateFollowersClosure: public VoidClosure { 102 private: 103 ParScanThreadState* _par_scan_state; 104 ParScanThreadState* par_scan_state() { return _par_scan_state; } 105 106 // We want to preserve the specific types here (rather than "OopClosure") 107 // for later de-virtualization of do_oop calls. 108 ParScanWithoutBarrierClosure* _to_space_closure; 109 ParScanWithoutBarrierClosure* to_space_closure() { 110 return _to_space_closure; 111 } 112 ParRootScanWithoutBarrierClosure* _to_space_root_closure; 113 ParRootScanWithoutBarrierClosure* to_space_root_closure() { 114 return _to_space_root_closure; 115 } 116 117 ParScanWithBarrierClosure* _old_gen_closure; 118 ParScanWithBarrierClosure* old_gen_closure () { 119 return _old_gen_closure; 120 } 121 ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure; 122 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () { 123 return _old_gen_root_closure; 124 } 125 126 ParNewGeneration* _par_gen; 127 ParNewGeneration* par_gen() { return _par_gen; } 128 129 ObjToScanQueueSet* _task_queues; 130 ObjToScanQueueSet* task_queues() { return _task_queues; } 131 132 ParallelTaskTerminator* _terminator; 133 ParallelTaskTerminator* terminator() { return _terminator; } 134 public: 135 ParEvacuateFollowersClosure( 136 ParScanThreadState* par_scan_state_, 137 ParScanWithoutBarrierClosure* to_space_closure_, 138 ParScanWithBarrierClosure* old_gen_closure_, 139 ParRootScanWithoutBarrierClosure* to_space_root_closure_, 140 ParNewGeneration* par_gen_, 141 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_, 142 ObjToScanQueueSet* task_queues_, 143 ParallelTaskTerminator* terminator_); 144 virtual void do_void(); 145 };