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src/share/vm/gc_implementation/parNew/parOopClosures.hpp@9fec19bb0659
src/share/vm/gc_implementation/parNew/parOopClosures.hpp
Tue, 14 Jan 2014 16:40:33 +0100
- author
- mgerdin
- date
- Tue, 14 Jan 2014 16:40:33 +0100
- changeset 6968
- 9fec19bb0659
- parent 5515
- 9766f73e770d
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
8032379: Remove the is_scavenging flag to process_strong_roots
Summary: Refactor the strong root processing to avoid using a boolean in addition to the ScanOption enum.
Reviewed-by: stefank, tschatzl, ehelin, jmasa
1 /*
2 * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
8 *
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * accompanied this code).
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23 */
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_HPP
28 #include "memory/genOopClosures.hpp"
29 #include "memory/padded.hpp"
31 // Closures for ParNewGeneration
33 class ParScanThreadState;
34 class ParNewGeneration;
35 typedef Padded<OopTaskQueue> ObjToScanQueue;
36 typedef GenericTaskQueueSet<ObjToScanQueue, mtGC> ObjToScanQueueSet;
37 class ParallelTaskTerminator;
39 class ParScanClosure: public OopsInKlassOrGenClosure {
40 protected:
41 ParScanThreadState* _par_scan_state;
42 ParNewGeneration* _g;
43 HeapWord* _boundary;
44 template <class T> void inline par_do_barrier(T* p);
45 template <class T> void inline do_oop_work(T* p,
46 bool gc_barrier,
47 bool root_scan);
48 public:
49 ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state);
50 };
52 class ParScanWithBarrierClosure: public ParScanClosure {
53 public:
54 ParScanWithBarrierClosure(ParNewGeneration* g,
55 ParScanThreadState* par_scan_state) :
56 ParScanClosure(g, par_scan_state) {}
57 virtual void do_oop(oop* p);
58 virtual void do_oop(narrowOop* p);
59 inline void do_oop_nv(oop* p);
60 inline void do_oop_nv(narrowOop* p);
61 };
63 class ParScanWithoutBarrierClosure: public ParScanClosure {
64 public:
65 ParScanWithoutBarrierClosure(ParNewGeneration* g,
66 ParScanThreadState* par_scan_state) :
67 ParScanClosure(g, par_scan_state) {}
68 virtual void do_oop(oop* p);
69 virtual void do_oop(narrowOop* p);
70 inline void do_oop_nv(oop* p);
71 inline void do_oop_nv(narrowOop* p);
72 };
74 class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure {
75 public:
76 ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g,
77 ParScanThreadState* par_scan_state) :
78 ParScanClosure(g, par_scan_state) {}
79 virtual void do_oop(oop* p);
80 virtual void do_oop(narrowOop* p);
81 };
83 class ParRootScanWithoutBarrierClosure: public ParScanClosure {
84 public:
85 ParRootScanWithoutBarrierClosure(ParNewGeneration* g,
86 ParScanThreadState* par_scan_state) :
87 ParScanClosure(g, par_scan_state) {}
88 virtual void do_oop(oop* p);
89 virtual void do_oop(narrowOop* p);
90 };
92 class ParScanWeakRefClosure: public ScanWeakRefClosure {
93 protected:
94 ParScanThreadState* _par_scan_state;
95 template <class T> inline void do_oop_work(T* p);
96 public:
97 ParScanWeakRefClosure(ParNewGeneration* g,
98 ParScanThreadState* par_scan_state);
99 virtual void do_oop(oop* p);
100 virtual void do_oop(narrowOop* p);
101 inline void do_oop_nv(oop* p);
102 inline void do_oop_nv(narrowOop* p);
103 };
105 class ParEvacuateFollowersClosure: public VoidClosure {
106 private:
107 ParScanThreadState* _par_scan_state;
108 ParScanThreadState* par_scan_state() { return _par_scan_state; }
110 // We want to preserve the specific types here (rather than "OopClosure")
111 // for later de-virtualization of do_oop calls.
112 ParScanWithoutBarrierClosure* _to_space_closure;
113 ParScanWithoutBarrierClosure* to_space_closure() {
114 return _to_space_closure;
115 }
116 ParRootScanWithoutBarrierClosure* _to_space_root_closure;
117 ParRootScanWithoutBarrierClosure* to_space_root_closure() {
118 return _to_space_root_closure;
119 }
121 ParScanWithBarrierClosure* _old_gen_closure;
122 ParScanWithBarrierClosure* old_gen_closure () {
123 return _old_gen_closure;
124 }
125 ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure;
126 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () {
127 return _old_gen_root_closure;
128 }
130 ParNewGeneration* _par_gen;
131 ParNewGeneration* par_gen() { return _par_gen; }
133 ObjToScanQueueSet* _task_queues;
134 ObjToScanQueueSet* task_queues() { return _task_queues; }
136 ParallelTaskTerminator* _terminator;
137 ParallelTaskTerminator* terminator() { return _terminator; }
138 public:
139 ParEvacuateFollowersClosure(
140 ParScanThreadState* par_scan_state_,
141 ParScanWithoutBarrierClosure* to_space_closure_,
142 ParScanWithBarrierClosure* old_gen_closure_,
143 ParRootScanWithoutBarrierClosure* to_space_root_closure_,
144 ParNewGeneration* par_gen_,
145 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_,
146 ObjToScanQueueSet* task_queues_,
147 ParallelTaskTerminator* terminator_);
148 virtual void do_void();
149 };
151 #endif // SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_HPP
