1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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23 */
24
25#ifndef SHARE_GC_CMS_PAROOPCLOSURES_HPP
26#define SHARE_GC_CMS_PAROOPCLOSURES_HPP
27
28#include "gc/shared/genOopClosures.hpp"
29#include "gc/shared/taskqueue.hpp"
30#include "memory/padded.hpp"
31
32// Closures for ParNewGeneration
33
34class ParScanThreadState;
35class ParNewGeneration;
36typedef Padded<OopTaskQueue> ObjToScanQueue;
37typedef GenericTaskQueueSet<ObjToScanQueue, mtGC> ObjToScanQueueSet;
38class ParallelTaskTerminator;
39
40class ParScanClosure: public OopsInClassLoaderDataOrGenClosure {
41 protected:
42 ParScanThreadState* _par_scan_state;
43 ParNewGeneration* _g;
44 HeapWord* _boundary;
45 template <class T> void inline par_do_barrier(T* p);
46 template <class T> void inline do_oop_work(T* p,
47 bool gc_barrier,
48 bool root_scan);
49 public:
50 ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state);
51};
52
53class ParScanWithBarrierClosure: public ParScanClosure {
54 public:
55 ParScanWithBarrierClosure(ParNewGeneration* g,
56 ParScanThreadState* par_scan_state) :
57 ParScanClosure(g, par_scan_state) {}
58 virtual void do_oop(oop* p);
59 virtual void do_oop(narrowOop* p);
60};
61
62class ParScanWithoutBarrierClosure: public ParScanClosure {
63 public:
64 ParScanWithoutBarrierClosure(ParNewGeneration* g,
65 ParScanThreadState* par_scan_state) :
66 ParScanClosure(g, par_scan_state) {}
67 virtual void do_oop(oop* p);
68 virtual void do_oop(narrowOop* p);
69};
70
71class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure {
72 public:
73 ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g,
74 ParScanThreadState* par_scan_state) :
75 ParScanClosure(g, par_scan_state) {}
76 virtual void do_oop(oop* p);
77 virtual void do_oop(narrowOop* p);
78};
79
80class ParRootScanWithoutBarrierClosure: public ParScanClosure {
81 public:
82 ParRootScanWithoutBarrierClosure(ParNewGeneration* g,
83 ParScanThreadState* par_scan_state) :
84 ParScanClosure(g, par_scan_state) {}
85 virtual void do_oop(oop* p);
86 virtual void do_oop(narrowOop* p);
87};
88
89class ParScanWeakRefClosure: public ScanWeakRefClosure {
90 protected:
91 ParScanThreadState* _par_scan_state;
92 template <class T> inline void do_oop_work(T* p);
93 public:
94 ParScanWeakRefClosure(ParNewGeneration* g,
95 ParScanThreadState* par_scan_state);
96 virtual void do_oop(oop* p);
97 virtual void do_oop(narrowOop* p);
98};
99
100class ParEvacuateFollowersClosure: public VoidClosure {
101 private:
102 ParScanThreadState* _par_scan_state;
103 ParScanThreadState* par_scan_state() { return _par_scan_state; }
104
105 // We want to preserve the specific types here (rather than "OopClosure")
106 // for later de-virtualization of do_oop calls.
107 ParScanWithoutBarrierClosure* _to_space_closure;
108 ParScanWithoutBarrierClosure* to_space_closure() {
109 return _to_space_closure;
110 }
111 ParRootScanWithoutBarrierClosure* _to_space_root_closure;
112 ParRootScanWithoutBarrierClosure* to_space_root_closure() {
113 return _to_space_root_closure;
114 }
115
116 ParScanWithBarrierClosure* _old_gen_closure;
117 ParScanWithBarrierClosure* old_gen_closure () {
118 return _old_gen_closure;
119 }
120 ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure;
121 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () {
122 return _old_gen_root_closure;
123 }
124
125 ParNewGeneration* _par_gen;
126 ParNewGeneration* par_gen() { return _par_gen; }
127
128 ObjToScanQueueSet* _task_queues;
129 ObjToScanQueueSet* task_queues() { return _task_queues; }
130
131 ParallelTaskTerminator* _terminator;
132 ParallelTaskTerminator* terminator() { return _terminator; }
133 public:
134 ParEvacuateFollowersClosure(
135 ParScanThreadState* par_scan_state_,
136 ParScanWithoutBarrierClosure* to_space_closure_,
137 ParScanWithBarrierClosure* old_gen_closure_,
138 ParRootScanWithoutBarrierClosure* to_space_root_closure_,
139 ParNewGeneration* par_gen_,
140 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_,
141 ObjToScanQueueSet* task_queues_,
142 ParallelTaskTerminator* terminator_);
143 virtual void do_void();
144};
145
146#endif // SHARE_GC_CMS_PAROOPCLOSURES_HPP
147