1 /*
2 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_HPP
27
28 #include "memory/genOopClosures.hpp"
29
30 // Closures for ParNewGeneration
31
32 class ParScanThreadState;
33 class ParNewGeneration;
34 typedef Padded<OopTaskQueue> ObjToScanQueue;
35 typedef GenericTaskQueueSet<ObjToScanQueue> ObjToScanQueueSet;
36 class ParallelTaskTerminator;
37
38 class ParScanClosure: public OopsInGenClosure {
39 protected:
40 ParScanThreadState* _par_scan_state;
41 ParNewGeneration* _g;
42 HeapWord* _boundary;
43 template <class T> void inline par_do_barrier(T* p);
44 template <class T> void inline do_oop_work(T* p,
45 bool gc_barrier,
46 bool root_scan);
47 public:
48 ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state);
49 };
50
51 class ParScanWithBarrierClosure: public ParScanClosure {
52 public:
53 ParScanWithBarrierClosure(ParNewGeneration* g,
54 ParScanThreadState* par_scan_state) :
55 ParScanClosure(g, par_scan_state) {}
56 virtual void do_oop(oop* p);
57 virtual void do_oop(narrowOop* p);
58 inline void do_oop_nv(oop* p);
59 inline void do_oop_nv(narrowOop* p);
60 };
61
62 class 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 inline void do_oop_nv(oop* p);
70 inline void do_oop_nv(narrowOop* p);
71 };
72
73 class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure {
74 public:
75 ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g,
76 ParScanThreadState* par_scan_state) :
77 ParScanClosure(g, par_scan_state) {}
78 virtual void do_oop(oop* p);
79 virtual void do_oop(narrowOop* p);
80 };
81
82 class ParRootScanWithoutBarrierClosure: public ParScanClosure {
83 public:
84 ParRootScanWithoutBarrierClosure(ParNewGeneration* g,
85 ParScanThreadState* par_scan_state) :
86 ParScanClosure(g, par_scan_state) {}
87 virtual void do_oop(oop* p);
88 virtual void do_oop(narrowOop* p);
89 };
90
91 class ParScanWeakRefClosure: public ScanWeakRefClosure {
92 protected:
93 ParScanThreadState* _par_scan_state;
94 template <class T> inline void do_oop_work(T* p);
95 public:
96 ParScanWeakRefClosure(ParNewGeneration* g,
97 ParScanThreadState* par_scan_state);
98 virtual void do_oop(oop* p);
99 virtual void do_oop(narrowOop* p);
100 inline void do_oop_nv(oop* p);
101 inline void do_oop_nv(narrowOop* p);
102 };
103
104 class ParEvacuateFollowersClosure: public VoidClosure {
105 private:
106 ParScanThreadState* _par_scan_state;
107 ParScanThreadState* par_scan_state() { return _par_scan_state; }
108
109 // We want to preserve the specific types here (rather than "OopClosure")
110 // for later de-virtualization of do_oop calls.
111 ParScanWithoutBarrierClosure* _to_space_closure;
112 ParScanWithoutBarrierClosure* to_space_closure() {
113 return _to_space_closure;
114 }
115 ParRootScanWithoutBarrierClosure* _to_space_root_closure;
116 ParRootScanWithoutBarrierClosure* to_space_root_closure() {
117 return _to_space_root_closure;
118 }
119
120 ParScanWithBarrierClosure* _old_gen_closure;
121 ParScanWithBarrierClosure* old_gen_closure () {
122 return _old_gen_closure;
123 }
124 ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure;
125 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () {
126 return _old_gen_root_closure;
127 }
128
129 ParNewGeneration* _par_gen;
130 ParNewGeneration* par_gen() { return _par_gen; }
131
132 ObjToScanQueueSet* _task_queues;
133 ObjToScanQueueSet* task_queues() { return _task_queues; }
134
135 ParallelTaskTerminator* _terminator;
136 ParallelTaskTerminator* terminator() { return _terminator; }
137 public:
138 ParEvacuateFollowersClosure(
139 ParScanThreadState* par_scan_state_,
140 ParScanWithoutBarrierClosure* to_space_closure_,
141 ParScanWithBarrierClosure* old_gen_closure_,
142 ParRootScanWithoutBarrierClosure* to_space_root_closure_,
143 ParNewGeneration* par_gen_,
144 ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_,
145 ObjToScanQueueSet* task_queues_,
146 ParallelTaskTerminator* terminator_);
147 virtual void do_void();
148 };
149
150 #endif // SHARE_VM_GC_IMPLEMENTATION_PARNEW_PAROOPCLOSURES_HPP