Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.hpp @ 7179:d0aa87f04bd5
8003720: NPG: Method in interpreter stack frame can be deallocated
Summary: Pass down a closure during root scanning to keep the class of the method alive.
Reviewed-by: coleenp, jcoomes
author | stefank |
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date | Tue, 27 Nov 2012 10:13:20 +0100 |
parents | b9a9ed0f8eeb |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GCTASKTHREAD_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GCTASKTHREAD_HPP | |
27 | |
28 #include "runtime/thread.hpp" | |
29 | |
0 | 30 // Forward declarations of classes defined here. |
31 class GCTaskThread; | |
32 class GCTaskTimeStamp; | |
33 | |
34 // Declarations of classes referenced in this file via pointer. | |
35 class GCTaskManager; | |
36 | |
37 class GCTaskThread : public WorkerThread { | |
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38 friend class GCTaskManager; |
0 | 39 private: |
40 // Instance state. | |
41 GCTaskManager* _manager; // Manager for worker. | |
42 const uint _processor_id; // Which processor the worker is on. | |
43 | |
44 GCTaskTimeStamp* _time_stamps; | |
45 uint _time_stamp_index; | |
46 | |
47 GCTaskTimeStamp* time_stamp_at(uint index); | |
48 | |
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49 bool _is_working; // True if participating in GC tasks |
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50 |
0 | 51 public: |
52 // Factory create and destroy methods. | |
53 static GCTaskThread* create(GCTaskManager* manager, | |
54 uint which, | |
55 uint processor_id) { | |
56 return new GCTaskThread(manager, which, processor_id); | |
57 } | |
58 static void destroy(GCTaskThread* manager) { | |
59 if (manager != NULL) { | |
60 delete manager; | |
61 } | |
62 } | |
63 // Methods from Thread. | |
64 bool is_GC_task_thread() const { | |
65 return true; | |
66 } | |
67 virtual void run(); | |
68 // Methods. | |
69 void start(); | |
70 | |
71 void print_task_time_stamps(); | |
72 void print_on(outputStream* st) const; | |
73 void print() const { print_on(tty); } | |
74 | |
75 protected: | |
76 // Constructor. Clients use factory, but there could be subclasses. | |
77 GCTaskThread(GCTaskManager* manager, uint which, uint processor_id); | |
78 // Destructor: virtual destructor because of virtual methods. | |
79 virtual ~GCTaskThread(); | |
80 // Accessors. | |
81 GCTaskManager* manager() const { | |
82 return _manager; | |
83 } | |
84 uint which() const { | |
85 return id(); | |
86 } | |
87 uint processor_id() const { | |
88 return _processor_id; | |
89 } | |
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90 void set_is_working(bool v) { _is_working = v; } |
0 | 91 }; |
92 | |
6197 | 93 class GCTaskTimeStamp : public CHeapObj<mtGC> |
0 | 94 { |
95 private: | |
96 jlong _entry_time; | |
97 jlong _exit_time; | |
98 char* _name; | |
99 | |
100 public: | |
101 jlong entry_time() { return _entry_time; } | |
102 jlong exit_time() { return _exit_time; } | |
103 const char* name() const { return (const char*)_name; } | |
104 | |
105 void set_entry_time(jlong time) { _entry_time = time; } | |
106 void set_exit_time(jlong time) { _exit_time = time; } | |
107 void set_name(char* name) { _name = name; } | |
108 }; | |
1972 | 109 |
110 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GCTASKTHREAD_HPP |