1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef MachineStackMarker_h
#define MachineStackMarker_h
#include <wtf/Noncopyable.h>
#include <wtf/ThreadingPrimitives.h>
#if ENABLE(JSC_MULTIPLE_THREADS)
#include <pthread.h>
#endif
namespace JSC {
class Heap;
class ConservativeSet;
class MachineStackMarker {
WTF_MAKE_NONCOPYABLE(MachineStackMarker);
public:
MachineStackMarker(Heap*);
~MachineStackMarker();
void markMachineStackConservatively(ConservativeSet&);
#if ENABLE(JSC_MULTIPLE_THREADS)
void makeUsableFromMultipleThreads();
void registerThread(); // Only needs to be called by clients that can use the same heap from multiple threads.
#endif
private:
void markCurrentThreadConservatively(ConservativeSet&);
void markCurrentThreadConservativelyInternal(ConservativeSet&);
#if ENABLE(JSC_MULTIPLE_THREADS)
class Thread;
static void unregisterThread(void*);
void unregisterThread();
void markOtherThreadConservatively(ConservativeSet&, Thread*);
#endif
Heap* m_heap;
#if ENABLE(JSC_MULTIPLE_THREADS)
Mutex m_registeredThreadsMutex;
Thread* m_registeredThreads;
pthread_key_t m_currentThreadRegistrar;
#endif
};
} // namespace JSC
#endif // MachineStackMarker_h
|
