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Side by Side Diff: third_party/WebKit/Source/wtf/Threading.h

Issue 1436153002: Apply clang-format with Chromium-style without column limit. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 1 month ago
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1 /* 1 /*
2 * Copyright (C) 2007, 2008, 2010 Apple Inc. All rights reserved. 2 * Copyright (C) 2007, 2008, 2010 Apple Inc. All rights reserved.
3 * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com) 3 * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
4 * 4 *
5 * Redistribution and use in source and binary forms, with or without 5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions 6 * modification, are permitted provided that the following conditions
7 * are met: 7 * are met:
8 * 8 *
9 * 1. Redistributions of source code must retain the above copyright 9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer. 10 * notice, this list of conditions and the following disclaimer.
(...skipping 20 matching lines...) Expand all
31 #define Threading_h 31 #define Threading_h
32 32
33 #include "wtf/Atomics.h" 33 #include "wtf/Atomics.h"
34 #include "wtf/TypeTraits.h" 34 #include "wtf/TypeTraits.h"
35 #include "wtf/WTFExport.h" 35 #include "wtf/WTFExport.h"
36 #include <stdint.h> 36 #include <stdint.h>
37 37
38 // For portability, we do not make use of C++11 thread-safe statics, as supporte d 38 // For portability, we do not make use of C++11 thread-safe statics, as supporte d
39 // by some toolchains. Make use of double-checked locking to reduce overhead. 39 // by some toolchains. Make use of double-checked locking to reduce overhead.
40 #define AtomicallyInitializedStaticReferenceInternal(T, name, initializer, LOCK, UNLOCK) \ 40 #define AtomicallyInitializedStaticReferenceInternal(T, name, initializer, LOCK, UNLOCK) \
41 /* Init to nullptr is thread-safe on all implementations. */ \ 41 /* Init to nullptr is thread-safe on all implementations. */ \
42 static void* name##Pointer = nullptr; \ 42 static void* name##Pointer = nullptr; \
43 if (!WTF::acquireLoad(&name##Pointer)) { \ 43 if (!WTF::acquireLoad(&name##Pointer)) { \
44 LOCK; \ 44 LOCK; \
45 if (!WTF::acquireLoad(&name##Pointer)) { \ 45 if (!WTF::acquireLoad(&name##Pointer)) { \
46 WTF::RemoveConst<T>::Type* initializerResult = initializer; \ 46 WTF::RemoveConst<T>::Type* initializerResult = initializer; \
47 WTF::releaseStore(&name##Pointer, initializerResult); \ 47 WTF::releaseStore(&name##Pointer, initializerResult); \
48 } \ 48 } \
49 UNLOCK; \ 49 UNLOCK; \
50 } \ 50 } \
51 T& name = *static_cast<T*>(name##Pointer) 51 T& name = *static_cast<T*>(name##Pointer)
52 52
53 // Uses system-wide default lock. This version cannot be used before 53 // Uses system-wide default lock. This version cannot be used before
54 // WTF::initializeThreading() is called. 54 // WTF::initializeThreading() is called.
55 #define AtomicallyInitializedStaticReference(T, name, initializer) \ 55 #define AtomicallyInitializedStaticReference(T, name, initializer) \
56 AtomicallyInitializedStaticReferenceInternal( \ 56 AtomicallyInitializedStaticReferenceInternal( \
57 T, name, initializer, \ 57 T, name, initializer, \
58 WTF::lockAtomicallyInitializedStaticMutex(), \ 58 WTF::lockAtomicallyInitializedStaticMutex(), \
59 WTF::unlockAtomicallyInitializedStaticMutex()) 59 WTF::unlockAtomicallyInitializedStaticMutex())
60 60
61 // Same as above but uses a given lock. 61 // Same as above but uses a given lock.
62 #define AtomicallyInitializedStaticReferenceWithLock(T, name, initializer, locka ble) \ 62 #define AtomicallyInitializedStaticReferenceWithLock(T, name, initializer, locka ble) \
63 AtomicallyInitializedStaticReferenceInternal( \ 63 AtomicallyInitializedStaticReferenceInternal( \
64 T, name, initializer, lockable.lock(), lockable.unlock()); 64 T, name, initializer, lockable.lock(), lockable.unlock());
65 65
66 namespace WTF { 66 namespace WTF {
67 67
68 #if OS(WIN) 68 #if OS(WIN)
69 typedef uint32_t ThreadIdentifier; 69 typedef uint32_t ThreadIdentifier;
70 #else 70 #else
71 typedef intptr_t ThreadIdentifier; 71 typedef intptr_t ThreadIdentifier;
72 #endif 72 #endif
73 73
74 WTF_EXPORT ThreadIdentifier currentThread(); 74 WTF_EXPORT ThreadIdentifier currentThread();
75 75
76 WTF_EXPORT void lockAtomicallyInitializedStaticMutex(); 76 WTF_EXPORT void lockAtomicallyInitializedStaticMutex();
77 WTF_EXPORT void unlockAtomicallyInitializedStaticMutex(); 77 WTF_EXPORT void unlockAtomicallyInitializedStaticMutex();
78 78
79 #if ENABLE(ASSERT) 79 #if ENABLE(ASSERT)
80 WTF_EXPORT bool isAtomicallyInitializedStaticMutexLockHeld(); 80 WTF_EXPORT bool isAtomicallyInitializedStaticMutexLockHeld();
81 WTF_EXPORT bool isBeforeThreadCreated(); 81 WTF_EXPORT bool isBeforeThreadCreated();
82 WTF_EXPORT void willCreateThread(); 82 WTF_EXPORT void willCreateThread();
83 #endif 83 #endif
84 84
85 } // namespace WTF 85 } // namespace WTF
86 86
87 using WTF::ThreadIdentifier; 87 using WTF::ThreadIdentifier;
88 using WTF::currentThread; 88 using WTF::currentThread;
89 89
90 #endif // Threading_h 90 #endif // Threading_h
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