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27 #include "Threading.h"
28 #include <wtf/OwnPtr.h>
29 #include <wtf/PassOwnPtr.h>
35 struct NewThreadContext {
36 WTF_MAKE_FAST_ALLOCATED;
38 NewThreadContext(ThreadFunction entryPoint, void* data, const char* name)
39 : entryPoint(entryPoint)
45 ThreadFunction entryPoint;
52 static void threadEntryPoint(void* contextData)
54 NewThreadContext* context = reinterpret_cast<NewThreadContext*>(contextData);
56 // Block until our creating thread has completed any extra setup work, including
57 // establishing ThreadIdentifier.
59 MutexLocker locker(context->creationMutex);
62 initializeCurrentThreadInternal(context->name);
64 // Grab the info that we need out of the context, then deallocate it.
65 ThreadFunction entryPoint = context->entryPoint;
66 void* data = context->data;
72 ThreadIdentifier createThread(ThreadFunction entryPoint, void* data, const char* name)
74 // Visual Studio has a 31-character limit on thread names. Longer names will
75 // be truncated silently, but we'd like callers to know about the limit.
77 if (strlen(name) > 31)
78 LOG_ERROR("Thread name \"%s\" is longer than 31 characters and will be truncated by Visual Studio", name);
81 NewThreadContext* context = new NewThreadContext(entryPoint, data, name);
83 // Prevent the thread body from executing until we've established the thread identifier.
84 MutexLocker locker(context->creationMutex);
86 return createThreadInternal(threadEntryPoint, context, name);
89 #if PLATFORM(MAC) || PLATFORM(WIN)
91 // For ABI compatibility with Safari on Mac / Windows: Safari uses the private
92 // createThread() and waitForThreadCompletion() functions directly and we need
93 // to keep the old ABI compatibility until it's been rebuilt.
95 typedef void* (*ThreadFunctionWithReturnValue)(void* argument);
97 WTF_EXPORT_PRIVATE ThreadIdentifier createThread(ThreadFunctionWithReturnValue entryPoint, void* data, const char* name);
99 struct ThreadFunctionWithReturnValueInvocation {
100 ThreadFunctionWithReturnValueInvocation(ThreadFunctionWithReturnValue function, void* data)
106 ThreadFunctionWithReturnValue function;
110 static void compatEntryPoint(void* param)
112 // Balanced by .leakPtr() in createThread.
113 OwnPtr<ThreadFunctionWithReturnValueInvocation> invocation = adoptPtr(static_cast<ThreadFunctionWithReturnValueInvocation*>(param));
114 invocation->function(invocation->data);
117 ThreadIdentifier createThread(ThreadFunctionWithReturnValue entryPoint, void* data, const char* name)
119 OwnPtr<ThreadFunctionWithReturnValueInvocation> invocation = adoptPtr(new ThreadFunctionWithReturnValueInvocation(entryPoint, data));
121 // Balanced by adoptPtr() in compatEntryPoint.
122 return createThread(compatEntryPoint, invocation.leakPtr(), name);
125 WTF_EXPORT_PRIVATE int waitForThreadCompletion(ThreadIdentifier, void**);
127 int waitForThreadCompletion(ThreadIdentifier threadID, void**)
129 return waitForThreadCompletion(threadID);
132 // This function is deprecated but needs to be kept around for backward
133 // compatibility. Use the 3-argument version of createThread above.
135 WTF_EXPORT_PRIVATE ThreadIdentifier createThread(ThreadFunctionWithReturnValue entryPoint, void* data);
137 ThreadIdentifier createThread(ThreadFunctionWithReturnValue entryPoint, void* data)
139 OwnPtr<ThreadFunctionWithReturnValueInvocation> invocation = adoptPtr(new ThreadFunctionWithReturnValueInvocation(entryPoint, data));
141 // Balanced by adoptPtr() in compatEntryPoint.
142 return createThread(compatEntryPoint, invocation.leakPtr(), 0);