Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 85 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wtf/MainThread.h b/Source/JavaScriptCore/wtf/MainThread.h
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+/*
+ * Copyright (C) 2007, 2008, 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer. 
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef MainThread_h
+#define MainThread_h
+
+#include "Platform.h"
+
+#include <stdint.h>
+
+namespace WTF {
+
+typedef uint32_t ThreadIdentifier;
+typedef void MainThreadFunction(void*);
+
+// Must be called from the main thread.
+void initializeMainThread();
+
+void callOnMainThread(MainThreadFunction*, void* context);
+void callOnMainThreadAndWait(MainThreadFunction*, void* context);
+void cancelCallOnMainThread(MainThreadFunction*, void* context);
+
+template<typename> class Function;
+void callOnMainThread(const Function<void ()>&);
+    
+void setMainThreadCallbacksPaused(bool paused);
+
+bool isMainThread();
+#if ENABLE(PARALLEL_GC)
+void registerGCThread();
+bool isMainThreadOrGCThread();
+#elif PLATFORM(MAC)
+bool isMainThreadOrGCThread();
+#else
+inline bool isMainThreadOrGCThread() { return isMainThread(); }
+#endif
+
+// NOTE: these functions are internal to the callOnMainThread implementation.
+void initializeMainThreadPlatform();
+void scheduleDispatchFunctionsOnMainThread();
+void dispatchFunctionsFromMainThread();
+
+#if PLATFORM(MAC)
+// This version of initializeMainThread sets up the main thread as corresponding
+// to the process's main thread, and not necessarily the thread that calls this
+// function. It should only be used as a legacy aid for Mac WebKit.
+void initializeMainThreadToProcessMainThread();
+void initializeMainThreadToProcessMainThreadPlatform();
+#endif
+
+} // namespace WTF
+
+using WTF::callOnMainThread;
+using WTF::callOnMainThreadAndWait;
+using WTF::cancelCallOnMainThread;
+using WTF::setMainThreadCallbacksPaused;
+using WTF::isMainThread;
+using WTF::isMainThreadOrGCThread;
+#endif // MainThread_h