Add V8 bindings for Worker (Part I).

webkit/port/bindings/v8/Threading.cpp

+// Copyright (c) 2009, Google Inc.
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// 
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * 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.
+//     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+// OWNER OR 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.
+
+
+#include "Threading.h"
+#undef LOG
+
+#include "base/message_loop.h"
+#include "base/task.h"
+
+namespace WTF {
+
+struct NewThreadContext {
+    NewThreadContext(ThreadFunction entryPoint, void* data, const char* name)
+        : entryPoint(entryPoint)
+        , data(data)
+        , name(name)
+    { }
+
+    ThreadFunction entryPoint;
+    void* data;
+    std::string name;
+
+    Mutex creationMutex;
+};
+
+static void* threadEntryPoint(void* contextData)
+{
+    NewThreadContext* context = reinterpret_cast<NewThreadContext*>(contextData);
+
+    // Block until our creating thread has completed any extra setup work
+    {
+        MutexLocker locker(context->creationMutex);
+    }
+
+    // Run via Chrome's message loop
+    MessageLoop message_loop;
+    message_loop.set_thread_name(context->name);
+    message_loop.PostTask(FROM_HERE,
+                          NewRunnableFunction(context->entryPoint, context->data));
+    message_loop.Run();
+
+    delete context;
+
+    return NULL;
+}
+
+ThreadIdentifier createThread(ThreadFunction entryPoint, void* data, const char* name)
+{
+    NewThreadContext* context = new NewThreadContext(entryPoint, data, name);
+
+    // Prevent the thread body from executing until we've established the thread identifier
+    MutexLocker locker(context->creationMutex);
+
+    return createThreadInternal(threadEntryPoint, context, name);
+}
+
+#if PLATFORM(MAC) || PLATFORM(WIN)
+
+// This function is deprecated but needs to be kept around for backward
+// compatibility. Use the 3-argument version of createThread above.
+
+ThreadIdentifier createThread(ThreadFunction entryPoint, void* data)
+{
+    return createThread(entryPoint, data, 0);
+}
+#endif
+
+} // namespace WTF