webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 81 insertions, 0 deletions

diff --git a/Source/WTF/wtf/glib/MainThreadGLib.cpp b/Source/WTF/wtf/glib/MainThreadGLib.cpp
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index 000000000..c2fa56fcf
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+++ b/Source/WTF/wtf/glib/MainThreadGLib.cpp
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+/*
+ * Copyright (C) 2007, 2008 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 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.
+ */
+
+#include "config.h"
+#include "MainThread.h"
+
+#include <glib.h>
+#include <wtf/RunLoop.h>
+
+static pthread_t mainThreadPthread;
+
+namespace WTF {
+
+class MainThreadDispatcher {
+public:
+    MainThreadDispatcher()
+        : m_timer(RunLoop::main(), this, &MainThreadDispatcher::fired)
+    {
+        m_timer.setPriority(G_PRIORITY_HIGH_IDLE + 20);
+    }
+
+    void schedule()
+    {
+        m_timer.startOneShot(0);
+    }
+
+private:
+    void fired()
+    {
+        dispatchFunctionsFromMainThread();
+    }
+
+    RunLoop::Timer<MainThreadDispatcher> m_timer;
+};
+
+void initializeMainThreadPlatform()
+{
+    mainThreadPthread = pthread_self();
+}
+
+bool isMainThread()
+{
+    ASSERT(mainThreadPthread);
+    return pthread_equal(pthread_self(), mainThreadPthread);
+}
+
+void scheduleDispatchFunctionsOnMainThread()
+{
+    // Use a RunLoop::Timer instead of RunLoop::dispatch() to be able to use a different priority and
+    // avoid the double queue because dispatchOnMainThread also queues the functions.
+    static MainThreadDispatcher dispatcher;
+    dispatcher.schedule();
+}
+
+} // namespace WTF