1 files changed, 75 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/chromium/cc/CCThread.h b/Source/WebCore/platform/graphics/chromium/cc/CCThread.h
new file mode 100644
index 0000000..177d3f3
--- /dev/null
+++ b/Source/WebCore/platform/graphics/chromium/cc/CCThread.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2011 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:
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 CCThread_h
+#define CCThread_h
+
+#include <wtf/MessageQueue.h>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/RefCounted.h>
+#include <wtf/Threading.h>
+
+namespace WebCore {
+
+// The CCThread singleton owns the compositor thread and provides
+// basic infrastructure for messaging between the two threads.
+class CCThread {
+public:
+    static PassOwnPtr<CCThread> create()
+    {
+        return adoptPtr(new CCThread());
+    }
+
+    virtual ~CCThread();
+
+    class Task {
+        WTF_MAKE_NONCOPYABLE(Task);
+    public:
+        virtual ~Task() { }
+        virtual void performTask() = 0;
+        void* instance() const { return m_instance; }
+    protected:
+        Task(void* instance) : m_instance(instance) { }
+        void* m_instance;
+    };
+
+    void postTask(PassOwnPtr<Task>); // Executes the task on context's thread asynchronously.
+
+    WTF::ThreadIdentifier threadID() const { return m_threadID; }
+
+protected:
+    explicit CCThread();
+
+    static void* compositorThreadStart(void*);
+    void* runLoop();
+
+    WTF::ThreadIdentifier m_threadID;
+    MessageQueue<Task> m_queue;
+
+    Mutex m_threadCreationMutex;
+};
+
+}
+
+#endif