1 /* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 #ifndef CCMainThread_h 25 #define CCMainThread_h 26 27 #include <wtf/Noncopyable.h> 28 #include <wtf/PassOwnPtr.h> 29 30 namespace WebCore { 31 32 // Task wrapper around WTF::callOnMainThreadThread 33 class CCMainThread { 34 public: 35 class Task { 36 WTF_MAKE_NONCOPYABLE(Task); 37 public: ~Task()38 virtual ~Task() { } 39 virtual void performTask() = 0; instance()40 void* instance() const { return m_instance; } 41 protected: Task(void * instance)42 Task(void* instance) : m_instance(instance) { } 43 void* m_instance; 44 }; 45 46 static void postTask(PassOwnPtr<Task>); // Executes the task on main thread asynchronously. 47 private: 48 static void performTask(void*); 49 }; 50 51 } // namespace WebCore 52 53 #endif // CCMainThread_h 54