/* * 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/PassOwnPtr.h> #include <wtf/Threading.h> namespace WebCore { // CCThread provides basic infrastructure for messaging with the compositor in a // platform-neutral way. class CCThread { public: 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; }; // Executes the task on context's thread asynchronously. virtual void postTask(PassOwnPtr<Task>) = 0; // Executes the task after the specified delay. virtual void postDelayedTask(PassOwnPtr<Task>, long long delayMs) = 0; virtual WTF::ThreadIdentifier threadID() const = 0; }; } #endif