1// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// This file contains the implementation shared by 6// MessageLoopProxy::PostTaskAndReply and WorkerPool::PostTaskAndReply. 7 8#ifndef BASE_THREADING_POST_TASK_AND_REPLY_IMPL_H_ 9#define BASE_THREADING_POST_TASK_AND_REPLY_IMPL_H_ 10 11#include "base/callback_forward.h" 12#include "base/location.h" 13 14namespace base { 15namespace internal { 16 17// Inherit from this in a class that implements PostTask appropriately 18// for sending to a destination thread. 19// 20// Note that 'reply' will always get posted back to your current 21// MessageLoop. 22// 23// If you're looking for a concrete implementation of 24// PostTaskAndReply, you probably want base::MessageLoopProxy, or you 25// may want base::WorkerPool. 26class PostTaskAndReplyImpl { 27 public: 28 // Implementation for MessageLoopProxy::PostTaskAndReply and 29 // WorkerPool::PostTaskAndReply. 30 bool PostTaskAndReply(const tracked_objects::Location& from_here, 31 const Closure& task, 32 const Closure& reply); 33 34 private: 35 virtual bool PostTask(const tracked_objects::Location& from_here, 36 const Closure& task) = 0; 37}; 38 39} // namespace internal 40} // namespace base 41 42#endif // BASE_THREADING_POST_TASK_AND_REPLY_IMPL_H_ 43