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 // TaskRunner::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 14 namespace base { 15 namespace 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::SingleThreadTaskRunner, or you 25 // may want base::WorkerPool. 26 class PostTaskAndReplyImpl { 27 public: 28 virtual ~PostTaskAndReplyImpl() = default; 29 30 // Implementation for TaskRunner::PostTaskAndReply and 31 // WorkerPool::PostTaskAndReply. 32 bool PostTaskAndReply(const tracked_objects::Location& from_here, 33 const Closure& task, 34 const Closure& reply); 35 36 private: 37 virtual bool PostTask(const tracked_objects::Location& from_here, 38 const Closure& task) = 0; 39 }; 40 41 } // namespace internal 42 } // namespace base 43 44 #endif // BASE_THREADING_POST_TASK_AND_REPLY_IMPL_H_ 45
