| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MOJO_PUBLIC_CPP_ENVIRONMENT_ASYNC_WAITER_H_ |
| #define MOJO_PUBLIC_CPP_ENVIRONMENT_ASYNC_WAITER_H_ |
| |
| #include <mojo/environment/async_waiter.h> |
| |
| #include "mojo/public/cpp/bindings/callback.h" |
| #include "mojo/public/cpp/environment/environment.h" |
| #include "mojo/public/cpp/system/handle.h" |
| |
| namespace mojo { |
| |
| // A class that waits until a handle is ready and calls |callback| with the |
| // result. If the AsyncWaiter is deleted before the handle is ready, the wait is |
| // cancelled and the callback will not be called. |
| class AsyncWaiter { |
| public: |
| typedef mojo::Callback<void(MojoResult)> Callback; |
| |
| AsyncWaiter(Handle handle, |
| MojoHandleSignals signals, |
| const Callback& callback); |
| ~AsyncWaiter(); |
| |
| private: |
| static void WaitComplete(void* waiter, MojoResult result); |
| void WaitCompleteInternal(MojoResult result); |
| |
| const MojoAsyncWaiter* waiter_; |
| MojoAsyncWaitID id_; |
| const Callback callback_; |
| |
| MOJO_DISALLOW_COPY_AND_ASSIGN(AsyncWaiter); |
| }; |
| |
| } // namespace mojo |
| |
| #endif // MOJO_PUBLIC_CPP_ENVIRONMENT_ASYNC_WAITER_H_ |