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| 1 // Copyright 2014 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 #ifndef MOJO_PUBLIC_CPP_ENVIRONMENT_ASYNC_WAITER_H_ | |
| 6 #define MOJO_PUBLIC_CPP_ENVIRONMENT_ASYNC_WAITER_H_ | |
| 7 | |
| 8 #include "mojo/public/c/environment/async_waiter.h" | |
| 9 #include "mojo/public/cpp/bindings/callback.h" | |
| 10 #include "mojo/public/cpp/environment/environment.h" | |
| 11 #include "mojo/public/cpp/system/handle.h" | |
| 12 | |
| 13 namespace mojo { | |
| 14 | |
| 15 // A class that waits until a handle is ready and calls |callback| with the | |
| 16 // result. If the AsyncWaiter is deleted before the handle is ready, the wait is | |
| 17 // cancelled and the callback will not be called. | |
| 18 class AsyncWaiter { | |
| 19 public: | |
| 20 typedef mojo::Callback<void(MojoResult)> Callback; | |
| 21 | |
| 22 AsyncWaiter(Handle handle, | |
| 23 MojoHandleSignals signals, | |
| 24 const Callback& callback); | |
| 25 ~AsyncWaiter(); | |
| 26 | |
| 27 private: | |
| 28 static void WaitComplete(void* waiter, MojoResult result); | |
| 29 void WaitCompleteInternal(MojoResult result); | |
| 30 | |
| 31 const MojoAsyncWaiter* waiter_; | |
| 32 MojoAsyncWaitID id_; | |
| 33 const Callback callback_; | |
| 34 | |
| 35 MOJO_DISALLOW_COPY_AND_ASSIGN(AsyncWaiter); | |
| 36 }; | |
| 37 | |
| 38 } // namespace mojo | |
| 39 | |
| 40 #endif // MOJO_PUBLIC_CPP_ENVIRONMENT_ASYNC_WAITER_H_ | |
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