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