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// 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/public/c/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_
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