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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <android-base/macros.h>
#include <android/hardware/automotive/can/1.0/ICloseHandle.h>
namespace android::hardware::automotive::can::V1_0::implementation {
/** Generic ICloseHandle implementation ignoring double-close events. */
struct CloseHandle : public ICloseHandle {
using Callback = std::function<void()>;
/**
* Create a handle with a callback.
*
* The callback is guaranteed to be called exactly once.
*
* \param callback Called on the first close() call, or on destruction of the handle
*/
CloseHandle(Callback callback = nullptr);
virtual ~CloseHandle();
Return<void> close() override;
private:
const Callback mCallback;
std::atomic<bool> mIsClosed = false;
DISALLOW_COPY_AND_ASSIGN(CloseHandle);
};
} // namespace android::hardware::automotive::can::V1_0::implementation
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