interrupt_listener.h

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/*
 * Copyright (C) 2024 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 <functional>
#include <memory>
 
#include "cuttlefish/common/libs/utils/result.h"
 
namespace cuttlefish {
 
using InterruptListener = std::function<void(int)>;
 
class InterruptListenerHandle;
Result<std::unique_ptr<InterruptListenerHandle>> PushInterruptListener(
    InterruptListener listener);
 
class InterruptListenerHandle {
 public:
  ~InterruptListenerHandle();
 
  InterruptListenerHandle(const InterruptListenerHandle&) = delete;
  InterruptListenerHandle& operator=(const InterruptListenerHandle&) = delete;
 
  InterruptListenerHandle(InterruptListenerHandle&& other) = delete;
  InterruptListenerHandle& operator=(InterruptListenerHandle&& other) = delete;
 
 private:
  friend Result<std::unique_ptr<InterruptListenerHandle>> PushInterruptListener(
      InterruptListener);
  InterruptListenerHandle(size_t listener_index)
      : listener_index_(listener_index) {}
  const size_t listener_index_;
};
 
}  // namespace cuttlefish