system_timer.h

// Copyright 2021 The Pigweed Authors
//
// 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
//
//     https://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 "pw_chrono/system_clock.h"
#include "pw_chrono_backend/system_timer_native.h"
#include "pw_function/function.h"
 
namespace pw::chrono {
 
class SystemTimer {
 public:
  using native_handle_type = backend::NativeSystemTimerHandle;
 
  using ExpiryCallback =
      Function<void(SystemClock::time_point expired_deadline)>;
 
  SystemTimer(ExpiryCallback&& callback);
 
  ~SystemTimer();
 
  SystemTimer(const SystemTimer&) = delete;
  SystemTimer(SystemTimer&&) = delete;
  SystemTimer& operator=(const SystemTimer&) = delete;
  SystemTimer& operator=(SystemTimer&&) = delete;
 
  void InvokeAfter(SystemClock::duration delay);
 
  void InvokeAt(SystemClock::time_point timestamp);
 
  void Cancel();
 
  native_handle_type native_handle();
 
 private:
  backend::NativeSystemTimer native_type_;
};
 
}  // namespace pw::chrono
 
#include "pw_chrono_backend/system_timer_inline.h"