File steady_clock.hpp

File List > include > libhal > steady_clock.hpp

// Copyright 2023 Google LLC
//
// 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 <cstdint>

#include "error.hpp"
#include "units.hpp"

namespace hal {
class steady_clock
{
public:
  struct frequency_t
  {
    hertz operating_frequency;
  };

  struct uptime_t
  {
    std::uint64_t ticks;
  };

  [[nodiscard]] frequency_t frequency()
  {
    return driver_frequency();
  }

  [[nodiscard]] uptime_t uptime()
  {
    return driver_uptime();
  }

  virtual ~steady_clock() = default;

private:
  virtual frequency_t driver_frequency() = 0;
  virtual uptime_t driver_uptime() = 0;
};
}  // namespace hal