icing/util/clock.cc

// Copyright (C) 2019 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.

#include "icing/util/clock.h"

#include <chrono>  // NOLINT. Abseil library is not available in AOSP so we have
                   // to use chrono to get current time in milliseconds.
#include <memory>

namespace icing {
namespace lib {

int64_t GetSteadyTimeNanoseconds() {
  return std::chrono::duration_cast<std::chrono::nanoseconds>(
             std::chrono::steady_clock::now().time_since_epoch())
      .count();
}

int64_t GetSteadyTimeMilliseconds() {
  return std::chrono::duration_cast<std::chrono::milliseconds>(
             std::chrono::steady_clock::now().time_since_epoch())
      .count();
}

int64_t Clock::GetSystemTimeMilliseconds() const {
  return std::chrono::duration_cast<std::chrono::milliseconds>(
             std::chrono::system_clock::now().time_since_epoch())
      .count();
}

std::unique_ptr<Timer> Clock::GetNewTimer() const {
  return std::make_unique<Timer>();
}

}  // namespace lib
}  // namespace icing