luni/src/main/java/android/system/StructTimespec.java

/*
 * Copyright (C) 2017 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.
 */

package android.system;

import libcore.util.Objects;;

/**
 * Corresponds to C's {@code struct timespec} from {@code <time.h>}.
 */
public final class StructTimespec implements Comparable<StructTimespec> {
  /** Seconds part of time of last data modification. */
  public final long tv_sec; /*time_t*/

  /** Nanoseconds (values are [0, 999999999]). */
  public final long tv_nsec;

  public StructTimespec(long tv_sec, long tv_nsec) {
      this.tv_sec = tv_sec;
      this.tv_nsec = tv_nsec;
      if (tv_nsec < 0 || tv_nsec > 999_999_999) {
          throw new IllegalArgumentException(
                  "tv_nsec value " + tv_nsec + " is not in [0, 999999999]");
      }
  }

  @Override
  public int compareTo(StructTimespec other) {
      if (tv_sec > other.tv_sec) {
          return 1;
      }
      if (tv_sec < other.tv_sec) {
          return -1;
      }
      if (tv_nsec > other.tv_nsec) {
          return 1;
      }
      if (tv_nsec < other.tv_nsec) {
          return -1;
      }
      return 0;
  }

  @Override
  public String toString() {
      return Objects.toString(this);
  }
}