Function SleepForMicroseconds

deps/google-benchmark/src/sleep.cc:39–56

BENCHMARK_OS_WINDOWS

}
#else  // BENCHMARK_OS_WINDOWS
void SleepForMicroseconds(int microseconds) {
#ifdef BENCHMARK_OS_ZOS
  // z/OS does not support nanosleep. Instead call sleep() and then usleep() to
  // sleep for the remaining microseconds because usleep() will fail if its
  // argument is greater than 1000000.
  div_t sleepTime = div(microseconds, kNumMicrosPerSecond);
  int seconds = sleepTime.quot;
  while (seconds != 0) seconds = sleep(seconds);
  while (usleep(sleepTime.rem) == -1 && errno == EINTR)
    ;
#else
  struct timespec sleep_time;
  sleep_time.tv_sec = microseconds / kNumMicrosPerSecond;
  sleep_time.tv_nsec = (microseconds % kNumMicrosPerSecond) * kNumNanosPerMicro;
  while (nanosleep(&sleep_time, &sleep_time) != 0 && errno == EINTR)
    ;  // Ignore signals and wait for the full interval to elapse.
#endif
}

void SleepForMilliseconds(int milliseconds) {
  SleepForMicroseconds(milliseconds * kNumMicrosPerMilli);