Function SleepABit

cpp/src/arrow/testing/gtest_util.cc:776–796

#ifdef _WIN32
void SleepABit() {
  LARGE_INTEGER freq, start, now;
  QueryPerformanceFrequency(&freq);
  // 1 ms
  auto desired = freq.QuadPart / 1000;
  if (desired <= 0) {
    // Fallback to STL sleep if high resolution clock not available, tests may fail,
    // shouldn't really happen
    SleepFor(1e-3);
    return;
  }
  QueryPerformanceCounter(&start);
  while (true) {
    std::this_thread::yield();
    QueryPerformanceCounter(&now);
    auto elapsed = now.QuadPart - start.QuadPart;
    if (elapsed > desired) {
      break;
    }
  }
}
#else
// std::this_thread::sleep_for should be high enough resolution on non-Windows systems
void SleepABit() { SleepFor(1e-3); }