// clock reading.
type Time struct {
	// wall and ext encode the wall time seconds, wall time nanoseconds,
	// and optional monotonic clock reading in nanoseconds.
	//
	// From high to low bit position, wall encodes a 1-bit flag (hasMonotonic),
	// a 33-bit seconds field, and a 30-bit wall time nanoseconds field.
	// The nanoseconds field is in the range [0, 999999999].
	// If the hasMonotonic bit is 0, then the 33-bit field must be zero

	{"9007199254740993ns", (1<<53 + 1) * Nanosecond},
	// largest duration that can be represented by int64 in nanoseconds
	{"9223372036854775807ns", (1<<63 - 1) * Nanosecond},
	{"9223372036854775.807us", (1<<63 - 1) * Nanosecond},
	{"9223372036s854ms775us807ns", (1<<63 - 1) * Nanosecond},
	{"-9223372036854775808ns", -1 << 63 * Nanosecond},
	{"-9223372036854775.808us", -1 << 63 * Nanosecond},

	bgScanCredit atomic.Int64

	// assistTime is the nanoseconds spent in mutator assists
	// during this cycle. This is updated atomically, and must also
	// be updated atomically even during a STW, because it is read
	// by sysmon. Updates occur in bounded batches, since it is both
	// written and read throughout the cycle.
	assistTime atomic.Int64

	// dedicatedMarkTime is the nanoseconds spent in dedicated mark workers

		OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
	if e != nil {
		return e
	}
	defer Close(h)
	a := Filetime{}
	w := Filetime{}
	if tv[0].Nanoseconds() != 0 {
		a = NsecToFiletime(tv[0].Nanoseconds())
	}
	if tv[0].Nanoseconds() != 0 {
		w = NsecToFiletime(tv[1].Nanoseconds())
	}
	return SetFileTime(h, nil, &a, &w)
}

// This matches the value in os/file_windows.go.
const _UTIME_OMIT = -1

    assertFailsWith<InterruptedIOException> {
      stream.takeHeaders()
    }
    val elapsedNanos = System.nanoTime() - startNanos
    awaitWatchdogIdle()
    // 200ms delta
    assertThat(TimeUnit.NANOSECONDS.toMillis(elapsedNanos).toDouble())
      .isCloseTo(500.0, 200.0)
    assertThat(connection.openStreamCount()).isEqualTo(0)

    // Verify the peer received what was expected.

  @CanIgnoreReturnValue
  public CacheBuilder<K, V> expireAfterWrite(java.time.Duration duration) {
    return expireAfterWrite(toNanosSaturated(duration), TimeUnit.NANOSECONDS);
  }

  /**
   * Specifies that each entry should be automatically removed from the cache once a fixed duration
   * has elapsed after the entry's creation, or the most recent replacement of its value.
   *

      assertThat(expected.message).isEqualTo(
        "stream was reset: PROTOCOL_ERROR",
      )
    }
    val elapsedUntilFailure = System.nanoTime() - executeAtNanos
    assertThat(TimeUnit.NANOSECONDS.toMillis(elapsedUntilFailure).toDouble())
      .isCloseTo(1000.0, 250.0)

    // Confirm a single ping was sent but not acknowledged.
    val logs = testLogHandler.takeAll()

      AsyncCallable<O> callable, Duration delay, ScheduledExecutorService executorService) {
    return scheduleAsync(callable, toNanosSaturated(delay), TimeUnit.NANOSECONDS, executorService);
  }

  /**
   * Schedules {@code callable} on the specified {@code executor}, returning a {@code Future}.
   *

	sleepRatio float64

	// sleepController controls sleepRatio.
	//
	// See sleepRatio for more details.
	sleepController piController

	// controllerCooldown is the time left in nanoseconds during which we avoid
	// using the controller and we hold sleepRatio at a conservative
	// value. Used if the controller's assumptions fail to hold.
	controllerCooldown int64

	return (std >> stdArgShift) & 0xfff
}

func separator(std int) byte {
	if (std >> stdSeparatorShift) == 0 {
		return '.'
	}
	return ','
}

// appendNano appends a fractional second, as nanoseconds, to b
// and returns the result. The nanosec must be within [0, 999999999].
func appendNano(b []byte, nanosec int, std int) []byte {
	trim := std&stdMask == stdFracSecond9
	n := digitsLen(std)