org.apache.hadoop.hbase.util

Class Sleeper

java.lang.Object

org.apache.hadoop.hbase.util.Sleeper

@InterfaceAudience.Private
public class Sleeper
extends Object

Sleeper for current thread. Sleeps for passed period. Also checks passed boolean and if interrupted, will return if the flag is set (rather than go back to sleep until its sleep time is up).

Field Summary

Fields

Modifier and Type	Field and Description
private static org.slf4j.Logger	LOG
private static long	MINIMAL_DELTA_FOR_LOGGING
private int	period
private Object	sleepLock
private Stoppable	stopper
private boolean	triggerWake

Constructor Summary

Constructors

Constructor and Description
Sleeper(int sleep, Stoppable stopper)

Method Summary

Modifier and Type	Method and Description
int	getPeriod()
void	skipSleepCycle() If currently asleep, stops sleeping; if not asleep, will skip the next sleep cycle.
void	sleep() Sleep for period.
void	sleep(long startTime) Sleep for period adjusted by passed startTime

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

private static final org.slf4j.Logger LOG

period

private final int period

stopper

private final Stoppable stopper

MINIMAL_DELTA_FOR_LOGGING

private static final long MINIMAL_DELTA_FOR_LOGGING

See Also:

Constant Field Values

sleepLock

private final Object sleepLock

triggerWake

private boolean triggerWake

Constructor Detail

Sleeper

public Sleeper(int sleep,
               Stoppable stopper)

Parameters:

sleep - sleep time in milliseconds

stopper - When Stoppable.isStopped() is true, this thread will cleanup and exit cleanly.

Method Detail

sleep

public void sleep()

Sleep for period.

skipSleepCycle

public void skipSleepCycle()

If currently asleep, stops sleeping; if not asleep, will skip the next sleep cycle.

sleep

public void sleep(long startTime)

Sleep for period adjusted by passed startTime

Parameters:

startTime - Time some task started previous to now. Time to sleep will be docked current time minus passed startTime.

getPeriod

public final int getPeriod()

Returns:

the sleep period in milliseconds