org.apache.cassandra.utils

Interface TimeSource

All Known Implementing Classes:

SystemTimeSource

public interface TimeSource

Method Summary

Modifier and Type	Method and Description
long	currentTimeMillis()
long	nanoTime()
TimeSource	sleep(long sleepFor, java.util.concurrent.TimeUnit unit) Sleep for the given amount of time.
TimeSource	sleepUninterruptibly(long sleepFor, java.util.concurrent.TimeUnit unit) Sleep for the given amount of time uninterruptibly.

Method Detail

currentTimeMillis

long currentTimeMillis()

Returns:

the current time in milliseconds

nanoTime

long nanoTime()

Returns:

Returns the current time value in nanoseconds.

This method can only be used to measure elapsed time and is not related to any other notion of system or wall-clock time.

sleepUninterruptibly

TimeSource sleepUninterruptibly(long sleepFor,
                                java.util.concurrent.TimeUnit unit)

Sleep for the given amount of time uninterruptibly.

Parameters:

sleepFor - given amout.

unit - time unit

Returns:

The time source itself after the given sleep period.

sleep

TimeSource sleep(long sleepFor,
                 java.util.concurrent.TimeUnit unit)
          throws java.lang.InterruptedException

Sleep for the given amount of time. This operation could interrupted. Hence after returning from this method, it is not guaranteed that the request amount of time has passed.

Parameters:

sleepFor - given amout.

unit - time unit

Returns:

The time source itself after the given sleep period.

Throws:

java.lang.InterruptedException