com.alibaba.csp.sentinel.util

Class TimeUtil

java.lang.Object

com.alibaba.csp.sentinel.util.TimeUtil

All Implemented Interfaces:

Runnable

public final class TimeUtil
extends Object
implements Runnable

Provides millisecond-level time of OS.

Here we should see that not all the time TimeUtil should keep looping 1_000 times every second (Actually about 800/s due to some losses).

 * In idle conditions it just acts as System.currentTimeMillis();
 * In busy conditions (significantly more than 1_000/s) it keeps loop to reduce costs.
 

For detail design and proposals please goto https://github.com/alibaba/Sentinel/issues/1702

Author:

qinan.qn, jason

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TimeUtil.STATE

Constructor Summary

Constructors

Constructor and Description
TimeUtil()

Method Summary

Modifier and Type	Method and Description
Tuple2<Long,Long>	currentQps(long now) Current qps statistics (including reads and writes request) excluding current working time window for accurate result.
static long	currentTimeMillis()
TimeUtil.STATE	getState() Current running state
long	getTime() Current timestamp in milliseconds.
static TimeUtil	instance()
void	run()

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeUtil

public TimeUtil()

Method Detail

run

public void run()

Specified by:

run in interface Runnable

getState

public TimeUtil.STATE getState()

Current running state

Returns:

currentQps

public Tuple2<Long,Long> currentQps(long now)

Current qps statistics (including reads and writes request) excluding current working time window for accurate result.

Parameters:

now -

Returns:

getTime

public long getTime()

Current timestamp in milliseconds.

Returns:

instance

public static TimeUtil instance()

currentTimeMillis

public static long currentTimeMillis()