com.github.netty.core.metrics

类 Timer

java.lang.Object

com.github.netty.core.metrics.Timer

所有已实现的接口:

Counting, Metered, Metric, Sampling

public class Timer
extends Object
implements Metered, Sampling

A timer metric which aggregates timing durations and provides duration statistics, plus throughput statistics via Meter.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	Timer.Context A timing context.

构造器概要

构造器

构造器和说明
Timer() Creates a new Timer using an ExponentiallyDecayingReservoir and the default Clock.
Timer(Reservoir reservoir) Creates a new Timer that uses the given Reservoir.
Timer(Reservoir reservoir, Clock clock) Creates a new Timer that uses the given Reservoir and Clock.

方法概要

限定符和类型	方法和说明
long	getCount() Returns the number of events which have been marked.
double	getFifteenMinuteRate() Returns the fifteen-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.
double	getFiveMinuteRate() Returns the five-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.
double	getMeanRate() Returns the mean rate at which events have occurred since the meter was created.
double	getOneMinuteRate() Returns the one-minute exponentially-weighted moving average rate at which events have occurred since the meter was created.
Snapshot	getSnapshot() Returns a snapshot of the values.
Timer.Context	time() Returns a new Timer.Context.
<T> T	time(Callable<T> event) Times and records the duration of event.
void	time(Runnable event) Times and records the duration of event.
void	update(long duration, TimeUnit unit) Adds a recorded duration.

从类继承的方法 java.lang.Object

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

构造器详细资料

Timer

public Timer()

Creates a new Timer using an ExponentiallyDecayingReservoir and the default Clock.

Timer

public Timer(Reservoir reservoir)

Creates a new Timer that uses the given Reservoir.

参数:

reservoir - the Reservoir implementation the timer should use

Timer

public Timer(Reservoir reservoir,
             Clock clock)

Creates a new Timer that uses the given Reservoir and Clock.

参数:

reservoir - the Reservoir implementation the timer should use

clock - the Clock implementation the timer should use

方法详细资料

update

public void update(long duration,
                   TimeUnit unit)

Adds a recorded duration.

参数:

duration - the length of the duration

unit - the scale unit of duration

time

public <T> T time(Callable<T> event)
           throws Exception

Times and records the duration of event.

类型参数:

T - the type of the value returned by event

参数:

event - a Callable whose Callable.call() method implements a process whose duration should be timed

返回:

the value returned by event

抛出:

Exception - if event throws an Exception

time

public void time(Runnable event)

Times and records the duration of event.

参数:

event - a Runnable whose Runnable.run() method implements a process whose duration should be timed

time

public Timer.Context time()

Returns a new Timer.Context.

返回:

a new Timer.Context

另请参阅:

Timer.Context

getCount

public long getCount()

从接口复制的说明: Metered

Returns the number of events which have been marked.

指定者:

getCount 在接口中 Counting

指定者:

getCount 在接口中 Metered

返回:

the number of events which have been marked

getFifteenMinuteRate

public double getFifteenMinuteRate()

从接口复制的说明: Metered

Returns the fifteen-minute exponentially-weighted moving average rate at which events have occurred since the meter was created. This rate has the same exponential decay factor as the fifteen-minute load average in the top Unix command.

指定者:

getFifteenMinuteRate 在接口中 Metered

返回:

the fifteen-minute exponentially-weighted moving average rate at which events have occurred since the meter was created

getFiveMinuteRate

public double getFiveMinuteRate()

从接口复制的说明: Metered

Returns the five-minute exponentially-weighted moving average rate at which events have occurred since the meter was created. This rate has the same exponential decay factor as the five-minute load average in the top Unix command.

指定者:

getFiveMinuteRate 在接口中 Metered

返回:

the five-minute exponentially-weighted moving average rate at which events have occurred since the meter was created

getMeanRate

public double getMeanRate()

从接口复制的说明: Metered

Returns the mean rate at which events have occurred since the meter was created.

指定者:

getMeanRate 在接口中 Metered

返回:

the mean rate at which events have occurred since the meter was created

getOneMinuteRate

public double getOneMinuteRate()

从接口复制的说明: Metered

Returns the one-minute exponentially-weighted moving average rate at which events have occurred since the meter was created. This rate has the same exponential decay factor as the one-minute load average in the top Unix command.

指定者:

getOneMinuteRate 在接口中 Metered

返回:

the one-minute exponentially-weighted moving average rate at which events have occurred since the meter was created

getSnapshot

public Snapshot getSnapshot()

从接口复制的说明: Sampling

Returns a snapshot of the values.

指定者:

getSnapshot 在接口中 Sampling

返回:

a snapshot of the values