Package io.deephaven.base.stats

Class ThreadSafeCounter

java.lang.Object

io.deephaven.base.stats.Value

io.deephaven.base.stats.ThreadSafeValue

io.deephaven.base.stats.ThreadSafeCounter

public class ThreadSafeCounter
extends ThreadSafeValue

A statistic where each value represents an additive quantity, and thus the sum of the values does have meaning. Examples include event counts and processing duration. If the sum of the values does not have a useful interpretation, use State instead.

• Value.increment(long) updates the counter, recording a single value. This is the most common usage. (ThreadSafeValue.sample(long) does exactly the same thing but is a poor verb to use with a Counter.)

Field Summary

Fields

Modifier and Type	Field	Description
static final LongFunction<ThreadSafeCounter>	FACTORY

Fields inherited from class io.deephaven.base.stats.Value

history, last, max, min, n, sum, sum2

Constructor Summary

Constructors

Constructor	Description
ThreadSafeCounter(long now)

Method Summary

Modifier and Type	Method	Description
char	getTypeTag()

Methods inherited from class io.deephaven.base.stats.ThreadSafeValue

sample, toString

Methods inherited from class io.deephaven.base.stats.Value

alwaysUpdated, getHistory, getLast, getMax, getMin, getN, getSum, getSum2, increment, reset, update

Methods inherited from class java.lang.Object

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

Field Details

FACTORY

public static final LongFunction<ThreadSafeCounter> FACTORY

Constructor Details

ThreadSafeCounter

public ThreadSafeCounter(long now)

Method Details

getTypeTag

public char getTypeTag()

Specified by:

getTypeTag in class Value