Package org.jitsi.util.concurrent

Class MonotonicAtomicLong

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicLong

org.jitsi.util.concurrent.MonotonicAtomicLong

All Implemented Interfaces:

Serializable

public class MonotonicAtomicLong
extends AtomicLong

Enriches AtomicLong with methods that allow it to be updated only if doing so would increase (or decrease) its value.

Author:

Boris Grozev

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
MonotonicAtomicLong()

Method Summary

Modifier and Type	Method	Description
long	decrease(long newValue)	Updates the value of this AtomicLong if it is smaller than the current value, and returns the actual new value.
long	increase(long newValue)	Updates the value of this AtomicLong if it is bigger than the current value, and returns the actual new value.

Methods inherited from class java.util.concurrent.atomic.AtomicLong

accumulateAndGet, addAndGet, compareAndExchange, compareAndExchangeAcquire, compareAndExchangeRelease, compareAndSet, decrementAndGet, doubleValue, floatValue, get, getAcquire, getAndAccumulate, getAndAdd, getAndDecrement, getAndIncrement, getAndSet, getAndUpdate, getOpaque, getPlain, incrementAndGet, intValue, lazySet, longValue, set, setOpaque, setPlain, setRelease, toString, updateAndGet, weakCompareAndSet, weakCompareAndSetAcquire, weakCompareAndSetPlain, weakCompareAndSetRelease, weakCompareAndSetVolatile

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

MonotonicAtomicLong

public MonotonicAtomicLong()

Method Detail

increase

public long increase(long newValue)

Updates the value of this AtomicLong if it is bigger than the current value, and returns the actual new value. Implemented this way (without AtomicLong.updateAndGet(java.util.function.LongUnaryOperator)) for compatibility with java 1.7.

Parameters:

newValue - the new value to try to set.

Returns:

the actual new value whuch may be greater than or equal to newValue.

decrease

public long decrease(long newValue)

Updates the value of this AtomicLong if it is smaller than the current value, and returns the actual new value. Implemented this way (without AtomicLong.updateAndGet(java.util.function.LongUnaryOperator)) for compatibility with java 1.7.

Parameters:

newValue - the value to try to set.

Returns:

the actual new value which may be less than or equal to newValue.