Package org.apache.ignite.internal.util

Class GridAtomicLong

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicLong

org.apache.ignite.internal.util.GridAtomicLong

All Implemented Interfaces:

Serializable

public class GridAtomicLong
extends AtomicLong

Extended version of AtomicLong.

In addition to operations provided in java atomic data structures, this class also adds greater than and less than atomic set operations.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
GridAtomicLong()	Creates a new AtomicLong with initial value 0.
GridAtomicLong(long initVal)	Creates a new AtomicLong with the given initial value.

Method Summary

Modifier and Type	Method	Description
boolean	checkAndSet(IgnitePredicate<Long> p, long update)	Atomically updates value only if passed in predicate returns true.
boolean	greaterAndSet(long check, long update)	Atomically updates value only if check value is greater than current value.
boolean	greaterEqualsAndSet(long check, long update)	Atomically updates value only if check value is greater than or equal to current value.
boolean	lessAndSet(long check, long update)	Atomically updates value only if check value is less than current value.
boolean	lessEqualsAndSet(long check, long update)	Atomically updates value only if check value is less than current value.
boolean	setIfGreater(long update)	Sets value only if it is greater than current one.
boolean	setIfGreaterEquals(long update)	Sets value only if it is greater than or equals to current one.
boolean	setIfLess(long update)	Sets value only if it is less than current one.
boolean	setIfLessEquals(long update)	Sets value only if it is less than or equals to current one.
boolean	setIfNotEquals(long update)	Sets value only if it is not equals to current one.

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

GridAtomicLong

public GridAtomicLong()

Creates a new AtomicLong with initial value 0.

GridAtomicLong

public GridAtomicLong(long initVal)

Creates a new AtomicLong with the given initial value.

Parameters:

initVal - the initial value

Method Detail

greaterAndSet

public boolean greaterAndSet(long check,
                             long update)

Atomically updates value only if check value is greater than current value.

Parameters:

check - Value to check against.

update - Value to set.

Returns:

True if value was set.

greaterEqualsAndSet

public boolean greaterEqualsAndSet(long check,
                                   long update)

Atomically updates value only if check value is greater than or equal to current value.

Parameters:

check - Value to check against.

update - Value to set.

Returns:

True if value was set.

lessAndSet

public boolean lessAndSet(long check,
                          long update)

Atomically updates value only if check value is less than current value.

Parameters:

check - Value to check against.

update - Value to set.

Returns:

True if value was set.

lessEqualsAndSet

public boolean lessEqualsAndSet(long check,
                                long update)

Atomically updates value only if check value is less than current value.

Parameters:

check - Value to check against.

update - Value to set.

Returns:

True if value was set.

setIfGreater

public boolean setIfGreater(long update)

Sets value only if it is greater than current one.

Parameters:

update - Value to set.

Returns:

True if value was set.

setIfGreaterEquals

public boolean setIfGreaterEquals(long update)

Sets value only if it is greater than or equals to current one.

Parameters:

update - Value to set.

Returns:

True if value was set.

setIfLess

public boolean setIfLess(long update)

Sets value only if it is less than current one.

Parameters:

update - Value to set.

Returns:

True if value was set.

setIfLessEquals

public boolean setIfLessEquals(long update)

Sets value only if it is less than or equals to current one.

Parameters:

update - Value to set.

Returns:

True if value was set.

setIfNotEquals

public boolean setIfNotEquals(long update)

Sets value only if it is not equals to current one.

Parameters:

update - Value to set.

Returns:

True if value was set.

checkAndSet

public boolean checkAndSet(IgnitePredicate<Long> p,
                           long update)

Atomically updates value only if passed in predicate returns true.

Parameters:

p - Predicate to check.

update - Value to set.

Returns:

True if value was set.