Package org.apache.ignite.internal.util

Class GridAtomicInteger

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicInteger

org.apache.ignite.internal.util.GridAtomicInteger

All Implemented Interfaces:

Serializable

public class GridAtomicInteger
extends AtomicInteger

Extended version of AtomicInteger.

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
GridAtomicInteger()	Creates a new AtomicInteger with initial value 0.
GridAtomicInteger(int initVal)	Creates a new AtomicInteger with the given initial value.

Method Summary

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

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

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

GridAtomicInteger

public GridAtomicInteger()

Creates a new AtomicInteger with initial value 0.

GridAtomicInteger

public GridAtomicInteger(int initVal)

Creates a new AtomicInteger with the given initial value.

Parameters:

initVal - the initial value

Method Detail

greaterAndSet

public boolean greaterAndSet(int check,
                             int 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(int check,
                                   int 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(int check,
                          int 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(int check,
                                int 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(int 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(int 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(int 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(int 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(int 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<Integer> p,
                           int 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.