AtomicReferenceArray

AtomicReferenceArray

public AtomicReferenceArray (E[] array)

Creates a new AtomicReferenceArray with the same length as, and all elements copied from, the given array.

AtomicReferenceArray

public AtomicReferenceArray (int length)

Creates a new AtomicReferenceArray of the given length, with all elements initially null.

accumulateAndGet

public final E accumulateAndGet (int i, 
                E x, 
                BinaryOperator<E> accumulatorFunction)

Atomically updates (with memory effects as specified by VarHandle.compareAndSet(Object)) the element at index i with the results of applying the given function to the current and given values, returning the updated value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads. The function is applied with the current value of the element at index i as its first argument, and the given update as the second argument.

compareAndExchange

public final E compareAndExchange (int i, 
                E expectedValue, 
                E newValue)

Atomically sets the element at index i to newValue if the element's current value, referred to as the witness value, == expectedValue, with memory effects as specified by VarHandle.compareAndExchange.

compareAndExchangeAcquire

public final E compareAndExchangeAcquire (int i, 
                E expectedValue, 
                E newValue)

Atomically sets the element at index i to newValue if the element's current value, referred to as the witness value, == expectedValue, with memory effects as specified by VarHandle.compareAndExchangeAcquire.

compareAndExchangeRelease

public final E compareAndExchangeRelease (int i, 
                E expectedValue, 
                E newValue)

Atomically sets the element at index i to newValue if the element's current value, referred to as the witness value, == expectedValue, with memory effects as specified by VarHandle.compareAndExchangeRelease.

compareAndSet

public final boolean compareAndSet (int i, 
                E expectedValue, 
                E newValue)

Atomically sets the element at index i to newValue if the element's current value == expectedValue, with memory effects as specified by VarHandle.compareAndSet.

get

public final E get (int i)

Returns the current value of the element at index i, with memory effects as specified by VarHandle.getVolatile.

getAcquire

public final E getAcquire (int i)

Returns the current value of the element at index i, with memory effects as specified by VarHandle.getAcquire.

getAndAccumulate

public final E getAndAccumulate (int i, 
                E x, 
                BinaryOperator<E> accumulatorFunction)

Atomically updates (with memory effects as specified by VarHandle.compareAndSet(Object)) the element at index i with the results of applying the given function to the current and given values, returning the previous value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads. The function is applied with the current value of the element at index i as its first argument, and the given update as the second argument.

getAndSet

public final E getAndSet (int i, 
                E newValue)

Atomically sets the element at index i to newValue and returns the old value, with memory effects as specified by VarHandle.getAndSet.

getAndUpdate

public final E getAndUpdate (int i, 
                UnaryOperator<E> updateFunction)

Atomically updates (with memory effects as specified by VarHandle.compareAndSet(Object)) the element at index i with the results of applying the given function, returning the previous value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads.

getOpaque

public final E getOpaque (int i)

Returns the current value of the element at index i, with memory effects as specified by VarHandle.getOpaque.

getPlain

public final E getPlain (int i)

Returns the current value of the element at index i, with memory semantics of reading as if the variable was declared non-volatile.

lazySet

public final void lazySet (int i, 
                E newValue)

Sets the element at index i to newValue, with memory effects as specified by VarHandle.setRelease.

length

public final int length ()

Returns the length of the array.

set

public final void set (int i, 
                E newValue)

Sets the element at index i to newValue, with memory effects as specified by VarHandle.setVolatile.

setOpaque

public final void setOpaque (int i, 
                E newValue)

Sets the element at index i to newValue, with memory effects as specified by VarHandle.setOpaque.

setPlain

public final void setPlain (int i, 
                E newValue)

Sets the element at index i to newValue, with memory semantics of setting as if the variable was declared non-volatile and non-final.

setRelease

public final void setRelease (int i, 
                E newValue)

Sets the element at index i to newValue, with memory effects as specified by VarHandle.setRelease.

toString

public String toString ()

Returns the String representation of the current values of array.

updateAndGet

public final E updateAndGet (int i, 
                UnaryOperator<E> updateFunction)

Atomically updates (with memory effects as specified by VarHandle.compareAndSet(Object)) the element at index i with the results of applying the given function, returning the updated value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads.

weakCompareAndSet

public final boolean weakCompareAndSet (int i, 
                E expectedValue, 
                E newValue)

This method was deprecated in API level 33.
This method has plain memory effects but the method name implies volatile memory effects (see methods such as compareAndExchange(int, E, E) and compareAndSet(int, E, E)). To avoid confusion over plain or volatile memory effects it is recommended that the method weakCompareAndSetPlain(int, E, E) be used instead.

Possibly atomically sets the element at index i to newValue if the element's current value == expectedValue, with memory effects as specified by VarHandle.weakCompareAndSetPlain.

weakCompareAndSetAcquire

public final boolean weakCompareAndSetAcquire (int i, 
                E expectedValue, 
                E newValue)

Possibly atomically sets the element at index i to newValue if the element's current value == expectedValue, with memory effects as specified by VarHandle.weakCompareAndSetAcquire.

weakCompareAndSetPlain

public final boolean weakCompareAndSetPlain (int i, 
                E expectedValue, 
                E newValue)

Possibly atomically sets the element at index i to newValue if the element's current value == expectedValue, with memory effects as specified by VarHandle.weakCompareAndSetPlain.

weakCompareAndSetRelease

public final boolean weakCompareAndSetRelease (int i, 
                E expectedValue, 
                E newValue)

Possibly atomically sets the element at index i to newValue if the element's current value == expectedValue, with memory effects as specified by VarHandle.weakCompareAndSetRelease.

weakCompareAndSetVolatile

public final boolean weakCompareAndSetVolatile (int i, 
                E expectedValue, 
                E newValue)

Possibly atomically sets the element at index i to newValue if the element's current value == expectedValue, with memory effects as specified by VarHandle.weakCompareAndSet.