OpenJDK 27 · java.util.concurrent.atomic.AtomicLong · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
private static final long	serialVersionUID Hides java.lang.Number.serialVersionUID.
private static final Unsafe	U
private static final long	VALUE
private volatile long	value

Access	Constructor and Description
public	AtomicLong(long the initial value initialValue) Creates a new AtomicLong with the given initial value.
public	AtomicLong() Creates a new AtomicLong with initial value `0`.

Method Summary

Modifier and Type	Method and Description
public final long	Returns: the updated value accumulateAndGet(long the update value x, LongBinaryOperator a side-effect-free function of two arguments accumulatorFunction) Atomically updates (with memory effects as specified by `VarHandle#compareAndSet`) the current value with the results of applying the given function to the current and given values, returning the updated value.
public final long	Returns: the updated value addAndGet(long the value to add delta) Atomically adds the given value to the current value, with memory effects as specified by `VarHandle#getAndAdd`.
public final long	Returns: the witness value, which will be the same as the expected value if successful compareAndExchange(long the expected value expectedValue, long the new value newValue) Atomically sets the value to `newValue` if the current value, referred to as the witness value, `== expectedValue`, with memory effects as specified by `VarHandle#compareAndExchange`.
public final long	Returns: the witness value, which will be the same as the expected value if successful compareAndExchangeAcquire(long the expected value expectedValue, long the new value newValue) Atomically sets the value to `newValue` if the current value, referred to as the witness value, `== expectedValue`, with memory effects as specified by `VarHandle#compareAndExchangeAcquire`.
public final long	Returns: the witness value, which will be the same as the expected value if successful compareAndExchangeRelease(long the expected value expectedValue, long the new value newValue) Atomically sets the value to `newValue` if the current value, referred to as the witness value, `== expectedValue`, with memory effects as specified by `VarHandle#compareAndExchangeRelease`.
public final boolean	Returns: `true` if successful. False return indicates that the actual value was not equal to the expected value. compareAndSet(long the expected value expectedValue, long the new value newValue) Atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#compareAndSet`.
public final long	Returns: the updated value decrementAndGet() Atomically decrements the current value, with memory effects as specified by `VarHandle#getAndAdd`.
public double	doubleValue() Implements abstract java.lang.Number.doubleValue. Returns the current value of this `AtomicLong` as a `double` after a widening primitive conversion, with memory effects as specified by `VarHandle#getVolatile`.
public float	floatValue() Implements abstract java.lang.Number.floatValue. Returns the current value of this `AtomicLong` as a `float` after a widening primitive conversion, with memory effects as specified by `VarHandle#getVolatile`.
public final long	Returns: the current value get() Returns the current value, with memory effects as specified by `VarHandle#getVolatile`.
public final long	Returns: the value getAcquire() Returns the current value, with memory effects as specified by `VarHandle#getAcquire`.
public final long	Returns: the previous value getAndAccumulate(long the update value x, LongBinaryOperator a side-effect-free function of two arguments accumulatorFunction) Atomically updates (with memory effects as specified by `VarHandle#compareAndSet`) the current value with the results of applying the given function to the current and given values, returning the previous value.
public final long	Returns: the previous value getAndAdd(long the value to add delta) Atomically adds the given value to the current value, with memory effects as specified by `VarHandle#getAndAdd`.
public final long	Returns: the previous value getAndDecrement() Atomically decrements the current value, with memory effects as specified by `VarHandle#getAndAdd`.
public final long	Returns: the previous value getAndIncrement() Atomically increments the current value, with memory effects as specified by `VarHandle#getAndAdd`.
public final long	Returns: the previous value getAndSet(long the new value newValue) Atomically sets the value to `newValue` and returns the old value, with memory effects as specified by `VarHandle#getAndSet`.
public final long	Returns: the previous value getAndUpdate(LongUnaryOperator a side-effect-free function updateFunction) Atomically updates (with memory effects as specified by `VarHandle#compareAndSet`) the current value with the results of applying the given function, returning the previous value.
public final long	Returns: the value getOpaque() Returns the current value, with memory effects as specified by `VarHandle#getOpaque`.
public final long	Returns: the value getPlain() Returns the current value, with memory semantics of reading as if the variable was declared non-`volatile`.
public final long	Returns: the updated value incrementAndGet() Atomically increments the current value, with memory effects as specified by `VarHandle#getAndAdd`.
public int	intValue() Implements abstract java.lang.Number.intValue. Returns the current value of this `AtomicLong` as an `int` after a narrowing primitive conversion, with memory effects as specified by `VarHandle#getVolatile`.
public final void	lazySet(long the new value newValue) Sets the value to `newValue`, with memory effects as specified by `VarHandle#setRelease`.
public long	longValue() Implements abstract java.lang.Number.longValue. Returns the current value of this `AtomicLong` as a `long`, with memory effects as specified by `VarHandle#getVolatile`.
public final void	set(long the new value newValue) Sets the value to `newValue`, with memory effects as specified by `VarHandle#setVolatile`.
public final void	setOpaque(long the new value newValue) Sets the value to `newValue`, with memory effects as specified by `VarHandle#setOpaque`.
public final void	setPlain(long the new value newValue) Sets the value to `newValue`, with memory semantics of setting as if the variable was declared non-`volatile` and non-`final`.
public final void	setRelease(long the new value newValue) Sets the value to `newValue`, with memory effects as specified by `VarHandle#setRelease`.
public String	Returns: the String representation of the current value toString() Overrides java.lang.Object.toString. Returns the String representation of the current value.
public final long	Returns: the updated value updateAndGet(LongUnaryOperator a side-effect-free function updateFunction) Atomically updates (with memory effects as specified by `VarHandle#compareAndSet`) the current value with the results of applying the given function, returning the updated value.
public final boolean	Returns: `true` if successful weakCompareAndSet(long the expected value expectedValue, long the new value newValue) Deprecated since 9. This method has plain memory effects but the method name implies volatile memory effects (see methods such as `compareAndExchange` and `compareAndSet`). Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSetPlain`.
public final boolean	Returns: `true` if successful weakCompareAndSetAcquire(long the expected value expectedValue, long the new value newValue) Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSetAcquire`.
public final boolean	Returns: `true` if successful weakCompareAndSetPlain(long the expected value expectedValue, long the new value newValue) Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSetPlain`.
public final boolean	Returns: `true` if successful weakCompareAndSetRelease(long the expected value expectedValue, long the new value newValue) Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSetRelease`.
public final boolean	Returns: `true` if successful weakCompareAndSetVolatile(long the expected value expectedValue, long the new value newValue) Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSet`.

Inherited from java.lang.Number:: byteValue shortValue

serialVersionUID	back to summary
private static final long serialVersionUID Hides java.lang.Number.serialVersionUID.

U	back to summary
private static final Unsafe U

VALUE	back to summary
private static final long VALUE

value	back to summary
private volatile long value

AtomicLong	back to summary
public AtomicLong(long initialValue) Creates a new AtomicLong with the given initial value. Parameters initialValue:long the initial value

AtomicLong	back to summary
public AtomicLong() Creates a new AtomicLong with initial value `0`.

Method Detail

accumulateAndGet back to summary

accumulateAndGet	back to summary
public final long accumulateAndGet(long x, LongBinaryOperator accumulatorFunction) Atomically updates (with memory effects as specified by `VarHandle#compareAndSet`) the current value 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 as its first argument, and the given update as the second argument. Parameters x:long the update value accumulatorFunction:LongBinaryOperator a side-effect-free function of two arguments Returns:long the updated value Since 1.8

public final long accumulateAndGet(long x, LongBinaryOperator accumulatorFunction)

Atomically updates (with memory effects as specified by VarHandle#compareAndSet) the current value 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 as its first argument, and the given update as the second argument.

Parameters

x:long: the update value
accumulatorFunction:LongBinaryOperator: a side-effect-free function of two arguments

Returns:long

the updated value

Since

1.8

addAndGet back to summary

addAndGet	back to summary
public final long addAndGet(long delta) Atomically adds the given value to the current value, with memory effects as specified by `VarHandle#getAndAdd`. Parameters delta:long the value to add Returns:long the updated value

public final long addAndGet(long delta)

Atomically adds the given value to the current value, with memory effects as specified by VarHandle#getAndAdd.

Parameters

delta:long: the value to add

Returns:long

the updated value

compareAndExchange back to summary

compareAndExchange	back to summary
public final long compareAndExchange(long expectedValue, long newValue) Atomically sets the value to `newValue` if the current value, referred to as the witness value, `== expectedValue`, with memory effects as specified by `VarHandle#compareAndExchange`. Parameters expectedValue:long the expected value newValue:long the new value Returns:long the witness value, which will be the same as the expected value if successful Since 9

public final long compareAndExchange(long expectedValue, long newValue)

Atomically sets the value to newValue if the current value, referred to as the witness value, == expectedValue, with memory effects as specified by VarHandle#compareAndExchange.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:long

the witness value, which will be the same as the expected value if successful

Since

compareAndExchangeAcquire back to summary

compareAndExchangeAcquire	back to summary
public final long compareAndExchangeAcquire(long expectedValue, long newValue) Atomically sets the value to `newValue` if the current value, referred to as the witness value, `== expectedValue`, with memory effects as specified by `VarHandle#compareAndExchangeAcquire`. Parameters expectedValue:long the expected value newValue:long the new value Returns:long the witness value, which will be the same as the expected value if successful Since 9

public final long compareAndExchangeAcquire(long expectedValue, long newValue)

Atomically sets the value to newValue if the current value, referred to as the witness value, == expectedValue, with memory effects as specified by VarHandle#compareAndExchangeAcquire.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:long

the witness value, which will be the same as the expected value if successful

Since

compareAndExchangeRelease back to summary

compareAndExchangeRelease	back to summary
public final long compareAndExchangeRelease(long expectedValue, long newValue) Atomically sets the value to `newValue` if the current value, referred to as the witness value, `== expectedValue`, with memory effects as specified by `VarHandle#compareAndExchangeRelease`. Parameters expectedValue:long the expected value newValue:long the new value Returns:long the witness value, which will be the same as the expected value if successful Since 9

public final long compareAndExchangeRelease(long expectedValue, long newValue)

Atomically sets the value to newValue if the current value, referred to as the witness value, == expectedValue, with memory effects as specified by VarHandle#compareAndExchangeRelease.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:long

the witness value, which will be the same as the expected value if successful

Since

compareAndSet back to summary

compareAndSet	back to summary
public final boolean compareAndSet(long expectedValue, long newValue) Atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#compareAndSet`. Parameters expectedValue:long the expected value newValue:long the new value Returns:boolean `true` if successful. False return indicates that the actual value was not equal to the expected value.

public final boolean compareAndSet(long expectedValue, long newValue)

Atomically sets the value to newValue if the current value == expectedValue, with memory effects as specified by VarHandle#compareAndSet.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:boolean

true if successful. False return indicates that the actual value was not equal to the expected value.

decrementAndGet back to summary

decrementAndGet	back to summary
public final long decrementAndGet() Atomically decrements the current value, with memory effects as specified by `VarHandle#getAndAdd`. Equivalent to `addAndGet(-1)`. Returns:long the updated value

public final long decrementAndGet()

Atomically decrements the current value, with memory effects as specified by VarHandle#getAndAdd.

Equivalent to addAndGet(-1).

Returns:long: the updated value

doubleValue back to summary

doubleValue	back to summary
public double doubleValue() Implements abstract java.lang.Number.doubleValue. Returns the current value of this `AtomicLong` as a `double` after a widening primitive conversion, with memory effects as specified by `VarHandle#getVolatile`. Java Language Specification 5.1.2 Widening Primitive Conversion

public double doubleValue()

Implements abstract java.lang.Number.doubleValue.

Returns the current value of this AtomicLong as a double after a widening primitive conversion, with memory effects as specified by VarHandle#getVolatile.

Java Language Specification: 5.1.2 Widening Primitive Conversion

floatValue back to summary

floatValue	back to summary
public float floatValue() Implements abstract java.lang.Number.floatValue. Returns the current value of this `AtomicLong` as a `float` after a widening primitive conversion, with memory effects as specified by `VarHandle#getVolatile`. Java Language Specification 5.1.2 Widening Primitive Conversion

public float floatValue()

Implements abstract java.lang.Number.floatValue.

Returns the current value of this AtomicLong as a float after a widening primitive conversion, with memory effects as specified by VarHandle#getVolatile.

Java Language Specification: 5.1.2 Widening Primitive Conversion

get back to summary

get	back to summary
public final long get() Returns the current value, with memory effects as specified by `VarHandle#getVolatile`. Returns:long the current value

public final long get()

Returns the current value, with memory effects as specified by VarHandle#getVolatile.

Returns:long: the current value

getAcquire back to summary

getAcquire	back to summary
public final long getAcquire() Returns the current value, with memory effects as specified by `VarHandle#getAcquire`. Returns:long the value Since 9

public final long getAcquire()

Returns the current value, with memory effects as specified by VarHandle#getAcquire.

Returns:long: the value
Since: 9

getAndAccumulate back to summary

getAndAccumulate	back to summary
public final long getAndAccumulate(long x, LongBinaryOperator accumulatorFunction) Atomically updates (with memory effects as specified by `VarHandle#compareAndSet`) the current value 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 as its first argument, and the given update as the second argument. Parameters x:long the update value accumulatorFunction:LongBinaryOperator a side-effect-free function of two arguments Returns:long the previous value Since 1.8

public final long getAndAccumulate(long x, LongBinaryOperator accumulatorFunction)

Atomically updates (with memory effects as specified by VarHandle#compareAndSet) the current value 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 as its first argument, and the given update as the second argument.

Parameters

x:long: the update value
accumulatorFunction:LongBinaryOperator: a side-effect-free function of two arguments

Returns:long

the previous value

Since

1.8

getAndAdd back to summary

getAndAdd	back to summary
public final long getAndAdd(long delta) Atomically adds the given value to the current value, with memory effects as specified by `VarHandle#getAndAdd`. Parameters delta:long the value to add Returns:long the previous value

public final long getAndAdd(long delta)

Atomically adds the given value to the current value, with memory effects as specified by VarHandle#getAndAdd.

Parameters

delta:long: the value to add

Returns:long

the previous value

getAndDecrement back to summary

getAndDecrement	back to summary
public final long getAndDecrement() Atomically decrements the current value, with memory effects as specified by `VarHandle#getAndAdd`. Equivalent to `getAndAdd(-1)`. Returns:long the previous value

public final long getAndDecrement()

Atomically decrements the current value, with memory effects as specified by VarHandle#getAndAdd.

Equivalent to getAndAdd(-1).

Returns:long: the previous value

getAndIncrement back to summary

getAndIncrement	back to summary
public final long getAndIncrement() Atomically increments the current value, with memory effects as specified by `VarHandle#getAndAdd`. Equivalent to `getAndAdd(1)`. Returns:long the previous value

public final long getAndIncrement()

Atomically increments the current value, with memory effects as specified by VarHandle#getAndAdd.

Equivalent to getAndAdd(1).

Returns:long: the previous value

getAndSet back to summary

getAndSet	back to summary
public final long getAndSet(long newValue) Atomically sets the value to `newValue` and returns the old value, with memory effects as specified by `VarHandle#getAndSet`. Parameters newValue:long the new value Returns:long the previous value

public final long getAndSet(long newValue)

Atomically sets the value to newValue and returns the old value, with memory effects as specified by VarHandle#getAndSet.

Parameters

newValue:long: the new value

Returns:long

the previous value

getAndUpdate back to summary

getAndUpdate	back to summary
public final long getAndUpdate(LongUnaryOperator updateFunction) Atomically updates (with memory effects as specified by `VarHandle#compareAndSet`) the current value 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. Parameters updateFunction:LongUnaryOperator a side-effect-free function Returns:long the previous value Since 1.8

public final long getAndUpdate(LongUnaryOperator updateFunction)

Atomically updates (with memory effects as specified by VarHandle#compareAndSet) the current value 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.

Parameters

updateFunction:LongUnaryOperator: a side-effect-free function

Returns:long

the previous value

Since

1.8

getOpaque back to summary

getOpaque	back to summary
public final long getOpaque() Returns the current value, with memory effects as specified by `VarHandle#getOpaque`. Returns:long the value Since 9

public final long getOpaque()

Returns the current value, with memory effects as specified by VarHandle#getOpaque.

Returns:long: the value
Since: 9

getPlain back to summary

getPlain	back to summary
public final long getPlain() Returns the current value, with memory semantics of reading as if the variable was declared non-`volatile`. Returns:long the value Since 9

public final long getPlain()

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

Returns:long: the value
Since: 9

incrementAndGet back to summary

incrementAndGet	back to summary
public final long incrementAndGet() Atomically increments the current value, with memory effects as specified by `VarHandle#getAndAdd`. Equivalent to `addAndGet(1)`. Returns:long the updated value

public final long incrementAndGet()

Atomically increments the current value, with memory effects as specified by VarHandle#getAndAdd.

Equivalent to addAndGet(1).

Returns:long: the updated value

intValue back to summary

intValue	back to summary
public int intValue() Implements abstract java.lang.Number.intValue. Returns the current value of this `AtomicLong` as an `int` after a narrowing primitive conversion, with memory effects as specified by `VarHandle#getVolatile`. Java Language Specification 5.1.3 Narrowing Primitive Conversion

public int intValue()

Implements abstract java.lang.Number.intValue.

Returns the current value of this AtomicLong as an int after a narrowing primitive conversion, with memory effects as specified by VarHandle#getVolatile.

Java Language Specification: 5.1.3 Narrowing Primitive Conversion

lazySet back to summary

lazySet	back to summary
public final void lazySet(long newValue) Sets the value to `newValue`, with memory effects as specified by `VarHandle#setRelease`. Parameters newValue:long the new value Since 1.6

public final void lazySet(long newValue)

Sets the value to newValue, with memory effects as specified by VarHandle#setRelease.

Parameters

newValue:long: the new value

Since

1.6

longValue back to summary

longValue	back to summary
public long longValue() Implements abstract java.lang.Number.longValue. Returns the current value of this `AtomicLong` as a `long`, with memory effects as specified by `VarHandle#getVolatile`. Equivalent to `get()`.

public long longValue()

Implements abstract java.lang.Number.longValue.

Returns the current value of this AtomicLong as a long, with memory effects as specified by VarHandle#getVolatile. Equivalent to get().

set back to summary

set	back to summary
public final void set(long newValue) Sets the value to `newValue`, with memory effects as specified by `VarHandle#setVolatile`. Parameters newValue:long the new value

public final void set(long newValue)

Sets the value to newValue, with memory effects as specified by VarHandle#setVolatile.

Parameters

newValue:long: the new value

setOpaque back to summary

setOpaque	back to summary
public final void setOpaque(long newValue) Sets the value to `newValue`, with memory effects as specified by `VarHandle#setOpaque`. Parameters newValue:long the new value Since 9

public final void setOpaque(long newValue)

Sets the value to newValue, with memory effects as specified by VarHandle#setOpaque.

Parameters

newValue:long: the new value

Since

setPlain back to summary

setPlain	back to summary
public final void setPlain(long newValue) Sets the value to `newValue`, with memory semantics of setting as if the variable was declared non-`volatile` and non-`final`. Parameters newValue:long the new value Since 9

public final void setPlain(long newValue)

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

Parameters

newValue:long: the new value

Since

setRelease back to summary

setRelease	back to summary
public final void setRelease(long newValue) Sets the value to `newValue`, with memory effects as specified by `VarHandle#setRelease`. Parameters newValue:long the new value Since 9

public final void setRelease(long newValue)

Sets the value to newValue, with memory effects as specified by VarHandle#setRelease.

Parameters

newValue:long: the new value

Since

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Returns the String representation of the current value. Returns:String the String representation of the current value

toString

back to summary

public String toString()

Overrides java.lang.Object.toString.

Returns the String representation of the current value.

Returns:String: the String representation of the current value

updateAndGet back to summary

updateAndGet	back to summary
public final long updateAndGet(LongUnaryOperator updateFunction) Atomically updates (with memory effects as specified by `VarHandle#compareAndSet`) the current value 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. Parameters updateFunction:LongUnaryOperator a side-effect-free function Returns:long the updated value Since 1.8

public final long updateAndGet(LongUnaryOperator updateFunction)

Atomically updates (with memory effects as specified by VarHandle#compareAndSet) the current value 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.

Parameters

updateFunction:LongUnaryOperator: a side-effect-free function

Returns:long

the updated value

Since

1.8

weakCompareAndSet back to summary

weakCompareAndSet	back to summary
public final boolean weakCompareAndSet(long expectedValue, long newValue) Deprecated since 9. This method has plain memory effects but the method name implies volatile memory effects (see methods such as `compareAndExchange` and `compareAndSet`). To avoid confusion over plain or volatile memory effects it is recommended that the method `weakCompareAndSetPlain` be used instead. Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSetPlain`. Parameters expectedValue:long the expected value newValue:long the new value Returns:boolean `true` if successful Annotations @Deprecated since:9 See Also `weakCompareAndSetPlain`

public final boolean weakCompareAndSet(long expectedValue, long newValue)

Deprecated

since 9.

This method has plain memory effects but the method name implies volatile memory effects (see methods such as compareAndExchange and compareAndSet). To avoid confusion over plain or volatile memory effects it is recommended that the method weakCompareAndSetPlain be used instead.

Possibly atomically sets the value to newValue if the current value == expectedValue, with memory effects as specified by VarHandle#weakCompareAndSetPlain.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:boolean

true if successful

Annotations

@Deprecated
since:9

See Also

weakCompareAndSetPlain

weakCompareAndSetAcquire back to summary

weakCompareAndSetAcquire	back to summary
public final boolean weakCompareAndSetAcquire(long expectedValue, long newValue) Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSetAcquire`. Parameters expectedValue:long the expected value newValue:long the new value Returns:boolean `true` if successful Since 9

public final boolean weakCompareAndSetAcquire(long expectedValue, long newValue)

Possibly atomically sets the value to newValue if the current value == expectedValue, with memory effects as specified by VarHandle#weakCompareAndSetAcquire.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:boolean

true if successful

Since

weakCompareAndSetPlain back to summary

weakCompareAndSetPlain	back to summary
public final boolean weakCompareAndSetPlain(long expectedValue, long newValue) Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSetPlain`. Parameters expectedValue:long the expected value newValue:long the new value Returns:boolean `true` if successful Since 9

public final boolean weakCompareAndSetPlain(long expectedValue, long newValue)

Possibly atomically sets the value to newValue if the current value == expectedValue, with memory effects as specified by VarHandle#weakCompareAndSetPlain.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:boolean

true if successful

Since

weakCompareAndSetRelease back to summary

weakCompareAndSetRelease	back to summary
public final boolean weakCompareAndSetRelease(long expectedValue, long newValue) Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSetRelease`. Parameters expectedValue:long the expected value newValue:long the new value Returns:boolean `true` if successful Since 9

public final boolean weakCompareAndSetRelease(long expectedValue, long newValue)

Possibly atomically sets the value to newValue if the current value == expectedValue, with memory effects as specified by VarHandle#weakCompareAndSetRelease.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:boolean

true if successful

Since

weakCompareAndSetVolatile back to summary

weakCompareAndSetVolatile	back to summary
public final boolean weakCompareAndSetVolatile(long expectedValue, long newValue) Possibly atomically sets the value to `newValue` if the current value `== expectedValue`, with memory effects as specified by `VarHandle#weakCompareAndSet`. Parameters expectedValue:long the expected value newValue:long the new value Returns:boolean `true` if successful Since 9

public final boolean weakCompareAndSetVolatile(long expectedValue, long newValue)

Possibly atomically sets the value to newValue if the current value == expectedValue, with memory effects as specified by VarHandle#weakCompareAndSet.

Parameters

expectedValue:long: the expected value
newValue:long: the new value

Returns:boolean

true if successful

Since

public Class AtomicLong

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail