Serializable
public class AtomicLongArray extends Object implements Serializable
long
array in which elements may be updated atomically.
See the VarHandle
specification for descriptions of the
properties of atomic accesses.Constructor | Description |
---|---|
AtomicLongArray(int length) |
Creates a new AtomicLongArray of the given length, with all
elements initially zero.
|
AtomicLongArray(long[] array) |
Creates a new AtomicLongArray with the same length as, and
all elements copied from, the given array.
|
Modifier and Type | Method | Description |
---|---|---|
long |
accumulateAndGet(int i,
long x,
LongBinaryOperator accumulatorFunction) |
Atomically updates the element at index
i with the
results of applying the given function to the current and given
values, returning the updated value. |
long |
addAndGet(int i,
long delta) |
Atomically adds the given value to the element at index
i ,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...) . |
long |
compareAndExchange(int i,
long expectedValue,
long 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(java.lang.Object...) . |
long |
compareAndExchangeAcquire(int i,
long expectedValue,
long 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(java.lang.Object...) . |
long |
compareAndExchangeRelease(int i,
long expectedValue,
long 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(java.lang.Object...) . |
boolean |
compareAndSet(int i,
long expectedValue,
long 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(java.lang.Object...) . |
long |
decrementAndGet(int i) |
Atomically decrements the value of the element at index
i ,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...) . |
long |
get(int i) |
Returns the current value of the element at index
i ,
with memory effects as specified by VarHandle.getVolatile(java.lang.Object...) . |
long |
getAcquire(int i) |
Returns the current value of the element at index
i ,
with memory effects as specified by VarHandle.getAcquire(java.lang.Object...) . |
long |
getAndAccumulate(int i,
long x,
LongBinaryOperator accumulatorFunction) |
Atomically updates the element at index
i with the
results of applying the given function to the current and given
values, returning the previous value. |
long |
getAndAdd(int i,
long delta) |
Atomically adds the given value to the element at index
i ,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...) . |
long |
getAndDecrement(int i) |
Atomically decrements the value of the element at index
i ,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...) . |
long |
getAndIncrement(int i) |
Atomically increments the value of the element at index
i ,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...) . |
long |
getAndSet(int i,
long newValue) |
Atomically sets the element at index
i to
newValue and returns the old value,
with memory effects as specified by VarHandle.getAndSet(java.lang.Object...) . |
long |
getAndUpdate(int i,
LongUnaryOperator updateFunction) |
Atomically updates the element at index
i with the results
of applying the given function, returning the previous value. |
long |
getOpaque(int i) |
Returns the current value of the element at index
i ,
with memory effects as specified by VarHandle.getOpaque(java.lang.Object...) . |
long |
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 . |
long |
incrementAndGet(int i) |
Atomically increments the value of the element at index
i ,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...) . |
void |
lazySet(int i,
long newValue) |
Sets the element at index
i to newValue ,
with memory effects as specified by VarHandle.setRelease(java.lang.Object...) . |
int |
length() |
Returns the length of the array.
|
void |
set(int i,
long newValue) |
Sets the element at index
i to newValue ,
with memory effects as specified by VarHandle.setVolatile(java.lang.Object...) . |
void |
setOpaque(int i,
long newValue) |
Sets the element at index
i to newValue ,
with memory effects as specified by VarHandle.setOpaque(java.lang.Object...) . |
void |
setPlain(int i,
long 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 . |
void |
setRelease(int i,
long newValue) |
Sets the element at index
i to newValue ,
with memory effects as specified by VarHandle.setRelease(java.lang.Object...) . |
String |
toString() |
Returns the String representation of the current values of array.
|
long |
updateAndGet(int i,
LongUnaryOperator updateFunction) |
Atomically updates the element at index
i with the results
of applying the given function, returning the updated value. |
boolean |
weakCompareAndSet(int i,
long expectedValue,
long 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(java.lang.Object...) . |
boolean |
weakCompareAndSetAcquire(int i,
long expectedValue,
long 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(java.lang.Object...) . |
boolean |
weakCompareAndSetRelease(int i,
long expectedValue,
long 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(java.lang.Object...) . |
boolean |
weakCompareAndSetVolatile(int i,
long expectedValue,
long 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(java.lang.Object...) . |
public AtomicLongArray(int length)
length
- the length of the arraypublic AtomicLongArray(long[] array)
array
- the array to copy elements fromNullPointerException
- if array is nullpublic final int length()
public final long get(int i)
i
,
with memory effects as specified by VarHandle.getVolatile(java.lang.Object...)
.i
- the indexpublic final void set(int i, long newValue)
i
to newValue
,
with memory effects as specified by VarHandle.setVolatile(java.lang.Object...)
.i
- the indexnewValue
- the new valuepublic final void lazySet(int i, long newValue)
i
to newValue
,
with memory effects as specified by VarHandle.setRelease(java.lang.Object...)
.i
- the indexnewValue
- the new valuepublic final long getAndSet(int i, long newValue)
i
to
newValue
and returns the old value,
with memory effects as specified by VarHandle.getAndSet(java.lang.Object...)
.i
- the indexnewValue
- the new valuepublic final boolean compareAndSet(int i, long expectedValue, long newValue)
i
to newValue
if the element's current value == expectedValue
,
with memory effects as specified by VarHandle.compareAndSet(java.lang.Object...)
.i
- the indexexpectedValue
- the expected valuenewValue
- the new valuetrue
if successful. False return indicates that
the actual value was not equal to the expected value.public final boolean weakCompareAndSet(int i, long expectedValue, long newValue)
i
to
newValue
if the element's current value == expectedValue
,
with memory effects as specified by VarHandle.weakCompareAndSetPlain(java.lang.Object...)
.i
- the indexexpectedValue
- the expected valuenewValue
- the new valuetrue
if successfulpublic final long getAndIncrement(int i)
i
,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...)
.
Equivalent to getAndAdd(i, 1)
.
i
- the indexpublic final long getAndDecrement(int i)
i
,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...)
.
Equivalent to getAndAdd(i, -1)
.
i
- the indexpublic final long getAndAdd(int i, long delta)
i
,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...)
.i
- the indexdelta
- the value to addpublic final long incrementAndGet(int i)
i
,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...)
.
Equivalent to addAndGet(i, 1)
.
i
- the indexpublic final long decrementAndGet(int i)
i
,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...)
.
Equivalent to addAndGet(i, -1)
.
i
- the indexpublic long addAndGet(int i, long delta)
i
,
with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...)
.i
- the indexdelta
- the value to addpublic final long getAndUpdate(int i, LongUnaryOperator updateFunction)
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.i
- the indexupdateFunction
- a side-effect-free functionpublic final long updateAndGet(int i, LongUnaryOperator updateFunction)
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.i
- the indexupdateFunction
- a side-effect-free functionpublic final long getAndAccumulate(int i, long x, LongBinaryOperator accumulatorFunction)
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.i
- the indexx
- the update valueaccumulatorFunction
- a side-effect-free function of two argumentspublic final long accumulateAndGet(int i, long x, LongBinaryOperator accumulatorFunction)
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.i
- the indexx
- the update valueaccumulatorFunction
- a side-effect-free function of two argumentspublic String toString()
public final long getPlain(int i)
i
,
with memory semantics of reading as if the variable was declared
non-volatile
.i
- the indexpublic final void setPlain(int i, long newValue)
i
to newValue
,
with memory semantics of setting as if the variable was
declared non-volatile
and non-final
.i
- the indexnewValue
- the new valuepublic final long getOpaque(int i)
i
,
with memory effects as specified by VarHandle.getOpaque(java.lang.Object...)
.i
- the indexpublic final void setOpaque(int i, long newValue)
i
to newValue
,
with memory effects as specified by VarHandle.setOpaque(java.lang.Object...)
.i
- the indexnewValue
- the new valuepublic final long getAcquire(int i)
i
,
with memory effects as specified by VarHandle.getAcquire(java.lang.Object...)
.i
- the indexpublic final void setRelease(int i, long newValue)
i
to newValue
,
with memory effects as specified by VarHandle.setRelease(java.lang.Object...)
.i
- the indexnewValue
- the new valuepublic final long compareAndExchange(int i, long expectedValue, long newValue)
i
to newValue
if the element's current value, referred to as the witness
value, == expectedValue
,
with memory effects as specified by
VarHandle.compareAndExchange(java.lang.Object...)
.i
- the indexexpectedValue
- the expected valuenewValue
- the new valuepublic final long compareAndExchangeAcquire(int i, long expectedValue, long newValue)
i
to newValue
if the element's current value, referred to as the witness
value, == expectedValue
,
with memory effects as specified by
VarHandle.compareAndExchangeAcquire(java.lang.Object...)
.i
- the indexexpectedValue
- the expected valuenewValue
- the new valuepublic final long compareAndExchangeRelease(int i, long expectedValue, long newValue)
i
to newValue
if the element's current value, referred to as the witness
value, == expectedValue
,
with memory effects as specified by
VarHandle.compareAndExchangeRelease(java.lang.Object...)
.i
- the indexexpectedValue
- the expected valuenewValue
- the new valuepublic final boolean weakCompareAndSetVolatile(int i, long expectedValue, long newValue)
i
to
newValue
if the element's current value == expectedValue
,
with memory effects as specified by
VarHandle.weakCompareAndSet(java.lang.Object...)
.i
- the indexexpectedValue
- the expected valuenewValue
- the new valuetrue
if successfulpublic final boolean weakCompareAndSetAcquire(int i, long expectedValue, long newValue)
i
to
newValue
if the element's current value == expectedValue
,
with memory effects as specified by
VarHandle.weakCompareAndSetAcquire(java.lang.Object...)
.i
- the indexexpectedValue
- the expected valuenewValue
- the new valuetrue
if successfulpublic final boolean weakCompareAndSetRelease(int i, long expectedValue, long newValue)
i
to
newValue
if the element's current value == expectedValue
,
with memory effects as specified by
VarHandle.weakCompareAndSetRelease(java.lang.Object...)
.i
- the indexexpectedValue
- the expected valuenewValue
- the new valuetrue
if successful Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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DRAFT 9-internal+0-2016-10-04-161205.jjg.dev.8159855.tools-spi