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Java™ Platform Standard Ed. 6 |
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java.lang.Object java.util.concurrent.atomic.AtomicLongArray
public class AtomicLongArray
A long
array in which elements may be updated atomically.
See the java.util.concurrent.atomic
package specification
for description of the properties of atomic variables.
Constructor Summary | |
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AtomicLongArray(int length)
Creates a new AtomicLongArray of given length. |
|
AtomicLongArray(long[] array)
Creates a new AtomicLongArray with the same length as, and all elements copied from, the given array. |
Method Summary | |
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long |
addAndGet(int i,
long delta)
Atomically adds the given value to the element at index i . |
boolean |
compareAndSet(int i,
long expect,
long update)
Atomically sets the value to the given updated value if the current value == the expected value. |
long |
decrementAndGet(int i)
Atomically decrements by one the element at index i . |
long |
get(int i)
Gets the current value at position i . |
long |
getAndAdd(int i,
long delta)
Atomically adds the given value to the element at index i . |
long |
getAndDecrement(int i)
Atomically decrements by one the element at index i . |
long |
getAndIncrement(int i)
Atomically increments by one the element at index i . |
long |
getAndSet(int i,
long newValue)
Atomically sets the element at position i to the given value
and returns the old value. |
long |
incrementAndGet(int i)
Atomically increments by one the element at index i . |
void |
lazySet(int i,
long newValue)
Eventually sets the element at position i to the given value. |
int |
length()
Returns the length of the array. |
void |
set(int i,
long newValue)
Sets the element at position i to the given value. |
String |
toString()
Returns the String representation of the current values of array. |
boolean |
weakCompareAndSet(int i,
long expect,
long update)
Atomically sets the value to the given updated value if the current value == the expected value. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public AtomicLongArray(int length)
length
- the length of the arraypublic AtomicLongArray(long[] array)
array
- the array to copy elements from
NullPointerException
- if array is nullMethod Detail |
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public final int length()
public final long get(int i)
i
.
i
- the index
public final void set(int i, long newValue)
i
to the given value.
i
- the indexnewValue
- the new valuepublic final void lazySet(int i, long newValue)
i
to the given value.
i
- the indexnewValue
- the new valuepublic final long getAndSet(int i, long newValue)
i
to the given value
and returns the old value.
i
- the indexnewValue
- the new value
public final boolean compareAndSet(int i, long expect, long update)
==
the expected value.
i
- the indexexpect
- the expected valueupdate
- the new value
public final boolean weakCompareAndSet(int i, long expect, long update)
==
the expected value.
May fail spuriously
and does not provide ordering guarantees, so is only rarely an
appropriate alternative to compareAndSet
.
i
- the indexexpect
- the expected valueupdate
- the new value
public final long getAndIncrement(int i)
i
.
i
- the index
public final long getAndDecrement(int i)
i
.
i
- the index
public final long getAndAdd(int i, long delta)
i
.
i
- the indexdelta
- the value to add
public final long incrementAndGet(int i)
i
.
i
- the index
public final long decrementAndGet(int i)
i
.
i
- the index
public long addAndGet(int i, long delta)
i
.
i
- the indexdelta
- the value to add
public String toString()
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Java™ Platform Standard Ed. 6 |
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Copyright 2006 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.