| |
|
| java.lang.Object
 java.util.concurrent.atomic.AtomicLongArray
| AtomicLongArray | | public class AtomicLongArray implements java.io.Serializable(Code) | | 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.
since:
1.5
author:
Doug Lea |
| Constructor Summary | |
| public | AtomicLongArray(int length)
Creates a new AtomicLongArray of given length. | | public | AtomicLongArray(long[] array)
Creates a new AtomicLongArray with the same length as, and
all elements copied from, the given array. |
| Method Summary | |
| public long | addAndGet(int i, long delta)
Atomically adds the given value to the element at index
i . | | final public boolean | compareAndSet(int i, long expect, long update)
Atomically sets the value to the given updated value
if the current value
== the expected value.
Parameters:
i - the index
Parameters:
expect - the expected value
Parameters:
update - the new value true if successful. | | final public long | decrementAndGet(int i)
Atomically decrements by one the element at index
i . | | final public long | get(int i)
Gets the current value at position
i . | | final public long | getAndAdd(int i, long delta)
Atomically adds the given value to the element at index
i . | | final public long | getAndDecrement(int i)
Atomically decrements by one the element at index
i . | | final public long | getAndIncrement(int i)
Atomically increments by one the element at index
i . | | final public long | getAndSet(int i, long newValue)
Atomically sets the element at position
i to the given value
and returns the old value. | | final public long | incrementAndGet(int i)
Atomically increments by one the element at index
i . | | final public void | lazySet(int i, long newValue)
Eventually sets the element at position
i to the given value. | | final public int | length()
Returns the length of the array. | | final public void | set(int i, long newValue)
Sets the element at position
i to the given value. | | public String | toString()
Returns the String representation of the current values of array. | | final public boolean | weakCompareAndSet(int i, long expect, long update)
Atomically sets the value to the given updated value
if the current value
== the expected value. |
| AtomicLongArray | | public AtomicLongArray(int length)(Code) | | Creates a new AtomicLongArray of given length.
Parameters:
length - the length of the array |
| AtomicLongArray | | public AtomicLongArray(long[] array)(Code) | | Creates a new AtomicLongArray with the same length as, and
all elements copied from, the given array.
Parameters:
array - the array to copy elements from
throws:
NullPointerException - if array is null |
| addAndGet | | public long addAndGet(int i, long delta)(Code) | | Atomically adds the given value to the element at index
i .
Parameters:
i - the index
Parameters:
delta - the value to add the updated value |
| compareAndSet | | final public boolean compareAndSet(int i, long expect, long update)(Code) | | Atomically sets the value to the given updated value
if the current value
== the expected value.
Parameters:
i - the index
Parameters:
expect - the expected value
Parameters:
update - the new value true if successful. False return indicates thatthe actual value was not equal to the expected value. |
| decrementAndGet | | final public long decrementAndGet(int i)(Code) | | Atomically decrements by one the element at index
i .
Parameters:
i - the index the updated value |
| get | | final public long get(int i)(Code) | | Gets the current value at position
i .
Parameters:
i - the index the current value |
| getAndAdd | | final public long getAndAdd(int i, long delta)(Code) | | Atomically adds the given value to the element at index
i .
Parameters:
i - the index
Parameters:
delta - the value to add the previous value |
| getAndDecrement | | final public long getAndDecrement(int i)(Code) | | Atomically decrements by one the element at index
i .
Parameters:
i - the index the previous value |
| getAndIncrement | | final public long getAndIncrement(int i)(Code) | | Atomically increments by one the element at index
i .
Parameters:
i - the index the previous value |
| getAndSet | | final public long getAndSet(int i, long newValue)(Code) | | Atomically sets the element at position
i to the given value
and returns the old value.
Parameters:
i - the index
Parameters:
newValue - the new value the previous value |
| incrementAndGet | | final public long incrementAndGet(int i)(Code) | | Atomically increments by one the element at index
i .
Parameters:
i - the index the updated value |
| lazySet | | final public void lazySet(int i, long newValue)(Code) | | Eventually sets the element at position
i to the given value.
Parameters:
i - the index
Parameters:
newValue - the new value
since:
1.6 |
| length | | final public int length()(Code) | | Returns the length of the array.
the length of the array |
| set | | final public void set(int i, long newValue)(Code) | | Sets the element at position
i to the given value.
Parameters:
i - the index
Parameters:
newValue - the new value |
| toString | | public String toString()(Code) | | Returns the String representation of the current values of array.
the String representation of the current values of array. |
| weakCompareAndSet | | final public boolean weakCompareAndSet(int i, long expect, long update)(Code) | | Atomically sets the value to the given updated value
if the current value
== the expected value.
May fail spuriously
and does not provide ordering guarantees, so is only rarely an
appropriate alternative to
compareAndSet .
Parameters:
i - the index
Parameters:
expect - the expected value
Parameters:
update - the new value true if successful. |
|
|
|