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| java.lang.Object
 java.util.concurrent.atomic.AtomicIntegerArray
| AtomicIntegerArray | | public class AtomicIntegerArray implements java.io.Serializable(Code) | | An
int 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 | AtomicIntegerArray(int length)
Creates a new AtomicIntegerArray of given length. | | public | AtomicIntegerArray(int[] array)
Creates a new AtomicIntegerArray with the same length as, and
all elements copied from, the given array. |
| Method Summary | |
| final public int | addAndGet(int i, int delta)
Atomically adds the given value to the element at index
i . | | final public boolean | compareAndSet(int i, int expect, int update)
Atomically sets the element at position
i 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 int | decrementAndGet(int i)
Atomically decrements by one the element at index
i . | | final public int | get(int i)
Gets the current value at position
i . | | final public int | getAndAdd(int i, int delta)
Atomically adds the given value to the element at index
i . | | final public int | getAndDecrement(int i)
Atomically decrements by one the element at index
i . | | final public int | getAndIncrement(int i)
Atomically increments by one the element at index
i . | | final public int | getAndSet(int i, int newValue)
Atomically sets the element at position
i to the given
value and returns the old value. | | final public int | incrementAndGet(int i)
Atomically increments by one the element at index
i . | | final public void | lazySet(int i, int 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, int 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, int expect, int update)
Atomically sets the element at position
i to the given
updated value if the current value
== the expected value. |
| AtomicIntegerArray | | public AtomicIntegerArray(int length)(Code) | | Creates a new AtomicIntegerArray of given length.
Parameters:
length - the length of the array |
| AtomicIntegerArray | | public AtomicIntegerArray(int[] array)(Code) | | Creates a new AtomicIntegerArray 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 | | final public int addAndGet(int i, int 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, int expect, int update)(Code) | | Atomically sets the element at position
i 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 int decrementAndGet(int i)(Code) | | Atomically decrements by one the element at index
i .
Parameters:
i - the index the updated value |
| get | | final public int get(int i)(Code) | | Gets the current value at position
i .
Parameters:
i - the index the current value |
| getAndAdd | | final public int getAndAdd(int i, int 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 int getAndDecrement(int i)(Code) | | Atomically decrements by one the element at index
i .
Parameters:
i - the index the previous value |
| getAndIncrement | | final public int getAndIncrement(int i)(Code) | | Atomically increments by one the element at index
i .
Parameters:
i - the index the previous value |
| getAndSet | | final public int getAndSet(int i, int 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 int 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, int 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, int 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, int expect, int update)(Code) | | Atomically sets the element at position
i 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. |
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