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Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.util.concurrent.atomic 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


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)
     Create a new AtomicLongArray of given length.
public  AtomicLongArray(long[] array)
     Create a new AtomicLongArray with the same length as, and all elements copied from, the given array.

Method Summary
public  longaddAndGet(int i, long delta)
     Atomically add the given value to element at index i.
final public  booleancompareAndSet(int i, long expect, long update)
     Atomically set 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  longdecrementAndGet(int i)
     Atomically decrement the element at index i.
final public  longget(int i)
     Get the current value at position i.
final public  longgetAndAdd(int i, long delta)
     Atomically add the given value to element at index i.
final public  longgetAndDecrement(int i)
     Atomically decrement by one the element at index i.
final public  longgetAndIncrement(int i)
     Atomically increment by one the element at index i.
final public  longgetAndSet(int i, long newValue)
     Set the element at position i to the given value and return the old value.
final public  longincrementAndGet(int i)
     Atomically increment the element at index i.
final public  intlength()
     Returns the length of the array.
final public  voidset(int i, long newValue)
     Set the element at position i to the given value.
public  StringtoString()
     Returns the String representation of the current values of array.
final public  booleanweakCompareAndSet(int i, long expect, long update)
     Atomically set the value to the given updated value if the current value == the expected value.


Constructor Detail
AtomicLongArray
public AtomicLongArray(int length)(Code)
Create a new AtomicLongArray of given length.
Parameters:
  length - the length of the array



AtomicLongArray
public AtomicLongArray(long[] array)(Code)
Create 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




Method Detail
addAndGet
public long addAndGet(int i, long delta)(Code)
Atomically add the given value to 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 set 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 decrement the element at index i.
Parameters:
  i - the index the updated value;



get
final public long get(int i)(Code)
Get the current value at position i.
Parameters:
  i - the index the current value



getAndAdd
final public long getAndAdd(int i, long delta)(Code)
Atomically add the given value to 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 decrement by one the element at index i.
Parameters:
  i - the index the previous value;



getAndIncrement
final public long getAndIncrement(int i)(Code)
Atomically increment by one the element at index i.
Parameters:
  i - the index the previous value;



getAndSet
final public long getAndSet(int i, long newValue)(Code)
Set the element at position i to the given value and return the old value.
Parameters:
  i - the index
Parameters:
  newValue - the new value the previous value



incrementAndGet
final public long incrementAndGet(int i)(Code)
Atomically increment the element at index i.
Parameters:
  i - the index the updated value;



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)
Set 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 set the value to the given updated value if the current value == the expected value. May fail spuriously.
Parameters:
  i - the index
Parameters:
  expect - the expected value
Parameters:
  update - the new value true if successful.



Methods inherited from java.lang.Object
protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object object)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final public Class<? extends Object> getClass()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
final public void notify()(Code)(Java Doc)
final public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final public void wait(long millis, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait(long millis) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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