Constructor Detail

• AtomicLongArray

  public AtomicLongArray(int length)

  Creates a new AtomicLongArray of the given length, with all elements initially zero.

  Parameters:

  length - the length of the array

• AtomicLongArray

  public AtomicLongArray(long[] array)

  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

Method Detail

• length

  public final int length()

  Returns the length of the array.

  Returns:

  the length of the array

• get

  public final long get(int i)

  Gets the current value at position i.

  Parameters:

  i - the index

  Returns:

  the current value

• set

  public final void set(int i,
         long newValue)

  Sets the element at position i to the given value.

  Parameters:

  i - the index

  newValue - the new value

• lazySet

  public final void lazySet(int i,
             long newValue)

  Eventually sets the element at position i to the given value.

  Parameters:

  i - the index

  newValue - the new value

  Since:

  1.6

• getAndSet

  public final long getAndSet(int i,
               long newValue)

  Atomically sets the element at position i to the given value and returns the old value.

  Parameters:

  i - the index

  newValue - the new value

  Returns:

  the previous value

• compareAndSet

  public final boolean compareAndSet(int i,
                      long expect,
                      long update)

  Atomically sets the element at position i to the given updated value if the current value == the expected value.

  Parameters:

  i - the index

  expect - the expected value

  update - the new value

  Returns:

  true if successful. False return indicates that the actual value was not equal to the expected value.

• weakCompareAndSet

  public final boolean weakCompareAndSet(int i,
                          long expect,
                          long update)

  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

  expect - the expected value

  update - the new value

  Returns:

  true if successful.

• getAndIncrement

  public final long getAndIncrement(int i)

  Atomically increments by one the element at index i.

  Parameters:

  i - the index

  Returns:

  the previous value

• getAndDecrement

  public final long getAndDecrement(int i)

  Atomically decrements by one the element at index i.

  Parameters:

  i - the index

  Returns:

  the previous value

• getAndAdd

  public final long getAndAdd(int i,
               long delta)

  Atomically adds the given value to the element at index i.

  Parameters:

  i - the index

  delta - the value to add

  Returns:

  the previous value

• incrementAndGet

  public final long incrementAndGet(int i)

  Atomically increments by one the element at index i.

  Parameters:

  i - the index

  Returns:

  the updated value

• decrementAndGet

  public final long decrementAndGet(int i)

  Atomically decrements by one the element at index i.

  Parameters:

  i - the index

  Returns:

  the updated value

• addAndGet

  public long addAndGet(int i,
               long delta)

  Atomically adds the given value to the element at index i.

  Parameters:

  i - the index

  delta - the value to add

  Returns:

  the updated value

• toString

  public String toString()

  Returns the String representation of the current values of array.

  Overrides:

  toString in class Object

  Returns:

  the String representation of the current values of array