AtomicMarkableReference JDK 1.6)

public boolean attemptMark ( V expectedReference, boolean newMark)

Atomically sets the value of the mark to the given update value if the current reference is == to the expected reference.

Atomically sets the value of the mark to the given update value
if the current reference is == to the expected
reference. Any given invocation of this operation may fail
(return false) spuriously, but repeated invocation
when the current value holds the expected value and no other
thread is also attempting to set the value will eventually
succeed.
Returns: true if successful
Parameters:
- expectedReference - the expected value of the reference
- newMark - the new value for the mark

public boolean compareAndSet ( V expectedReference, V newReference, boolean expectedMark, boolean newMark)

Atomically sets the value of both the reference and mark to the given update values if the current reference is == to the expected reference and the current mark is equal to the expected mark.

Atomically sets the value of both the reference and mark
to the given update values if the
current reference is == to the expected reference
and the current mark is equal to the expected mark.
Returns: true if successful
Parameters:
- expectedReference - the expected value of the reference
- newReference - the new value for the reference
- expectedMark - the expected value of the mark
- newMark - the new value for the mark

public V get (boolean[] markHolder)

Returns the current values of both the reference and the mark.

Returns the current values of both the reference and the mark.
Typical usage is boolean[1] holder; ref = v.get(holder); .
Returns: the current value of the reference
Parameters:
- markHolder - an array of size of at least one. On return, {@code markholder[0]} will hold the value of the mark.

public V getReference ()

Returns the current value of the reference.

public boolean isMarked ()

Returns the current value of the mark.

public void set ( V newReference, boolean newMark)

Unconditionally sets the value of both the reference and mark.

public boolean weakCompareAndSet ( V expectedReference, V newReference, boolean expectedMark, boolean newMark)

Atomically sets the value of both the reference and mark to the given update values if the current reference is == to the expected reference and the current mark is equal to the expected mark.

May fail spuriously and does not provide ordering guarantees, so is only rarely an appropriate alternative to compareAndSet.
Returns: true if successful
Parameters:
- expectedReference - the expected value of the reference
- newReference - the new value for the reference
- expectedMark - the expected value of the mark
- newMark - the new value for the mark