jdk.util.concurrent.atomic.AtomicMarkableReference
An AtomicMarkableReference maintains an object reference along with a mark bit, that can be updated atomically.
Implementation note: This implementation maintains markable references by creating internal objects representing "boxed" [reference, boolean] pairs.
An AtomicMarkableReference maintains an object reference along with a mark bit, that can be updated atomically. Implementation note: This implementation maintains markable references by creating internal objects representing "boxed" [reference, boolean] pairs.
->atomic-markable-referenceclj
(->atomic-markable-reference initial-ref initial-mark)Constructor.
Creates a new AtomicMarkableReference with the given initial values.
initial-ref - the initial reference - V
initial-mark - the initial mark - boolean
Constructor. Creates a new AtomicMarkableReference with the given initial values. initial-ref - the initial reference - `V` initial-mark - the initial mark - `boolean`
attempt-markclj
(attempt-mark this expected-reference new-mark)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.
expected-reference - the expected value of the reference - V
new-mark - the new value for the mark - boolean
returns: true if successful - boolean
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. expected-reference - the expected value of the reference - `V` new-mark - the new value for the mark - `boolean` returns: true if successful - `boolean`
compare-and-setclj
(compare-and-set this expected-reference new-reference expected-mark new-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.
expected-reference - the expected value of the reference - V
new-reference - the new value for the reference - V
expected-mark - the expected value of the mark - boolean
new-mark - the new value for the mark - boolean
returns: true if successful - boolean
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. expected-reference - the expected value of the reference - `V` new-reference - the new value for the reference - `V` expected-mark - the expected value of the mark - `boolean` new-mark - the new value for the mark - `boolean` returns: true if successful - `boolean`
getclj
(get this mark-holder)Returns the current values of both the reference and the mark. Typical usage is boolean[1] holder; ref = v.get(holder); .
mark-holder - an array of size of at least one. On return, markholder[0] will hold the value of the mark. - boolean[]
returns: the current value of the reference - V
Returns the current values of both the reference and the mark. Typical usage is boolean[1] holder; ref = v.get(holder); . mark-holder - an array of size of at least one. On return, markholder[0] will hold the value of the mark. - `boolean[]` returns: the current value of the reference - `V`
get-referenceclj
(get-reference this)Returns the current value of the reference.
returns: the current value of the reference - V
Returns the current value of the reference. returns: the current value of the reference - `V`
marked?clj
(marked? this)Returns the current value of the mark.
returns: the current value of the mark - boolean
Returns the current value of the mark. returns: the current value of the mark - `boolean`
setclj
(set this new-reference new-mark)Unconditionally sets the value of both the reference and mark.
new-reference - the new value for the reference - V
new-mark - the new value for the mark - boolean
Unconditionally sets the value of both the reference and mark. new-reference - the new value for the reference - `V` new-mark - the new value for the mark - `boolean`
weak-compare-and-setclj
(weak-compare-and-set this
expected-reference
new-reference
expected-mark
new-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.
May fail spuriously and does not provide ordering guarantees, so is only rarely an appropriate alternative to compareAndSet.
expected-reference - the expected value of the reference - V
new-reference - the new value for the reference - V
expected-mark - the expected value of the mark - boolean
new-mark - the new value for the mark - boolean
returns: true if successful - boolean
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. expected-reference - the expected value of the reference - `V` new-reference - the new value for the reference - `V` expected-mark - the expected value of the mark - `boolean` new-mark - the new value for the mark - `boolean` returns: true if successful - `boolean`
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