| java.lang.Object
 java.lang.ref.ReferenceQueue
| ReferenceQueue | | public class ReferenceQueue (Code) | | Reference queues, to which registered reference objects are appended by the
garbage collector after the appropriate reachability changes are detected.
version:
1.17 10/31/00
author:
Mark Reinhold
since:
1.2 |
| Constructor Summary | |
| public | ReferenceQueue()
Constructs a new reference-object queue. |
| Method Summary | |
| boolean | enqueue(Reference r)
| | public Reference | poll()
Polls this queue to see if a reference object is available. | | public Reference | remove(long timeout)
Removes the next reference object in this queue, blocking until either
one becomes available or the given timeout period expires.
This method does not offer real-time guarantees: It schedules the
timeout as if by invoking the
Object.wait(long) method.
Parameters:
timeout - If positive, block for up timeoutmilliseconds while waiting for a reference to beadded to this queue. | | public Reference | remove()
Removes the next reference object in this queue, blocking until one
becomes available. |
| ReferenceQueue | | public ReferenceQueue()(Code) | | Constructs a new reference-object queue.
|
| poll | | public Reference poll()(Code) | | Polls this queue to see if a reference object is available. If one is
available without further delay then it is removed from the queue and
returned. Otherwise this method immediately returns null.
A reference object, if one was immediately available,otherwise null |
| remove | | public Reference remove(long timeout) throws IllegalArgumentException, InterruptedException(Code) | | Removes the next reference object in this queue, blocking until either
one becomes available or the given timeout period expires.
This method does not offer real-time guarantees: It schedules the
timeout as if by invoking the
Object.wait(long) method.
Parameters:
timeout - If positive, block for up timeoutmilliseconds while waiting for a reference to beadded to this queue. If zero, block indefinitely. A reference object, if one was available within the specifiedtimeout period, otherwise null
throws:
IllegalArgumentException - If the value of the timeout argument is negative
throws:
InterruptedException - If the timeout wait is interrupted |
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