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Code Issues Releases Wiki Activity

Improve ArrayBlockingQueueWithShutdown.tryPut()

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to return the internal state when the operation is performed.
This commit is contained in:
Florian Schmaus 2018-05-31 17:19:36 +02:00
parent 27c77fcb1c
commit 751c7b0d40
1 changed files with 30 additions and 5 deletions
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35
smack-core/src/main/java/org/jivesoftware/smack/util/ArrayBlockingQueueWithShutdown.java
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@ -263,20 +263,45 @@ public class ArrayBlockingQueueWithShutdown<E> extends AbstractQueue<E> implemen
}
}
public boolean tryPut(E e) {
public enum TryPutResult {
/**
* The method was unable to acquire the queue lock.
*/
couldNotLock,
/**
* The queue was shut down.
*/
queueWasShutDown,
/**
* The method was unable to put another element into the queue because the queue was full.
*/
queueWasFull,
/**
* The element was successfully placed into the queue.
*/
putSuccessful,
}
public TryPutResult tryPut(E e) {
checkNotNull(e);
boolean locked = lock.tryLock();
if (!locked) {
return false;
return TryPutResult.couldNotLock;
}
try {
if (isShutdown || isFull()) {
return false;
if (isShutdown) {
return TryPutResult.queueWasShutDown;
}
if (isFull()) {
return TryPutResult.queueWasFull;
}
insert(e);
return true;
return TryPutResult.putSuccessful;
} finally {
lock.unlock();
}