void trimList(List list, int max) {
synchronized (list) {
while (list.size() > max) {
list.remove(0);
}
}
}
/**
* Removes a specific <tt>UserCapsNodeListener</tt> from the list of
* <tt>UserCapsNodeListener</tt>s interested in events notifying about changes in the list of user
* caps nodes of this <tt>EntityCapsManager</tt>.
*
* @param listener the <tt>UserCapsNodeListener</tt> which is no longer interested in events
* notifying about changes in the list of user caps nodes of this <tt>EntityCapsManager</tt>
*/
public void removeUserCapsNodeListener(UserCapsNodeListener listener) {
if (listener != null) {
synchronized (userCapsNodeListeners) {
userCapsNodeListeners.remove(listener);
}
}
}
/**
* Expires a specific <tt>Content</tt> of this <tt>Conference</tt> (i.e. if the specified
* <tt>content</tt> is not in the list of <tt>Content</tt>s of this <tt>Conference</tt>, does
* nothing).
*
* @param content the <tt>Content</tt> to be expired by this <tt>Conference</tt>
*/
public void expireContent(Content content) {
boolean expireContent;
synchronized (contents) {
if (contents.contains(content)) {
contents.remove(content);
expireContent = true;
} else expireContent = false;
}
if (expireContent) content.expire();
}
/*
* unlocks the global lock and notifies the first waiting thread that they
* now have the lock
*/
private static void unlock() {
Thread waitingThread = null;
Object loader = null;
synchronized (BundleLoader.class) {
lockCount--;
if (lockCount != 0) return;
if (waitingList.isEmpty()) {
lockThread = null;
return;
}
Object[] waiting = (Object[]) waitingList.get(0);
waitingThread = (Thread) waiting[0];
loader = waiting[1];
}
synchronized (loader) {
synchronized (BundleLoader.class) {
lockThread = waitingThread;
waitingList.remove(0);
loader.notifyAll();
}
}
}
