void trimList(List list, int max) {
   synchronized (list) {
     while (list.size() > max) {
       list.remove(0);
     }
   }
 }
Esempio n. 2
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 /**
  * 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();
  }
Esempio n. 4
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  /*
   * 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();
      }
    }
  }