コード例 #1
0
  /**
   * Queries whether this task is canceled. A task is considered canceled if it or any of its
   * parents have been canceled.
   *
   * @return {@code true} if this task or any parent is canceled.
   */
  protected boolean taskCanceled() {
    boolean cancel = canceled;
    if (!cancel) {
      for (K parent = getParent(); !cancel && parent != null; parent = parent.getParent())
        cancel = parent.canceled;
    }

    return cancel;
  }
コード例 #2
0
 /**
  * Cancels all tasks which succeed this one in the encounter order. This includes canceling all
  * the current task's right sibling, as well as the later right siblings of all its parents.
  */
 protected void cancelLaterNodes() {
   // Go up the tree, cancel right siblings of this node and all parents
   for (@SuppressWarnings("unchecked") K parent = getParent(), node = (K) this;
       parent != null;
       node = parent, parent = parent.getParent()) {
     // If node is a left child of parent, then has a right sibling
     if (parent.leftChild == node) {
       K rightSibling = parent.rightChild;
       if (!rightSibling.canceled) rightSibling.cancel();
     }
   }
 }