/** {@inheritDoc} */
  @Override
  public Collection<GridDeployment> getDeployments() {
    Collection<GridDeployment> deps = new ArrayList<GridDeployment>();

    synchronized (mux) {
      for (List<GridDeployment> depList : cache.values()) {
        for (GridDeployment d : depList) {
          if (!deps.contains(d)) {
            deps.add(d);
          }
        }
      }

      return deps;
    }
  }
  /**
   * @param ldr Class loader to undeploy.
   * @param recEvt Whether or not to record the event.
   */
  private void undeploy(ClassLoader ldr, boolean recEvt) {
    Collection<GridDeployment> doomed = new HashSet<GridDeployment>();

    synchronized (mux) {
      for (Iterator<LinkedList<GridDeployment>> i1 = cache.values().iterator(); i1.hasNext(); ) {
        LinkedList<GridDeployment> deps = i1.next();

        for (Iterator<GridDeployment> i2 = deps.iterator(); i2.hasNext(); ) {
          GridDeployment dep = i2.next();

          if (dep.classLoader() == ldr) {
            dep.undeploy();

            i2.remove();

            doomed.add(dep);

            if (log.isInfoEnabled()) {
              log.info("Removed undeployed class: " + dep);
            }
          }
        }

        if (deps.isEmpty()) {
          i1.remove();
        }
      }
    }

    for (GridDeployment dep : doomed) {
      if (dep.isObsolete()) {
        // Resource cleanup.
        ctx.resource().onUndeployed(dep);
      }

      if (recEvt) {
        recordUndeploy(dep, true);
      }
    }
  }