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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla code.
 *
 * The Initial Developer of the Original Code is Google Inc.
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Darin Fisher <darin@meer.net>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsIEventTarget.idl"

/**
 * An interface to a thread pool.  A thread pool creates a limited number of
 * anonymous (unnamed) worker threads.  An event dispatched to the thread pool
 * will be run on the next available worker thread.
 */
[scriptable, uuid(394c29f0-225f-487f-86d3-4c259da76cab)]
interface nsIThreadPool : nsIEventTarget
{
  /**
   * Shutdown the thread pool.  This method may not be executed from any thread
   * in the thread pool.  Instead, it is meant to be executed from another
   * thread (usually the thread that created this thread pool).  When this
   * function returns, the thread pool and all of its threads will be shutdown,
   * and it will no longer be possible to dispatch tasks to the thread pool.
   */
  void shutdown();

  /**
   * Get/set the maximum number of threads allowed at one time in this pool.
   */ 
  attribute unsigned long threadLimit;

  /**
   * Get/set the maximum number of idle threads kept alive.
   */
  attribute unsigned long idleThreadLimit;

  /**
   * Get/set the amount of time in milliseconds before an idle thread is
   * destroyed.
   */
  attribute unsigned long idleThreadTimeout;
};