1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 * vim: set ts=4 sw=4 et tw=99 ft=cpp:
4 * ***** BEGIN LICENSE BLOCK *****
5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
7 * The contents of this file are subject to the Mozilla Public License Version
8 * 1.1 (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
10 * http://www.mozilla.org/MPL/
12 * Software distributed under the License is distributed on an "AS IS" basis,
13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14 * for the specific language governing rights and limitations under the
17 * The Original Code is Mozilla SpiderMonkey JavaScript 1.9.1 code, released
20 * The Initial Developer of the Original Code is
21 * Andreas Gal <gal@mozilla.com>
25 * Alternatively, the contents of this file may be used under the terms of
26 * either of the GNU General Public License Version 2 or later (the "GPL"),
27 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 * in which case the provisions of the GPL or the LGPL are applicable instead
29 * of those above. If you wish to allow use of your version of this file only
30 * under the terms of either the GPL or the LGPL, and not to allow others to
31 * use your version of this file under the terms of the MPL, indicate your
32 * decision by deleting the provisions above and replace them with the notice
33 * and other provisions required by the GPL or the LGPL. If you do not delete
34 * the provisions above, a recipient may use your version of this file under
35 * the terms of any one of the MPL, the GPL or the LGPL.
37 * ***** END LICENSE BLOCK ***** */
42 static void start(void* arg
) {
43 ((JSBackgroundThread
*)arg
)->work();
46 JSBackgroundThread::JSBackgroundThread()
47 : thread(NULL
), stack(NULL
), lock(NULL
), wakeup(NULL
), shutdown(false)
51 JSBackgroundThread::~JSBackgroundThread()
54 PR_DestroyCondVar(wakeup
);
57 /* PR_DestroyThread is not necessary. */
61 JSBackgroundThread::init()
63 if (!(lock
= PR_NewLock()))
65 if (!(wakeup
= PR_NewCondVar(lock
)))
67 thread
= PR_CreateThread(PR_USER_THREAD
, start
, this, PR_PRIORITY_LOW
,
68 PR_LOCAL_THREAD
, PR_JOINABLE_THREAD
, 0);
73 JSBackgroundThread::cancel()
75 /* We allow to call the cancel method after failed init. */
85 PR_NotifyCondVar(wakeup
);
87 PR_JoinThread(thread
);
91 JSBackgroundThread::work()
95 PR_WaitCondVar(wakeup
, PR_INTERVAL_NO_TIMEOUT
);
97 while ((t
= stack
) != NULL
) {
109 JSBackgroundThread::busy()
111 return !!stack
; // we tolerate some racing here
115 JSBackgroundThread::schedule(JSBackgroundTask
* task
)
126 PR_NotifyCondVar(wakeup
);