mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
127 lines
3.4 KiB
C++
127 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* vim: set ts=4 sw=4 et tw=99 ft=cpp:
|
|
*
|
|
* ***** 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 SpiderMonkey JavaScript 1.9.1 code, released
|
|
* June 30, 2009.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Andreas Gal <gal@mozilla.com>
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of 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 "jstask.h"
|
|
|
|
#ifdef JS_THREADSAFE
|
|
static void start(void* arg) {
|
|
((JSBackgroundThread*)arg)->work();
|
|
}
|
|
|
|
JSBackgroundThread::JSBackgroundThread()
|
|
: thread(NULL), stack(NULL), lock(NULL), wakeup(NULL), shutdown(false)
|
|
{
|
|
}
|
|
|
|
JSBackgroundThread::~JSBackgroundThread()
|
|
{
|
|
if (wakeup)
|
|
PR_DestroyCondVar(wakeup);
|
|
if (lock)
|
|
PR_DestroyLock(lock);
|
|
/* PR_DestroyThread is not necessary. */
|
|
}
|
|
|
|
bool
|
|
JSBackgroundThread::init()
|
|
{
|
|
if (!(lock = PR_NewLock()))
|
|
return false;
|
|
if (!(wakeup = PR_NewCondVar(lock)))
|
|
return false;
|
|
thread = PR_CreateThread(PR_USER_THREAD, start, this, PR_PRIORITY_LOW,
|
|
PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0);
|
|
return !!thread;
|
|
}
|
|
|
|
void
|
|
JSBackgroundThread::cancel()
|
|
{
|
|
PR_Lock(lock);
|
|
if (shutdown) {
|
|
PR_Unlock(lock);
|
|
return;
|
|
}
|
|
shutdown = true;
|
|
PR_NotifyCondVar(wakeup);
|
|
PR_Unlock(lock);
|
|
PR_JoinThread(thread);
|
|
}
|
|
|
|
void
|
|
JSBackgroundThread::work()
|
|
{
|
|
PR_Lock(lock);
|
|
while (!shutdown) {
|
|
PR_WaitCondVar(wakeup, PR_INTERVAL_NO_TIMEOUT);
|
|
JSBackgroundTask* t;
|
|
while ((t = stack) != NULL) {
|
|
stack = t->next;
|
|
PR_Unlock(lock);
|
|
t->run();
|
|
delete t;
|
|
PR_Lock(lock);
|
|
}
|
|
}
|
|
PR_Unlock(lock);
|
|
}
|
|
|
|
bool
|
|
JSBackgroundThread::busy()
|
|
{
|
|
return !!stack; // we tolerate some racing here
|
|
}
|
|
|
|
void
|
|
JSBackgroundThread::schedule(JSBackgroundTask* task)
|
|
{
|
|
PR_Lock(lock);
|
|
if (shutdown) {
|
|
PR_Unlock(lock);
|
|
task->run();
|
|
delete task;
|
|
return;
|
|
}
|
|
task->next = stack;
|
|
stack = task;
|
|
PR_NotifyCondVar(wakeup);
|
|
PR_Unlock(lock);
|
|
}
|
|
|
|
#endif
|