mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
112 lines
3.7 KiB
C++
112 lines
3.7 KiB
C++
/* -*- 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: ML 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 the Mozilla Foundation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2010
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Chris Pearce <chris@pearce.org.nz>
|
|
*
|
|
* 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 ***** */
|
|
|
|
#ifndef VideoUtils_h
|
|
#define VideoUtils_h
|
|
|
|
#include "mozilla/Monitor.h"
|
|
|
|
// This file contains stuff we'd rather put elsewhere, but which is
|
|
// dependent on other changes which we don't want to wait for. We plan to
|
|
// remove this file in the near future.
|
|
|
|
|
|
// This belongs in prtypes.h
|
|
/************************************************************************
|
|
* MACROS: PR_INT64_MAX
|
|
* PR_INT64_MIN
|
|
* PR_UINT64_MAX
|
|
* DESCRIPTION:
|
|
* The maximum and minimum values of a PRInt64 or PRUint64.
|
|
************************************************************************/
|
|
|
|
#define PR_INT64_MAX (~((PRInt64)(1) << 63))
|
|
#define PR_INT64_MIN (-PR_INT64_MAX - 1)
|
|
#define PR_UINT64_MAX (~(PRUint64)(0))
|
|
|
|
|
|
// This belongs in xpcom/monitor/Monitor.h, once we've made
|
|
// mozilla::Monitor non-reentrant.
|
|
namespace mozilla {
|
|
|
|
/**
|
|
* MonitorAutoExit
|
|
* Exit the Monitor when it enters scope, and enters it when it leaves
|
|
* scope.
|
|
*
|
|
* MUCH PREFERRED to bare calls to Monitor.Exit and Enter.
|
|
*/
|
|
class NS_STACK_CLASS MonitorAutoExit
|
|
{
|
|
public:
|
|
/**
|
|
* Constructor
|
|
* The constructor releases the given lock. The destructor
|
|
* acquires the lock. The lock must be held before constructing
|
|
* this object!
|
|
*
|
|
* @param aMonitor A valid mozilla::Monitor* returned by
|
|
* mozilla::Monitor::NewMonitor. It must be
|
|
* already locked.
|
|
**/
|
|
MonitorAutoExit(mozilla::Monitor &aMonitor) :
|
|
mMonitor(&aMonitor)
|
|
{
|
|
NS_ASSERTION(mMonitor, "null monitor");
|
|
mMonitor->AssertCurrentThreadIn();
|
|
mMonitor->Exit();
|
|
}
|
|
|
|
~MonitorAutoExit(void)
|
|
{
|
|
mMonitor->Enter();
|
|
}
|
|
|
|
private:
|
|
MonitorAutoExit();
|
|
MonitorAutoExit(const MonitorAutoExit&);
|
|
MonitorAutoExit& operator =(const MonitorAutoExit&);
|
|
static void* operator new(size_t) CPP_THROW_NEW;
|
|
static void operator delete(void*);
|
|
|
|
mozilla::Monitor* mMonitor;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
#endif
|