mirror of
https://github.com/gnustep/libs-gdl2.git
synced 2025-02-15 16:10:46 +00:00
9720ac993d
* DB2Modeler/COPYING: Update to GPL 3. * *.*: Update copyright notices. git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gdl2/trunk@25326 72102866-910b-0410-8b05-ffd578937521
68 lines
1.8 KiB
Objective-C
68 lines
1.8 KiB
Objective-C
/* -*-objc-*-
|
|
EOMultiReaderLock.h
|
|
|
|
Copyright (C) 2005 Free Software Foundation, Inc.
|
|
|
|
Author: David Ayers <ayers@fsfe.org>
|
|
Date: November 2005
|
|
|
|
This file is part of the GNUstep Database Library.
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 3 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; see the file COPYING.LIB.
|
|
If not, write to the Free Software Foundation,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __EOControl_EOMultiReaderLock_h__
|
|
#define __EOControl_EOMultiReaderLock_h__
|
|
|
|
#ifdef GNUSTEP
|
|
#include <Foundation/NSObject.h>
|
|
#include <Foundation/NSMapTable.h>
|
|
#else
|
|
#include <Foundation/Foundation.h>
|
|
#endif
|
|
|
|
@class NSConditionLock;
|
|
@class NSThread;
|
|
|
|
/*
|
|
* WARNING !!!
|
|
* This class is in the middle of it's initial experimental implementation
|
|
* Do not use it yet! But if you'd like to help implementing, please
|
|
* feel free.
|
|
*/
|
|
@interface EOMultiReaderLock : NSObject
|
|
{
|
|
NSConditionLock *_mutex;
|
|
int _readerFinishedCondition;
|
|
int _writerFinishedCondition;
|
|
NSMapTable *_readerThreads;
|
|
unsigned int _writerLockCount;
|
|
volatile NSThread *_writerLockThread;
|
|
}
|
|
|
|
- (BOOL)tryLockForReading;
|
|
- (void)lockForReading;
|
|
- (void)unlockForReading;
|
|
|
|
- (BOOL)tryLockForWriting;
|
|
- (void)lockForWriting;
|
|
- (void)unlockForWriting;
|
|
|
|
- (void)suspendReaderLocks;
|
|
- (void)retrieveReaderLocks;
|
|
@end
|
|
|
|
#endif
|