/usr/include/GNUstep/EOControl/EOMultiReaderLock.h is in libgnustep-dl2-dev 0.12.0-15.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | /* -*-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
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