Source to driverkit/KernLock.h

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

/*
 * Copyright (c) 1994 NeXT Computer, Inc.
 *
 * Kernel generic lock object.
 *
 * HISTORY
 *
 * 4 July 1994 ? at NeXT
 *	Created.
 */

#ifdef	KERNEL_PRIVATE

#import <objc/Object.h>

@interface KernLock : Object
{
@private
    void		*_slock;
    int			_lockLevel, _savedLevel;
}

- initWithLevel: (int)level;

- (void)acquire;
- (void)release;

- (int)level;

@end

void
KernLockAcquire(
	KernLock	*lock
);
void
KernLockRelease(
	KernLock	*lock
);

#endif