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/* -*- mode: c; c-basic-offset: 3 -*- */
/*
* Copyright 2000 Gareth Hughes
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* GARETH HUGHES BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* Authors:
* Gareth Hughes <gareth@valinux.com>
*
*/
#ifndef __MACH64_LOCK_H__
#define __MACH64_LOCK_H__
extern void mach64GetLock( mach64ContextPtr mmesa, GLuint flags );
/* Turn DEBUG_LOCKING on to find locking conflicts.
*/
#define DEBUG_LOCKING 1
#if DEBUG_LOCKING
extern char *prevLockFile;
extern int prevLockLine;
#define DEBUG_LOCK() \
do { \
prevLockFile = (__FILE__); \
prevLockLine = (__LINE__); \
} while (0)
#define DEBUG_RESET() \
do { \
prevLockFile = 0; \
prevLockLine = 0; \
} while (0)
#define DEBUG_CHECK_LOCK() \
do { \
if ( prevLockFile ) { \
fprintf( stderr, \
"LOCK SET!\n\tPrevious %s:%d\n\tCurrent: %s:%d\n", \
prevLockFile, prevLockLine, __FILE__, __LINE__ ); \
exit( 1 ); \
} \
} while (0)
#else
#define DEBUG_LOCK()
#define DEBUG_RESET()
#define DEBUG_CHECK_LOCK()
#endif
/*
* !!! We may want to separate locks from locks with validation. This
* could be used to improve performance for those things commands that
* do not do any drawing !!!
*/
/* Lock the hardware and validate our state.
*/
#define LOCK_HARDWARE( mmesa ) \
do { \
char __ret = 0; \
DEBUG_CHECK_LOCK(); \
DRM_CAS( mmesa->driHwLock, mmesa->hHWContext, \
(DRM_LOCK_HELD | mmesa->hHWContext), __ret ); \
if ( __ret ) \
mach64GetLock( mmesa, 0 ); \
DEBUG_LOCK(); \
} while (0)
/* Unlock the hardware.
*/
#define UNLOCK_HARDWARE( mmesa ) \
do { \
DRM_UNLOCK( mmesa->driFd, \
mmesa->driHwLock, \
mmesa->hHWContext ); \
DEBUG_RESET(); \
} while (0)
#endif /* __MACH64_LOCK_H__ */
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