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/*
* Author: Max Lingua <sunmax@libero.it>
*/
#ifndef __S3V_LOCK_H__
#define __S3V_LOCK_H__
#include <sys/ioctl.h>
extern void s3vGetLock( s3vContextPtr vmesa, GLuint flags );
/* Turn DEBUG_LOCKING on to find locking conflicts.
*/
#define DEBUG_LOCKING 0
#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( vmesa ) \
do { \
char __ret = 0; \
DEBUG_CHECK_LOCK(); \
DRM_CAS( vmesa->driHwLock, vmesa->hHWContext, \
(DRM_LOCK_HELD | vmesa->hHWContext), __ret ); \
if ( __ret ) \
s3vGetLock( vmesa, 0 ); \
DEBUG_LOCK(); \
} while (0)
/* Unlock the hardware.
*/
#define UNLOCK_HARDWARE( vmesa ) \
do { \
DRM_UNLOCK( vmesa->driFd, \
vmesa->driHwLock, \
vmesa->hHWContext ); \
DEBUG_RESET(); \
} while (0)
#define S3VHW_LOCK( vmesa ) \
DRM_UNLOCK(vmesa->driFd, vmesa->driHwLock, vmesa->hHWContext); \
DRM_SPINLOCK(&vmesa->driScreen->pSAREA->drawable_lock, \
vmesa->driScreen->drawLockID); \
/* VALIDATE_DRAWABLE_INFO_NO_LOCK(vmesa); */
#define S3VHW_UNLOCK( vmesa ) \
DRM_SPINUNLOCK(&vmesa->driScreen->pSAREA->drawable_lock, \
vmesa->driScreen->drawLockID); \
/* VALIDATE_DRAWABLE_INFO_NO_LOCK_POST(vmesa); */
#define S3V_SIMPLE_LOCK( vmesa ) \
ioctl(vmesa->driFd, 0x4a)
#define S3V_SIMPLE_FLUSH_LOCK( vmesa ) \
ioctl(vmesa->driFd, 0x4b)
#define S3V_SIMPLE_UNLOCK( vmesa ) \
ioctl(vmesa->driFd, 0x4c)
#endif /* __S3V_LOCK_H__ */
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