src/mesa/drivers/dri/ffb/ffb_lock.h

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_lock.h,v 1.2 2002/02/22 21:32:59 dawes Exp $ */
   2
   3 #ifndef _FFB_LOCK_H
   4 #define _FFB_LOCK_H
   5
   6 #include "ffb_context.h"
   7
   8 extern void ffbXMesaUpdateState(ffbContextPtr fmesa);
   9 #define FFB_UPDATE_STATE(fmesa) ffbXMesaUpdateState(fmesa)
  10
  11 /* Lock the hardware and validate our state. */
  12 #if defined(__i386__)
  13 #define LOCK_HARDWARE(fmesa)
  14 #define UNLOCK_HARDWARE(fmesa)
  15 #else
  16 #define LOCK_HARDWARE(fmesa)                            \
  17   do {                                                  \
  18     int __ret=0;                                        \
  19     DRM_CAS(fmesa->driHwLock, fmesa->hHWContext,        \
  20             (DRM_LOCK_HELD | fmesa->hHWContext), __ret);\
  21     if (__ret) {                                        \
  22         drmGetLock(fmesa->driFd, fmesa->hHWContext, 0); \
  23         FFB_UPDATE_STATE(fmesa);                        \
  24     }                                                   \
  25   } while (0)
  26
  27
  28 /* Unlock the hardware. */
  29 #define UNLOCK_HARDWARE(fmesa)                                  \
  30     DRM_UNLOCK(fmesa->driFd, fmesa->driHwLock, fmesa->hHWContext);
  31 #endif
  32
  33 #endif /* !(_FFB_LOCK_H) */