src/gallium/winsys/drm/intel/gem/intel_be_fence.h

   1
   2 #ifndef INTEL_BE_FENCE_H
   3 #define INTEL_BE_FENCE_H
   4
   5 #include "pipe/p_defines.h"
   6
   7 #include "drm.h"
   8 #include "intel_bufmgr.h"
   9
  10 /**
  11  * Because gem does not have fence's we have to create our own fences.
  12  *
  13  * They work by keeping the batchbuffer around and checking if that has
  14  * been idled. If bo is NULL fence has expired.
  15  */
  16 struct intel_be_fence
  17 {
  18         struct pipe_reference reference;
  19         drm_intel_bo *bo;
  20 };
  21
  22 static INLINE void
  23 intel_be_fence_reference(struct intel_be_fence **ptr, struct intel_be_fence *f)
  24 {
  25         struct intel_be_fence *old_fence = *ptr;
  26
  27         if (pipe_reference((struct pipe_reference**)ptr, &f->reference)) {
  28                 if (old_fence->bo)
  29                         drm_intel_bo_unreference(old_fence->bo);
  30                 free(old_fence);
  31         }
  32 }
  33
  34 #endif