src/gallium/winsys/i915/sw/i915_sw_fence.c

   1
   2 #include "i915_sw_winsys.h"
   3 #include "util/u_memory.h"
   4 #include "util/u_atomic.h"
   5 #include "util/u_inlines.h"
   6
   7 struct i915_sw_fence
   8 {
   9    struct pipe_reference reference;
  10 };
  11
  12 struct pipe_fence_handle *
  13 i915_sw_fence_create()
  14 {
  15    struct i915_sw_fence *fence = CALLOC_STRUCT(i915_sw_fence);
  16
  17    pipe_reference_init(&fence->reference, 1);
  18
  19    return (struct pipe_fence_handle *)fence;
  20 }
  21
  22 static void
  23 i915_sw_fence_reference(struct i915_winsys *iws,
  24                         struct pipe_fence_handle **ptr,
  25                         struct pipe_fence_handle *fence)
  26 {
  27    struct i915_sw_fence *old = (struct i915_sw_fence *)*ptr;
  28    struct i915_sw_fence *f = (struct i915_sw_fence *)fence;
  29
  30    if (pipe_reference(&((struct i915_sw_fence *)(*ptr))->reference, &f->reference)) {
  31       FREE(old);
  32    }
  33    *ptr = fence;
  34 }
  35
  36 static int
  37 i915_sw_fence_signalled(struct i915_winsys *iws,
  38                         struct pipe_fence_handle *fence)
  39 {
  40    assert(0);
  41
  42    return 0;
  43 }
  44
  45 static int
  46 i915_sw_fence_finish(struct i915_winsys *iws,
  47                      struct pipe_fence_handle *fence)
  48 {
  49    return 0;
  50 }
  51
  52 void
  53 i915_sw_winsys_init_fence_functions(struct i915_sw_winsys *isws)
  54 {
  55    isws->base.fence_reference = i915_sw_fence_reference;
  56    isws->base.fence_signalled = i915_sw_fence_signalled;
  57    isws->base.fence_finish = i915_sw_fence_finish;
  58 }