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      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 }
     59