src/gallium/drivers/llvmpipe/lp_fence.h

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  27
  28
  29 #ifndef LP_FENCE_H
  30 #define LP_FENCE_H
  31
  32
  33 #include "os/os_thread.h"
  34 #include "pipe/p_state.h"
  35 #include "util/u_inlines.h"
  36
  37
  38 struct pipe_screen;
  39
  40
  41 struct lp_fence
  42 {
  43    struct pipe_reference reference;
  44    unsigned id;
  45
  46    pipe_mutex mutex;
  47    pipe_condvar signalled;
  48
  49    boolean issued;
  50    unsigned rank;
  51    unsigned count;
  52 };
  53
  54
  55 struct lp_fence *
  56 lp_fence_create(unsigned rank);
  57
  58
  59 void
  60 lp_fence_signal(struct lp_fence *fence);
  61
  62 boolean
  63 lp_fence_signalled(struct lp_fence *fence);
  64
  65 void
  66 lp_fence_wait(struct lp_fence *fence);
  67
  68 void
  69 llvmpipe_init_screen_fence_funcs(struct pipe_screen *screen);
  70
  71
  72 void
  73 lp_fence_destroy(struct lp_fence *fence);
  74
  75 static INLINE void
  76 lp_fence_reference(struct lp_fence **ptr,
  77                    struct lp_fence *f)
  78 {
  79    struct lp_fence *old = *ptr;
  80
  81    if (pipe_reference(&old->reference, &f->reference)) {
  82       lp_fence_destroy(old);
  83    }
  84
  85    *ptr = f;
  86 }
  87
  88 static INLINE boolean
  89 lp_fence_issued(const struct lp_fence *fence)
  90 {
  91    return fence->issued;
  92 }
  93
  94
  95 #endif /* LP_FENCE_H */