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#define __NOUVEAU_FENCE_H__

#include "util/list.h"

#define NOUVEAU_FENCE_STATE_EMITTING  1

#define NOUVEAU_FENCE_STATE_EMITTED   2

#define NOUVEAU_FENCE_STATE_FLUSHED   3

#define NOUVEAU_FENCE_STATE_SIGNALLED 4

   struct list_head list;

   void (*func)(void *);

   void *data;

};

   struct nouveau_fence *next;

   struct nouveau_screen *screen;

   int state;

   int ref;

   uint32_t sequence;

   struct list_head work;

};

void nouveau_fence_del(struct nouveau_fence *);

                          boolean emit);

boolean nouveau_fence_work(struct nouveau_fence *, void (*)(void *), void *);

void    nouveau_fence_update(struct nouveau_screen *, boolean flushed);

void    nouveau_fence_next(struct nouveau_screen *);

boolean nouveau_fence_wait(struct nouveau_fence *);

boolean nouveau_fence_signalled(struct nouveau_fence *);

nouveau_fence_ref(struct nouveau_fence *fence, struct nouveau_fence **ref)

{

   if (fence)

      ++fence->ref;

      if (--(*ref)->ref == 0)

         nouveau_fence_del(*ref);

   }

}

nouveau_fence(struct pipe_fence_handle *fence)

{

   return (struct nouveau_fence *)fence;

}