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  1. /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
  2.  
  3. /*
  4.  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the "Software"),
  8.  * to deal in the Software without restriction, including without limitation
  9.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10.  * and/or sell copies of the Software, and to permit persons to whom the
  11.  * Software is furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice (including the next
  14.  * paragraph) shall be included in all copies or substantial portions of the
  15.  * Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22.  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23.  * SOFTWARE.
  24.  *
  25.  * Authors:
  26.  *    Rob Clark <robclark@freedesktop.org>
  27.  */
  28.  
  29. #ifndef FREEDRENO_FENCE_H_
  30. #define FREEDRENO_FENCE_H_
  31.  
  32. #include "util/u_inlines.h"
  33. #include "util/u_double_list.h"
  34.  
  35.  
  36. struct fd_fence {
  37.         int ref;
  38. };
  39.  
  40. boolean fd_fence_wait(struct fd_fence *fence);
  41. boolean fd_fence_signalled(struct fd_fence *fence);
  42. void fd_fence_del(struct fd_fence *fence);
  43.  
  44. static INLINE void
  45. fd_fence_ref(struct fd_fence *fence, struct fd_fence **ref)
  46. {
  47.         if (fence)
  48.                 ++fence->ref;
  49.  
  50.         if (*ref) {
  51.                 if (--(*ref)->ref == 0)
  52.                         fd_fence_del(*ref);
  53.         }
  54.  
  55.         *ref = fence;
  56. }
  57.  
  58. static INLINE struct fd_fence *
  59. fd_fence(struct pipe_fence_handle *fence)
  60. {
  61.         return (struct fd_fence *)fence;
  62. }
  63.  
  64.  
  65. #endif /* FREEDRENO_FENCE_H_ */
  66.