src/egl/main/eglsync.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 LunarG, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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  26  **************************************************************************/
  27
  28
  29 #ifndef EGLSYNC_INCLUDED
  30 #define EGLSYNC_INCLUDED
  31
  32
  33 #include "egltypedefs.h"
  34 #include "egldisplay.h"
  35
  36
  37 /**
  38  * "Base" class for device driver syncs.
  39  */
  40 struct _egl_sync
  41 {
  42    /* A sync is a display resource */
  43    _EGLResource Resource;
  44
  45    EGLenum Type;
  46    EGLenum SyncStatus;
  47    EGLenum SyncCondition;
  48 };
  49
  50
  51 PUBLIC EGLBoolean
  52 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
  53              const EGLint *attrib_list);
  54
  55
  56 extern EGLBoolean
  57 _eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
  58                      EGLint attribute, EGLint *value);
  59
  60
  61 /**
  62  * Increment reference count for the sync.
  63  */
  64 static INLINE _EGLSync *
  65 _eglGetSync(_EGLSync *sync)
  66 {
  67    if (sync)
  68       _eglGetResource(&sync->Resource);
  69    return sync;
  70 }
  71
  72
  73 /**
  74  * Decrement reference count for the sync.
  75  */
  76 static INLINE EGLBoolean
  77 _eglPutSync(_EGLSync *sync)
  78 {
  79    return (sync) ? _eglPutResource(&sync->Resource) : EGL_FALSE;
  80 }
  81
  82
  83 /**
  84  * Link a sync to its display and return the handle of the link.
  85  * The handle can be passed to client directly.
  86  */
  87 static INLINE EGLSyncKHR
  88 _eglLinkSync(_EGLSync *sync)
  89 {
  90    _eglLinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
  91    return (EGLSyncKHR) sync;
  92 }
  93
  94
  95 /**
  96  * Unlink a linked sync from its display.
  97  */
  98 static INLINE void
  99 _eglUnlinkSync(_EGLSync *sync)
 100 {
 101    _eglUnlinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
 102 }
 103
 104
 105 /**
 106  * Lookup a handle to find the linked sync.
 107  * Return NULL if the handle has no corresponding linked sync.
 108  */
 109 static INLINE _EGLSync *
 110 _eglLookupSync(EGLSyncKHR handle, _EGLDisplay *dpy)
 111 {
 112    _EGLSync *sync = (_EGLSync *) handle;
 113    if (!dpy || !_eglCheckResource((void *) sync, _EGL_RESOURCE_SYNC, dpy))
 114       sync = NULL;
 115    return sync;
 116 }
 117
 118
 119 /**
 120  * Return the handle of a linked sync, or EGL_NO_SYNC_KHR.
 121  */
 122 static INLINE EGLSyncKHR
 123 _eglGetSyncHandle(_EGLSync *sync)
 124 {
 125    _EGLResource *res = (_EGLResource *) sync;
 126    return (res && _eglIsResourceLinked(res)) ?
 127       (EGLSyncKHR) sync : EGL_NO_SYNC_KHR;
 128 }
 129
 130
 131 #endif /* EGLSYNC_INCLUDED */