workbench/libs/mesa/src/egl/main/eglsync.h

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   3  * Copyright 2010 LunarG, Inc.
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  27
  28
  29 #ifndef EGLSYNC_INCLUDED
  30 #define EGLSYNC_INCLUDED
  31
  32
  33 #include "egltypedefs.h"
  34 #include "egldisplay.h"
  35
  36
  37 #ifdef EGL_KHR_reusable_sync
  38
  39
  40 /**
  41  * "Base" class for device driver syncs.
  42  */
  43 struct _egl_sync
  44 {
  45    /* A sync is a display resource */
  46    _EGLResource Resource;
  47
  48    EGLenum Type;
  49    EGLenum SyncStatus;
  50    EGLenum SyncCondition;
  51 };
  52
  53
  54 PUBLIC EGLBoolean
  55 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
  56              const EGLint *attrib_list);
  57
  58
  59 extern EGLBoolean
  60 _eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
  61                      EGLint attribute, EGLint *value);
  62
  63
  64 /**
  65  * Increment reference count for the sync.
  66  */
  67 static INLINE _EGLSync *
  68 _eglGetSync(_EGLSync *sync)
  69 {
  70    if (sync)
  71       _eglGetResource(&sync->Resource);
  72    return sync;
  73 }
  74
  75
  76 /**
  77  * Decrement reference count for the sync.
  78  */
  79 static INLINE EGLBoolean
  80 _eglPutSync(_EGLSync *sync)
  81 {
  82    return (sync) ? _eglPutResource(&sync->Resource) : EGL_FALSE;
  83 }
  84
  85
  86 /**
  87  * Link a sync to its display and return the handle of the link.
  88  * The handle can be passed to client directly.
  89  */
  90 static INLINE EGLSyncKHR
  91 _eglLinkSync(_EGLSync *sync)
  92 {
  93    _eglLinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
  94    return (EGLSyncKHR) sync;
  95 }
  96
  97
  98 /**
  99  * Unlink a linked sync from its display.
 100  */
 101 static INLINE void
 102 _eglUnlinkSync(_EGLSync *sync)
 103 {
 104    _eglUnlinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
 105 }
 106
 107
 108 /**
 109  * Lookup a handle to find the linked sync.
 110  * Return NULL if the handle has no corresponding linked sync.
 111  */
 112 static INLINE _EGLSync *
 113 _eglLookupSync(EGLSyncKHR handle, _EGLDisplay *dpy)
 114 {
 115    _EGLSync *sync = (_EGLSync *) handle;
 116    if (!dpy || !_eglCheckResource((void *) sync, _EGL_RESOURCE_SYNC, dpy))
 117       sync = NULL;
 118    return sync;
 119 }
 120
 121
 122 /**
 123  * Return the handle of a linked sync, or EGL_NO_SYNC_KHR.
 124  */
 125 static INLINE EGLSyncKHR
 126 _eglGetSyncHandle(_EGLSync *sync)
 127 {
 128    _EGLResource *res = (_EGLResource *) sync;
 129    return (res && _eglIsResourceLinked(res)) ?
 130       (EGLSyncKHR) sync : EGL_NO_SYNC_KHR;
 131 }
 132
 133
 134 #endif /* EGL_KHR_reusable_sync */
 135
 136
 137 #endif /* EGLSYNC_INCLUDED */