src/egl/main/eglsync.h

   1 #ifndef EGLSYNC_INCLUDED
   2 #define EGLSYNC_INCLUDED
   3
   4
   5 #include "egltypedefs.h"
   6 #include "egldisplay.h"
   7
   8
   9 #ifdef EGL_KHR_reusable_sync
  10
  11
  12 /**
  13  * "Base" class for device driver syncs.
  14  */
  15 struct _egl_sync
  16 {
  17    /* A sync is a display resource */
  18    _EGLResource Resource;
  19
  20    EGLenum Type;
  21    EGLenum SyncStatus;
  22    EGLenum SyncCondition;
  23 };
  24
  25
  26 PUBLIC EGLBoolean
  27 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
  28              const EGLint *attrib_list);
  29
  30
  31 extern EGLBoolean
  32 _eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
  33                      EGLint attribute, EGLint *value);
  34
  35
  36 /**
  37  * Link a sync to its display and return the handle of the link.
  38  * The handle can be passed to client directly.
  39  */
  40 static INLINE EGLSyncKHR
  41 _eglLinkSync(_EGLSync *sync)
  42 {
  43    _eglLinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
  44    return (EGLSyncKHR) sync;
  45 }
  46
  47
  48 /**
  49  * Unlink a linked sync from its display.
  50  */
  51 static INLINE void
  52 _eglUnlinkSync(_EGLSync *sync)
  53 {
  54    _eglUnlinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
  55 }
  56
  57
  58 /**
  59  * Lookup a handle to find the linked sync.
  60  * Return NULL if the handle has no corresponding linked sync.
  61  */
  62 static INLINE _EGLSync *
  63 _eglLookupSync(EGLSyncKHR handle, _EGLDisplay *dpy)
  64 {
  65    _EGLSync *sync = (_EGLSync *) handle;
  66    if (!dpy || !_eglCheckResource((void *) sync, _EGL_RESOURCE_SYNC, dpy))
  67       sync = NULL;
  68    return sync;
  69 }
  70
  71
  72 /**
  73  * Return the handle of a linked sync, or EGL_NO_SYNC_KHR.
  74  */
  75 static INLINE EGLSyncKHR
  76 _eglGetSyncHandle(_EGLSync *sync)
  77 {
  78    _EGLResource *res = (_EGLResource *) sync;
  79    return (res && _eglIsResourceLinked(res)) ?
  80       (EGLSyncKHR) sync : EGL_NO_SYNC_KHR;
  81 }
  82
  83
  84 /**
  85  * Return true if the sync is linked to a display.
  86  *
  87  * The link is considered a reference to the sync (the display is owning the
  88  * sync).  Drivers should not destroy a sync when it is linked.
  89  */
  90 static INLINE EGLBoolean
  91 _eglIsSyncLinked(_EGLSync *sync)
  92 {
  93    _EGLResource *res = (_EGLResource *) sync;
  94    return (res && _eglIsResourceLinked(res));
  95 }
  96
  97
  98 #endif /* EGL_KHR_reusable_sync */
  99
 100
 101 #endif /* EGLSYNC_INCLUDED */