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 };
  23
  24
  25 PUBLIC EGLBoolean
  26 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
  27              const EGLint *attrib_list);
  28
  29
  30 extern _EGLSync *
  31 _eglCreateSyncKHR(_EGLDriver *drv, _EGLDisplay *dpy,
  32                   EGLenum type, const EGLint *attrib_list);
  33
  34
  35 extern EGLBoolean
  36 _eglDestroySyncKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync);
  37
  38
  39 extern EGLint
  40 _eglClientWaitSyncKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
  41                       EGLint flags, EGLTimeKHR timeout);
  42
  43
  44 extern EGLBoolean
  45 _eglSignalSyncKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
  46                   EGLenum mode);
  47
  48
  49 extern EGLBoolean
  50 _eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
  51                      EGLint attribute, EGLint *value);
  52
  53
  54 /**
  55  * Link a sync to a display and return the handle of the link.
  56  * The handle can be passed to client directly.
  57  */
  58 static INLINE EGLSyncKHR
  59 _eglLinkSync(_EGLSync *sync, _EGLDisplay *dpy)
  60 {
  61    _eglLinkResource(&sync->Resource, _EGL_RESOURCE_SYNC, dpy);
  62    return (EGLSyncKHR) sync;
  63 }
  64
  65
  66 /**
  67  * Unlink a linked sync from its display.
  68  */
  69 static INLINE void
  70 _eglUnlinkSync(_EGLSync *sync)
  71 {
  72    _eglUnlinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
  73 }
  74
  75
  76 /**
  77  * Lookup a handle to find the linked sync.
  78  * Return NULL if the handle has no corresponding linked sync.
  79  */
  80 static INLINE _EGLSync *
  81 _eglLookupSync(EGLSyncKHR handle, _EGLDisplay *dpy)
  82 {
  83    _EGLSync *sync = (_EGLSync *) handle;
  84    if (!dpy || !_eglCheckResource((void *) sync, _EGL_RESOURCE_SYNC, dpy))
  85       sync = NULL;
  86    return sync;
  87 }
  88
  89
  90 /**
  91  * Return the handle of a linked sync, or EGL_NO_SYNC_KHR.
  92  */
  93 static INLINE EGLSyncKHR
  94 _eglGetSyncHandle(_EGLSync *sync)
  95 {
  96    _EGLResource *res = (_EGLResource *) sync;
  97    return (res && _eglIsResourceLinked(res)) ?
  98       (EGLSyncKHR) sync : EGL_NO_SYNC_KHR;
  99 }
 100
 101
 102 /**
 103  * Return true if the sync is linked to a display.
 104  *
 105  * The link is considered a reference to the sync (the display is owning the
 106  * sync).  Drivers should not destroy a sync when it is linked.
 107  */
 108 static INLINE EGLBoolean
 109 _eglIsSyncLinked(_EGLSync *sync)
 110 {
 111    _EGLResource *res = (_EGLResource *) sync;
 112    return (res && _eglIsResourceLinked(res));
 113 }
 114
 115
 116 #endif /* EGL_KHR_reusable_sync */
 117
 118
 119 #endif /* EGLSYNC_INCLUDED */