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  * Increment reference count for the sync.
  38  */
  39 static INLINE _EGLSync *
  40 _eglGetSync(_EGLSync *sync)
  41 {
  42    if (sync)
  43       _eglGetResource(&sync->Resource);
  44    return sync;
  45 }
  46
  47
  48 /**
  49  * Decrement reference count for the sync.
  50  */
  51 static INLINE EGLBoolean
  52 _eglPutSync(_EGLSync *sync)
  53 {
  54    return (sync) ? _eglPutResource(&sync->Resource) : EGL_FALSE;
  55 }
  56
  57
  58 /**
  59  * Link a sync to its display and return the handle of the link.
  60  * The handle can be passed to client directly.
  61  */
  62 static INLINE EGLSyncKHR
  63 _eglLinkSync(_EGLSync *sync)
  64 {
  65    _eglLinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
  66    return (EGLSyncKHR) sync;
  67 }
  68
  69
  70 /**
  71  * Unlink a linked sync from its display.
  72  */
  73 static INLINE void
  74 _eglUnlinkSync(_EGLSync *sync)
  75 {
  76    _eglUnlinkResource(&sync->Resource, _EGL_RESOURCE_SYNC);
  77 }
  78
  79
  80 /**
  81  * Lookup a handle to find the linked sync.
  82  * Return NULL if the handle has no corresponding linked sync.
  83  */
  84 static INLINE _EGLSync *
  85 _eglLookupSync(EGLSyncKHR handle, _EGLDisplay *dpy)
  86 {
  87    _EGLSync *sync = (_EGLSync *) handle;
  88    if (!dpy || !_eglCheckResource((void *) sync, _EGL_RESOURCE_SYNC, dpy))
  89       sync = NULL;
  90    return sync;
  91 }
  92
  93
  94 /**
  95  * Return the handle of a linked sync, or EGL_NO_SYNC_KHR.
  96  */
  97 static INLINE EGLSyncKHR
  98 _eglGetSyncHandle(_EGLSync *sync)
  99 {
 100    _EGLResource *res = (_EGLResource *) sync;
 101    return (res && _eglIsResourceLinked(res)) ?
 102       (EGLSyncKHR) sync : EGL_NO_SYNC_KHR;
 103 }
 104
 105
 106 #endif /* EGL_KHR_reusable_sync */
 107
 108
 109 #endif /* EGLSYNC_INCLUDED */