egl: Unify the EGLint/EGLAttrib paths in eglCreateSync* (v3)

Pre-patch, there were two code paths for parsing EGLSync attribute
lists: one path for old-style EGLint lists, used by eglCreateSyncKHR,
and another for new-style EGLAttrib lists, used by eglCreateSync (1.5)
and eglCreateSync64 (EGL_KHR_cl_event2).

There were two attrib_list parsing functions,
  _eglParseSyncAttribList(_EGLSync *sync, const EGLint *attrib_list)
  _eglParseSyncAttribList64(_EGLSync *sync, const EGLattrib *attrib_list)
This patch unifies the two attrib_list parsing functions into one,
  _eglParseSyncAttribList(_EGLSync *sync, const EGLattrib *attrib_list)

Many internal EGLSync function signatures had *two* attrib_list
parameters to accomodate both code paths: one parameter was an EGLint
list and other an EGLAttrib list. At most one of the parameters was
allowed to be non-null.  This patch removes the `EGLint *attrib_list`
parameter, leaving only the `EGLAttrib *attrib_list` parameter, for all
internal EGLSync functions.

v2:
  - Consistently use condition (sizeof(int_list[0]) ==
    sizeof(attrib_list[0])). [for emil]
v3:
  - Don't double-unlock the display in eglCreateSyncKHR.

Reviewed-by: Emil Velikov <emil.velikov@collabora.com> (v2)

5 files changed, 34 insertions, 52 deletions

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 803627d..cd0a2e9 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -2509,8 +2509,7 @@ dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
 
 static _EGLSync *
 dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
-                 EGLenum type, const EGLint *attrib_list,
-                 const EGLAttrib *attrib_list64)
+                 EGLenum type, const EGLAttrib *attrib_list)
 {
    _EGLContext *ctx = _eglGetCurrentContext();
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
@@ -2525,8 +2524,7 @@ dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
       return NULL;
    }
 
-   if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list,
-                     attrib_list64)) {
+   if (!_eglInitSync(&dri2_sync->base, dpy, type, attrib_list)) {
       free(dri2_sync);
       return NULL;
    }
diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index d2a89af..18071d7 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -1520,8 +1520,8 @@ eglDestroyImage(EGLDisplay dpy, EGLImage image)
 
 
 static EGLSync
-_eglCreateSync(_EGLDisplay *disp, EGLenum type, const EGLint *attrib_list,
-               const EGLAttrib *attrib_list64, EGLBoolean is64,
+_eglCreateSync(_EGLDisplay *disp, EGLenum type, const EGLAttrib *attrib_list,
+               EGLBoolean orig_is_EGLAttrib,
                EGLenum invalid_type_error)
 {
    _EGLContext *ctx = _eglGetCurrentContext();
@@ -1531,7 +1531,7 @@ _eglCreateSync(_EGLDisplay *disp, EGLenum type, const EGLint *attrib_list,
 
    _EGL_CHECK_DISPLAY(disp, EGL_NO_SYNC_KHR, drv);
 
-   if (!disp->Extensions.KHR_cl_event2 && is64) {
+   if (!disp->Extensions.KHR_cl_event2 && orig_is_EGLAttrib) {
       /* There exist two EGLAttrib variants of eglCreateSync*:
        * eglCreateSync64KHR which requires EGL_KHR_cl_event2, and eglCreateSync
        * which requires EGL 1.5. Here we use the presence of EGL_KHR_cl_event2
@@ -1566,7 +1566,7 @@ _eglCreateSync(_EGLDisplay *disp, EGLenum type, const EGLint *attrib_list,
       RETURN_EGL_ERROR(disp, invalid_type_error, EGL_NO_SYNC_KHR);
    }
 
-   sync = drv->API.CreateSyncKHR(drv, disp, type, attrib_list, attrib_list64);
+   sync = drv->API.CreateSyncKHR(drv, disp, type, attrib_list);
    ret = (sync) ? _eglLinkSync(sync) : EGL_NO_SYNC_KHR;
 
    RETURN_EGL_EVAL(disp, ret);
@@ -1574,12 +1574,31 @@ _eglCreateSync(_EGLDisplay *disp, EGLenum type, const EGLint *attrib_list,
 
 
 static EGLSync EGLAPIENTRY
-eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
+eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *int_list)
 {
    _EGLDisplay *disp = _eglLockDisplay(dpy);
    _EGL_FUNC_START(disp, EGL_OBJECT_DISPLAY_KHR, NULL, EGL_FALSE);
-   return _eglCreateSync(disp, type, attrib_list, NULL, EGL_FALSE,
+
+   EGLSync sync;
+   EGLAttrib *attrib_list;
+   EGLint err;
+
+   if (sizeof(int_list[0]) == sizeof(attrib_list[0])) {
+      attrib_list = (EGLAttrib *) int_list;
+   } else {
+      err = _eglConvertIntsToAttribs(int_list, &attrib_list);
+      if (err != EGL_SUCCESS)
+         RETURN_EGL_ERROR(disp, err, EGL_NO_SYNC);
+   }
+
+   sync = _eglCreateSync(disp, type, attrib_list, EGL_FALSE,
                          EGL_BAD_ATTRIBUTE);
+
+   if (sizeof(int_list[0]) != sizeof(attrib_list[0]))
+      free(attrib_list);
+
+   /* Don't double-unlock the display. _eglCreateSync already unlocked it. */
+   return sync;
 }
 
 
@@ -1588,7 +1607,7 @@ eglCreateSync64KHR(EGLDisplay dpy, EGLenum type, const EGLAttrib *attrib_list)
 {
    _EGLDisplay *disp = _eglLockDisplay(dpy);
    _EGL_FUNC_START(disp, EGL_OBJECT_DISPLAY_KHR, NULL, EGL_FALSE);
-   return _eglCreateSync(disp, type, NULL, attrib_list, EGL_TRUE,
+   return _eglCreateSync(disp, type, attrib_list, EGL_TRUE,
                          EGL_BAD_ATTRIBUTE);
 }
 
@@ -1598,7 +1617,7 @@ eglCreateSync(EGLDisplay dpy, EGLenum type, const EGLAttrib *attrib_list)
 {
    _EGLDisplay *disp = _eglLockDisplay(dpy);
    _EGL_FUNC_START(disp, EGL_OBJECT_DISPLAY_KHR, NULL, EGL_FALSE);
-   return _eglCreateSync(disp, type, NULL, attrib_list, EGL_TRUE,
+   return _eglCreateSync(disp, type, attrib_list, EGL_TRUE,
                          EGL_BAD_PARAMETER);
 }
 
diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h
index 5d9c1b8..b9bcc8e 100644
--- a/src/egl/main/eglapi.h
+++ b/src/egl/main/eglapi.h
@@ -135,8 +135,7 @@ struct _egl_api
                                  _EGLImage *image);
 
    _EGLSync *(*CreateSyncKHR)(_EGLDriver *drv, _EGLDisplay *dpy, EGLenum type,
-                              const EGLint *attrib_list,
-                              const EGLAttrib *attrib_list64);
+                              const EGLAttrib *attrib_list);
    EGLBoolean (*DestroySyncKHR)(_EGLDriver *drv, _EGLDisplay *dpy,
                                 _EGLSync *sync);
    EGLint (*ClientWaitSyncKHR)(_EGLDriver *drv, _EGLDisplay *dpy,
diff --git a/src/egl/main/eglsync.c b/src/egl/main/eglsync.c
index afb724f..dea324b 100644
--- a/src/egl/main/eglsync.c
+++ b/src/egl/main/eglsync.c
@@ -39,37 +39,7 @@
  * Parse the list of sync attributes and return the proper error code.
  */
 static EGLint
-_eglParseSyncAttribList(_EGLSync *sync, const EGLint *attrib_list)
-{
-   EGLint i;
-
-   if (!attrib_list)
-      return EGL_SUCCESS;
-
-   for (i = 0; attrib_list[i] != EGL_NONE; i++) {
-      EGLint attr = attrib_list[i++];
-      EGLint val = attrib_list[i];
-      EGLint err = EGL_SUCCESS;
-
-      switch (attr) {
-      default:
-         (void) val;
-         err = EGL_BAD_ATTRIBUTE;
-         break;
-      }
-
-      if (err != EGL_SUCCESS) {
-         _eglLog(_EGL_DEBUG, "bad sync attribute 0x%04x", attr);
-         return err;
-      }
-   }
-
-   return EGL_SUCCESS;
-}
-
-
-static EGLint
-_eglParseSyncAttribList64(_EGLSync *sync, const EGLAttrib *attrib_list)
+_eglParseSyncAttribList(_EGLSync *sync, const EGLAttrib *attrib_list)
 {
    EGLint i;
 
@@ -106,7 +76,7 @@ _eglParseSyncAttribList64(_EGLSync *sync, const EGLAttrib *attrib_list)
 
 EGLBoolean
 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
-             const EGLint *attrib_list, const EGLAttrib *attrib_list64)
+             const EGLAttrib *attrib_list)
 {
    EGLint err;
 
@@ -122,11 +92,7 @@ _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
       sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
    }
 
-   if (attrib_list64)
-      err = _eglParseSyncAttribList64(sync, attrib_list64);
-   else
-      err = _eglParseSyncAttribList(sync, attrib_list);
-
+   err = _eglParseSyncAttribList(sync, attrib_list);
    if (err != EGL_SUCCESS)
       return _eglError(err, "eglCreateSyncKHR");
 
diff --git a/src/egl/main/eglsync.h b/src/egl/main/eglsync.h
index 9b2aac8..83b6f72 100644
--- a/src/egl/main/eglsync.h
+++ b/src/egl/main/eglsync.h
@@ -53,7 +53,7 @@ struct _egl_sync
 
 extern EGLBoolean
 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
-             const EGLint *attrib_list, const EGLAttrib *attrib_list64);
+             const EGLAttrib *attrib_list);
 
 
 extern EGLBoolean