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egl: Add back handle checking.

Browse source 
Handle checking was done using hash tables.  Now that they are gone, we
have to loop over the lists.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
This commit is contained in:
Chia-I Wu 2009-08-14 18:02:38 +08:00 • committed by Brian Paul
parent e3734e4685
commit e484a92928
2 changed files with 116 additions and 2 deletions
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66
src/egl/main/egldisplay.c
View file

@ -275,3 +275,69 @@ _eglUnlinkSurface(_EGLSurface *surf)
surf->Next = NULL;
surf->Display = NULL;
}
#ifndef _EGL_SKIP_HANDLE_CHECK
/**
* Return EGL_TRUE if the given handle is a valid handle to a display.
*/
EGLBoolean
_eglCheckDisplayHandle(EGLDisplay dpy)
{
_EGLDisplay *cur;
_eglLockMutex(_eglGlobal.Mutex);
cur = _eglGlobal.DisplayList;
while (cur) {
if (cur == (_EGLDisplay *) dpy)
break;
cur = cur->Next;
}
_eglUnlockMutex(_eglGlobal.Mutex);
return (cur != NULL);
}
/**
* Return EGL_TRUE if the given handle is a valid handle to a context.
*/
EGLBoolean
_eglCheckContextHandle(EGLContext ctx, _EGLDisplay *dpy)
{
_EGLContext *cur;
cur = dpy->ContextList;
while (cur) {
if (cur == (_EGLContext *) ctx) {
assert(cur->Display == dpy);
break;
}
cur = cur->Next;
}
return (cur != NULL);
}
/**
* Return EGL_TRUE if the given handle is a valid handle to a surface.
*/
EGLBoolean
_eglCheckSurfaceHandle(EGLSurface surf, _EGLDisplay *dpy)
{
_EGLSurface *cur;
cur = dpy->SurfaceList;
while (cur) {
if (cur == (_EGLSurface *) surf) {
assert(cur->Display == dpy);
break;
}
cur = cur->Next;
}
return (cur != NULL);
}
#endif /* !_EGL_SKIP_HANDLE_CHECK */

52
src/egl/main/egldisplay.h
View file

@ -105,6 +105,48 @@ extern void
_eglUnlinkSurface(_EGLSurface *surf);
#ifndef _EGL_SKIP_HANDLE_CHECK
extern EGLBoolean
_eglCheckDisplayHandle(EGLDisplay dpy);
extern EGLBoolean
_eglCheckContextHandle(EGLContext ctx, _EGLDisplay *dpy);
extern EGLBoolean
_eglCheckSurfaceHandle(EGLSurface surf, _EGLDisplay *dpy);
#else /* !_EGL_SKIP_HANDLE_CHECK */
/* Only do a quick check. This is NOT standard compliant. */
static INLINE EGLBoolean
_eglCheckDisplayHandle(EGLDisplay dpy) { return EGL_TRUE; }
static INLINE EGLBoolean
_eglCheckContextHandle(EGLContext ctx, _EGLDisplay *dpy)
{
_EGLContext *c = (_EGLContext *) ctx;
return (c && c->Display == dpy);
}
static INLINE EGLBoolean
_eglCheckSurfaceHandle(EGLSurface surf, _EGLDisplay *dpy)
{
_EGLSurface *s = (_EGLSurface *) surf;
return (s && s->Display == dpy);
}
#endif /* _EGL_SKIP_HANDLE_CHECK */
/**
* Lookup a handle to find the linked display.
* Return NULL if the handle has no corresponding linked display.
@ -113,6 +155,8 @@ static INLINE _EGLDisplay *
_eglLookupDisplay(EGLDisplay display)
{
_EGLDisplay *dpy = (_EGLDisplay *) display;
if (!_eglCheckDisplayHandle(display))
dpy = NULL;
return dpy;
}
@ -145,7 +189,9 @@ static INLINE _EGLContext *
_eglLookupContext(EGLContext context, _EGLDisplay *dpy)
{
_EGLContext *ctx = (_EGLContext *) context;
return (ctx && ctx->Display) ? ctx : NULL;
if (!_eglCheckContextHandle(context, dpy))
ctx = NULL;
return ctx;
}
@ -177,7 +223,9 @@ static INLINE _EGLSurface *
_eglLookupSurface(EGLSurface surface, _EGLDisplay *dpy)
{
_EGLSurface *surf = (_EGLSurface *) surface;
return (surf && surf->Display) ? surf : NULL;
if (!_eglCheckSurfaceHandle(surf, dpy))
surf = NULL;
return surf;
}