From 8e5281fbe1a7b9beea77b93a9cdd1e842a3edfa0 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Wed, 12 Jan 2005 21:04:03 +0000
Subject: Simplify usage of drmHash functions and fix bug in
 __driGarbageCollectDrawables which would get confused while walking the hash
 values.

---
 src/mesa/drivers/dri/common/dri_util.c | 45 ++++++++--------------------------
 1 file changed, 10 insertions(+), 35 deletions(-)

(limited to 'src/mesa/drivers')

diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c
index 33facbbf6c..eff21af0ea 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -235,34 +235,13 @@ static GLboolean __driAddDrawable(void *drawHash, __DRIdrawable *pdraw)
 static __DRIdrawable *__driFindDrawable(void *drawHash, __DRIid draw)
 {
     int retcode;
-    union 
-    {
-	__DRIdrawable *pdraw;
-	void *ptr;
-    } p;
+    __DRIdrawable *pdraw;
 
-    retcode = drmHashLookup(drawHash, draw, &p.ptr);
+    retcode = drmHashLookup(drawHash, draw, (void *)&pdraw);
     if (retcode)
 	return NULL;
 
-    return p.pdraw;
-}
-
-static void __driRemoveDrawable(void *drawHash, __DRIdrawable *pdraw)
-{
-    int retcode;
-    union 
-    {
-	__DRIdrawablePrivate *pdp;
-	void *ptr;
-    } p;
-
-    p.pdp = (__DRIdrawablePrivate *)pdraw->private;
-
-    retcode = drmHashLookup(drawHash, p.pdp->draw, &p.ptr);
-    if (!retcode) { /* Found */
-	drmHashDelete(drawHash, p.pdp->draw);
-    }
+    return pdraw;
 }
 
 #ifndef DRI_NEW_INTERFACE_ONLY
@@ -320,24 +299,20 @@ static void __driGarbageCollectDrawables(void *drawHash)
 {
     __DRIid draw;
     __DRInativeDisplay *dpy;
-    union 
-    {
-	__DRIdrawable *pdraw;
-	void *ptr;
-    } p;
+    __DRIdrawable *pdraw;
 
-    if (drmHashFirst(drawHash, &draw, &p.ptr)) {
+    if (drmHashFirst(drawHash, &draw, (void *)&pdraw) == 1) {
 	do {
-	    __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)p.pdraw->private;
+	    __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)pdraw->private;
 	    dpy = pdp->driScreenPriv->display;
 	    if (! (*window_exists)(dpy, draw)) {
 		/* Destroy the local drawable data in the hash table, if the
 		   drawable no longer exists in the Xserver */
-		__driRemoveDrawable(drawHash, p.pdraw);
-		(*p.pdraw->destroyDrawable)(dpy, p.pdraw->private);
-		_mesa_free(p.pdraw);
+	        drmHashDelete(drawHash, draw);
+		(*pdraw->destroyDrawable)(dpy, pdraw->private);
+		_mesa_free(pdraw);
 	    }
-	} while (drmHashNext(drawHash, &draw, &p.ptr));
+	} while (drmHashNext(drawHash, &draw, (void *)&pdraw) == 1);
     }
 }
 
-- 
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