Xine assert() replacement:

All assert() function calls, with exceptions of libdvdread and libdvdnav, have been
replaced with XINE_ASSERT. Functionally XINE_ASSERT behaves just likes its predecesor but its
adding the ability to print out a stack trace at the point where the assertion fails.
So here are a few examples.
assert (0);
This use of assert was found in a couple locations most favorably being the default case of a switch
statement. This was the only thing there. So if the switch statement was unable to find a match
it would have defaulted to this and the user and the developers would be stuck wonder who died and where.
So it has been replaced with
XINE_ASSERT(0, "We have reach this point and don't have a default case");
It may seem a bit none descriptive but there is more going on behind the scene.
In addition to checking a condition is true/false, in this case '0', the XINE_ASSERT
prints out:
<filename>:<function name>:<line number> - assertion '<assertion expression>' failed. <description>
An example of this might be:
input_dvd.c:open_plugin:1178 - assertion '0' failed. xine_malloc failed!!! You have run out of memory
XINE_ASSERT and its helper function, print_trace, are found in src/xine-utils/xineutils.h

CVS patchset: 4301
CVS date: 2003/02/28 02:51:47

1 files changed, 2 insertions, 3 deletions

diff --git a/src/xine-engine/video_out.c b/src/xine-engine/video_out.c
index faee09e35..7f4001ed8 100644
--- a/src/xine-engine/video_out.c
+++ b/src/xine-engine/video_out.c
@@ -17,7 +17,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
  *
- * $Id: video_out.c,v 1.146 2003/02/22 14:22:13 mroi Exp $
+ * $Id: video_out.c,v 1.147 2003/02/28 02:51:51 storri Exp $
  *
  * frame allocation / queuing / scheduling / output functions
  */
@@ -34,7 +34,6 @@
 #include <string.h>
 #include <zlib.h>
 #include <pthread.h>
-#include <assert.h>
 
 #define XINE_ENABLE_EXPERIMENTAL_FEATURES
 
@@ -126,7 +125,7 @@ static void vo_append_to_img_buf_queue_int (img_buf_fifo_t *queue,
 					vo_frame_t *img) {
 
   /* img already enqueue? (serious leak) */
-  assert (img->next==NULL);
+  XINE_ASSERT (img->next==NULL, "Image is already enqueue. Next image is not NULL");
 
   img->next = NULL;