If mezz_term is not called by clients accessing mezzanine's shared mem,

mezzanine will let those clients' pids hang around in the pid table (basis
for notifying the clients of new frame data).  Eventually, the pid table
gets too full and would-be clients can't connect.  This is now fixed...

robots/mezzanine/libmezz/mezz.c

@@ -21,7 +21,7 @@
  * Desc: Mezzanine IPC wrapper
  * Author: Andrew Howard
  * Date: 28 Mar 2002
- * CVS: $Id: mezz.c,v 1.2 2004-12-15 05:05:40 johnsond Exp $ 
+ * CVS: $Id: mezz.c,v 1.3 2005-02-17 08:24:18 johnsond Exp $ 
  **************************************************************************/
 
 #include <errno.h>
@@ -137,6 +137,19 @@ int mezz_init(int create,char *ipcfilepath)
   signal(SIGUSR1, mezz_sigusr1);
   for (i = 0; i < sizeof(ipc->mmap->pids) / sizeof(ipc->mmap->pids[0]); i++)
   {
+      /* weed out stale pids */
+      if (ipc->mmap->pids[i] != 0) {
+	  if (kill(ipc->mmap->pids[i],0) == -1 && errno == ESRCH) {
+	      /* stale process */
+	      printf("stale %d\n",ipc->mmap->pids[i]);
+	      ipc->mmap->pids[i] = 0;
+	      break;
+	  }
+	  else {
+	      /* printf("not stale: %d\n",ipc->mmap->pids[i]); */
+	  }
+      }
+      
     if (ipc->mmap->pids[i] == 0)
       break;
   }