/* -*-c-*-
*
- * $Id: xwait.c,v 1.6 1998/12/11 09:50:07 mdw Exp $
+ * $Id: xwait.c,v 1.7 1999/06/19 23:42:37 mdw Exp $
*
* Wait until prodded by another X client
*
/*----- Revision history --------------------------------------------------*
*
* $Log: xwait.c,v $
+ * Revision 1.7 1999/06/19 23:42:37 mdw
+ * Improve signal handling.
+ *
* Revision 1.6 1998/12/11 09:50:07 mdw
* Minor modifications to work with mLib and mgLib.
*
/*----- Header files ------------------------------------------------------*/
+#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
static void sigchld(int sig)
{
+ int e = errno;
while (waitpid(-1, 0, WNOHANG) > 0)
;
+ errno = e;
}
/* --- @main@ --- */
sa.sa_handler = sigchld;
sigemptyset(&sa.sa_mask);
sigaddset(&sa.sa_mask, SIGCHLD);
- sa.sa_flags = 0;
+ sa.sa_flags = SA_NOCLDSTOP;
+#ifdef SA_RESTART
+ sa.sa_flags |= SA_RESTART;
+#endif
sigaction(SIGCHLD, &sa, 0);
/* --- Now reap any which have been waiting around so far --- */