--- libelwix/src/pio.c	2013/12/05 15:13:58	1.1.2.3
+++ libelwix/src/pio.c	2013/12/05 15:38:14	1.1.2.4
@@ -198,3 +198,36 @@ pio_pgetpid(FILE * __restrict iop)
 
 	return p;
 }
+
+/*
+ * pio_pchkpid() - Check exit status of child programs
+ *
+ * @pids = return tagPIOPID structures of exited programs, 
+ * 		if !=NULL must call array_Destroy()
+ * return: -1 error or >-1 exited programs
+ */
+int
+pio_pchkpid(array_t ** __restrict pids)
+{
+	register int ret = 0;
+	struct tagPIOPID *p;
+	array_t *pa;
+
+	if (pids) {
+		if (!(pa = array_Init(0)))
+			return -1;
+		else
+			*pids = pa;
+	}
+
+	THREAD_LOCK();
+	SLIST_FOREACH(p, &pio_pidlist, next)
+		if (p->fp && waitpid(p->pid, &p->stat, WNOHANG) > 0) {
+			if (pids)
+				array_Push(pa, p, 0);
+			ret++;
+		}
+	THREAD_UNLOCK();
+
+	return ret;
+}