--- libelwix/src/mem.c	2015/06/25 16:49:33	1.4.18.3
+++ libelwix/src/mem.c	2015/06/25 16:59:50	1.4.18.4
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: mem.c,v 1.4.18.3 2015/06/25 16:49:33 misho Exp $
+* $Id: mem.c,v 1.4.18.4 2015/06/25 16:59:50 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -775,13 +775,22 @@ xdump_show(u_int size, u_int act, u_int inact)
 /*
  * mpool_xdump() - Dump elwix memory pool statistics
  *
+ * @fmt = format string
  * return: none
  */
 void
-mpool_xdump()
+mpool_xdump(const char *fmt, ...)
 {
-	printf("\n%s(%d)\n------------------------------------------------------------\n", 
-			__func__, __LINE__);
+	va_list lst;
+
+	if (fmt) {
+		va_start(lst, fmt);
+		vprintf(fmt, lst);
+		va_end(lst);
+	} else
+		printf("\n%s(%d)\n", __func__, __LINE__);
+
+	printf("------------------------------------------------------------\n");
 	printf( " ELWIX memory pool ::\n"
 		"\t- quotas Current/Real/Max = %lu/%lu/%lu\n"
 		"\t- calls Alloc/Free/Cache = %lu/%lu/%lu\n"