Add a -w option to set the delay between updates.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1065 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishstat/varnishstat.1

@@ -11,6 +11,7 @@
 .Nm
 .Op Fl 1
 .Op Fl V
+.Op Fl w Ar delay
 .Sh DESCRIPTION
 The
 .Nm
@@ -25,6 +26,11 @@ Instead of presenting of a continuously updated display, print the
 statistics once and exit.
 .It Fl V
 Display the version number and exit.
+.It Fl w Ar delay
+Wait
+.Ar delay
+seconds between updates.
+The default is 1.
 .El
 .Pp
 The columns in the main display are, from left to right:
@@ -32,7 +38,7 @@ The columns in the main display are, from left to right:
 .It
 Total since startup
 .It
-Delta since last update (normally the last second)
+Delta since last update
 .It
 Average over process lifetime
 .It

bin/varnishstat/varnishstat.c

@@ -26,7 +26,7 @@ myexp(double *acc, double val, unsigned *n, unsigned nmax)
 }
 
 static void
-do_curses(struct varnish_stats *VSL_stats)
+do_curses(struct varnish_stats *VSL_stats, int delay)
 {
 	struct varnish_stats copy;
 	intmax_t ju;
@@ -92,14 +92,14 @@ do_curses(struct varnish_stats *VSL_stats)
 #undef MAC_STAT
 		lt = tt;
 		refresh();
-		sleep(1);
+		sleep(delay);
 	}
 }
 
 static void
 usage(void)
 {
-	fprintf(stderr, "usage: varnishstat [-1V]\n");
+	fprintf(stderr, "usage: varnishstat [-1V] [-w delay]\n");
 	exit(1);
 }
 
@@ -108,11 +108,11 @@ main(int argc, char **argv)
 {
 	int c;
 	struct varnish_stats *VSL_stats;
-	int once = 0;
+	int delay = 1, once = 0;
 
 	VSL_stats = VSL_OpenStats();
 
-	while ((c = getopt(argc, argv, "1V")) != -1) {
+	while ((c = getopt(argc, argv, "1Vw:")) != -1) {
 		switch (c) {
 		case '1':
 			once = 1;
@@ -120,13 +120,16 @@ main(int argc, char **argv)
 		case 'V':
 			varnish_version("varnishstat");
 			exit(0);
+		case 'w':
+			delay = atoi(optarg);
+			break;
 		default:
 			usage();
 		}
 	}
 
 	if (!once) {
-		do_curses(VSL_stats);
+		do_curses(VSL_stats, delay);
 	} else {
 
 #define MAC_STAT(n,t,f,d) \