[src/trunk]: src/tests/net/icmp Replace usleep(500000) with a synchronization...

[alnsn <alnsn%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0429ce49956b
branches:  trunk
changeset: 781405:0429ce49956b
user:      alnsn <alnsn%NetBSD.org@localhost>
date:      Tue Sep 04 22:31:58 2012 +0000

description:
Replace usleep(500000) with a synchronization over a pipe.

diffstat:

 tests/net/icmp/t_ping.c |  15 ++++++++++++---
 1 files changed, 12 insertions(+), 3 deletions(-)

diffs (49 lines):

diff -r 16d3ae779379 -r 0429ce49956b tests/net/icmp/t_ping.c
--- a/tests/net/icmp/t_ping.c   Tue Sep 04 13:37:41 2012 +0000
+++ b/tests/net/icmp/t_ping.c   Tue Sep 04 22:31:58 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_ping.c,v 1.14 2011/06/26 13:15:22 christos Exp $     */
+/*     $NetBSD: t_ping.c,v 1.15 2012/09/04 22:31:58 alnsn Exp $        */
 
 /*-
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: t_ping.c,v 1.14 2011/06/26 13:15:22 christos Exp $");
+__RCSID("$NetBSD: t_ping.c,v 1.15 2012/09/04 22:31:58 alnsn Exp $");
 #endif /* not lint */
 
 #include <sys/types.h>
@@ -68,6 +68,10 @@
        char ifname[IFNAMSIZ];
        pid_t cpid;
        bool win, win2;
+       char token;
+       int channel[2];
+
+       RL(pipe(channel));
 
        cpid = fork();
        rump_init();
@@ -78,13 +82,18 @@
                atf_tc_fail_errno("fork failed");
        case 0:
                netcfg_rump_if(ifname, "1.1.1.10", "255.255.255.0");
+               close(channel[0]);
+               ATF_CHECK(write(channel[1], "U", 1) == 1);
+               close(channel[1]);
                pause();
                break;
        default:
                break;
        }
 
-       usleep(500000);
+       close(channel[1]);
+       ATF_CHECK(read(channel[0], &token, 1) == 1 && token == 'U');
+       close(channel[0]);
 
        netcfg_rump_if(ifname, "1.1.1.20", "255.255.255.0");