Just return if there is nothing to wait for. We get SIGCHLD'ed on

the popen child process.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@80 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/mgt_child.c

@@ -188,7 +188,7 @@ child_pingpong(int a, short b, void *c)
 	time(&t);
 	mgt_child_request(child_pingpong_ccb, NULL, NULL, "ping %ld", t);
 	if (1) {
-		tv.tv_sec = 3;
+		tv.tv_sec = 30;
 		tv.tv_usec = 0;
 		evtimer_del(&ev_child_pingpong);
 		evtimer_add(&ev_child_pingpong, &tv);
@@ -284,6 +284,8 @@ mgt_sigchld(int a, short b, void *c)
 	printf("sig_chld(%d, %d, %p)\n", a, b, c);
 
 	p = wait4(-1, &status, WNOHANG, NULL);
+	if (p == 0)
+		return;
 	printf("pid = %d status = 0x%x\n", p, status);
 	assert(p == child_pid);