From 070a148127f49cf12cd9567594a18bcb64589aeb Mon Sep 17 00:00:00 2001
From: Li-Wen Hsu <lwhsu@FreeBSD.org>
Date: Tue, 25 Jul 2017 13:01:10 +0000
Subject: [PATCH] Add an auxiliary subroutine to generate read(2) event while
 testing.

Reviewed by:	gnn, ngie
Differential Revision:	https://reviews.freebsd.org/D11673
---
 .../dtraceUtil/tst.DestructWithFunction.d.ksh       | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/dtraceUtil/tst.DestructWithFunction.d.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/dtraceUtil/tst.DestructWithFunction.d.ksh
index 0259db367e94..3fe90f7a091f 100644
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/dtraceUtil/tst.DestructWithFunction.d.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/dtraceUtil/tst.DestructWithFunction.d.ksh
@@ -38,6 +38,14 @@
 ##
 
 
+reader()
+{
+	while true
+	do
+		sleep 0.1
+		cat /etc/motd > /dev/null
+	done
+}
 
 if [ $# != 1 ]; then
 	echo expected one argument: '<'dtrace-path'>'
@@ -46,6 +54,9 @@ fi
 
 dtrace=$1
 
+reader &
+child=$!
+
 $dtrace -qwf read'{chill(15); printf("Done chilling"); exit(0);}'
 status=$?
 
@@ -53,4 +64,6 @@ if [ "$status" -ne 0 ]; then
 	echo $tst: dtrace failed
 fi
 
+kill $child
+
 exit $status