From: Michal Nowak <mnowak@isc.org>
Date: Wed, 8 Nov 2023 18:21:30 +0000 (+0100)
Subject: Add support for recording named runtime with rr
X-Git-Tag: v9.19.19~17^2~2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e088e8a992008ba5e0dc1c540f808a03e69cd619;p=thirdparty%2Fbind9.git

Add support for recording named runtime with rr

The traces of the named process are stored in the directory
$system_test/nsX/named-Y/.
---

diff --git a/bin/tests/system/README.md b/bin/tests/system/README.md
index 1d4d4f7b667..b4e6f4ed55f 100644
--- a/bin/tests/system/README.md
+++ b/bin/tests/system/README.md
@@ -114,6 +114,13 @@ Alternately, using the make command is also supported:
 
     make [-j numproc] test
 
+### rr
+
+When running system tests, named can be run under the rr tool. rr records a
+trace to the $system_test/nsX/named-Y/ directory, which can be later used to
+replay named. To enable this, execute start.pl with the USE_RR environment
+variable set.
+
 ### Test Artifacts
 
 Each test module is executed inside a unique temporary directory which contains
diff --git a/bin/tests/system/start.pl b/bin/tests/system/start.pl
index 38ceb6e6b39..32d20741688 100755
--- a/bin/tests/system/start.pl
+++ b/bin/tests/system/start.pl
@@ -232,6 +232,9 @@ sub construct_ns_command {
 
 	if ($taskset) {
 		$command = "taskset $taskset $NAMED ";
+	} elsif ($ENV{'USE_RR'}) {
+		$ENV{'_RR_TRACE_DIR'} = ".";
+		$command = "rr record --chaos $NAMED ";
 	} else {
 		$command = "$NAMED ";
 	}