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 1d4d4f7b66759c525fe089faea0bfa850013572c..b4e6f4ed55f5abbc163d2d947cf346a4b8dde153 100644 (file)
--- 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 38ceb6e6b39eab5722f333b3b630d341b8eb45a0..32d207416884a78bb11426e1807813ff804fe05d 100755 (executable)
--- 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 ";
        }