added test to check for deadlock condition in async-written files

Note that this introduces a test case that breaks the current code. This
commit does NOT yet provide the necessary code patch. Thus make check
does currently hang.

1 files changed, 23 insertions, 0 deletions

diff --git a/tests/asynwr_deadlock.sh b/tests/asynwr_deadlock.sh
new file mode 100755
index 00000000..2d08419c
--- /dev/null
+++ b/tests/asynwr_deadlock.sh
@@ -0,0 +1,23 @@
+# This is test case from practice, with the version we introduced it, it
+# caused a deadlock on shutdown. I have added it to the test suite to automatically
+# detect such things in the future.
+#
+# added 2010-03-17 by Rgerhards
+# This file is part of the rsyslog project, released  under GPLv3
+echo ================================================================================
+echo TEST: \[asynwr_deadlock.sh\]: a case known to have caused a deadlock in the past
+source $srcdir/diag.sh init
+# uncomment for debugging support:
+export RSYSLOG_DEBUG="debug nostdout noprintmutexaction"
+export RSYSLOG_DEBUGLOG="log"
+source $srcdir/diag.sh startup asynwr_deadlock.conf
+# just send one message
+source $srcdir/diag.sh tcpflood -m1
+# sleep is important! need to make sure the instance is inactive
+sleep 1
+# now try shutdown. The actual test is if the process does hang here!
+echo "processing must continue soon"
+source $srcdir/diag.sh shutdown-when-empty # shut down rsyslogd when done processing messages
+source $srcdir/diag.sh wait-shutdown       # and wait for it to terminate
+source $srcdir/diag.sh seq-check 0 0
+source $srcdir/diag.sh exit