1 files changed, 20 insertions, 0 deletions
diff --git a/testing/mozbase/mozprocess/tests/scripts/infinite_loop.py b/testing/mozbase/mozprocess/tests/scripts/infinite_loop.py
new file mode 100644
index 0000000000..74c2b630a4
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/scripts/infinite_loop.py
@@ -0,0 +1,20 @@
+from __future__ import absolute_import
+
+import threading
+import time
+import sys
+import signal
+
+if "deadlock" in sys.argv:
+    lock = threading.Lock()
+
+    def trap(sig, frame):
+        lock.acquire()
+
+    # get the lock once
+    lock.acquire()
+    # and take it again on SIGTERM signal: deadlock.
+    signal.signal(signal.SIGTERM, trap)
+
+while 1:
+    time.sleep(1)