--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/galaxy/util/sleeper.py	Sat May 02 07:14:21 2020 -0400
@@ -0,0 +1,23 @@
+import threading
+
+
+class Sleeper(object):
+    """
+    Provides a 'sleep' method that sleeps for a number of seconds *unless*
+    the notify method is called (from a different thread).
+    """
+
+    def __init__(self):
+        self.condition = threading.Condition()
+
+    def sleep(self, seconds):
+        # Should this be in a try/finally block? -John
+        self.condition.acquire()
+        self.condition.wait(seconds)
+        self.condition.release()
+
+    def wake(self):
+        # Should this be in a try/finally block? -John
+        self.condition.acquire()
+        self.condition.notify()
+        self.condition.release()