Merge pull request #9163 from mvdbeek/print_progress_improvements

[20.01] mulled: use threading.Event in PrintProgress to avoid unnecessary wai…

Author: jmchilton

lib/galaxy/tool_util/deps/mulled/util.py

@@ -8,7 +8,6 @@
 import sys
 import tarfile
 import threading
-import time
 from io import BytesIO
 
 import packaging.version
@@ -293,21 +292,21 @@ def split_container_name(name):
 class PrintProgress(object):
     def __init__(self):
         self.thread = threading.Thread(target=self.progress)
-        self.stop = False
+        self.stop = threading.Event()
 
     def progress(self):
-        while not self.stop:
+        while not self.stop.is_set():
             print(".", end="")
             sys.stdout.flush()
-            time.sleep(60)
+            self.stop.wait(60)
         print("")
 
     def __enter__(self):
         self.thread.start()
         return self
 
     def __exit__(self, exc_type, exc_val, exc_tb):
-        self.stop = True
+        self.stop.set()
         self.thread.join()