Fixed #21773 -- made daemon threads default in the development server.

Thanks clime for the report.

django/core/servers/basehttp.py

@@ -115,5 +115,13 @@ def run(addr, port, wsgi_handler, ipv6=False, threading=False):
     else:
         httpd_cls = WSGIServer
     httpd = httpd_cls(server_address, WSGIRequestHandler, ipv6=ipv6)
+    if threading:
+        # ThreadingMixIn.daemon_threads indicates how threads will behave on an
+        # abrupt shutdown; like quitting the server by the user or restarting
+        # by the auto-reloader. True means the server will not wait for thread
+        # termination before it quits. This will make auto-reloader faster
+        # and will prevent the need to kill the server manually if a thread
+        # isn't terminating correctly.
+        httpd.daemon_threads = True
     httpd.set_app(wsgi_handler)
     httpd.serve_forever()

docs/releases/1.8.txt

@@ -165,6 +165,8 @@ Management Commands
 * The :djadminopt:`--ignorenonexistent` option of the :djadmin:`loaddata`
   management command now ignores data for models that no longer exist.
 
+* :djadmin:`runserver` now uses daemon threads for faster reloading.
+
 Models
 ^^^^^^