Use a very short loop timeout when testing

To allow test servers to shut down in a timely manner.

Also, some more debug logging.

src/ZEO/acceptor.py

@@ -128,9 +128,9 @@ class Acceptor(asyncore.dispatcher):
         else:
             logger.info("connect from %s: %s", repr(addr), c)
 
-    def loop(self):
+    def loop(self, timeout=30.0):
         try:
-            asyncore.loop(map=self.socket_map)
+            asyncore.loop(map=self.socket_map, timeout=timeout)
         except Exception:
             if not self.__closed:
                 raise # Unexpected exc
@@ -142,3 +142,4 @@ class Acceptor(asyncore.dispatcher):
         if not self.__closed:
             self.__closed = True
             asyncore.dispatcher.close(self)
+            logger.debug("Closed accepter, %s", len(self.socket_map))

src/ZEO/tests/forker.py

@@ -109,7 +109,7 @@ def runner(config, qin, qout, timeout=None,
         qout.put(server.server.acceptor.addr)
         logger.debug('ADDRESS SENT')
         thread = threading.Thread(
-            target=server.server.loop,
+            target=server.server.loop, kwargs=dict(timeout=.2),
             name = None if name is None else name + '-server',
             )
         thread.setDaemon(True)
@@ -121,6 +121,10 @@ def runner(config, qin, qout, timeout=None,
             pass
         server.server.close()
         thread.join(join_timeout)
+        if thread.is_alive():
+            logger.warning("server thread didn't stop")
+        else:
+            logger.debug('server thread stopped')
 
         if not keep:
             # Try to cleanup storage files