.

wcfs/__init__.py

@@ -89,6 +89,8 @@ class Conn(object):
 # WatchLink represents /head/watch link opened on wcfs.
 #
 # .sendReq()/.recvReq() provides raw IO in terms of wcfs invalidation protocol messages.
+#
+# XXX safe/not-safe to access from multiple threads?
 class WatchLink(object):
 
     def __init__(wlink, wc):
@@ -125,6 +127,7 @@ class WatchLink(object):
         wlink._serveWG.go(wlink._serveRX)
 
         # this tWatchLink currently watches the following files at particular state.
+        # XXX back -> tWatchLink ?
         wlink._watching = {}    # {} foid -> tWatch
 
     # ---- WatchLink message IO ----