Mercurial > hg > mlmmj
view include/subscriberfuncs.h @ 843:2ea56ea4bd34
Add ability to subscribe to 'both' and avoid a deadlock when switching.
- 'both' means normal and digest versions simultaneously; information about
this feature is not included in the default list texts, but a few power users
find it helpful.
- Only take out locks when actually performing a subscription, not before
checking whether the address is already subscribed; we only really need it
when we are actually changing the file, and there is a potential deadlock
which could occur while waiting for unsubscription to complete as part of a
switch if the lock is taken earlier.
- Also moved code which sends unsubscription confirmations so that it only runs
once, after unsubsciption has been completed, not every time the address is
removed; this is only really important when 'both' is a realistic
subscription option, but it could avoid other double-sends as well.
author | Ben Schmidt |
---|---|
date | Wed, 25 Jan 2012 22:34:57 +1100 |
parents | 0f8242ffa2d0 |
children |
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/* Copyright (C) 2003 Mads Martin Joergensen <mmj at mmj.dk> * * $Id$ * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #ifndef SUBSCRIBERFUNC_H #define SUBSCRIBERFUNC_H off_t find_subscriber(int fd, const char *address); int is_subbed_in(const char *subddirname, const char *address); enum subtype is_subbed(const char *listdir, const char *address, int both); #endif /* SUBSCRIBERFUNC_H */