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It's with a heavy heart that I remove libowfat as my event library from
opentracker.
libowfat is what taught opentracker to walk and then fly. The tracker was
literally standing on the shoulder of giants when I started writing it in
2006. For its time, the event abstraction was unparalleled and it has
held up for many years, and it served the bittorrent community greatly.
https://erdgeist.org/gitweb/opentracker/commit/?id=ad472597c569568bad0526d116b601dfcb36638c
Unfortunately, it is very likely that libowfat will not be maintained
anymore for the foreseeable future, it is already not easy to get its
source from upstream and opentracker started receiving bug reports that I
can not reasonably answer or patch.
Before the project gets more dependent on the limitations of libowfat's
current state, I need to teach opentracker to stand on its own feet and
fly by itself. I've learned a great deal in the process and have even
more respect now for what libowfat pioneered.
The path for opentracker is cleared now. Ground work has already been
laid in the migration process to support multi threaded http processing
while keeping the aggressive reduction of syscalls alive that made the
libowfat+opentracker combo so scalable.
Here be some dragons, though: Even though there is a unit test suite
now, the event loop's rewrite has not been battle tested yet. So you
might want to hold up for a bit before jumping on the solo band wagon.
What awaits at the end will be a long overdue v1.0, which will be named
in honour of Felix.
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default handler for the second SIGINT
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* lock passing between add_peer_to_torrent and return_peers_for_torrent is now avoided by providing a more general add_peer_to_torrent_and_return_peers function that can be used with NULL parameters to not return any peers (in sync case)
* in order to keep a fast overview how many torrents opentracker maintains, every mutex_bucket_unlock operation expects an additional integer parameter that tells ot_mutex.c how many torrents have been added or removed. A function mutex_get_torrent_count has been introduced.
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Introduced READ16/32 and WRITE16/32 makros to abstract loading/storing from unaligned addresses away on cpu's that can actually load/store everywhere
Removed all unnecessary memmoves, especially where it only moved 6 bytes in inner loop. I replaced them with WRITE16/32(READ16/32()) makros
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added a config file parser
added tracker id
changed WANT_CLOSED_TRACKER and WANT_BLACKLIST into WANT_ACCESS_WHITE and WANT_ACCESS_BLACK
changed WANT_TRACKER_SYNC to WANT_SYNC_BATCH and added WANT_SYNC_LIVE
added an option to switch off fullscrapes
cleaned up many internal hardcoded values, like PROTO_FLAG,
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and not considered stable.
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