Hello gtk-gnutella fans,
I'm pleased to announce that I just pushed my "thread" branch to "devel"
on github.
I've been working on this "thread" branch since the beginning of December 2013.
It took almost a year of effort to bring this to a usable state, starting
from scratch: everything is built on only two low-level features:
- pthread_create() for portable thread creation.
- GCC atomics __sync_bool_compare_and_swap() and __sync_synchronize().
The remaining was built on top of these: thread creation, joining, blocking,
cancellation, various new locks and multi-threaded objects (rw locks, barriers,
asynchronous queues, condition variables, to name a few).
Once the low-level runtime was ready, gtk-gnutella was made multi-threaded.
For instance, here is the output of:
echo thread list | gtk-gnutella --shell
on my system:
100~
# Flags LCK Sigs Evts STK Usage High Local Priv Name
0 -pMDR 0 0 0 76 2.73 74.48 79 37 "main"
1 ---CS 0 0 - 32 5.16 6.90 6 1 "time"
2 ---CS 0 0 - 32 5.37 17.04 13 0 "event queue"
3 ---CS 0 0 - 32 5.55 16.27 17 0 "ADNS"
4 ---CS 0 0 0 32 5.15 7.30 22 2 "verify SHA-1"
5 ---CS 0 0 0 32 5.15 8.74 29 2 "verify TTH"
6 ---CS 0 0 0 32 5.13 7.26 27 2 "moving"
7 ---CS 0 0 0 32 5.15 12.07 73 1 "library"
8 ---CR 0 0 - 32 5.30 6.26 12 0 "async shell handler"
.
which speaks for itself, doesn't it? :-)
Of course, everything is pretty unstable, was only tested on Linux, Windows
and FreeBSD. It's known to work on OS/X, but is not fully polished there.
If you have the opportunity and the willingness to test this "devel" branch,
I encourage you to grab the branch, compile it and run gtk-gnutella. Let me
know of any problems, crashes, etc... although they can get very nasty within
a multi-threaded environment (read: very hard to reproduce, diagnose and debug).
I've been running the threaded gtk-gnutella since mid-December on Linux and
FreeBSD, 24x7, and I believe things are stable enough to be released for
beta testing.
As usual, enjoy!
And Happy New Year 2014 to everyone!
Raphael
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