Messages in this thread | | | Date | Tue, 6 Apr 1999 07:44:11 +0200 | From | Janos Farkas <> | Subject | Re: Thread hang problem on 2.2.4 |
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Hi!
On 1999-04-05 at 17:02:01, Chris R. Jones wrote: > I've been working on a linux program which uses threads very heavily, > and I believe I've encountered a bug with either the linux kernel or > glibc & linux-threads.
Aha!
The problem you described sounds very-very similar to one I'm having; but in my case, it's happening with a binary-only application, so I could not proceed to debug by narrowing down to simpler test cases :)
My findings are detailed in a post with the subject "of staroffice 5.0, linux 2.2 and select()", [Message-ID: <priv$8dd116564$26f4d@lk9qw.mail.eon.ml.org>] but the very short version that it seems to be caused by 2.2-pre8 (2.2-pre7 worked fine), and in that particular version, reverting the select.c/poll.h changes to the pre7 version are sufficient to get rid of the problem. Can you confirm it's the same problem? (I.e. by trying at least 2.2-pre7 and 2.2-pre8?)
However, I'm more and more beginning to see that the select/poll changes are not the "real" culprit, but funnily they are enough to invoke the problem. I'll continue to look at the rest of the code
> Basically, the problem is this: In a single process, I create three > threads: one which serves as a listener for TCP/IP connections, > the next which serves as the 'server' end of a TCP/IP socket which is created > by the listener thread, and finally a socket for the 'client' end of > the TCP/IP socket which connects to the 'server' end of the TCP/IP socket > through a connect() call (which is serviced by the listner thread).
Footnote: possibly this is what staroffice is doing also...
Janos
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