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Re: connect()/cygwin_select() hangs in >=1.5.15


Sunil wrote:

This piece of code hangs with cygwin1.dll >=1.5.15
during connect(), strace is attached. The same code
runs fine with cygwin1.dll version 1.5.13.

--------------------------------
 fd = socket (proto->family, 1,
       proto->stream_proto_num);

 if (fd < 0) {
  ;
  goto out;
 }

 if (options & LINK_CONNECTION_NONBLOCKING) {
# 553 "linc-connection.c"
  if (fcntl (fd, 4, 0x4000) < 0)
   goto out;

}

 if (fcntl (fd, 2, 1) < 0)
  goto out;

 { long int __result; do __result = (long int)
(connect (fd, saddr, saddr_len)); while (__result ==
-1L && (*__errno()) == 4); rv = __result; };
# 596 "linc-connection.c"
 if (rv && (*__errno()) != 119)
  goto out;

---------------------------

Similar problem with select() hang has been reported
earlier but nothing came out of it. I don't know if
its related. I am not sure why errno 119 is seen(see
panel.log) in this case, but that and the hang are the
common factors and strace looks similar.

http://www.cygwin.com/ml/cygwin/2005-04/msg01331.html

Above code piece is taken from linc-connection.c in
the orbit2-2.12.2 package. This function is reached by
the gnome-panel and it hangs inside connect() as is
evident from the strace in panel.log and all I get is
a blank gnome-panel.

As I said, all I have to do to get it to work is to go
back to 1.5.13 snapshot. I am not sure what changed
between 1.5.13 and 1.5.15 to cause this.

Thanks for looking into it.
Sunil

There were some fixes regarding this, try a pre 1.5.17 snapshot, please. I currently use the one from 2005-May-20 and everything socket related where I encountered problems works ok with that. http://cygwin.com/snapshots/


Gerrit -- =^..^=

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