On Thu, Jun 22, 2006 at 06:53:38PM -0700, Brian Dessent wrote: >Linda Walsh wrote: > >> The attached test case is simple and fairly short. It does not >> depend on File::BOM (and has none of the code from it). >> >> It's only dependency (other than perl) is the POSIX module, >> where, from, the "fifo" command is taken. > >This appears to be a deadlock in the Cygwin DLL when both the reader and >writer end of a fifo tries to open the file at the same time (or nearly >the same time.) They end up signaling each other to ask about the other >end of the pipe, and hang there. It has nothing to do with perl or >fork, as far as I can tell -- the attached C testcase will work fine if >the reader end sleeps briefly to ensure the opening order. It's just a >classic race condition somewhere.
Yep. It's a deadlock which uncovered a race. It should be fixed in the next floor wax available at: http://cygwin.com/snapshots/ And thanks for the test case which illustrated the problem. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
