SIGPOLL and named pipes

[Christopher Faylor]

On Sun, Aug 24, 2008 at 01:47:56PM +0200, Thomas Maier-Komor wrote:
>I don't get SIGPOLL on Cygwin in a software that runs fine on Linux and
>Solaris.  Is there a known issue concerning SIGPOLL and named pipes.

SIGPOLL (aka SIGIO) is not implemented in Cygwin.

>Additionally, there seem to be a bug in Cygwin concerning the
>concatenation of data written to a named pipe.  If I open the named
>pipe a second time with O_WRONLY, to make sure that there is always one
>valid open input to the named pipe, the data written to the pipe from
>different processes doesn't get concatenated and I have to close and
>reopen the named pipe.  This is in contrast to the behavior in Linux
>and Solaris, and POSIX semantics.

Named pipes in Cygwin 1.5.25 are only partially implemented.  They
should work better in 1.7.x.

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/