On Fri, Apr 13, 2007 at 11:15:21AM -0400, Bob Rossi wrote: >On Fri, Apr 13, 2007 at 11:03:56AM -0400, Christopher Faylor wrote: >> >Ok, there's a difference between tty and notty mode here. I can >> >reproduce this with notty, while I get a -1/EINTR with CYGWIN=tty. >> >This is a bit unfortunate difference which is probably a result of >> >different handling of console handles (notty) vs. pipe handles (tty). >> >I'm not sure how to fix that. Signals and select are rather Chris' >> >contruction lot. >> >> I'm not in a position to test this right now but, if cygwin is in >> blocking mode, i.e., select is in an infinite wait, it should be >> possible to use CTRL-Z to suspend it. I will look into this once I have >> my computers put back together. > >OK, thank you. The test case easily reproduces this behavior. > >What I'm really wondering is if I should hold up a release of cgdb over >this. I could do one of several things > - wait to do a release until select is changed > - tell the user to use CYGWIN=tty if they want to do ctrl-z > - add my hack to fix this problem with the way things are
We have no plans on releasing a new version of Cygwin anytime soon. >> >The restart behaviour as you observed on Linux is not implemented for >> >select in Cygwin so far. Only a few system calls actually implement >> >this right now. You should always handle EINTR yourself, as your loop >> >already does. >> > >> >While that's not a nice solution in the long run, it might be better >> >to ask the use to run cgdb with CYGWIN=tty for now (which is default >> >in remote sessions, that's why I couldn't reproduce anything first). >> >You could for instance add a cgdb wrapper script which always adds tty >> >to $CYGWIN and starts the cgdb binary. >> >> Or start gdb in a pty. > >Sorry, I'm not sure what you mean. If you are talking about the way cgdb >starts gdb, yes, it uses a pty. CTRL-Z works in a pty. There is no difference between running under a pty or running with CYGWIN=tty. 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/
