On Mar 31 14:08, Corinna Vinschen wrote: > On Mar 31 17:11, Yarlagadda Suresh wrote: > > Hi, > > > > I am using shmget()/shmat() methods for getting the shared memory. > > > > I had tried running the same program which is given in the previous > > mention thread, the results are same as mentioned over there. > > I just tried that testcase with Cygwin 1.7 and it appears to work most > of the time. Unfortunately I can still reproduce the problem once per > about 30 forks. > > I'll look into fixing this for Cygwin 1.7. However, please note that > there is no *really* foolproof method to fix this due to the way fork > has to be implemented using Win32 calls. I can only make it much more > unlikely than today.
I applied a patch to Cygwin which allocates the shmat() shared memory regions top-down, same as the mmap() regions. This should make the observed effect at fork() pretty unlikely. The patch will be in the next Cygwin 1.7.0 test release (in a couple of days). Thanks for the report, Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- 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/
