On Jan 16 15:10, Jay Foad wrote: > Corinna Vinschen wrote: > > > mmap always allocates in 64K chunks. > > That doesn't seem to be true in practice. In the test below I mmap a > 1080K file (this is a multiple of 4K but not a multiple of 64K). The > first byte after the end of the file isn't readable.
Right. The reason is that mmap started to map memory top down at one point to fix a problem with Windows Vista. The mechanism to align the map always to 64K is still in Cygwin, but it currently doesn't work for files. I'll have a look into fixing that for Cygwin 1.7. 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/
