how to get mmap page size?

I have an application that wants to use mmap() to read a file, but only if it can guarantee that this will leave one or more zero bytes after the end of the contents of the file in memory: if ((filesize (pagesize - 1) != 0) use_mmap(); else use_read(); How do I get the appropriate

Re: how to get mmap page size?

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. $ cat mmaptest.c #include fcntl.h #include

Re: how to get mmap page size?

Corinna Vinschen wrote: 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

control key stops working

combinations print other funny characters. Any idea what's going on, what causes it, and/or how I can fix it? (Google didn't help me, but then I wasn't really sure what to Google for.) $ uname -a CYGWIN_NT-6.1-WOW64 Jay-Foad-W7 1.7.7(0.230/5/3) 2010-08-31 09:58 i686 Cygwin Thanks, Jay. -- Problem