On Mon, Jan 14, 2013 at 11:09:07AM -0500, Benoit Jacob wrote: > 2013/1/14 Mike Hommey <m...@glandium.org> > > > On Mon, Jan 14, 2013 at 11:43:44AM +1300, Robert O'Callahan wrote: > > > I need a big read-only buffer full of zeroes. On Linux I could mmap > > > /dev/zero read-only, and something similar on Windows/Mac I'm sure, but > > do > > > we already have code for that, or better yet something like that already > > > mapped into memory? > > > > You could just use calloc(). Jemalloc will do the appropriate thing. > > > > Out of curiosity, how can it? Since the block returned by calloc is not > read-only, how would a subsequent non-zero write be handled?
It doesn't set it as read-only, so that depends if roc really needs the buffer to be read-only or not. Mike _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
