From: Justin Lebar <[email protected]> Subject: Re: [b2g] Bug 850175 Date: Sun, 28 Apr 2013 11:11:44 -0400
>> I know to avoid duplication is the saftest solution, but it usually >> introduces a lot of labor works. I rather like to let platform do >> that for us, or pretend it can do. > > Can shm_open be used to make a copy-on-write copy? > > If all we want to do is copy the memory, we can mmap files in tmpfs. > But I thought we wanted to copy the memory but then make it so that if > it's modified later, only one of the copies is modified. mmap(..., MAP_PRIVATE ...) can make an COW mapping. _______________________________________________ dev-b2g mailing list [email protected] https://lists.mozilla.org/listinfo/dev-b2g
