On Fri, Nov 29, 2013 at 7:45 AM, Pekka Paalanen <ppaala...@gmail.com> wrote: > Hi, > > I have been looking at RaspberryPi and especially how small the > filesystem for XDG_RUNTIME_DIR is. Well, Raspbian does not provide > XDG_RUNTIME_DIR, so you define that yourself. In any case, it is very > small, I am using /run/shm which is somewhere around 25 MB. > > Weston demos and also libwayland-cursor allocate all wl_shm buffers > from XDG_RUNTIME_DIR, therefore the free space on that file system is > important. > > If space on that file system runs out, ftruncate will not catch it. > Instead, apps will get a SIGBUS while trying to draw into the buffer. > > I am proposing to use posix_fallocate() to ensure at wl_shm_pool > allocation time that the space is actually reserved for the pool, and > SIGBUS cannot happen.
I think that sounds good and it's what we agreed on when we last discussed this on list. Thanks for putting the patches together. > Furthermore, I have fortified toytoolkit to deal gracefully with wl_shm > buffer allocation failures. Now you can e.g. resize weston-terminal > bigger and bigger until you run out of space. When you run out of > space, resizing stops, but the app stays usable. More details are in > the patch. > > No more randomly disappearing demo apps on the RPi. ;-) > (At least for this reason.) Very nice. All patches applied. Kristian > I will reply to this email with a couple of patches to wayland and > weston each. > > > Thanks, > pq > _______________________________________________ > wayland-devel mailing list > wayland-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/wayland-devel _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/wayland-devel