On Sat, Feb 19, 2011 at 04:26:56AM -0500, Tavian Barnes wrote: snip
- There's no portable way to get the number of available cores. Where does platform-specific code go in libalpm? The way to do it on Linux is with sched_getaffinity(); sysconf(_SC_NPROCESSORS_ONLN) is almost as good and works on BSD too I believe.
No, I don't think it works on BSDs. You can look at how x264 guys implemented this. Check out x264_cpu_num_processors() in common/cpu.c in their source tree. I'm not sure hard-coding supported platforms through ifdefs would be accepted in pacman/libalpm.
Also, I guess a major question would be: would this be likely to be merged? It's not a major issue, but it's also not a very large change. Every time there's a KDE update or something similarly large I find myself wishing that all 2/4/24 of my cores were being used for the the integrity checks.
-- Tavian Barnes