Working on that... it looks simple, but the code isn't giving me what I expected... /me grumbles looking at unknown APIs... Marc-André LAVERDIÈRE "Perseverance must finish its work so that you may be mature and complete, not lacking anything." -James 1:4 <a href="http://asimplediscipleslife.blogspot.com/">http://asimplediscipleslife.blogspot.com/</a> <a href="http://mlaverd.theunixplace.com">mlaverd.theunixplace.com</a> <div class="gmail_quote">On Mon, Nov 21, 2011 at 7:15 AM, Lionel Elie Mamane <<a href="mailto:lionel@mamane.lu">lionel@mamane.lu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <div class="im">On Mon, Nov 21, 2011 at 11:50:52AM +0000, Michael Meeks wrote: > On Sat, 2011-11-19 at 16:15 -0500, Marc-André Laverdière wrote: >> I am convincing some powers-that-be that having a build farm would >> be good, and they are starting to listen. This would really help me >> write patches for LO, as my poor computer is having impossibly long >> compile cycles. </div><div class="im">>> There is a bunch of somewhat old Linux workstations that could >> contribute to it. The concern is mostly that it should be so that the >> systems should not accept jobs when users are logged in, as it may >> interfere with whatever work it is that they are doing. </div>Maybe more interesting than "nobody logged on" would be "system load very low", e.g. "load <= 0.1*(number of cores)", possibly combined with "free memory + memory used for cache >= threshold". <div class="im"> > I'm sure they'd accept a patch to add a config option to use some > system heuristic before accepting a job. Of course, reliably detecting a > login session is prolly quite fun in itself ;-) ps ax | grep > gnome-session | kdeinit or something ? </div>Nah: #include <utmpx.h> struct utmpx *getutxent(void); struct utmpx *getutxid(const struct utmpx *); struct utmpx *getutxline(const struct utmpx *); struct utmpx *pututxline(const struct utmpx *); void setutxent(void); void endutxent(void); is the POSIX/SUS interface to do that. Or just run "/usr/bin/who -q" :) -- Lionel </blockquote></div>