Jan Kiszka wrote: > Gsellmann Peter wrote: >> Hi! >> >> I searched for a while and found this snippet >> >> RT_TASK *rt = rt_task_self(); >> int x = rt->thread_base.stat.csw; >> >> should give the number of context switches, but: >> RT_TASK in non-kernel mode is only RT_TASK_PLACEHOLDER so i have no >> access to thread_base! >> >> Is there an official way to get this info (w/o opening >> "/proc/xenomai/...")? >> > > Not yet. You could extend RT_TASK_INFO with this statistic (obtained via > rt_task_inquire). There is currently work in progress to add accumulated > execution times to the same interface, so this extension would fit quite > well. Patches always welcome.
Meanwhile, I added this feature to my experimental patch stack while integrating some other new stats. See http://www.rts.uni-hannover.de/rtaddon/patches/xenomai/ against Xenomai SVN trunk, namely http://www.rts.uni-hannover.de/rtaddon/patches/xenomai/enhance-thread-stats.patch Just call rt_task_inquire() and check RT_TASK_INFO::ctxswitches (there are modeswitches and pagefaults too as we are already at it). Feedback welcome! Jan
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