I am seing the same thing, after running emc & your shm_tester a couple of times, ipcs gets some cruft, and I can not start emc again ... shm_tester segfaults ....
Trying to investigate .... / regards Lars Segerlund 2011/6/18 Michael Abel <michael.a...@isw.uni-stuttgart.de>: > > Hello Guys, > > I probably found the problem, why you sometimes have to call halcmd as > root to get emc started again. But I don't have a bugfix up to now. > > It seems like the complete hal shared memory is not given back to the os > when emc is closed and my shm_tester is still running. For that reason you > can still access the memory when emc has quit. When halcmd is started > from the root account, the memory is also still there, but its possible > to start emc again. > > This is printed after emc has quit: > > $ halcmd -V status > HAL: initializing component 'halcmd26165' > HAL: component 'halcmd26165' initialized, ID = 26165 > HAL locking status: > current lock value 0 (00) > HAL_LOCK_NONE - nothing is locked > HAL memory status > used/total shared memory: 48238/262000 > active/recycled components: 1/12 > active/recycled pins: 0/417 > active/recycled parameters: 0/65 > active/recycled aliases: 0/0 > active/recycled signals: 36/0 > active/recycled functions: 0/17 > active/recycled threads: 1/0 > HAL: removing component 26165 > HAL: component 26165 removed, name = 'halcmd26165' > > > One can also see that there is shared memory left with ipcs: > > ipcs -m -p | grep <old_pid_of_rtapi_app> > > Does somebody know, how the rtai version of emc is handling hal shared > memory? Is it still there after closing emc? > > Greetings, > Michael > > > > ------------------------------------------------------------------------------ > EditLive Enterprise is the world's most technically advanced content > authoring tool. Experience the power of Track Changes, Inline Image > Editing and ensure content is compliant with Accessibility Checking. > http://p.sf.net/sfu/ephox-dev2dev > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
