Am 08.05.2013 um 17:09 schrieb Curtis Dutton <curtd...@gmail.com>: > As far as capturing output, I'll just write any errors encountered to > stderr. That is perfectly fine as far as I'm concerned. I just had a hard > time finding out where the linuxcnc logs were located. I couldn't find them > in the documentation via search, or in the wiki either.
It's a good example of one in a long list of cleanups due, as LinuxCNC sports a, hm, 'organically grown architecture' here ;) we currently have: in an RT build: - RT component messages go to the kernel log (printk) - however messages generated in the motion module, which happen to be funnelled to milltask, the coordinator, have the potential to wind up on a UI - messages by userland HAL components (like you VFD driver) wind up in stderr which goes to a log file - a 'message level' applies to all RT components alike, however message levels for userland components are all one-per-component however, in a 'sim' build (and those rules apply to early Xenomai- and RT-Preempt versions as well) we have: - RT and userland component messages go to stderr (rt-preempt) and a xenomai-specific destination (xenomai) - exceptions for motion as above meaning: non-motion messages delivered to UI's: not possible; rest of them: make sure you know where to dig -- the code base which should become available later this year addresses this as follows: - there is a single error message queue accessible by all components, living in a shared memory segment, and independent of RTOS style and component style - all messages are tagged by origin and level - there are two message levels; one for RT components, and one for the rest of them, to determine disposition - disposition happens in a demon which receives all messages and may log/forward as needed - for instance to UI's - Michael ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
