Gilles Chanteperdrix wrote: > Hi, > > for review, here are patches that provide Xenomai skins with a > per-process per-skin data structures. It will allow skins to do > per-process cleanup for example, or the posix skin to maintain a > per-process signal mask.
That sounds promising! > > In order to use it, the skins must pass an eventcb function to the > xnshadow_register_interface service. This eventcb function gets called > when: > - a process bind the interfaces, the eventcb has to allocate the > per-process structure and must return a pointer to an xnppd_holder_t > member of this structure; > - the process exits, the eventcb function is then passed the > xnppd_holder_t pointer and may free the container structure. > > The patch also add a service called xnppd_get, which must be passed the > skin magic, and returns the xnppd_holder_t pointer attached to the > current process. > > This support relies on a new adeos event called "PEXIT" for > process-exit, that get triggered in the mmput function when a process > mm_struct get deallocated. Likely I did not yet get the full picture: What prevents using another adeos per-task key for this? And why is it required to establish a new termination hook? Are there scenarios where the existing task-termination hook is not suited for the planned cleanup work? > > These patches are not ready for inclusion, they are not tested > yet. > Jan
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