On Wed, 2007-05-09 at 09:07 +0200, Markus Osterried wrote: > Hello Gerum, > > sorry for not knowing the details. But there is another question. > Is it okay to move the pointer to the arguments to the newly created task? > Isn't it possible that the task which created the new task is rescheduled? > The old task could change the value of the argument and because the new > task only holds a reference to this argument, the new task is also > affected. >
Yes, such side-effect would be possible, not necessarily for the creator, but for the thread calling t_start() though. The worst case would happen when calling t_start() with args laid into the caller's stack space, and the caller unwinding the current frame immediately since it has a higher priority than the started thread. This boils down to one question: does actually pSOS pass the argument array by reference, or by value? In the latter case, the current implementation would be wrong, otherwise, the side-effect would be admitted. -- Philippe. _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
