Hi, I'm logging what rtems_clock_get_ticks_since_boot returns to know when I call _Scheduler_priority_Ready_queue_enqueue and _Scheduler_priority_Ready_queue_extract, but I'm getting the same number, I can't tell the order. My question is, do you know if there is something I can call that gives me microsecond precision ?
regards, Catalin On Mon, Oct 22, 2018 at 4:37 PM Catalin Demergian <demerg...@gmail.com> wrote: > Hi, > I see _Scheduler_priority_Ready_queue_enqueue > calls _Chain_Append_unprotected > which has an interesting comment > * @note It does NOT disable interrupts to ensure the atomicity of the > * append operation. > > Catalin > > > On Mon, Oct 22, 2018 at 4:08 PM Sebastian Huber < > sebastian.hu...@embedded-brains.de> wrote: > >> On 22/10/2018 15:00, Catalin Demergian wrote: >> > I started to look in the ready queues implementation. I added a debug >> > patch tracing my tasks having priority=100. >> > The way I see it, a task can enter a ready queue only >> > >> with >> _Scheduler_priority_Ready_queue_enqueue/_Scheduler_priority_Ready_queue_enqueue_first >> > and can be removed only by _Scheduler_priority_Ready_queue_extract. >> >> Yes. >> >> > I logged what rtems_clock_get_ticks_since_boot returns for every task >> > and what I found was that for SCrx task this value is way behind the >> > value for >> > other tasks, meaning after a point is not added in the ready queue >> > anymore. >> > I tried with debugger too, following the next pointers to see what's >> > in the ready_queue[100] and my task is not there, even if I see the >> > state is ready >> > when doing task command in shell. >> > any idea what might be causing this? >> >> The thread state is Thread_Control::current_state, the code sequences to >> block/unblock a thread should take care that ready threads >> (current_state == 0) are visible to the scheduler (enqueued). Something >> might have gone wrong during a non-ready to ready thread state transition. >> >> -- >> Sebastian Huber, embedded brains GmbH >> >> Address : Dornierstr. 4, D-82178 Puchheim, Germany >> Phone : +49 89 189 47 41-16 >> Fax : +49 89 189 47 41-09 >> E-Mail : sebastian.hu...@embedded-brains.de >> PGP : Public key available on request. >> >> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. >> >>
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