task not relinquishing scheduler busy waiting..

[Chan Kim]

> Provided task 1 and 3 have the same priority, then you can use a yield (e.g.
> rtems_task_wake_after(RTEMS_YIELD_PROCESSOR)) in the busy waiting
> task to give other tasks of the same priority a chance to execute.
Dr. Sebastian,
Thank you very much for the reply.
That's a good information(I didn't know yield is for same priority) . I tried using yield but my thread 3 would actually start.
In my case, Init is of prirotiy 1, thread 3 is also priority 1. Can you give me another advice on this? 
sorry for asking questions not reading the documents much. (I'll switch to using event)
Chan




보낸 사람 : "Sebastian Huber" <sebastian.huber at embedded-brains.de>
보낸 날짜 : 2015-08-31 17:52:52 ( +09:00 )
받는 사람 : 김찬 <ckim at etri.re.kr>, users at rtems.org <users at rtems.org>
참조 : 
제목 : Re: task not relinquishing scheduler busy waiting..



On 31/08/15 10:28, Chan Kim wrote:
> But I realized rtems_task_start function only makes the thread in 'READY' state, but not actaully executes it.
> How do I make task 3 get a chance to run (take scheduler) when task 1 is busy waiting? should I set a scheduler algorithm?

Provided task 1 and 3 have the same priority, then you can use a yield 
(e.g. rtems_task_wake_after(RTEMS_YIELD_PROCESSOR)) in the busy waiting 
task to give other tasks of the same priority a chance to execute.

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Sebastian Huber, embedded brains GmbH

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