Can coexists rtems tasks (Classic API) and posix task??

[Joel Sherrill]

Gedare is not mistaken. Classic tasks can make POSIX thread calls and vice versa.

Beware the pthreads are defined to exit silently deleting themselves and classic tasks consider this a fatal error.

Gedare Bloom <gedare at rtems.org> wrote:


Also note that you would need to "configure" your application
correctly so that the resources are available to create tasks of both
types, e.g.
#define CONFIGURE_MAXIMUM_TASKS 2
#define CONFIGURE_MAXIMUM_POSIX_THREADS 3

if you have 2 classic tasks and 3 pthreads.

On Fri, Aug 30, 2013 at 4:22 PM, Gedare Bloom <gedare at rtems.org> wrote:
> Yes. If I'm not mistaken, RTEMS tasks can also make posix calls.
>
> Posix thread priorities are mapped to the RTEMS internal priority
> range of 0-255 (realistically, 1-254, since 0 and 255 are reserved).
> Note that the pthread priorties are inverted, so a 1 becomes 254, the
> lowest schedulable priority in the system. After the mapping, the
> scheduler sees both types of tasks as the same. You can inspect how
> this is done when a pthread is created in the
> cpukit/posix/src/pthreadcreate.c.
>
> -Gedare
>
>
>
> On Fri, Aug 30, 2013 at 3:13 PM, Nicolás Alvarez <nicoalar.22 at gmail.com> wrote:
>> Hi all,
>>
>> It is possible to use in one app both kind of task? What is the scheduler
>> behavior?
>>
>> Regards,
>>
>> Ing. Nicolás Alvarez
>>
>>
>> _______________________________________________
>> rtems-users mailing list
>> rtems-users at rtems.org
>> http://www.rtems.org/mailman/listinfo/rtems-users
>>

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