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Error Value


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estou com um problema para identificar o tipo de erro que ocorre quando uso pthread_setschedparam().

É retornado o valor 22. No entanto, não consigo perceber que tipo de erro é.

No manpage tem:


On error, pthread_setschedparam returns the following error codes:


    policy is not SCHED_OTHER.


    One of the arguments is invalid, or the priority value specified by param is not valid for the specified policy.


    The target_thread is invalid or has already terminated

On error, pthread_getschedparam returns the following error codes:


    the target_thread is invalid or has already terminated

Mas quando tento usar "EINVAL" dá-me um tipo de erro a compilar:

`ENOSYS' undeclared (first use in this function)

Alguém sabe dizer-me como dar a volta a isto? Estive a pesquisar mas ainda não vi nada que me pudesse ajudar...

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