rtems_semaphore_obtain error

Till Straumann strauman at slac.stanford.edu
Fri Jan 25 20:18:22 UTC 2008


Jerry Needell wrote:
> My application is entering Internal_error_Occurred  from 
> rtems_semaphore_obtain. The call to rtems_semaphore obtain is coming 
> from  internally from rtems as I am not using semaphore in my 
> application. I have not tracked it down yet. thin interesting point is 
> that in the source for rtems_semaphore_obtain, the las line is:
>
>  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
>
>   
This is not the only case where RTEMS_INTERNAL_ERROR
is returned. The most likely cause of this type of error
is a semaphore being taken from a section of code
that is protected from preemption or interrupts.

-- Till
> but it is being reached!!
>
> Does anyone have any suggestions for potential culprits.
>
> BTW: I am using the sparc leon3 bsp in rtems 4.8
>
> - Jerry
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>   





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