RSB and C++ Model

[Chris Johns]

On 25/03/2014 4:41 am, Joel Sherrill wrote:
>
> On 3/24/2014 12:36 PM, Sebastian Huber wrote:
>> On 03/24/2014 06:14 PM, Joel Sherrill wrote:
>>> Hi
>>>
>>> My most recently built toolset seems to be using pthreads instead
>>> of the RTEMS thread code. Any ideas?
>>>
>> Its due to this patch:
>>
>> http://git.rtems.org/rtems-tools/tree/tools/4.11/gcc/gcc-rtems-thread-model-posix-1.diff
>>
>> We should really avoid using the POSIX GCC thread model.  Its too
>> dangerous due to the silent errors.

Yes this is true but it did not fail in the way the RTEMS wrapper did 
with SMP. I felt it was the lesser of 2 bad situations.

I also suspect the issue with gcc and the POSIX thread support is still 
open and will need to be addressed. As far as I understand the mingw64 
tools uses POSIX rather than the win32 thread model with an add on 
pthread library.

> I knew the patch and the problem. I was surprised it was included and
> wanted to confirm that we agreed it shouldn't be.
>
> Should I put together a patch for the RSB?
>

If we keep using the wrapper that is fine and I will review a patch once 
the gxx wrapper changes to fix it have been completed and merged into 
master. Sebastian, how is the gxx_wrapper code tested ?

Long term I feel the posix thread model maybe a better path because it 
means we need just one supported interface with gcc. The c++11 threading 
support will also require pthreads.

Chris