RFC: confdefs.h macro for C11 threads

Joel Sherrill joel at rtems.org
Mon Oct 9 23:36:10 UTC 2017

On Oct 9, 2017 6:30 PM, "Chris Johns" <chrisj at rtems.org> wrote:

On 9/10/17 4:01 pm, Sebastian Huber wrote:
> On 09/10/17 02:32, Chris Johns wrote:
>> [...]
>> How does a user use C11 threads on RTEMS for real applications? When I
>> looked I could not see a way to configure any runtime parameters like
stack or
>> priority.
> You can do this in an implementation-specifc way via the native_handle():
> http://en.cppreference.com/w/cpp/thread/thread/native_handle

This is C++ threads. I didn't see anything like that for C11 threads.

<sigh> How does this help a user with portable C++ code move an application
RTEMS? I see this requiring users track the C++ instances with some form of
run-time profile and none of that will be portable. They seem to be focused
parallel work loads than real-time threads with specific run-time profiles.

I would recommend unlimited objects as a first measure.

But we have asked users who care to count object instances for years. Just
making it clear they are C11 threads. They shouldn't care how they are


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