Can the `configUSE_NEWLIB_REENTRANT` be applicable to FreeRTOS?

Kernel
1

Not very familiar with the newlib reentrant feature, I’d like to ask whether it can be used on an SMP system.
Thanks

2

The current implementation may not be compatible with SMP systems. I believe that in an SMP environment, each core would require its own _impure_ptr, which would need to be updated during context switches. The existing implementation assumes a single global _impure_ptr, an assumption that probably won’t hold in a multi-core setup. We need to verify these concerns with the newlib maintainers and confirm whether newlib supports multi-core environments at all.

1 Like
3

Thanks for your confirm!