forked from epagris/FreeRTOS-Kernel
34b8e24d7c
Previously, newlib's _impure_ptr was updated on every context switch to point to the current task's _reent structure. However, this behavior is no longer valid on multi-core systems due to the fact that multiple cores can switch contexts at the same time, thus leading to the corruption of the _impure_ptr. However, Newlib can be compiled with __DYNAMIC_REENT__ enabled which will cause newlib functions to call __getreent() instead in order to obtain the required reent struct. This commit adds dynamic reentrancy support to FreeRTOS: - Added a configNEWLIB_REENTRANT_IS_DYNAMIC to enable dynamic reentrancy support - _impure_ptr is no longer updated with reentrancy is dynamic - Port must provide their own __getreent() that returns the current task's reent struct