ESP32 Forum

I was wondering whether I could call esp_execute_shared_stack_function from multiple tasks. Looking at the implementation, the function doesn't seem to be thread safe. Mainly because it uses global static variables (e.g. xtensa_shared_stack_callback). Although I have to pass a mutex, this is only used to guard access to the stack memory also provided.

Yeah, that looks like a bug, good catch. I'll file an internal issue.

Thanks for the quick reply!

Please note the open issue on GitHub, which is also affected by the function, but not related to my issue: https://github.com/espressif/esp-idf/issues/10414.

While I'm at it: it would be really nice if I could pass void* arg to esp_execute_shared_stack_function, so that my callback receives the void* arg when called on the external stack.