Event manager thread safe?

[FZe]

I'm starting a new project and are looking for a way to sync data and events between threads.

I have found the event manager and Zephyr FIFO, Queues etc.

I can't see any information about thread safety, and since they pass pointers I get a bit confused and wonder how it is handled?

Can events in the event manager be large?

For instance if I have a communications thread, can it pass an entire packet(say 128 bytes)  to another thread? or will this cause problems?

I run nrf9160 & SDK 1.7.0

Regards

[Susheel Nuguru]

The event manager have its own spinlock so all handling of events (submitting to queues and later processing them) are done using this spinlock. Your application should just make sure that the memory pointers are still pointing to the valid memory and the rest should be handled in the thread safe way.

[FZe]

How do I ensure this if I send an event from a thread?

Do I need to check if the event have been handled somehow before sending a new one?

[Susheel Nuguru]

OK, looking into the code a bit more deeper, the easiest way the event manager ensures that the pointers are valid and offers thread safe mechanism by forcing the application to create a new event using new_event_type_name just before you configure the event and submit it.