Using lockfree spsc queue on a single-core processor

[gnss-tao]

Hi,
When using lockfree spsc queue on a single-core processor with RTOS, can we push/pop objects from multiple tasks/IRQs like mpmc queue?
Since on a single-core system, there is only one task/IRQ can be activated in the RTOS context. It seems that pushing/popping from multiple tasks/IRQs does not violate the spsc requirement.
Thanks if someone can clarify this use case.

[mike919192]

I hope this reply is still useful. Even with a single core processor, you still should not share access to one side of the SPSC. The code can be pre-empted at any time and cause thread problems. You would need to use a class that is MPMC or protect the SPSC with a mutex.