Do not switch threads while the scheduler is locked

Question

Do not switch threads while the scheduler is locked

Closed this issue 6 years ago · 2 comments

In certain conditions, locking the scheduler is not immediate, there still may be one or more context switches.

Answer 1 · 2018-10-25T08:00:27.000Z

Locking the scheduler needs to immediately block the thread switching logic, and not rely on the port implementation of reschedule(), since on platforms like Cortex-M not generating the PendSV interrupt is not enough, the ready list may be long and the threads in the list still get scheduled.

Answer 2 · 2018-11-19T11:36:05.000Z

Fixed in v6.3.15.