TaiJuWu opened a new pull request, #10605: URL: https://github.com/apache/nuttx/pull/10605
## Summary Hello. I try to implement fair spinlock and hope I can get some suggestions from community But I only test on FIFO scheduler and I am not sure my implementation is correct or not. I have two questions: Is the call flow of fair_spin_lock too long to effect the performance of RTOS? My implement didn't consider interrupts so I need to use critical_section? ## Impact None ## Testing I try to test by this [file.](https://github.com/TaiJuWu/nuttx-apps/blob/fair_spinlock_test/examples/hello/hello_main.c) The result like this ``` Thread 6 is exiting lock 4 time. Thread 7 is enter lock 4 time. Thread 7 is exiting lock 4 time. Thread 6 is enter lock 5 time. Thread 6 is exiting lock 5 time. Thread 7 is enter lock 5 time. Thread 7 is exiting lock 5 time. Thread 8 is enter lock 1 time. Thread 8 is exiting lock 1 time. Thread 9 is enter lock 1 time. Thread 9 is exiting lock 1 time. Thread 8 is enter lock 2 time. Thread 8 is exiting lock 2 time. Thread 9 is enter lock 2 time. Thread 9 is exiting lock 2 time. Thread 8 is enter lock 3 time. Thread 8 is exiting lock 3 time. Thread 9 is enter lock 3 time. Thread 9 is exiting lock 3 time. Thread 8 is enter lock 4 time. Thread 8 is exiting lock 4 time. ``` But I only test on RR scheduler and I am not sure my implementation is correct or not. And I did't consider preemptive for this version. If anyone have any suggestions, i would be very grateful. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
