- On v11.1 SMP, pvPortMalloc() should not be called in critical secion.
vTaskSuspenAll() would trigger assert if in criticalsection.
- The pthread_cond APIs are not ISR safe. Use vTaskSuspendAll() to prevent
race condition is enough.
Signed-off-by: wangfei_chen <wangfei_chen@realsil.com.cn>
Co-authored-by: wangfei_chen <wangfei_chen@realsil.com.cn>
Update the pthread_cond_t implementation to utilize Task Notifications.
In the existing implementation, if multiple threads of different
priority are blocked on the same condition, a higher priority thread, in
most cases, will unblock multiple times due to taking the underlying
semaphore multiple times instead of just once. Switching to Task
notifications guarantees that all tasks are equally notified and
unblocked.
pthread_cond_signal has also been updated to conform to the POSIX
specification in that it will unblock the highest priority task waiting
on the condition.
Resolves#8
