jlaitine commented on code in PR #16030: URL: https://github.com/apache/nuttx/pull/16030#discussion_r2014952840
########## libs/libc/semaphore/sem_wait.c: ########## @@ -98,3 +98,43 @@ int sem_wait(FAR sem_t *sem) leave_cancellation_point(); return ERROR; } + +/**************************************************************************** + * Name: nxsem_wait + * + * Description: + * This function attempts to lock the semaphore referenced by 'sem'. If + * the semaphore value is (<=) zero, then the calling task will not return + * until it successfully acquires the lock. + * + * This is an internal OS interface. It is functionally equivalent to + * sem_wait except that: + * + * - It is not a cancellation point, and + * - It does not modify the errno value. + * + * Input Parameters: + * sem - Semaphore descriptor. + * + * Returned Value: + * This is an internal OS interface and should not be used by applications. + * It follows the NuttX internal error return policy: Zero (OK) is + * returned on success. A negated errno value is returned on failure. + * Possible returned errors: + * + * - EINVAL: Invalid attempt to get the semaphore + * - EINTR: The wait was interrupted by the receipt of a signal. + * + ****************************************************************************/ + +#if !defined(CONFIG_BUILD_FLAT) && !defined(__KERNEL__) +int nxsem_wait(FAR sem_t *sem) Review Comment: Yes, nxsem_xxx and sem_xxx are in the same file in libc: The sem_wait and nxsem_wait are in the same c-file: libs/libc/semaphore/sem_wait.c The nxsem_wait is in here for the kernel: sched/semaphore/sem_wait.c To avoid duplicating the actual code, the "core" of the function is put as a static inline function nxsem_wait_impl in sem_fast.h, and is used from there in both of the above files. I don't understand what you want, sorry. The structure is exactly as you request above. -- 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
