q_wait - return the next job from the queue, when available

q_wait() atomically fetches the next job in q and sets the job pointer to it. The call blocks until a job
       is available.

       q_trywait()  is  the  same as q_wait() except that if the queue read lock cannot be immediately obtained,
       then the call returns an error (errno set to EAGAIN) instead of blocking.

       The function can also fail with the errors for sem_post(3) or sem_wait(3).

       Librecast library (liblibrecast, -llibrecast)

       q_wait - return the next job from the queue, when available

       The q_push() function returns zero on success. On error, -1 is returned and errno is set to indicate  the
       error.

q_job_seek(3),   q_pool_create(3),   q_pool_destroy(3),  q_init(3),  q_free(3),  q_push(3),  sem_post(3),
       sem_wait(3)

LIBRECAST                                          2023-07-25                                          Q_WAIT(3)

#include<librecast/q.h>intq_wait(q_t*q,q_job_t*job);intq_trywait(q_t*q,q_job_t*job);

       Compile and link with -llibrecast.