Calls epoll_create1() and memorises the returned file descriptor, which is -1 in case of an error.
epoll_create1() flags
the obtained file descriptor on success or, -1 on error. On error errno is set appropriately and the returned -1 is memorised as file descriptor.
See Implementation
Calls epoll_create1() and memorises the returned file descriptor, which is -1 in case of an error.