Function ppoll
pub unsafe extern "C" fn ppoll(fds: *mut pollfd, nfds: nfds_t, timeout: *const timespec, sigmask: *const sigset_t) -> c_intppollpub unsafe extern "C" fn ppoll(fds: *mut pollfd, nfds: nfds_t, timeout: *const timespec, sigmask: *const sigset_t) -> c_int