Function thread_atexit

src/butil/thread_local.cpp:124–135

}  // namespace detail

int thread_atexit(void (*fn)(void*), void* arg) {
    if (NULL == fn) {
        errno = EINVAL;
        return -1;
    }
    detail::ThreadExitHelper* h = detail::get_or_new_thread_exit_helper();
    if (h) {
        return h->add(fn, arg);
    }
    errno = ENOMEM;
    return -1;
}

int thread_atexit(void (*fn)()) {
    if (NULL == fn) {