Thread#kill

VALUE
rb_thread_kill(VALUE thread)
{
    rb_thread_t *th = rb_thread_ptr(thread);

    if (th->to_kill || th->status == THREAD_KILLED) {
        return thread;
    }
    if (th == th->vm->ractor.main_thread) {
        rb_exit(EXIT_SUCCESS);
    }

    thread_debug("rb_thread_kill: %p (%"PRI_THREAD_ID")\n", (void *)th, thread_id_str(th));

    if (th == GET_THREAD()) {
        /* kill myself immediately */
        rb_threadptr_to_kill(th);
    }
    else {
        threadptr_check_pending_interrupt_queue(th);
        rb_threadptr_pending_interrupt_enque(th, eKillSignal);
        rb_threadptr_interrupt(th);
    }
    return thread;
}