1.获取sel名称

    const char *sel_name = sel_getName(@selector(run));
    NSLog(@"sel_name:%s",sel_name);

2.获取sel

    SEL sel_register_run = sel_registerName("run");
    NSLog(@"sel_register_run:%@",NSStringFromSelector(sel_register_run));

3.判断两个sel是否是同一个sel

    BOOL is_equal = sel_isEqual(@selector(run), sel_registerName("run"));
    NSLog(@"is_equal:%d",is_equal);