WhyCan Forum(哇酷开发者社区)

rtthread_startup() => rt_hw_local_irq_disable() 关闭了全局中断
rt_system_scheduler_start() => rt_hw_context_switch_to() => CPSIE I 开启了全局中断

上述开关中断流程，我觉得没有问题。。

但是在二者之间，有如下的调用流程

rt_hw_board_init()
    => rt_system_heap_init()
        => rt_memheap_init()
            => rt_object_init()
                => rt_spin_unlock_irqrestore
                    => rt_hw_interrupt_enable

又把全局中断打开了，，既然中间会打开全局中断，，那一开始的关闭全局中断又有什么意义呢？？