目录从示例开始接收信号常见信号处理多个信号NotifyContext示例总结golang不是像C语言的系统级编程语言，但仍提供了以下特性帮助开发者与底层操作系统进行交互，如信号（singals),os/singals包实现了这些功能。相对于
On an SMP machine we must usespin_lock_irqsave and not spin_lock_irq from interrupt context. Why would we want to save the flags (which contain the IF)?
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