c++ - 中断 sleep() 函数

Question

如何使用信号处理程序中断 sleep()？

Answer 1

来自 sleep() 函数手册页:

The sleep() function suspends execution of the calling thread until either seconds seconds have elapsed or a signal is delivered to the thread and its action is to invoke a signal-catching function or to terminate the thread or process. System activity may lengthen the sleep by an indeterminate amount.

因此，如果向应用程序发送了一个信号，它的执行将从 sleep 调用后的指令恢复。