程序中的信号处理程序捕获到函数的执行被某个信号中断，信号处理程序然后按正常方式返回。

EINTR — the function was interrupted by a signal, which was caught by a signal handler in the program, and the signal handler returned normally.

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程序中的信号处理程序捕获到函数的执行被某个信号中断，信号处理程序然后按正常方式返回。

EINTR — the function was interrupted by a signal, which was caught by a signal handler in the program, and the signal handler returned normally.

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