不过，如果程序不使用gethostbyname或者任何其他在同一对象中返回信息的函数，或者如果它每次使用时都会阻塞信号，那么就是安全的。
However, if the program does not use gethostbyname or any other function that returns information in the same object, or if it always blocks signals around each use, you're safe.
不过，如果程序不使用gethostbyname或者任何其他在同一对象中返回信息的函数，或者如果它每次使用时都会阻塞信号，那么就是安全的。
However, if the program does not use gethostbyname or any other function that returns information in the same object, or if it always blocks signals around each use, you're safe.
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