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Setjmp.h

setjmp.hC标准函数库中提供“非本地跳转”的头文件控制流偏离了通常的子程序调用与返回序列。互补的两个函数setjmp与longjmp提供了这种功能。

setjmp/longjmp的典型用途是异常处理机制的实现:利用longjmp恢复程序或线程的状态,甚至可以跳过栈中多层的函数调用。


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