setjmp属于C函数库，作用是分别承担非局部标号和goto作用。
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/* setjmp.h Defines typedef and functions for setjmp/longjmp. */ /* * C/C++ Run Time Library - Version 11.0 * * Copyright (c) 1987, 2002 by Borland Software Corporation * All Rights Reserved. * */ /* $Revision: 9.6 $ */ #ifndef __SETJMP_H #define __SETJMP_H #define _INC_SETJMP /* MSC Guard name */ #if !defined(___DEFS_H) #include <_defs.h> #endif #ifdef __cplusplus namespace std { #endif /* __cplusplus */ #ifdef __cplusplus extern "C" { #endif #if !defined(RC_INVOKED) #if defined(__STDC__) #pragma warn -nak #endif #pragma pack(push, 1) #endif /* !RC_INVOKED */ typedef struct __jmp_buf { unsigned j_ebp; unsigned j_ebx; unsigned j_edi; unsigned j_esi; unsigned j_esp; unsigned j_ret; unsigned j_excep; unsigned j_context; } jmp_buf[1]; void _RTLENTRYF _EXPFUNC longjmp(jmp_buf __jmpb, int __retval); int _RTLENTRYF _EXPFUNC setjmp(jmp_buf __jmpb); #ifdef __cplusplus } #endif #if !defined(RC_INVOKED) /* restore default packing */ #pragma pack(pop) #if defined(__STDC__) #pragma warn .nak #endif #endif /* !RC_INVOKED */ #ifdef __cplusplus } // std #endif /* __cplusplus */ #endif /* __SETJMP_H */ #if defined(__cplusplus) && !defined(__USING_CNAME__) && !defined(__SETJMP_H_USING_LIST) #define __SETJMP_H_USING_LIST using std::jmp_buf; using std::longjmp; using std::setjmp; #endif /* __USING_CNAME__ */ |