Dos6.0
源代码在线查看： signal.h
/***
*signal.h - defines signal values and routines
*
* Copyright (c) 1985-1990, Microsoft Corporation. All rights reserved.
*
*Purpose:
* This file defines the signal values and declares the signal functions.
* [ANSI/System V]
*
****/
#if defined(_DLL) && !defined(_MT)
#error Cannot define _DLL without _MT
#endif
#ifdef _MT
#define _FAR_ _far
#else
#define _FAR_
#endif
#ifdef _DLL
#define _LOADDS_ _loadds
#else
#define _LOADDS_
#endif
#ifndef _SIG_ATOMIC_T_DEFINED
typedef int sig_atomic_t;
#define _SIG_ATOMIC_T_DEFINED
#endif
#define NSIG 23 /* maximum signal number + 1 */
/* signal types */
/* SIGINT, SIGFPE, SIGILL, SIGSEGV, and SIGABRT are recognized on DOS 3.x */
#define SIGINT 2 /* interrupt - corresponds to DOS 3.x int 23H */
#define SIGILL 4 /* illegal instruction - invalid function image */
#define SIGFPE 8 /* floating point exception */
#define SIGSEGV 11 /* segment violation */
#define SIGTERM 15 /* Software termination signal from kill */
#define SIGUSR1 16 /* User defined signal 1 */
#define SIGUSR2 17 /* User defined signal 2 */
#define SIGUSR3 20 /* User defined signal 3 */
#define SIGBREAK 21 /* Ctrl-Break sequence */
#define SIGABRT 22 /* abnormal termination triggered by abort call */
/* signal action codes */
/* SIG_DFL and SIG_IGN are recognized on DOS 3.x */
#define SIG_DFL (void (_FAR_ _cdecl _LOADDS_ *)())0 /* default signal action */
#define SIG_IGN (void (_FAR_ _cdecl _LOADDS_ *)())1 /* ignore */
#define SIG_SGE (void (_FAR_ _cdecl _LOADDS_ *)())3 /* signal gets error */
#define SIG_ACK (void (_FAR_ _cdecl _LOADDS_ *)())4 /* error if handler not setup */
/* signal error value (returned by signal call on error) */
#define SIG_ERR (void (_FAR_ _cdecl _LOADDS_ *)())-1 /* signal error value */
/* function prototypes */
void (_FAR_ _cdecl _LOADDS_ * _FAR_ _cdecl signal(int,
void (_FAR_ _cdecl _LOADDS_ *)()))();
#ifndef _MT
int _FAR_ _cdecl raise(int);
#endif
