process.h

利用POS机具硬件改为条纹码扫描器的编程代码

/*  process.h

    Symbols and structures for process management.

    Copyright (c) Borland International 1987,1988,1990,1991
    All Rights Reserved.
*/

#if !defined( __PROCESS_H )
#define __PROCESS_H

#ifdef __DLL__
#define _FAR far
#else
#define _FAR
#endif

#if __STDC__
#define _Cdecl
#else
#define _Cdecl  cdecl
#endif

#ifndef __PAS__
#define _CType _Cdecl
#else
#define _CType pascal
#endif

/*  Modes available as first argument to the spawnxx functions. */

#define P_WAIT    0 /* child runs separately, parent waits until exit */
#define P_NOWAIT  1 /* both concurrent -- not implemented */
#define P_OVERLAY 2 /* child replaces parent, parent no longer exists */

#define P_NOWAITO 3 /* ASYNCH,       toss RC    */
#define P_DETACH  4 /* DETACHED,     toss RC    */

#define WAIT_CHILD       0
#define WAIT_GRANDCHILD      1

/*  MSDOS does not have any abstract identifier for a process, but the
    process Program Segment Prefix location provides a similar token.
*/

#ifndef _psp
extern  unsigned _Cdecl _psp;    /* provided unconditionally in dos.h */
#endif

#define  getpid()   (_psp)

#ifdef __cplusplus
extern "C" {
#endif
void    _Cdecl abort(void);
int _Cdecl execl(char _FAR *__path, char _FAR *__arg0, ...);
int _Cdecl execle(char _FAR *__path, char _FAR *__arg0, ...);
int _Cdecl execlp(char _FAR *__path, char _FAR *__arg0, ...);
int _Cdecl execlpe(char _FAR *__path, char _FAR *__arg0, ...);
int _Cdecl execv(char _FAR *__path, char _FAR *__argv[]);
int _Cdecl execve(char _FAR *__path, char _FAR *__argv[], char _FAR *_FAR *__env);
int _Cdecl execvp(char _FAR *__path, char _FAR *__argv[]);
int _Cdecl execvpe(char _FAR *__path, char _FAR *__argv[], char _FAR *_FAR *__env);
void    _Cdecl exit(int __status);
void    _Cdecl _exit(int __status);
int _Cdecl spawnl(int __mode, char _FAR *__path, char _FAR *__arg0, ...);
int _Cdecl spawnle(int __mode, char _FAR *__path, char _FAR *__arg0, ...);
int _Cdecl spawnlp(int __mode, char _FAR *__path, char _FAR *__arg0, ...);
int _Cdecl spawnlpe(int __mode, char _FAR *__path, char _FAR *__arg0, ...);
int _Cdecl spawnv(int __mode, char _FAR *__path, char _FAR *__argv[]);
int _Cdecl spawnve(int __mode, char _FAR *__path, char _FAR *__argv[], char _FAR *_FAR *__env);
int _Cdecl spawnvp(int __mode, char _FAR *__path, char _FAR *__argv[]);
int _Cdecl spawnvpe(int __mode, char _FAR *__path, char _FAR *__argv[], char _FAR *_FAR *__env);
int _Cdecl system(const char _FAR *__command);
#ifdef __cplusplus
}
#endif

#endif  /* __PROCESS_H */