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SPAWNO.H
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C/C++ Source or Header
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1990-11-03
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3KB
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79 lines
/********************************************************************/
/* SPAWNO v3.0 EMS/XMS/disk swapping replacement for spawn...() */
/* (c) Copyright 1990 Ralf Brown All Rights Reserved */
/* */
/* May be freely copied provided that this copyright notice is */
/* not altered or removed. */
/********************************************************************/
#ifndef __SPAWNO
#define __SPAWNO
#include <stdarg.h>
#ifdef M_I86 /* MSC 5.x */
# define _Cdecl cdecl
#endif /* M_I86 */
int _Cdecl spawnvo(const char *overlay_path, const char *name, va_list args) ;
int _Cdecl spawnvpo(const char *overlay_path, const char *name, va_list args) ;
int _Cdecl spawnveo(const char *overlay_path, const char *name, va_list args,const char **env) ;
int _Cdecl spawnvpeo(const char *overlay_path, const char *name, va_list args,const char **env) ;
int _Cdecl spawnlo(const char *overlay_path, const char *name, ...) ;
int _Cdecl spawnlpo(const char *overlay_path, const char *name, ...) ;
int _Cdecl spawnleo(const char *overlay_path, const char *name, ...) ;
int _Cdecl spawnlpeo(const char *overlay_path, const char *name, ...) ;
/* this function is normally called only by the spawn...o() functions */
int pascal __spawnv(const char *overlay_path,const char *name,va_list args,int env) ;
/* The following variable determines whether SPAWNO is allowed to use XMS */
/* memory if available. Set to 0 to disable XMS, 1 (default) to enable */
extern char _Cdecl __spawn_xms ;
/* The next variable determines whether SPAWNO is allowed to use EMS */
/* memory if available and XMS is either unavailable or disabled. Set to */
/* 0 to disable EMS, 1 (default) to enable. */
extern char _Cdecl __spawn_ems ;
/* The last variable specifies the number of paragraphs to keep resident */
/* while swapped out (default 0 means minimum possible) */
extern unsigned int _Cdecl __spawn_resident ;
/********************************************************************/
/* You may define REPLACE_SPAWN before including this header file */
/* in order to allow existing code to call the new functions. You */
/* should also define OVERLAY_PATH to a string literal or char* */
/* expression indicating where to store the swap file. */
#ifdef REPLACE_SPAWN
#ifdef P_WAIT
# undef P_WAIT
#endif
#ifdef P_OVERLAY
# undef P_OVERLAY
#endif
#ifndef OVERLAY_PATH
/* use the root directory of the current drive if no path defined */
# define OVERLAY_PATH "/"
#endif
#define spawnl spawnlo
#define spawnlp spawnlpo
#define spawnle spawnleo
#define spawnlpe spawnlpeo
#define spawnv spawnvo
#define spawnvp spawnvpo
#define spawnve spawnveo
#define spawnvpe spawnvpeo
#define P_WAIT OVERLAY_PATH
#define P_OVERLAY OVERLAY_PATH
/* Note: as redefined here, P_OVERLAY has different semantics than the normal */
/* library function, which never returns on success */
#endif /* REPLACE_SPAWN */
#endif /* __SPAWNO */