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SPAWNO.H
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C/C++ Source or Header
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1991-11-17
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5KB
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98 lines
/********************************************************************/
/* SPAWNO v4.0 EMS/XMS/disk swapping replacement for spawn...() */
/* (c) Copyright 1990, 1991 Ralf Brown All Rights Reserved */
/* */
/* May be freely copied provided that this copyright notice is */
/* not altered or removed. */
/********************************************************************/
#ifndef __SPAWNO_H
#define __SPAWNO_H
#include <stdarg.h>
#ifdef M_I86 /* MSC 5.x */
# ifndef _Cdecl
# define _Cdecl cdecl
# endif
#endif /* M_I86 */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
void _Cdecl init_SPAWNO(const char *overlay_path, int swap_types) ;
int _Cdecl spawnvo(const char *overlay_path, const char *name, const char **args) ;
int _Cdecl spawnvpo(const char *overlay_path, const char *name, const char **args) ;
int _Cdecl spawnveo(const char *overlay_path, const char *name, const char **args,const char **env) ;
int _Cdecl spawnvpeo(const char *overlay_path, const char *name, const char **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, ...) ;
int _Cdecl systemo(const char *overlay_path, const char *command) ;
/* This function is normally called only by the spawn..() and spawn..o() */
/* functions */
int pascal __spawnv(const char *overlay_path,const char *name,const char **args,unsigned int env) ;
#ifdef __cplusplus
}
#endif /* __cplusplus */
/* This variable is used by the functions which override the standard */
/* spawn..() functions; you should set it at the beginning of main(). */
/* It points at a string containing a list of directories to be used when */
/* swapping to disk, separated by semicolons. If you use multiple */
/* directories, they should be on different drives since for directories */
/* other than the root, inability to swap to one directory implies */
/* inability to swap to all others on the same drive. */
extern const char *pascal ___spawn_swap_dirs ;
/* 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 next variable determines whether SPAWNO is allowed to use non-XMS */
/* extended memory if available. Set to 0 to disable extended memory, */
/* 1 (default) to enable. */
extern char _Cdecl __spawn_ext ;
/* Specify whether to swap the program's memory blocks in the upper */
/* memory area under MSDOS 5.0 (requires DOS=UMB in CONFIG.SYS) */
extern char _Cdecl __spawn_swap_UMA ;
/* Specify whether INT 23h and INT 24h handlers should be deactivated by */
/* SPAWNO. You will normally want to deactivate the handlers unless you */
/* have elected to keep part of your program in memory while swapped. */
/* Set to 1 to preserve the INT 23h and INT 24h handlers, 0 (default) to */
/* disable the handlers. */
extern char _Cdecl __spawn_keepints ;
/* This variable specifies the number of paragraphs to keep resident */
/* while swapped out (default 0 means minimum possible) */
extern unsigned int _Cdecl __spawn_resident ;
/* The last variable specifies how many paragraphs of the stack to keep */
/* in memory while swapped out (default = 3, minimum = 2) */
/* Note: the minimum value of 2 will only work on bare DOS; the more */
/* TSRs that hook INT 21h and chain with a simulated interrupt rather */
/* than a far jump, the more paragraphs of stack must remain resident-- */
/* roughly one extra paragraph for every two such TSRs. */
extern unsigned int _Cdecl __spawn_res_stack ;
/* Manifest constants for calling init_SPAWNO() */
#define SWAP_DISK 0
#define SWAP_XMS 1
#define SWAP_EMS 2
#define SWAP_EXT 4
#define SWAP_ANY 0xFF
#endif /* __SPAWNO_H */
/*=- End of SPAWNO.H -=*/