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valloc.h
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C/C++ Source or Header
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1993-08-07
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1KB
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44 lines
/* This is file VALLOC.H */
/*
** Copyright (C) 1993 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
**
** This file is distributed under the terms listed in the document
** "copying.dj", available from DJ Delorie at the address above.
** A copy of "copying.dj" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.dj".
**
** This file is distributed WITHOUT ANY WARRANTY; without even the implied
** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef _VALLOC_H_
#define _VALLOC_H_
#define VA_640 0 /* always deal with logical page numbers 0..255 */
#define VA_1M 1 /* always deal with physical page numbers */
/*
** These functions deal with page *numbers*
** pn << 8 = segment number
** pn << 12 = physical address
** pn << 24 = seg:ofs
*/
void valloc_init(void);
void valloc_uninit(void);
unsigned valloc(int where);
void vfree(void);
void vcpi_flush(void);
void valloc_shrink_rmem(int pages);
/* These return *pages* not bytes, and don't get called in DPMI mode */
unsigned valloc_max_size(void);
unsigned valloc_used(void);
extern int use_xms;
#endif