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DOS/V Power Report 1998 November
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CWSDPMI2
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DALLOC.H
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1996-06-15
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/* Copyright (C) 1995,1996 CW Sandmann (sandmann@clio.rice.edu) 1206 Braelinn, Sugarland, TX 77479
** Copyright (C) 1993 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
**
** This file is distributed under the terms listed in the document
** "copying.cws", available from CW Sandmann at the address above.
** A copy of "copying.cws" 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.cws".
**
** This file is distributed WITHOUT ANY WARRANTY; without even the implied
** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#define MAX_DARRAY 4096 /* 4096 * 8 -> 128 Mb */
#if MAX_DARRAY > 8192
typedef unsigned long da_pn; /* Must be unsigned long for > 256Mb virtual */
#else
typedef unsigned short da_pn;
#endif
#define MAX_DBLOCK ((da_pn)(MAX_DARRAY-1) << 3)
void dalloc_file(char *swapname);
void dalloc_init(void);
void dalloc_uninit(void);
da_pn dalloc(void);
void dfree(da_pn);
/* These return pages */
da_pn dalloc_max_size(void);
da_pn dalloc_used(void);
void dwrite(word8 *buf, da_pn block);
void dread(word8 *buf, da_pn block);