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vadvise.h
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C/C++ Source or Header
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1993-10-19
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44 lines
/*
* Mach Operating System
* Copyright (c) 1989 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* HISTORY
* $Log: vadvise.h,v $
* Revision 2.3 89/03/09 22:10:08 rpd
* More cleanup.
*
* Revision 2.2 89/02/25 17:58:14 gm0w
* Changes for cleanup.
*
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)vadvise.h 7.1 (Berkeley) 6/4/86
*/
#ifndef _SYS_VADVISE_H_
#define _SYS_VADVISE_H_
/*
* Parameters to vadvise() to tell system of particular paging
* behaviour:
* VA_NORM Normal strategy
* VA_ANOM Sampling page behaviour is not a win, don't bother
* Suitable during GCs in LISP, or sequential or random
* page referencing.
* VA_SEQL Sequential behaviour expected.
* VA_FLUSH Invalidate all page table entries.
*/
#define VA_NORM 0
#define VA_ANOM 1
#define VA_SEQL 2
#define VA_FLUSH 3
#endif _SYS_VADVISE_H_