xnu-6153.121.1.tar.gz

[apple/xnu.git] / bsd / sys / vadvise.h

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#ifndef _SYS_VADVISE_H_
#define _SYS_VADVISE_H_

#include <sys/appleapiopts.h>

#ifdef __APPLE_API_OBSOLETE
/*
 * 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 /* __APPLE_API_OBSOLETE */

#endif  /* !_SYS_VADVISE_H_ */