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RocketLink!--> Man page versions: OpenBSD FreeBSD NetBSD Others

MADVISE(2)                OpenBSD Programmer's Manual               MADVISE(2)

     madvise - give advice about use of memory

     #include <sys/types.h>
     #include <sys/mman.h>

     madvise(void *addr, size_t len, int behav);

     The madvise() system call allows a process that has knowledge of its mem-
     ory behavior to describe it to the system.  The known behaviors are given
     in <sys/mman.h>:

     #define MADV_NORMAL     0       /* no further special treatment */
     #define MADV_RANDOM     1       /* expect random page references */
     #define MADV_SEQUENTIAL 2       /* expect sequential references */
     #define MADV_WILLNEED   3       /* will need these pages */
     #define MADV_DONTNEED   4       /* don't need these pages */
     #define MADV_SPACEAVAIL 5       /* insure that resources are reserved */

     Upon successful completion, a value of 0 is returned.  Otherwise, a value
     of -1 is returned and errno is set to indicate the error.

     mincore(2),  minherit(2),  mprotect(2),  msync(2),  munmap(2)

     The madvise() function is not implemented in the current vm subsystem.

     The madvise function first appeared in 4.4BSD.

OpenBSD 2.6                      June 9, 1993                                1

Source: OpenBSD 2.6 man pages. Copyright: Portions are copyrighted by BERKELEY
SOFTWARE DESIGN, INC., The Regents of the University of California, Massachusetts
Institute of Technology, Free Software Foundation, FreeBSD Inc., and others.

(Corrections, notes, and links courtesy of RocketAware.com)

[Detailed Topics]

[Overview Topics]

Up to: Memory blocks (Sometimes called "Byte Strings") - Memory blocks. Allocated, shared, mmaped, kernel et al

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