From be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da Mon Sep 17 00:00:00 2001 From: rgrimes Date: Fri, 27 May 1994 05:00:24 +0000 Subject: BSD 4.4 Lite Lib Sources --- lib/libc/sys/madvise.2 | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 lib/libc/sys/madvise.2 (limited to 'lib/libc/sys/madvise.2') diff --git a/lib/libc/sys/madvise.2 b/lib/libc/sys/madvise.2 new file mode 100644 index 0000000..d0676ab --- /dev/null +++ b/lib/libc/sys/madvise.2 @@ -0,0 +1,66 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)madvise.2 8.1 (Berkeley) 6/9/93 +.\" +.Dd June 9, 1993 +.Dt MADVISE 2 +.Os +.Sh NAME +.Nm madvise +.Nd give advise about use of memory +.Sh SYNOPSIS +.Fn madvise "caddr_t addr" "int len" "int behav" +.Sh DESCRIPTION +The +.Fn madvise +system call +allows a process that has knowledge of its memory behavior +to describe it to the system. +The known behaviors are given in +.Pa : +.Bd -literal +#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 */ +.Ed +.Sh SEE ALSO +.Xr msync 2 , +.Xr munmap 2 , +.Xr mprotect 2 , +.Xr mincore 2 +.Sh HISTORY +The +.Nm madvise +function first appeared in 4.4BSD. -- cgit v1.1