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Diffstat (limited to 'lib/libc/sys/madvise.2')
| -rw-r--r-- | lib/libc/sys/madvise.2 | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/lib/libc/sys/madvise.2 b/lib/libc/sys/madvise.2 new file mode 100644 index 000000000000..3566a35c0cb7 --- /dev/null +++ b/lib/libc/sys/madvise.2 @@ -0,0 +1,60 @@ +.\" Copyright (c) 1991 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 6.1 (Berkeley) 5/27/91 +.\" +.TH MADVISE 2 "May 27, 1991" +.UC 7 +.SH NAME +madvise \- give advise about use of memory +.SH SYNOPSIS +.nf +madvise(addr, len, behav) +.B caddr_t addr; +.B int len, behav; +.fi +.SH DESCRIPTION +.PP +The \fImadvise\fP system call +allows a process that has knowledge of its memory behavior +to describe it to the system. +The known behaviors are given in \fI<sys/mman.h>\fP: +.DS +.ta \w'#define\ \ 'u +\w'MADV_SEQUENTIAL\ \ 'u +\w'00\ \ \ \ 'u +#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 */ +.DE +.SH "SEE ALSO" +msync.2, munmap.2, mprotect.2, madvise.2, mincore.2 |