This is the mail archive of the
mailing list for the Cygwin project.
Adding madvise function in cygwin with a #define
- From: jdzstz - gmail dot com <jdzstz at gmail dot com>
- To: cygwin at cygwin dot com
- Date: Tue, 11 Jan 2011 12:13:18 +0100
- Subject: Adding madvise function in cygwin with a #define
Testing a linux application that uses "madvise", varnish cache, I have
realized that in cygwin doesnot exists this function but exists the
Adding inside configure.ac script:
+ AC_DEFINE([madvise], [posix_madvise], [In CYGWIN, madvise function
is not defined, instead we use posix_madvise])
+ AC_DEFINE([MADV_RANDOM], [POSIX_MADV_RANDOM], [In CYGWIN,
MADV_RANDOM define is not defined, instead we use POSIX_MADV_RANDOM])
allows compiling successfuly the aplication, without any other source changes.
I think it could be interesting adding this defines to cygwin headers,
at the end of <sys/mman.h> file
#define madvise posix_madvise
#define MADV_NORMAL POSIX_MADV_NORMAL
#define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL
#define MADV_RANDOM POSIX_MADV_RANDOM
#define MADV_WILLNEED POSIX_MADV_WILLNEED
#define MADV_DONTNEED POSIX_MADV_DONTNEED
This allows us to make less changes when compiling linux applications.
I have seen that correct POSIX function is "posix_madvise" and
"madvise" is defined in some systems: Linux and FreeBSD but seems
people in this systems prefer use it instead posix_* alternative.
Problem reports: http://cygwin.com/problems.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple