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/* $Id: mmap.c 7598 2007-02-09 02:40:51Z eagle $
**
** MMap manipulation routines
**
** Written by Alex Kiernan (alex.kiernan@thus.net)
**
** These routines work with mmap()ed memory
*/
#include "config.h"
#include "clibrary.h"
#include "portable/mmap.h"
#include "inn/messages.h"
#include "inn/mmap.h"
/*
** Figure out what page an address is in and flush those pages
*/
void
inn__mapcntl(void *p, size_t length, int flags)
{
int pagesize;
pagesize = getpagesize();
if (pagesize == -1)
syswarn("getpagesize failed");
else {
char *start, *end;
start = (char *)((size_t)p & ~(size_t)(pagesize - 1));
end = (char *)((size_t)((char *)p + length + pagesize) &
~(size_t)(pagesize - 1));
msync(start, end - start, flags);
}
}
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