/*
* libhugetlbfs - Easy use of Linux hugepages
* Copyright (C) 2005-2006 David Gibson & Adam Litke, IBM Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <hugetlbfs.h>
#include "hugetests.h"
static void test_simple_mlock(int flags)
{
int fd = hugetlbfs_unlinked_fd();
void *p;
int ret;
long hpage_size = check_hugepagesize();
p = mmap(0, hpage_size, PROT_READ|PROT_WRITE, flags, fd, 0);
if (p == MAP_FAILED)
FAIL("mmap() failed (flags=%x): %s", flags, strerror(errno));
ret = mlock(p, hpage_size);
if (ret)
FAIL("mlock() failed (flags=%x): %s", flags, strerror(errno));
ret = munlock(p, hpage_size);
if (ret)
FAIL("munlock() failed (flags=%x): %s", flags, strerror(errno));
ret = munmap(p, hpage_size);
if (ret)
FAIL("munmap() failed (flags=%x): %s", flags, strerror(errno));
close(fd);
}
int main(int argc, char *argv[])
{
struct rlimit limit_info;
if(getrlimit(RLIMIT_MEMLOCK, &limit_info))
ERROR("Unable to read locked memory rlimit: %s", strerror(errno));
if(limit_info.rlim_cur < check_hugepagesize())
CONFIG("Locked memory ulimit set below huge page size");
test_simple_mlock(MAP_PRIVATE);
test_simple_mlock(MAP_SHARED);
test_simple_mlock(MAP_PRIVATE|MAP_LOCKED);
test_simple_mlock(MAP_SHARED|MAP_LOCKED);
PASS();
}