/*
* Copyright 2016-2017, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of the copyright holder 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*/
/*
* win_mmap_fixed.c -- test memory mapping with MAP_FIXED for various lengths
*
* This test is intended to be used for testing Windows implementation
* of memory mapping routines - mmap(), munmap(), msync() and mprotect().
* Those functions should provide the same functionality as their Linux
* counterparts, at least with respect to the features that are used
* in PMDK libraries.
*
* Known issues and differences between Linux and Windows implementation
* are described in src/common/mmap_windows.c.
*/
#include "unittest.h"
#include <sys/mman.h>
#define ALIGN(size) ((size) & ~(Ut_mmap_align - 1))
/*
* test_mmap_fixed -- test fixed mappings
*/
static void
test_mmap_fixed(const char *name1, const char *name2, size_t len1, size_t len2)
{
size_t len1_aligned = ALIGN(len1);
size_t len2_aligned = ALIGN(len2);
UT_OUT("len: %zu (%zu) + %zu (%zu) = %zu", len1, len1_aligned,
len2, len2_aligned, len1_aligned + len2_aligned);
int fd1 = OPEN(name1, O_CREAT|O_RDWR, S_IWUSR|S_IRUSR);
int fd2 = OPEN(name2, O_CREAT|O_RDWR, S_IWUSR|S_IRUSR);
POSIX_FALLOCATE(fd1, 0, len1);
POSIX_FALLOCATE(fd2, 0, len2);
char *ptr1 = mmap(NULL, len1_aligned + len2_aligned,
PROT_READ|PROT_WRITE, MAP_SHARED, fd1, 0);
UT_ASSERTne(ptr1, MAP_FAILED);
UT_OUT("ptr1: %p, ptr2: %p", ptr1, ptr1 + len1_aligned);
char *ptr2 = mmap(ptr1 + len1_aligned, len2_aligned,
PROT_READ|PROT_WRITE, MAP_FIXED|MAP_SHARED, fd2, 0);
UT_ASSERTne(ptr2, MAP_FAILED);
UT_ASSERTeq(ptr2, ptr1 + len1_aligned);
UT_ASSERTne(munmap(ptr1, len1_aligned), -1);
UT_ASSERTne(munmap(ptr2, len2_aligned), -1);
CLOSE(fd1);
CLOSE(fd2);
UNLINK(name1);
UNLINK(name2);
}
int
main(int argc, char *argv[])
{
START(argc, argv, "win_mmap_fixed");
if (argc < 4)
UT_FATAL("usage: %s dirname len1 len2 ...", argv[0]);
size_t *lengths = MALLOC(sizeof(size_t) * argc - 2);
UT_ASSERTne(lengths, NULL);
size_t appendix_length = 20; /* a file name length */
char *name1 = MALLOC(strlen(argv[1]) + appendix_length);
char *name2 = MALLOC(strlen(argv[1]) + appendix_length);
sprintf(name1, "%s\\testfile1", argv[1]);
sprintf(name2, "%s\\testfile2", argv[1]);
for (int i = 0; i < argc - 2; i++)
lengths[i] = atoll(argv[i + 2]);
for (int i = 0; i < argc - 2; i++)
for (int j = 0; j < argc - 2; j++)
test_mmap_fixed(name1, name2, lengths[i], lengths[j]);
FREE(name1);
FREE(name2);
FREE(lengths);
DONE(NULL);
}