lumiera_/tests/backend/test-filemmap.c
Ichthyostega 24b3bec4be Doxygen: prepare all unit tests for inclusion in the documentation
Doxygen will only process files with a @file documentation comment.
Up to now, none of our test code has such a comment, preventing the
cross-links to unit tests from working.

This is unfortunate, since unit tests, and even the code comments there,
can be considered as the most useful form of technical documentation.
Thus I'll start an initiative to fill in those missing comments automatically
2017-02-22 01:54:20 +01:00

381 lines
8.8 KiB
C

/*
TEST-FILEMAP - test file management
Copyright (C) Lumiera.org
2008, Christian Thaeter <ct@pipapo.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* *****************************************************/
/** @file §§§
** unit test §§TODO§§
*/
//#include <stdio.h>
//#include <string.h>
#include "lib/llist.h"
#include "common/config.h"
#include "backend/backend.h"
#include "backend/file.h"
#include "backend/filedescriptor.h"
#include "backend/mmapings.h"
#include "backend/mmap.h"
#include "lib/test/test.h"
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/mman.h>
TESTS_BEGIN
/*
The first two are not really tests, but some code to check for
filesystem and kernel semantics which might be moved elsewhere someday
*/
TEST (mmap_semantic)
{
int fd = open (",mmaptest", O_RDWR|O_CREAT, 0666);
printf ("got fd %d\n", fd);
printf ("error %s\n", strerror (errno));
int dummy = ftruncate (fd, 8192);
(void)dummy;
TODO ("handle error case better");
void* addr = mmap (NULL,
8192,
PROT_WRITE,
MAP_SHARED,
fd,
0);
printf ("mapped at %p\n", addr);
printf ("error %s\n", strerror (errno));
int i = 0;
while (++i && ! errno)
{
addr = mmap (NULL,
4096,
PROT_READ|PROT_WRITE,
MAP_SHARED,
fd,
0);
printf ("mapped %d again %p\n", i, addr);
printf ("error %s\n", strerror (errno));
}
}
TEST (fd_semantic)
{
mkdir (",testdir", 0777); errno = 0;
int i = 0;
while (++i && ! errno)
{
char name[256];
sprintf (name, ",testdir/file_%d", i);
int fd = open (name, O_RDWR|O_CREAT, 0666);
printf ("#%d opened %d\n", i, fd);
printf ("error %s\n", strerror (errno));
void* addr = mmap (NULL,
8192,
PROT_WRITE,
MAP_SHARED,
fd,
0);
printf ("mapped at %p\n", addr);
close (fd);
}
}
TEST (mmap_missing_chunksize)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_CREATE);
LumieraMMapings mmaps = lumiera_file_mmapings (file);
if (!mmaps)
fprintf (stderr, "%s\n", lumiera_error());
lumiera_file_delete (file);
lumiera_backend_destroy ();
lumiera_config_destroy ();
}
TEST (mmap_forget_releasing)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_CREATE);
lumiera_file_set_chunksize_bias (file, 4096, 0);
LumieraMMapings mmaps = lumiera_file_mmapings (file);
LumieraMMap map = lumiera_mmapings_mmap_acquire (mmaps, file, 0, 100);
(void) map; //lumiera_mmapings_release_mmap (mmaps, &user, mmap);
lumiera_file_delete (file);
lumiera_backend_destroy ();
lumiera_config_destroy ();
}
TEST (mmap_simple)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_CREATE);
lumiera_file_set_chunksize_bias (file, 4096, 0);
LumieraMMapings mmaps = lumiera_file_mmapings (file);
LumieraMMap map = lumiera_mmapings_mmap_acquire (mmaps, file, 0, 100);
lumiera_mmapings_release_mmap (mmaps, map);
lumiera_file_delete (file);
/* check that the file got truncated to the desired size */
struct stat st;
stat (",tmp-filemmap", &st);
CHECK (st.st_size == 100);
lumiera_backend_destroy ();
lumiera_config_destroy ();
}
TEST (mmap_checkout_twice)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_CREATE);
lumiera_file_set_chunksize_bias (file, 4096, 0);
LumieraMMapings mmaps = lumiera_file_mmapings (file);
LumieraMMap map = lumiera_mmapings_mmap_acquire (mmaps, file, 0, 100);
LumieraMMap map2 = lumiera_mmapings_mmap_acquire (mmaps, file, 0, 100);
CHECK (map->address == map2->address);
lumiera_mmapings_release_mmap (mmaps, map);
lumiera_mmapings_release_mmap (mmaps, map2);
lumiera_file_delete (file);
/* check that the file got truncated to the desired size */
struct stat st;
stat (",tmp-filemmap", &st);
CHECK (st.st_size == 100);
lumiera_backend_destroy ();
lumiera_config_destroy ();
}
TEST (mmap_checkout_again)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_CREATE);
lumiera_file_set_chunksize_bias (file, 4096, 0);
LumieraMMapings mmaps = lumiera_file_mmapings (file);
LumieraMMap map = lumiera_mmapings_mmap_acquire (mmaps, file, 0, 100);
lumiera_mmapings_release_mmap (mmaps, map);
LumieraMMap map2 = lumiera_mmapings_mmap_acquire (mmaps, file, 0, 100);
lumiera_mmapings_release_mmap (mmaps, map2);
lumiera_file_delete (file);
/* check that the file got truncated to the desired size */
struct stat st;
stat (",tmp-filemmap", &st);
CHECK (st.st_size == 100);
lumiera_backend_destroy ();
lumiera_config_destroy ();
}
TEST (mmap_grow_existing_file)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_READWRITE);
lumiera_file_set_chunksize_bias (file, 4096, 0);
LumieraMMapings mmaps = lumiera_file_mmapings (file);
LumieraMMap map = lumiera_mmapings_mmap_acquire (mmaps, file, 0, 100);
lumiera_mmapings_release_mmap (mmaps, map);
lumiera_file_delete (file);
/* check that the file got truncated to the desired size */
struct stat st;
stat (",tmp-filemmap", &st);
CHECK (st.st_size == 100);
lumiera_backend_destroy ();
lumiera_config_destroy ();
}
TEST (mmap_readonly_file)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_READONLY);
lumiera_file_set_chunksize_bias (file, 4096, 0);
LumieraMMapings mmaps = lumiera_file_mmapings (file);
LumieraMMap map = lumiera_mmapings_mmap_acquire (mmaps, file, 0, 100);
lumiera_mmapings_release_mmap (mmaps, map);
lumiera_file_delete (file);
/* check that the file got truncated to the desired size */
struct stat st;
stat (",tmp-filemmap", &st);
CHECK (st.st_size == 100);
lumiera_backend_destroy ();
lumiera_config_destroy ();
}
TEST (file_access)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_RECREATE);
lumiera_file_set_chunksize_bias (file, 4096, 0);
LumieraMMap map = lumiera_file_mmap_acquire (file, 10, 100);
char* addr = lumiera_mmap_address (map, 20);
strcpy (addr, "test");
lumiera_file_release_mmap (file, map);
lumiera_file_delete (file);
lumiera_backend_destroy ();
}
TEST (exact_mmap)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_RECREATE);
LumieraMMap map = lumiera_mmap_new_exact (file, 0, 6);
char* addr = lumiera_mmap_address (map, 1);
strcpy (addr, "test");
lumiera_mmap_delete (map);
lumiera_file_delete (file);
lumiera_backend_destroy ();
}
TEST (mmap_section)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_RECREATE);
lumiera_file_set_chunksize_bias (file, 4096, 0);
LUMIERA_FILE_MMAP_SECTION (NOBUG_ON, file, 20, 20, addr)
{
strcpy (addr, "mmap section");
}
CHECK(lumiera_error_peek() == NULL);
lumiera_file_delete (file);
lumiera_backend_destroy ();
}
TEST (mmap_section_err)
{
lumiera_backend_init ();
LumieraFile file = lumiera_file_new (",tmp-filemmap", LUMIERA_FILE_RECREATE);
/* forgot to set lumiera_file_chunksize_set (file, 4096); */
LUMIERA_FILE_MMAP_SECTION (NOBUG_ON, file, 20, 20, addr)
{
strcpy (addr, "mmap section");
}
CHECK(lumiera_error_peek() == NULL);
lumiera_file_delete (file);
lumiera_backend_destroy ();
}
#if 0
TEST (refactored_usage)
{
LumieraFile file = lumiera_file_new ("filename", mode);
LumieraFrameIndex index = lumiera_frameindex_new ("indexfilename", file /*, indexing engine*/);
LumieraFrame frame = lumiera_frameindex_frame (index, 123);
//TAG+HINTS could be NEXT|PREV|EXACT|NEAREST|HARD|SOFT
lumiera_frame_prefetch (index, 123);
lumiera_frame_release (frame);
lumiera_frameindex_delete (index);
lumiera_file_free (file);
}
#endif
TESTS_END