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/*
* Copyright © 2012 Intel 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, see <http://www.gnu.org/licenses/>.
*
* Author: Benjamin Segovia <benjamin.segovia@intel.com>
*/
#include "utest_file_map.hpp"
#include "CL/cl.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#include <assert.h>
#include <string.h>
#include <stdio.h>
int
cl_file_map_init(cl_file_map_t *fm)
{
assert(fm);
memset(fm,0,sizeof(*fm));
return CL_SUCCESS;
}
void
cl_file_map_destroy(cl_file_map_t *fm)
{
if (fm->mapped) {
munmap(fm->start, fm->size);
fm->start = fm->stop = 0;
fm->size = 0;
fm->mapped = CL_FALSE;
}
if(fm->fd) {
close(fm->fd);
fm->fd = 0;
}
free(fm->name);
memset(fm,0,sizeof(*fm));
}
void
cl_file_map_delete(cl_file_map_t *fm)
{
if (fm == NULL)
return;
cl_file_map_destroy(fm);
free(fm);
}
cl_file_map_t*
cl_file_map_new(void)
{
cl_file_map_t *fm = NULL;
if ((fm = (cl_file_map_t *) calloc(1, sizeof(cl_file_map_t))) == NULL)
goto error;
if (cl_file_map_init(fm) != CL_SUCCESS)
goto error;
exit:
return fm;
error:
cl_file_map_delete(fm);
fm = NULL;
goto exit;
}
int
cl_file_map_open(cl_file_map_t *fm, const char *name)
{
int err = CL_FILE_MAP_SUCCESS;
/* Open the file */
fm->fd = open(name, O_RDONLY);
if(fm->fd < 0) {
err = CL_FILE_MAP_FILE_NOT_FOUND;
goto error;
}
if ((fm->name = (char*) calloc(strlen(name) + 1, sizeof(char))) == NULL)
goto error;
sprintf(fm->name, "%s", name);
/* Map it */
fm->size = lseek(fm->fd, 0, SEEK_END);
lseek(fm->fd, 0, SEEK_SET);
fm->start = mmap(0, fm->size, PROT_READ, MAP_SHARED, fm->fd, 0);
if(fm->start == NULL) {
err = CL_FILE_MAP_FAILED_TO_MMAP;
goto error;
}
fm->stop = ((char *) fm->start) + fm->size;
fm->mapped = CL_TRUE;
exit:
return err;
error:
cl_file_map_destroy(fm);
goto exit;
}
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