[fio.git] / fio.c

/*
 * fio - the flexible io tester
 *
 * Copyright (C) 2005 Jens Axboe <axboe@suse.de>
 * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
 *
 * The license below covers all files distributed with fio unless otherwise
 * noted in the file itself.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <limits.h>
#include <signal.h>
#include <time.h>
#include <locale.h>
#include <assert.h>
#include <time.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/mman.h>

#include "fio.h"
#include "hash.h"
#include "smalloc.h"
#include "verify.h"
#include "trim.h"
#include "diskutil.h"
#include "cgroup.h"
#include "profile.h"
#include "lib/rand.h"
#include "memalign.h"
#include "server.h"

unsigned long page_mask;
unsigned long page_size;

static int endian_check(void)
{
	union {
		uint8_t c[8];
		uint64_t v;
	} u;
	int le = 0, be = 0;

	u.v = 0x12;
	if (u.c[7] == 0x12)
		be = 1;
	else if (u.c[0] == 0x12)
		le = 1;

#if defined(FIO_LITTLE_ENDIAN)
	if (be)
		return 1;
#elif defined(FIO_BIG_ENDIAN)
	if (le)
		return 1;
#else
	return 1;
#endif

	if (!le && !be)
		return 1;

	return 0;
}

int main(int argc, char *argv[], char *envp[])
{
	long ps;

	if (endian_check()) {
		log_err("fio: endianness settings appear wrong.\n");
		log_err("fio: please report this to fio@vger.kernel.org\n");
		return 1;
	}

	arch_init(envp);

	sinit();

	/*
	 * We need locale for number printing, if it isn't set then just
	 * go with the US format.
	 */
	if (!getenv("LC_NUMERIC"))
		setlocale(LC_NUMERIC, "en_US");

	ps = sysconf(_SC_PAGESIZE);
	if (ps < 0) {
		log_err("Failed to get page size\n");
		return 1;
	}

	page_size = ps;
	page_mask = ps - 1;

	fio_keywords_init();

	if (parse_options(argc, argv))
		return 1;

	if (nr_clients)
		return fio_handle_clients();
	else
		return fio_backend();
}
Commit	Line	Data
	1	/*
	2	* fio - the flexible io tester
	3	*
	4	* Copyright (C) 2005 Jens Axboe <axboe@suse.de>
	5	* Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
	6	*
	7	* The license below covers all files distributed with fio unless otherwise
	8	* noted in the file itself.
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*
	23	*/
	24	#include <unistd.h>
	25	#include <fcntl.h>
	26	#include <string.h>
	27	#include <limits.h>
	28	#include <signal.h>
	29	#include <time.h>
	30	#include <locale.h>
	31	#include <assert.h>
	32	#include <time.h>
	33	#include <sys/stat.h>
	34	#include <sys/wait.h>
	35	#include <sys/ipc.h>
	36	#include <sys/shm.h>
	37	#include <sys/mman.h>
	38
	39	#include "fio.h"
	40	#include "hash.h"
	41	#include "smalloc.h"
	42	#include "verify.h"
	43	#include "trim.h"
	44	#include "diskutil.h"
	45	#include "cgroup.h"
	46	#include "profile.h"
	47	#include "lib/rand.h"
	48	#include "memalign.h"
	49	#include "server.h"
	50
	51	unsigned long page_mask;
	52	unsigned long page_size;
	53
	54	static int endian_check(void)
	55	{
	56	union {
	57	uint8_t c[8];
	58	uint64_t v;
	59	} u;
	60	int le = 0, be = 0;
	61
	62	u.v = 0x12;
	63	if (u.c[7] == 0x12)
	64	be = 1;
	65	else if (u.c[0] == 0x12)
	66	le = 1;
	67
	68	#if defined(FIO_LITTLE_ENDIAN)
	69	if (be)
	70	return 1;
	71	#elif defined(FIO_BIG_ENDIAN)
	72	if (le)
	73	return 1;
	74	#else
	75	return 1;
	76	#endif
	77
	78	if (!le && !be)
	79	return 1;
	80
	81	return 0;
	82	}
	83
	84	int main(int argc, char argv[], char envp[])
	85	{
	86	long ps;
	87
	88	if (endian_check()) {
	89	log_err("fio: endianness settings appear wrong.\n");
	90	log_err("fio: please report this to fio@vger.kernel.org\n");
	91	return 1;
	92	}
	93
	94	arch_init(envp);
	95
	96	sinit();
	97
	98	/*
	99	* We need locale for number printing, if it isn't set then just
	100	* go with the US format.
	101	*/
	102	if (!getenv("LC_NUMERIC"))
	103	setlocale(LC_NUMERIC, "en_US");
	104
	105	ps = sysconf(_SC_PAGESIZE);
	106	if (ps < 0) {
	107	log_err("Failed to get page size\n");
	108	return 1;
	109	}
	110
	111	page_size = ps;
	112	page_mask = ps - 1;
	113
	114	fio_keywords_init();
	115
	116	if (parse_options(argc, argv))
	117	return 1;
	118
	119	if (nr_clients)
	120	return fio_handle_clients();
	121	else
	122	return fio_backend();
	123	}