[fio.git] / libfio.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 <string.h>
#include <sys/types.h>
#include <signal.h>
#include <stdint.h>
#include <locale.h>
#include <fcntl.h>

#include "fio.h"
#include "smalloc.h"
#include "os/os.h"
#include "filelock.h"
#include "helper_thread.h"

/*
 * Just expose an empty list, if the OS does not support disk util stats
 */
#ifndef FIO_HAVE_DISK_UTIL
FLIST_HEAD(disk_list);
#endif

unsigned long arch_flags = 0;

uintptr_t page_mask = 0;
uintptr_t page_size = 0;

/* see os/os.h */
static const char *fio_os_strings[os_nr] = {
	"Invalid",
	"Linux",
	"AIX",
	"FreeBSD",
	"HP-UX",
	"OSX",
	"NetBSD",
	"OpenBSD",
	"Solaris",
	"Windows",
	"Android",
	"DragonFly",
};

/* see arch/arch.h */
static const char *fio_arch_strings[arch_nr] = {
	"Invalid",
	"x86-64",
	"x86",
	"ppc",
	"ia64",
	"s390",
	"alpha",
	"sparc",
	"sparc64",
	"arm",
	"sh",
	"hppa",
	"mips",
	"aarch64",
	"generic"
};

static void reset_io_counters(struct thread_data *td, int all)
{
	int ddir;

	if (all) {
		for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
			td->stat_io_bytes[ddir] = 0;
			td->this_io_bytes[ddir] = 0;
			td->stat_io_blocks[ddir] = 0;
			td->this_io_blocks[ddir] = 0;
			td->rate_bytes[ddir] = 0;
			td->rate_blocks[ddir] = 0;
			td->bytes_done[ddir] = 0;
			td->rate_io_issue_bytes[ddir] = 0;
			td->rate_next_io_time[ddir] = 0;
		}
	}

	td->zone_bytes = 0;

	td->last_was_sync = 0;
	td->rwmix_issues = 0;

	/*
	 * reset file done count if we are to start over
	 */
	if (td->o.time_based || td->o.loops || td->o.do_verify)
		td->nr_done_files = 0;
}

void clear_io_state(struct thread_data *td, int all)
{
	struct fio_file *f;
	unsigned int i;

	reset_io_counters(td, all);

	close_files(td);
	for_each_file(td, f, i) {
		fio_file_clear_done(f);
		f->file_offset = get_start_offset(td, f);
	}

	/*
	 * Re-Seed random number generator if rand_repeatable is true
	 */
	if (td->o.rand_repeatable)
		td_fill_rand_seeds(td);
}

void reset_all_stats(struct thread_data *td)
{
	int i;

	reset_io_counters(td, 1);

	for (i = 0; i < DDIR_RWDIR_CNT; i++) {
		td->io_bytes[i] = 0;
		td->io_blocks[i] = 0;
		td->io_issues[i] = 0;
		td->ts.total_io_u[i] = 0;
		td->ts.runtime[i] = 0;
		td->rwmix_issues = 0;
	}

	set_epoch_time(td, td->o.log_unix_epoch);
	memcpy(&td->start, &td->epoch, sizeof(struct timeval));
	memcpy(&td->iops_sample_time, &td->epoch, sizeof(struct timeval));
	memcpy(&td->bw_sample_time, &td->epoch, sizeof(struct timeval));

	lat_target_reset(td);
	clear_rusage_stat(td);
	helper_reset();
}

void reset_fio_state(void)
{
	groupid = 0;
	thread_number = 0;
	stat_number = 0;
	done_secs = 0;
}

const char *fio_get_os_string(int nr)
{
	if (nr < os_nr)
		return fio_os_strings[nr];

	return NULL;
}

const char *fio_get_arch_string(int nr)
{
	if (nr < arch_nr)
		return fio_arch_strings[nr];

	return NULL;
}

static const char *td_runstates[] = {
	"NOT_CREATED",
	"CREATED",
	"INITIALIZED",
	"RAMP",
	"SETTING_UP",
	"RUNNING",
	"PRE_READING",
	"VERIFYING",
	"FSYNCING",
	"FINISHING",
	"EXITED",
	"REAPED",
};

const char *runstate_to_name(int runstate)
{
	compiletime_assert(TD_LAST == 12, "td runstate list");
	if (runstate >= 0 && runstate < TD_LAST)
		return td_runstates[runstate];

	return "invalid";
}

void td_set_runstate(struct thread_data *td, int runstate)
{
	if (td->runstate == runstate)
		return;

	dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid,
						runstate_to_name(td->runstate),
						runstate_to_name(runstate));
	td->runstate = runstate;
}

int td_bump_runstate(struct thread_data *td, int new_state)
{
	int old_state = td->runstate;

	td_set_runstate(td, new_state);
	return old_state;
}

void td_restore_runstate(struct thread_data *td, int old_state)
{
	td_set_runstate(td, old_state);
}

void fio_mark_td_terminate(struct thread_data *td)
{
	fio_gettime(&td->terminate_time, NULL);
	write_barrier();
	td->terminate = 1;
}

void fio_terminate_threads(unsigned int group_id)
{
	struct thread_data *td;
	pid_t pid = getpid();
	int i;

	dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);

	for_each_td(td, i) {
		if (group_id == TERMINATE_ALL || group_id == td->groupid) {
			dprint(FD_PROCESS, "setting terminate on %s/%d\n",
						td->o.name, (int) td->pid);

			if (td->terminate)
				continue;

			fio_mark_td_terminate(td);
			td->o.start_delay = 0;

			/*
			 * if the thread is running, just let it exit
			 */
			if (!td->pid || pid == td->pid)
				continue;
			else if (td->runstate < TD_RAMP)
				kill(td->pid, SIGTERM);
			else {
				struct ioengine_ops *ops = td->io_ops;

				if (ops && ops->terminate)
					ops->terminate(td);
			}
		}
	}
}

int fio_running_or_pending_io_threads(void)
{
	struct thread_data *td;
	int i;
	int nr_io_threads = 0;

	for_each_td(td, i) {
		if (td->flags & TD_F_NOIO)
			continue;
		nr_io_threads++;
		if (td->runstate < TD_EXITED)
			return 1;
	}

	if (!nr_io_threads)
		return -1; /* we only had cpuio threads to begin with */
	return 0;
}

int fio_set_fd_nonblocking(int fd, const char *who)
{
	int flags;

	flags = fcntl(fd, F_GETFL);
	if (flags < 0)
		log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
	else {
		int new_flags = flags | O_NONBLOCK;

		new_flags = fcntl(fd, F_SETFL, new_flags);
		if (new_flags < 0)
			log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
	}

	return flags;
}

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(CONFIG_LITTLE_ENDIAN)
	if (be)
		return 1;
#elif defined(CONFIG_BIG_ENDIAN)
	if (le)
		return 1;
#else
	return 1;
#endif

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

	return 0;
}

int initialize_fio(char *envp[])
{
	long ps;

	/*
	 * We need these to be properly 64-bit aligned, otherwise we
	 * can run into problems on archs that fault on unaligned fp
	 * access (ARM).
	 */
	compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
	compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
	compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
	compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
	compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
	compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
	compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
	compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");

	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;
	}

#if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
#error "No available clock source!"
#endif

	arch_init(envp);

	sinit();

	if (fio_filelock_init()) {
		log_err("fio: failed initializing filelock subsys\n");
		return 1;
	}

	/*
	 * 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();
	return 0;
}

void deinitialize_fio(void)
{
	fio_keywords_exit();
}
Commit	Line	Data
2e1df07d JA	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
	25	#include <string.h>
59dfce57 JA	26	#include <sys/types.h>
59dfce57 JA	27	#include <signal.h>
a569b45f JA	28	#include <stdint.h>
a569b45f JA	29	#include <locale.h>
4a851614	30	#include <fcntl.h>
a569b45f	31
2e1df07d	32	#include "fio.h"
a569b45f JA	33	#include "smalloc.h"
a569b45f JA	34	#include "os/os.h"
243bfe19	35	#include "filelock.h"
a39fb9ea	36	#include "helper_thread.h"
2e1df07d	37
a3efc919 JA	38	/*
	39	* Just expose an empty list, if the OS does not support disk util stats
	40	*/
	41	#ifndef FIO_HAVE_DISK_UTIL
	42	FLIST_HEAD(disk_list);
	43	#endif
	44
	45	unsigned long arch_flags = 0;
	46
a569b45f JA	47	uintptr_t page_mask = 0;
	48	uintptr_t page_size = 0;
	49
c6da2c34	50	/* see os/os.h */
2e1df07d JA	51	static const char *fio_os_strings[os_nr] = {
	52	"Invalid",
	53	"Linux",
	54	"AIX",
	55	"FreeBSD",
	56	"HP-UX",
	57	"OSX",
	58	"NetBSD",
1c7eaa7b	59	"OpenBSD",
2e1df07d	60	"Solaris",
1c7eaa7b JA	61	"Windows",
1c7eaa7b JA	62	"Android",
239b2882	63	"DragonFly",
2e1df07d JA	64	};
2e1df07d JA	65
c6da2c34	66	/* see arch/arch.h */
2e1df07d JA	67	static const char *fio_arch_strings[arch_nr] = {
	68	"Invalid",
	69	"x86-64",
	70	"x86",
	71	"ppc",
	72	"ia64",
	73	"s390",
	74	"alpha",
	75	"sparc",
	76	"sparc64",
	77	"arm",
	78	"sh",
	79	"hppa",
c6da2c34 TK	80	"mips",
c6da2c34 TK	81	"aarch64",
2e1df07d JA	82	"generic"
	83	};
	84
ac28d905	85	static void reset_io_counters(struct thread_data *td, int all)
2e1df07d	86	{
6eaf09d6	87	int ddir;
bcd5abfa	88
ac28d905 JA	89	if (all) {
	90	for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
	91	td->stat_io_bytes[ddir] = 0;
	92	td->this_io_bytes[ddir] = 0;
	93	td->stat_io_blocks[ddir] = 0;
	94	td->this_io_blocks[ddir] = 0;
	95	td->rate_bytes[ddir] = 0;
	96	td->rate_blocks[ddir] = 0;
	97	td->bytes_done[ddir] = 0;
	98	td->rate_io_issue_bytes[ddir] = 0;
	99	td->rate_next_io_time[ddir] = 0;
	100	}
6eaf09d6	101	}
ac28d905	102
2e1df07d	103	td->zone_bytes = 0;
2e1df07d JA	104
2e1df07d JA	105	td->last_was_sync = 0;
bcd5abfa	106	td->rwmix_issues = 0;
2e1df07d JA	107
	108	/*
	109	* reset file done count if we are to start over
	110	*/
44cbc6da	111	if (td->o.time_based \|\| td->o.loops \|\| td->o.do_verify)
2e1df07d JA	112	td->nr_done_files = 0;
	113	}
	114
ac28d905	115	void clear_io_state(struct thread_data *td, int all)
2e1df07d JA	116	{
	117	struct fio_file *f;
	118	unsigned int i;
	119
ac28d905	120	reset_io_counters(td, all);
2e1df07d JA	121
2e1df07d JA	122	close_files(td);
ec803e97	123	for_each_file(td, f, i) {
2e1df07d	124	fio_file_clear_done(f);
ec803e97 BF	125	f->file_offset = get_start_offset(td, f);
ec803e97 BF	126	}
2e1df07d JA	127
2e1df07d JA	128	/*
1520f26e	129	* Re-Seed random number generator if rand_repeatable is true
2e1df07d	130	*/
1520f26e D	131	if (td->o.rand_repeatable)
1520f26e D	132	td_fill_rand_seeds(td);
2e1df07d JA	133	}
	134
	135	void reset_all_stats(struct thread_data *td)
	136	{
2e1df07d JA	137	int i;
2e1df07d JA	138
ac28d905	139	reset_io_counters(td, 1);
2e1df07d	140
6eaf09d6	141	for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2e1df07d JA	142	td->io_bytes[i] = 0;
	143	td->io_blocks[i] = 0;
	144	td->io_issues[i] = 0;
	145	td->ts.total_io_u[i] = 0;
6eaf09d6	146	td->ts.runtime[i] = 0;
5b3faae6	147	td->rwmix_issues = 0;
2e1df07d JA	148	}
2e1df07d JA	149
3aea75b1 KC	150	set_epoch_time(td, td->o.log_unix_epoch);
	151	memcpy(&td->start, &td->epoch, sizeof(struct timeval));
	152	memcpy(&td->iops_sample_time, &td->epoch, sizeof(struct timeval));
	153	memcpy(&td->bw_sample_time, &td->epoch, sizeof(struct timeval));
3e260a46	154
6bb58215	155	lat_target_reset(td);
210dd0fc	156	clear_rusage_stat(td);
a47591e4	157	helper_reset();
2e1df07d JA	158	}
	159
	160	void reset_fio_state(void)
	161	{
	162	groupid = 0;
	163	thread_number = 0;
2caefeec	164	stat_number = 0;
2e1df07d JA	165	done_secs = 0;
	166	}
	167
	168	const char *fio_get_os_string(int nr)
	169	{
	170	if (nr < os_nr)
	171	return fio_os_strings[nr];
	172
	173	return NULL;
	174	}
	175
	176	const char *fio_get_arch_string(int nr)
	177	{
	178	if (nr < arch_nr)
	179	return fio_arch_strings[nr];
	180
	181	return NULL;
	182	}
	183
6e760cf3 JA	184	static const char *td_runstates[] = {
	185	"NOT_CREATED",
	186	"CREATED",
	187	"INITIALIZED",
	188	"RAMP",
	189	"SETTING_UP",
	190	"RUNNING",
	191	"PRE_READING",
	192	"VERIFYING",
	193	"FSYNCING",
	194	"FINISHING",
	195	"EXITED",
	196	"REAPED",
	197	};
	198
9cc8cb91	199	const char *runstate_to_name(int runstate)
6e760cf3 JA	200	{
	201	compiletime_assert(TD_LAST == 12, "td runstate list");
	202	if (runstate >= 0 && runstate < TD_LAST)
	203	return td_runstates[runstate];
	204
	205	return "invalid";
	206	}
	207
2e1df07d JA	208	void td_set_runstate(struct thread_data *td, int runstate)
	209	{
	210	if (td->runstate == runstate)
	211	return;
	212
6e760cf3 JA	213	dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid,
	214	runstate_to_name(td->runstate),
	215	runstate_to_name(runstate));
2e1df07d JA	216	td->runstate = runstate;
	217	}
	218
8edd973d JA	219	int td_bump_runstate(struct thread_data *td, int new_state)
	220	{
	221	int old_state = td->runstate;
	222
	223	td_set_runstate(td, new_state);
	224	return old_state;
	225	}
	226
	227	void td_restore_runstate(struct thread_data *td, int old_state)
	228	{
	229	td_set_runstate(td, old_state);
	230	}
	231
ebea2133 JA	232	void fio_mark_td_terminate(struct thread_data *td)
	233	{
	234	fio_gettime(&td->terminate_time, NULL);
	235	write_barrier();
	236	td->terminate = 1;
	237	}
	238
d883efbd	239	void fio_terminate_threads(unsigned int group_id)
2e1df07d JA	240	{
2e1df07d JA	241	struct thread_data *td;
41fa20ec	242	pid_t pid = getpid();
2e1df07d JA	243	int i;
	244
	245	dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
	246
	247	for_each_td(td, i) {
d883efbd	248	if (group_id == TERMINATE_ALL \|\| group_id == td->groupid) {
2e1df07d JA	249	dprint(FD_PROCESS, "setting terminate on %s/%d\n",
2e1df07d JA	250	td->o.name, (int) td->pid);
cba5460c JA	251
	252	if (td->terminate)
	253	continue;
	254
ebea2133	255	fio_mark_td_terminate(td);
2e1df07d JA	256	td->o.start_delay = 0;
	257
	258	/*
	259	* if the thread is running, just let it exit
	260	*/
36d80bc7	261	if (!td->pid \|\| pid == td->pid)
2e1df07d JA	262	continue;
	263	else if (td->runstate < TD_RAMP)
	264	kill(td->pid, SIGTERM);
36d80bc7	265	else {
2e1df07d JA	266	struct ioengine_ops *ops = td->io_ops;
2e1df07d JA	267
36d80bc7 JA	268	if (ops && ops->terminate)
36d80bc7 JA	269	ops->terminate(td);
2e1df07d JA	270	}
	271	}
	272	}
	273	}
	274
046395d7 JA	275	int fio_running_or_pending_io_threads(void)
	276	{
	277	struct thread_data *td;
	278	int i;
a691d82f	279	int nr_io_threads = 0;
046395d7 JA	280
	281	for_each_td(td, i) {
	282	if (td->flags & TD_F_NOIO)
	283	continue;
a691d82f	284	nr_io_threads++;
046395d7 JA	285	if (td->runstate < TD_EXITED)
	286	return 1;
	287	}
	288
a691d82f TK	289	if (!nr_io_threads)
a691d82f TK	290	return -1; /* we only had cpuio threads to begin with */
046395d7 JA	291	return 0;
	292	}
	293
3a35845f	294	int fio_set_fd_nonblocking(int fd, const char *who)
4a851614 JA	295	{
	296	int flags;
	297
	298	flags = fcntl(fd, F_GETFL);
	299	if (flags < 0)
	300	log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
	301	else {
3a35845f JA	302	int new_flags = flags \| O_NONBLOCK;
	303
	304	new_flags = fcntl(fd, F_SETFL, new_flags);
	305	if (new_flags < 0)
4a851614 JA	306	log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
4a851614 JA	307	}
3a35845f JA	308
3a35845f JA	309	return flags;
4a851614 JA	310	}
4a851614 JA	311
a569b45f JA	312	static int endian_check(void)
	313	{
	314	union {
	315	uint8_t c[8];
	316	uint64_t v;
	317	} u;
	318	int le = 0, be = 0;
	319
	320	u.v = 0x12;
	321	if (u.c[7] == 0x12)
	322	be = 1;
	323	else if (u.c[0] == 0x12)
	324	le = 1;
	325
	326	#if defined(CONFIG_LITTLE_ENDIAN)
	327	if (be)
	328	return 1;
	329	#elif defined(CONFIG_BIG_ENDIAN)
	330	if (le)
	331	return 1;
	332	#else
	333	return 1;
	334	#endif
	335
	336	if (!le && !be)
	337	return 1;
	338
	339	return 0;
	340	}
	341
	342	int initialize_fio(char *envp[])
	343	{
	344	long ps;
	345
976a7756 JA	346	/*
	347	* We need these to be properly 64-bit aligned, otherwise we
	348	* can run into problems on archs that fault on unaligned fp
	349	* access (ARM).
	350	*/
24ffb6f8	351	compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
3d0ebb30 GG	352	compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
3d0ebb30 GG	353	compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
24ffb6f8 JA	354	compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
	355	compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
	356	compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
	357	compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
b8c6b4de	358	compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");
976a7756	359
a569b45f JA	360	if (endian_check()) {
	361	log_err("fio: endianness settings appear wrong.\n");
	362	log_err("fio: please report this to fio@vger.kernel.org\n");
	363	return 1;
	364	}
	365
	366	#if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
	367	#error "No available clock source!"
	368	#endif
	369
	370	arch_init(envp);
	371
	372	sinit();
	373
243bfe19 JA	374	if (fio_filelock_init()) {
	375	log_err("fio: failed initializing filelock subsys\n");
	376	return 1;
	377	}
	378
a569b45f JA	379	/*
	380	* We need locale for number printing, if it isn't set then just
	381	* go with the US format.
	382	*/
	383	if (!getenv("LC_NUMERIC"))
	384	setlocale(LC_NUMERIC, "en_US");
	385
	386	ps = sysconf(_SC_PAGESIZE);
	387	if (ps < 0) {
	388	log_err("Failed to get page size\n");
	389	return 1;
	390	}
	391
	392	page_size = ps;
	393	page_mask = ps - 1;
2e1df07d	394
a569b45f JA	395	fio_keywords_init();
	396	return 0;
	397	}
af1dc266 JA	398
	399	void deinitialize_fio(void)
	400	{
	401	fio_keywords_exit();
	402	}