[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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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"
#include "filehash.h"

FLIST_HEAD(disk_list);

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(td->epoch));
	memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
	memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
	memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch));

	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->io_ops_init && td_ioengine_flagged(td, FIO_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;
}

enum {
	ENDIAN_INVALID_BE = 1,
	ENDIAN_INVALID_LE,
	ENDIAN_INVALID_CONFIG,
	ENDIAN_BROKEN,
};

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 ENDIAN_INVALID_BE;
#elif defined(CONFIG_BIG_ENDIAN)
	if (le)
		return ENDIAN_INVALID_LE;
#else
	return ENDIAN_INVALID_CONFIG;
#endif

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

	return 0;
}

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

	/*
	 * 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_data, ts) % sizeof(void *)) == 0, "ts");
	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_data, ts.clat_stat) % 8) == 0, "ts.clat_stat");
	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");
	compiletime_assert((offsetof(struct jobs_eta, m_rate) % 8) == 0, "m_rate");

	compiletime_assert(__TD_F_LAST <= TD_ENG_FLAG_SHIFT, "TD_ENG_FLAG_SHIFT");

	err = endian_check();
	if (err) {
		log_err("fio: endianness settings appear wrong.\n");
		switch (err) {
		case ENDIAN_INVALID_BE:
			log_err("fio: got big-endian when configured for little\n");
			break;
		case ENDIAN_INVALID_LE:
			log_err("fio: got little-endian when configured for big\n");
			break;
		case ENDIAN_INVALID_CONFIG:
			log_err("fio: not configured to any endianness\n");
			break;
		case ENDIAN_BROKEN:
			log_err("fio: failed to detect endianness\n");
			break;
		default:
			assert(0);
			break;
		}
		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;
	}

	file_hash_init();

	/*
	 * 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
fa07eaa6	21	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
2e1df07d JA	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"
d619275c	37	#include "filehash.h"
2e1df07d	38
a3efc919	39	FLIST_HEAD(disk_list);
a3efc919 JA	40
	41	unsigned long arch_flags = 0;
	42
a569b45f JA	43	uintptr_t page_mask = 0;
	44	uintptr_t page_size = 0;
	45
c6da2c34	46	/* see os/os.h */
2e1df07d JA	47	static const char *fio_os_strings[os_nr] = {
	48	"Invalid",
	49	"Linux",
	50	"AIX",
	51	"FreeBSD",
	52	"HP-UX",
	53	"OSX",
	54	"NetBSD",
1c7eaa7b	55	"OpenBSD",
2e1df07d	56	"Solaris",
1c7eaa7b JA	57	"Windows",
1c7eaa7b JA	58	"Android",
239b2882	59	"DragonFly",
2e1df07d JA	60	};
2e1df07d JA	61
c6da2c34	62	/* see arch/arch.h */
2e1df07d JA	63	static const char *fio_arch_strings[arch_nr] = {
	64	"Invalid",
	65	"x86-64",
	66	"x86",
	67	"ppc",
	68	"ia64",
	69	"s390",
	70	"alpha",
	71	"sparc",
	72	"sparc64",
	73	"arm",
	74	"sh",
	75	"hppa",
c6da2c34 TK	76	"mips",
c6da2c34 TK	77	"aarch64",
2e1df07d JA	78	"generic"
	79	};
	80
ac28d905	81	static void reset_io_counters(struct thread_data *td, int all)
2e1df07d	82	{
6eaf09d6	83	int ddir;
bcd5abfa	84
ac28d905 JA	85	if (all) {
	86	for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
	87	td->stat_io_bytes[ddir] = 0;
	88	td->this_io_bytes[ddir] = 0;
	89	td->stat_io_blocks[ddir] = 0;
	90	td->this_io_blocks[ddir] = 0;
	91	td->rate_bytes[ddir] = 0;
	92	td->rate_blocks[ddir] = 0;
	93	td->bytes_done[ddir] = 0;
	94	td->rate_io_issue_bytes[ddir] = 0;
	95	td->rate_next_io_time[ddir] = 0;
	96	}
6eaf09d6	97	}
ac28d905	98
2e1df07d	99	td->zone_bytes = 0;
2e1df07d JA	100
2e1df07d JA	101	td->last_was_sync = 0;
bcd5abfa	102	td->rwmix_issues = 0;
2e1df07d JA	103
	104	/*
	105	* reset file done count if we are to start over
	106	*/
44cbc6da	107	if (td->o.time_based \|\| td->o.loops \|\| td->o.do_verify)
2e1df07d JA	108	td->nr_done_files = 0;
	109	}
	110
ac28d905	111	void clear_io_state(struct thread_data *td, int all)
2e1df07d JA	112	{
	113	struct fio_file *f;
	114	unsigned int i;
	115
ac28d905	116	reset_io_counters(td, all);
2e1df07d JA	117
2e1df07d JA	118	close_files(td);
ec803e97	119	for_each_file(td, f, i) {
2e1df07d	120	fio_file_clear_done(f);
ec803e97 BF	121	f->file_offset = get_start_offset(td, f);
ec803e97 BF	122	}
2e1df07d JA	123
2e1df07d JA	124	/*
1520f26e	125	* Re-Seed random number generator if rand_repeatable is true
2e1df07d	126	*/
1520f26e D	127	if (td->o.rand_repeatable)
1520f26e D	128	td_fill_rand_seeds(td);
2e1df07d JA	129	}
	130
	131	void reset_all_stats(struct thread_data *td)
	132	{
2e1df07d JA	133	int i;
2e1df07d JA	134
ac28d905	135	reset_io_counters(td, 1);
2e1df07d	136
6eaf09d6	137	for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2e1df07d JA	138	td->io_bytes[i] = 0;
	139	td->io_blocks[i] = 0;
	140	td->io_issues[i] = 0;
	141	td->ts.total_io_u[i] = 0;
6eaf09d6	142	td->ts.runtime[i] = 0;
5b3faae6	143	td->rwmix_issues = 0;
2e1df07d JA	144	}
2e1df07d JA	145
3aea75b1	146	set_epoch_time(td, td->o.log_unix_epoch);
8b6a404c VF	147	memcpy(&td->start, &td->epoch, sizeof(td->epoch));
	148	memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
	149	memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
	150	memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch));
3e260a46	151
6bb58215	152	lat_target_reset(td);
210dd0fc	153	clear_rusage_stat(td);
a47591e4	154	helper_reset();
2e1df07d JA	155	}
	156
	157	void reset_fio_state(void)
	158	{
	159	groupid = 0;
	160	thread_number = 0;
2caefeec	161	stat_number = 0;
2e1df07d JA	162	done_secs = 0;
	163	}
	164
	165	const char *fio_get_os_string(int nr)
	166	{
	167	if (nr < os_nr)
	168	return fio_os_strings[nr];
	169
	170	return NULL;
	171	}
	172
	173	const char *fio_get_arch_string(int nr)
	174	{
	175	if (nr < arch_nr)
	176	return fio_arch_strings[nr];
	177
	178	return NULL;
	179	}
	180
6e760cf3 JA	181	static const char *td_runstates[] = {
	182	"NOT_CREATED",
	183	"CREATED",
	184	"INITIALIZED",
	185	"RAMP",
	186	"SETTING_UP",
	187	"RUNNING",
	188	"PRE_READING",
	189	"VERIFYING",
	190	"FSYNCING",
	191	"FINISHING",
	192	"EXITED",
	193	"REAPED",
	194	};
	195
9cc8cb91	196	const char *runstate_to_name(int runstate)
6e760cf3 JA	197	{
	198	compiletime_assert(TD_LAST == 12, "td runstate list");
	199	if (runstate >= 0 && runstate < TD_LAST)
	200	return td_runstates[runstate];
	201
	202	return "invalid";
	203	}
	204
2e1df07d JA	205	void td_set_runstate(struct thread_data *td, int runstate)
	206	{
	207	if (td->runstate == runstate)
	208	return;
	209
6e760cf3 JA	210	dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid,
	211	runstate_to_name(td->runstate),
	212	runstate_to_name(runstate));
2e1df07d JA	213	td->runstate = runstate;
	214	}
	215
8edd973d JA	216	int td_bump_runstate(struct thread_data *td, int new_state)
	217	{
	218	int old_state = td->runstate;
	219
	220	td_set_runstate(td, new_state);
	221	return old_state;
	222	}
	223
	224	void td_restore_runstate(struct thread_data *td, int old_state)
	225	{
	226	td_set_runstate(td, old_state);
	227	}
	228
ebea2133 JA	229	void fio_mark_td_terminate(struct thread_data *td)
	230	{
	231	fio_gettime(&td->terminate_time, NULL);
	232	write_barrier();
	233	td->terminate = 1;
	234	}
	235
d883efbd	236	void fio_terminate_threads(unsigned int group_id)
2e1df07d JA	237	{
2e1df07d JA	238	struct thread_data *td;
41fa20ec	239	pid_t pid = getpid();
2e1df07d JA	240	int i;
	241
	242	dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
	243
	244	for_each_td(td, i) {
d883efbd	245	if (group_id == TERMINATE_ALL \|\| group_id == td->groupid) {
2e1df07d JA	246	dprint(FD_PROCESS, "setting terminate on %s/%d\n",
2e1df07d JA	247	td->o.name, (int) td->pid);
cba5460c JA	248
	249	if (td->terminate)
	250	continue;
	251
ebea2133	252	fio_mark_td_terminate(td);
2e1df07d JA	253	td->o.start_delay = 0;
	254
	255	/*
	256	* if the thread is running, just let it exit
	257	*/
36d80bc7	258	if (!td->pid \|\| pid == td->pid)
2e1df07d JA	259	continue;
	260	else if (td->runstate < TD_RAMP)
	261	kill(td->pid, SIGTERM);
36d80bc7	262	else {
2e1df07d JA	263	struct ioengine_ops *ops = td->io_ops;
2e1df07d JA	264
36d80bc7 JA	265	if (ops && ops->terminate)
36d80bc7 JA	266	ops->terminate(td);
2e1df07d JA	267	}
	268	}
	269	}
	270	}
	271
046395d7 JA	272	int fio_running_or_pending_io_threads(void)
	273	{
	274	struct thread_data *td;
	275	int i;
a691d82f	276	int nr_io_threads = 0;
046395d7 JA	277
046395d7 JA	278	for_each_td(td, i) {
356ef1a1	279	if (td->io_ops_init && td_ioengine_flagged(td, FIO_NOIO))
046395d7	280	continue;
a691d82f	281	nr_io_threads++;
046395d7 JA	282	if (td->runstate < TD_EXITED)
	283	return 1;
	284	}
	285
a691d82f TK	286	if (!nr_io_threads)
a691d82f TK	287	return -1; /* we only had cpuio threads to begin with */
046395d7 JA	288	return 0;
	289	}
	290
3a35845f	291	int fio_set_fd_nonblocking(int fd, const char *who)
4a851614 JA	292	{
	293	int flags;
	294
	295	flags = fcntl(fd, F_GETFL);
	296	if (flags < 0)
	297	log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
	298	else {
3a35845f JA	299	int new_flags = flags \| O_NONBLOCK;
	300
	301	new_flags = fcntl(fd, F_SETFL, new_flags);
	302	if (new_flags < 0)
4a851614 JA	303	log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
4a851614 JA	304	}
3a35845f JA	305
3a35845f JA	306	return flags;
4a851614 JA	307	}
4a851614 JA	308
1a50e7f0 TK	309	enum {
	310	ENDIAN_INVALID_BE = 1,
	311	ENDIAN_INVALID_LE,
	312	ENDIAN_INVALID_CONFIG,
	313	ENDIAN_BROKEN,
	314	};
	315
a569b45f JA	316	static int endian_check(void)
	317	{
	318	union {
	319	uint8_t c[8];
	320	uint64_t v;
	321	} u;
	322	int le = 0, be = 0;
	323
	324	u.v = 0x12;
	325	if (u.c[7] == 0x12)
	326	be = 1;
	327	else if (u.c[0] == 0x12)
	328	le = 1;
	329
	330	#if defined(CONFIG_LITTLE_ENDIAN)
	331	if (be)
1a50e7f0	332	return ENDIAN_INVALID_BE;
a569b45f JA	333	#elif defined(CONFIG_BIG_ENDIAN)
a569b45f JA	334	if (le)
1a50e7f0	335	return ENDIAN_INVALID_LE;
a569b45f	336	#else
1a50e7f0	337	return ENDIAN_INVALID_CONFIG;
a569b45f JA	338	#endif
	339
	340	if (!le && !be)
1a50e7f0	341	return ENDIAN_BROKEN;
a569b45f JA	342
	343	return 0;
	344	}
	345
	346	int initialize_fio(char *envp[])
	347	{
	348	long ps;
1a50e7f0	349	int err;
a569b45f	350
976a7756 JA	351	/*
	352	* We need these to be properly 64-bit aligned, otherwise we
	353	* can run into problems on archs that fault on unaligned fp
	354	* access (ARM).
	355	*/
dbf285f7	356	compiletime_assert((offsetof(struct thread_data, ts) % sizeof(void *)) == 0, "ts");
24ffb6f8	357	compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
3d0ebb30 GG	358	compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
3d0ebb30 GG	359	compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
24ffb6f8	360	compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
dbf285f7	361	compiletime_assert((offsetof(struct thread_data, ts.clat_stat) % 8) == 0, "ts.clat_stat");
24ffb6f8 JA	362	compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
	363	compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
	364	compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
b8c6b4de	365	compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");
dbf285f7	366	compiletime_assert((offsetof(struct jobs_eta, m_rate) % 8) == 0, "m_rate");
976a7756	367
9c6f1e75 JA	368	compiletime_assert(__TD_F_LAST <= TD_ENG_FLAG_SHIFT, "TD_ENG_FLAG_SHIFT");
9c6f1e75 JA	369
1a50e7f0 TK	370	err = endian_check();
1a50e7f0 TK	371	if (err) {
a569b45f	372	log_err("fio: endianness settings appear wrong.\n");
1a50e7f0 TK	373	switch (err) {
	374	case ENDIAN_INVALID_BE:
	375	log_err("fio: got big-endian when configured for little\n");
	376	break;
	377	case ENDIAN_INVALID_LE:
	378	log_err("fio: got little-endian when configured for big\n");
	379	break;
	380	case ENDIAN_INVALID_CONFIG:
	381	log_err("fio: not configured to any endianness\n");
	382	break;
	383	case ENDIAN_BROKEN:
	384	log_err("fio: failed to detect endianness\n");
	385	break;
	386	default:
	387	assert(0);
	388	break;
	389	}
a569b45f JA	390	log_err("fio: please report this to fio@vger.kernel.org\n");
	391	return 1;
	392	}
	393
	394	#if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
	395	#error "No available clock source!"
	396	#endif
	397
	398	arch_init(envp);
	399
	400	sinit();
	401
243bfe19 JA	402	if (fio_filelock_init()) {
	403	log_err("fio: failed initializing filelock subsys\n");
	404	return 1;
	405	}
	406
d619275c JA	407	file_hash_init();
d619275c JA	408
a569b45f JA	409	/*
	410	* We need locale for number printing, if it isn't set then just
	411	* go with the US format.
	412	*/
	413	if (!getenv("LC_NUMERIC"))
	414	setlocale(LC_NUMERIC, "en_US");
	415
	416	ps = sysconf(_SC_PAGESIZE);
	417	if (ps < 0) {
	418	log_err("Failed to get page size\n");
	419	return 1;
	420	}
	421
	422	page_size = ps;
	423	page_mask = ps - 1;
2e1df07d	424
a569b45f JA	425	fio_keywords_init();
	426	return 0;
	427	}
af1dc266 JA	428
	429	void deinitialize_fio(void)
	430	{
	431	fio_keywords_exit();
	432	}