[userspace-rcu.git] / tests / benchmark / test_perthreadlock.c

/*
 * test_urcu.c
 *
 * Userspace RCU library - test program
 *
 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>

#include <urcu/arch.h>
#include <urcu/tls-compat.h>
#include "cpuset.h"
#include "thread-id.h"

/* hardcoded number of CPUs */
#define NR_CPUS 16384

#ifndef DYNAMIC_LINK_TEST
#define _LGPL_SOURCE
#endif
#include <urcu.h>

struct test_array {
	int a;
};

struct per_thread_lock {
	pthread_mutex_t lock;
} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));	/* cache-line aligned */

static struct per_thread_lock *per_thread_lock;

static volatile int test_go, test_stop;

static unsigned long wdelay;

static volatile struct test_array test_array = { 8 };

static unsigned long duration;

/* read-side C.S. duration, in loops */
static unsigned long rduration;

/* write-side C.S. duration, in loops */
static unsigned long wduration;

static inline void loop_sleep(unsigned long loops)
{
	while (loops-- != 0)
		caa_cpu_relax();
}

static int verbose_mode;

#define printf_verbose(fmt, args...)		\
	do {					\
		if (verbose_mode)		\
			printf(fmt, args);	\
	} while (0)

static unsigned int cpu_affinities[NR_CPUS];
static unsigned int next_aff = 0;
static int use_affinity = 0;

pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;

static void set_affinity(void)
{
#ifdef HAVE_SCHED_SETAFFINITY
	cpu_set_t mask;
	int cpu, ret;
#endif /* HAVE_SCHED_SETAFFINITY */

	if (!use_affinity)
		return;

#ifdef HAVE_SCHED_SETAFFINITY
	ret = pthread_mutex_lock(&affinity_mutex);
	if (ret) {
		errno = ret;
		perror("Error in pthread mutex lock");
		abort();
	}
	cpu = cpu_affinities[next_aff++];
	ret = pthread_mutex_unlock(&affinity_mutex);
	if (ret) {
		errno = ret;
		perror("Error in pthread mutex unlock");
		abort();
	}
	CPU_ZERO(&mask);
	CPU_SET(cpu, &mask);
#if SCHED_SETAFFINITY_ARGS == 2
	sched_setaffinity(0, &mask);
#else
	sched_setaffinity(0, sizeof(mask), &mask);
#endif
#endif /* HAVE_SCHED_SETAFFINITY */
}

/*
 * returns 0 if test should end.
 */
static int test_duration_write(void)
{
	return !test_stop;
}

static int test_duration_read(void)
{
	return !test_stop;
}

static DEFINE_URCU_TLS(unsigned long long, nr_writes);
static DEFINE_URCU_TLS(unsigned long long, nr_reads);

static
unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
static
unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;

static unsigned int nr_readers;
static unsigned int nr_writers;

static void urcu_mutex_lock(pthread_mutex_t *lock)
{
	int ret;

	ret = pthread_mutex_lock(lock);
	if (ret) {
		errno = ret;
		perror("Error in pthread mutex lock");
		abort();
	}
}

static void urcu_mutex_unlock(pthread_mutex_t *lock)
{
	int ret;

	ret = pthread_mutex_unlock(lock);
	if (ret) {
		errno = ret;
		perror("Error in pthread mutex unlock");
		abort();
	}
}

static
void *thr_reader(void *data)
{
	unsigned long tidx = (unsigned long)data;

	printf_verbose("thread_begin %s, tid %lu\n",
			"reader", urcu_get_thread_id());

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		int v;

		urcu_mutex_lock(&per_thread_lock[tidx].lock);
		v = test_array.a;
		assert(v == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		urcu_mutex_unlock(&per_thread_lock[tidx].lock);
		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
	printf_verbose("thread_end %s, tid %lu\n",
			"reader", urcu_get_thread_id());
	return ((void*)1);

}

static
void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;
	long tidx;

	printf_verbose("thread_begin %s, tid %lu\n",
			"writer", urcu_get_thread_id());

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		for (tidx = 0; tidx < (long)nr_readers; tidx++) {
			urcu_mutex_lock(&per_thread_lock[tidx].lock);
		}
		test_array.a = 0;
		test_array.a = 8;
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
			urcu_mutex_unlock(&per_thread_lock[tidx].lock);
		}
		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	printf_verbose("thread_end %s, tid %lu\n",
			"writer", urcu_get_thread_id());
	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
	return ((void*)2);
}

static
void show_usage(char **argv)
{
	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
		argv[0]);
	printf("OPTIONS:\n");
	printf("	[-d delay] (writer period (us))\n");
	printf("	[-c duration] (reader C.S. duration (in loops))\n");
	printf("	[-e duration] (writer C.S. duration (in loops))\n");
	printf("	[-v] (verbose output)\n");
	printf("	[-a cpu#] [-a cpu#]... (affinity)\n");
	printf("\n");
}

int main(int argc, char **argv)
{
	int err;
	pthread_t *tid_reader, *tid_writer;
	void *tret;
	unsigned long long tot_reads = 0, tot_writes = 0;
	int i, a;
	unsigned int i_thr;

	if (argc < 4) {
		show_usage(argv);
		return -1;
	}
	cmm_smp_mb();

	err = sscanf(argv[1], "%u", &nr_readers);
	if (err != 1) {
		show_usage(argv);
		return -1;
	}

	err = sscanf(argv[2], "%u", &nr_writers);
	if (err != 1) {
		show_usage(argv);
		return -1;
	}

	err = sscanf(argv[3], "%lu", &duration);
	if (err != 1) {
		show_usage(argv);
		return -1;
	}

	for (i = 4; i < argc; i++) {
		if (argv[i][0] != '-')
			continue;
		switch (argv[i][1]) {
		case 'a':
			if (argc < i + 2) {
				show_usage(argv);
				return -1;
			}
			a = atoi(argv[++i]);
			cpu_affinities[next_aff++] = a;
			use_affinity = 1;
			printf_verbose("Adding CPU %d affinity\n", a);
			break;
		case 'c':
			if (argc < i + 2) {
				show_usage(argv);
				return -1;
			}
			rduration = atol(argv[++i]);
			break;
		case 'd':
			if (argc < i + 2) {
				show_usage(argv);
				return -1;
			}
			wdelay = atol(argv[++i]);
			break;
		case 'e':
			if (argc < i + 2) {
				show_usage(argv);
				return -1;
			}
			wduration = atol(argv[++i]);
			break;
		case 'v':
			verbose_mode = 1;
			break;
		}
	}

	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
		duration, nr_readers, nr_writers);
	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	printf_verbose("Reader duration : %lu loops.\n", rduration);
	printf_verbose("thread %-6s, tid %lu\n",
			"main", urcu_get_thread_id());

	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
	per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
		pthread_mutex_init(&per_thread_lock[i_thr].lock, NULL);
	}

	next_aff = 0;

	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
		err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
				     (void *)(long)i_thr);
		if (err != 0)
			exit(1);
	}
	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
		err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
				     (void *)(long)i_thr);
		if (err != 0)
			exit(1);
	}

	cmm_smp_mb();

	test_go = 1;

	sleep(duration);

	test_stop = 1;

	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
		err = pthread_join(tid_reader[i_thr], &tret);
		if (err != 0)
			exit(1);
		tot_reads += tot_nr_reads[i_thr];
	}
	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
		err = pthread_join(tid_writer[i_thr], &tret);
		if (err != 0)
			exit(1);
		tot_writes += tot_nr_writes[i_thr];
	}

	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	       tot_writes);
	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
		"nr_writers %3u "
		"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
		argv[0], duration, nr_readers, rduration, wduration,
		nr_writers, wdelay, tot_reads, tot_writes,
		tot_reads + tot_writes);

	free(tid_reader);
	free(tid_writer);
	free(tot_nr_reads);
	free(tot_nr_writes);
	free(per_thread_lock);
	return 0;
}
Commit	Line	Data
0ee8bb0a MD	1	/*
	2	* test_urcu.c
	3	*
	4	* Userspace RCU library - test program
	5	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
0ee8bb0a MD	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	21	*/
	22
	23	#include <stdio.h>
	24	#include <pthread.h>
	25	#include <stdlib.h>
	26	#include <string.h>
	27	#include <sys/types.h>
	28	#include <sys/wait.h>
	29	#include <unistd.h>
	30	#include <stdio.h>
	31	#include <assert.h>
94b343fd	32	#include <errno.h>
0ee8bb0a	33
ec4e58a3	34	#include <urcu/arch.h>
bd252a04	35	#include <urcu/tls-compat.h>
2953b501	36	#include "cpuset.h"
94df6318	37	#include "thread-id.h"
65fcc7e9	38
2a7ac59d MD	39	/* hardcoded number of CPUs */
	40	#define NR_CPUS 16384
	41
0ee8bb0a MD	42	#ifndef DYNAMIC_LINK_TEST
0ee8bb0a MD	43	#define _LGPL_SOURCE
0ee8bb0a	44	#endif
ec4e58a3	45	#include <urcu.h>
0ee8bb0a MD	46
	47	struct test_array {
	48	int a;
	49	};
	50
	51	struct per_thread_lock {
	52	pthread_mutex_t lock;
06f22bdb	53	} __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */
0ee8bb0a MD	54
	55	static struct per_thread_lock *per_thread_lock;
	56
78efb485	57	static volatile int test_go, test_stop;
0ee8bb0a	58
9e31d0f0	59	static unsigned long wdelay;
0ee8bb0a	60
2b4e4125	61	static volatile struct test_array test_array = { 8 };
0ee8bb0a MD	62
0ee8bb0a MD	63	static unsigned long duration;
0ee8bb0a	64
daddf5b0	65	/* read-side C.S. duration, in loops */
8b632bab MD	66	static unsigned long rduration;
8b632bab MD	67
31b598e0 MD	68	/* write-side C.S. duration, in loops */
	69	static unsigned long wduration;
	70
ab0aacbe	71	static inline void loop_sleep(unsigned long loops)
daddf5b0	72	{
ab0aacbe	73	while (loops-- != 0)
06f22bdb	74	caa_cpu_relax();
daddf5b0 MD	75	}
daddf5b0 MD	76
4bad7d45 MD	77	static int verbose_mode;
	78
	79	#define printf_verbose(fmt, args...) \
	80	do { \
	81	if (verbose_mode) \
	82	printf(fmt, args); \
	83	} while (0)
	84
2a7ac59d MD	85	static unsigned int cpu_affinities[NR_CPUS];
	86	static unsigned int next_aff = 0;
	87	static int use_affinity = 0;
	88
6af882ba MD	89	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	90
2a7ac59d MD	91	static void set_affinity(void)
2a7ac59d MD	92	{
1a93fffc	93	#ifdef HAVE_SCHED_SETAFFINITY
2a7ac59d	94	cpu_set_t mask;
95bc7fb9 MD	95	int cpu, ret;
95bc7fb9 MD	96	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	97
	98	if (!use_affinity)
	99	return;
	100
1a93fffc	101	#ifdef HAVE_SCHED_SETAFFINITY
6af882ba MD	102	ret = pthread_mutex_lock(&affinity_mutex);
6af882ba MD	103	if (ret) {
f597a8b9	104	errno = ret;
6af882ba	105	perror("Error in pthread mutex lock");
f597a8b9	106	abort();
6af882ba	107	}
2a7ac59d	108	cpu = cpu_affinities[next_aff++];
6af882ba MD	109	ret = pthread_mutex_unlock(&affinity_mutex);
6af882ba MD	110	if (ret) {
f597a8b9	111	errno = ret;
6af882ba	112	perror("Error in pthread mutex unlock");
f597a8b9	113	abort();
6af882ba	114	}
2a7ac59d MD	115	CPU_ZERO(&mask);
2a7ac59d MD	116	CPU_SET(cpu, &mask);
d8540fc5 PA	117	#if SCHED_SETAFFINITY_ARGS == 2
	118	sched_setaffinity(0, &mask);
	119	#else
2a7ac59d	120	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	121	#endif
d8540fc5 PA	122	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	123	}
2a7ac59d MD	124
0ee8bb0a MD	125	/*
	126	* returns 0 if test should end.
	127	*/
	128	static int test_duration_write(void)
	129	{
78efb485	130	return !test_stop;
0ee8bb0a MD	131	}
	132
	133	static int test_duration_read(void)
	134	{
78efb485	135	return !test_stop;
0ee8bb0a MD	136	}
0ee8bb0a MD	137
bd252a04 MD	138	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	139	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
0ee8bb0a	140
55271c13	141	static
06f22bdb	142	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13	143	static
06f22bdb	144	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
0ee8bb0a MD	145
	146	static unsigned int nr_readers;
	147	static unsigned int nr_writers;
	148
f597a8b9	149	static void urcu_mutex_lock(pthread_mutex_t *lock)
0ee8bb0a MD	150	{
0ee8bb0a MD	151	int ret;
f597a8b9 MD	152
f597a8b9 MD	153	ret = pthread_mutex_lock(lock);
0ee8bb0a	154	if (ret) {
f597a8b9	155	errno = ret;
0ee8bb0a	156	perror("Error in pthread mutex lock");
f597a8b9	157	abort();
0ee8bb0a MD	158	}
	159	}
	160
f597a8b9	161	static void urcu_mutex_unlock(pthread_mutex_t *lock)
0ee8bb0a MD	162	{
	163	int ret;
	164
f597a8b9	165	ret = pthread_mutex_unlock(lock);
0ee8bb0a	166	if (ret) {
f597a8b9	167	errno = ret;
0ee8bb0a	168	perror("Error in pthread mutex unlock");
f597a8b9	169	abort();
0ee8bb0a MD	170	}
	171	}
	172
3b4d3084	173	static
0ee8bb0a MD	174	void thr_reader(void data)
	175	{
	176	unsigned long tidx = (unsigned long)data;
	177
94df6318 MD	178	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	179	"reader", urcu_get_thread_id());
0ee8bb0a	180
2a7ac59d MD	181	set_affinity();
2a7ac59d MD	182
0ee8bb0a MD	183	while (!test_go)
	184	{
	185	}
	186
	187	for (;;) {
19d0e7ef MD	188	int v;
19d0e7ef MD	189
f597a8b9	190	urcu_mutex_lock(&per_thread_lock[tidx].lock);
19d0e7ef MD	191	v = test_array.a;
19d0e7ef MD	192	assert(v == 8);
a0b7f7ea	193	if (caa_unlikely(rduration))
daddf5b0	194	loop_sleep(rduration);
f597a8b9	195	urcu_mutex_unlock(&per_thread_lock[tidx].lock);
bd252a04	196	URCU_TLS(nr_reads)++;
a0b7f7ea	197	if (caa_unlikely(!test_duration_read()))
0ee8bb0a MD	198	break;
	199	}
	200
bd252a04	201	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
94df6318 MD	202	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	203	"reader", urcu_get_thread_id());
0ee8bb0a MD	204	return ((void*)1);
	205
	206	}
	207
3b4d3084	208	static
0ee8bb0a MD	209	void thr_writer(void data)
	210	{
	211	unsigned long wtidx = (unsigned long)data;
	212	long tidx;
	213
94df6318 MD	214	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	215	"writer", urcu_get_thread_id());
0ee8bb0a	216
2a7ac59d MD	217	set_affinity();
2a7ac59d MD	218
0ee8bb0a MD	219	while (!test_go)
	220	{
	221	}
5481ddb3	222	cmm_smp_mb();
0ee8bb0a MD	223
0ee8bb0a MD	224	for (;;) {
d266df35	225	for (tidx = 0; tidx < (long)nr_readers; tidx++) {
f597a8b9	226	urcu_mutex_lock(&per_thread_lock[tidx].lock);
0ee8bb0a	227	}
2b4e4125	228	test_array.a = 0;
0ee8bb0a	229	test_array.a = 8;
a0b7f7ea	230	if (caa_unlikely(wduration))
31b598e0	231	loop_sleep(wduration);
f120cc10	232	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
f597a8b9	233	urcu_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a	234	}
bd252a04	235	URCU_TLS(nr_writes)++;
a0b7f7ea	236	if (caa_unlikely(!test_duration_write()))
0ee8bb0a	237	break;
a0b7f7ea	238	if (caa_unlikely(wdelay))
9e31d0f0	239	loop_sleep(wdelay);
0ee8bb0a MD	240	}
0ee8bb0a MD	241
94df6318 MD	242	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	243	"writer", urcu_get_thread_id());
bd252a04	244	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
0ee8bb0a MD	245	return ((void*)2);
	246	}
	247
3b4d3084	248	static
5eedd745	249	void show_usage(char **argv)
0ee8bb0a	250	{
06637138 MD	251	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	252	argv[0]);
	253	printf("OPTIONS:\n");
06637138 MD	254	printf(" [-d delay] (writer period (us))\n");
	255	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	256	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	257	printf(" [-v] (verbose output)\n");
	258	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
0ee8bb0a MD	259	printf("\n");
	260	}
	261
	262	int main(int argc, char **argv)
	263	{
	264	int err;
	265	pthread_t tid_reader, tid_writer;
	266	void *tret;
0ee8bb0a	267	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	268	int i, a;
83e334d0	269	unsigned int i_thr;
0ee8bb0a MD	270
0ee8bb0a MD	271	if (argc < 4) {
5eedd745	272	show_usage(argv);
0ee8bb0a MD	273	return -1;
0ee8bb0a MD	274	}
5481ddb3	275	cmm_smp_mb();
0ee8bb0a MD	276
	277	err = sscanf(argv[1], "%u", &nr_readers);
	278	if (err != 1) {
5eedd745	279	show_usage(argv);
0ee8bb0a MD	280	return -1;
	281	}
	282
	283	err = sscanf(argv[2], "%u", &nr_writers);
	284	if (err != 1) {
5eedd745	285	show_usage(argv);
0ee8bb0a MD	286	return -1;
0ee8bb0a MD	287	}
83e334d0	288
0ee8bb0a MD	289	err = sscanf(argv[3], "%lu", &duration);
0ee8bb0a MD	290	if (err != 1) {
5eedd745	291	show_usage(argv);
0ee8bb0a MD	292	return -1;
	293	}
	294
	295	for (i = 4; i < argc; i++) {
	296	if (argv[i][0] != '-')
	297	continue;
	298	switch (argv[i][1]) {
9e97e478 MD	299	case 'a':
9e97e478 MD	300	if (argc < i + 2) {
5eedd745	301	show_usage(argv);
9e97e478 MD	302	return -1;
	303	}
	304	a = atoi(argv[++i]);
2a7ac59d	305	cpu_affinities[next_aff++] = a;
9e97e478	306	use_affinity = 1;
4bad7d45	307	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	308	break;
8b632bab MD	309	case 'c':
8b632bab MD	310	if (argc < i + 2) {
5eedd745	311	show_usage(argv);
8b632bab MD	312	return -1;
8b632bab MD	313	}
9e31d0f0	314	rduration = atol(argv[++i]);
8b632bab	315	break;
0ee8bb0a MD	316	case 'd':
0ee8bb0a MD	317	if (argc < i + 2) {
5eedd745	318	show_usage(argv);
0ee8bb0a MD	319	return -1;
0ee8bb0a MD	320	}
9e31d0f0	321	wdelay = atol(argv[++i]);
0ee8bb0a	322	break;
31b598e0 MD	323	case 'e':
31b598e0 MD	324	if (argc < i + 2) {
5eedd745	325	show_usage(argv);
31b598e0 MD	326	return -1;
	327	}
	328	wduration = atol(argv[++i]);
	329	break;
4bad7d45 MD	330	case 'v':
	331	verbose_mode = 1;
	332	break;
0ee8bb0a MD	333	}
	334	}
	335
4bad7d45	336	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a	337	duration, nr_readers, nr_writers);
9e31d0f0	338	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45	339	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	340	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	341	"main", urcu_get_thread_id());
0ee8bb0a	342
9aa14175 MD	343	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	344	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	345	tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
	346	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
	347	per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
83e334d0 MJ	348	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	349	pthread_mutex_init(&per_thread_lock[i_thr].lock, NULL);
dee09338	350	}
0ee8bb0a	351
2a7ac59d MD	352	next_aff = 0;
2a7ac59d MD	353
83e334d0 MJ	354	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	355	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	356	(void *)(long)i_thr);
0ee8bb0a MD	357	if (err != 0)
	358	exit(1);
	359	}
83e334d0 MJ	360	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	361	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	362	(void *)(long)i_thr);
0ee8bb0a MD	363	if (err != 0)
	364	exit(1);
	365	}
	366
5481ddb3	367	cmm_smp_mb();
0ee8bb0a	368
78efb485 MD	369	test_go = 1;
	370
	371	sleep(duration);
	372
	373	test_stop = 1;
	374
83e334d0 MJ	375	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	376	err = pthread_join(tid_reader[i_thr], &tret);
0ee8bb0a MD	377	if (err != 0)
0ee8bb0a MD	378	exit(1);
83e334d0	379	tot_reads += tot_nr_reads[i_thr];
0ee8bb0a	380	}
83e334d0 MJ	381	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	382	err = pthread_join(tid_writer[i_thr], &tret);
0ee8bb0a MD	383	if (err != 0)
0ee8bb0a MD	384	exit(1);
83e334d0	385	tot_writes += tot_nr_writes[i_thr];
0ee8bb0a	386	}
4bad7d45 MD	387
4bad7d45 MD	388	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a	389	tot_writes);
a50a7b43	390	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	391	"nr_writers %3u "
9e31d0f0	392	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	393	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	394	nr_writers, wdelay, tot_reads, tot_writes,
	395	tot_reads + tot_writes);
	396
0ee8bb0a MD	397	free(tid_reader);
0ee8bb0a MD	398	free(tid_writer);
0ee8bb0a MD	399	free(tot_nr_reads);
	400	free(tot_nr_writes);
	401	free(per_thread_lock);
	402	return 0;
	403	}