[urcu.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 "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)
{
#if HAVE_SCHED_SETAFFINITY
	cpu_set_t mask;
	int cpu, ret;
#endif /* HAVE_SCHED_SETAFFINITY */

	if (!use_affinity)
		return;

#if 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);
	sched_setaffinity(0, sizeof(mask), &mask);
#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(int argc, 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(argc, argv);
		return -1;
	}
	cmm_smp_mb();

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

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

	err = sscanf(argv[3], "%lu", &duration);
	if (err != 1) {
		show_usage(argc, 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(argc, 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(argc, argv);
				return -1;
			}
			rduration = atol(argv[++i]);
			break;
		case 'd':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			wdelay = atol(argv[++i]);
			break;
		case 'e':
			if (argc < i + 2) {
				show_usage(argc, 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>
94df6318	36	#include "thread-id.h"
65fcc7e9	37
2a7ac59d MD	38	/* hardcoded number of CPUs */
	39	#define NR_CPUS 16384
	40
0ee8bb0a MD	41	#ifndef DYNAMIC_LINK_TEST
0ee8bb0a MD	42	#define _LGPL_SOURCE
0ee8bb0a	43	#endif
ec4e58a3	44	#include <urcu.h>
0ee8bb0a MD	45
	46	struct test_array {
	47	int a;
	48	};
	49
	50	struct per_thread_lock {
	51	pthread_mutex_t lock;
06f22bdb	52	} __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */
0ee8bb0a MD	53
	54	static struct per_thread_lock *per_thread_lock;
	55
78efb485	56	static volatile int test_go, test_stop;
0ee8bb0a	57
9e31d0f0	58	static unsigned long wdelay;
0ee8bb0a	59
2b4e4125	60	static volatile struct test_array test_array = { 8 };
0ee8bb0a MD	61
0ee8bb0a MD	62	static unsigned long duration;
0ee8bb0a	63
daddf5b0	64	/* read-side C.S. duration, in loops */
8b632bab MD	65	static unsigned long rduration;
8b632bab MD	66
31b598e0 MD	67	/* write-side C.S. duration, in loops */
	68	static unsigned long wduration;
	69
ab0aacbe	70	static inline void loop_sleep(unsigned long loops)
daddf5b0	71	{
ab0aacbe	72	while (loops-- != 0)
06f22bdb	73	caa_cpu_relax();
daddf5b0 MD	74	}
daddf5b0 MD	75
4bad7d45 MD	76	static int verbose_mode;
	77
	78	#define printf_verbose(fmt, args...) \
	79	do { \
	80	if (verbose_mode) \
	81	printf(fmt, args); \
	82	} while (0)
	83
2a7ac59d MD	84	static unsigned int cpu_affinities[NR_CPUS];
	85	static unsigned int next_aff = 0;
	86	static int use_affinity = 0;
	87
6af882ba MD	88	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	89
2a7ac59d MD	90	static void set_affinity(void)
2a7ac59d MD	91	{
95bc7fb9	92	#if HAVE_SCHED_SETAFFINITY
2a7ac59d	93	cpu_set_t mask;
95bc7fb9 MD	94	int cpu, ret;
95bc7fb9 MD	95	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	96
	97	if (!use_affinity)
	98	return;
	99
d8540fc5	100	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	101	ret = pthread_mutex_lock(&affinity_mutex);
6af882ba MD	102	if (ret) {
f597a8b9	103	errno = ret;
6af882ba	104	perror("Error in pthread mutex lock");
f597a8b9	105	abort();
6af882ba	106	}
2a7ac59d	107	cpu = cpu_affinities[next_aff++];
6af882ba MD	108	ret = pthread_mutex_unlock(&affinity_mutex);
6af882ba MD	109	if (ret) {
f597a8b9	110	errno = ret;
6af882ba	111	perror("Error in pthread mutex unlock");
f597a8b9	112	abort();
6af882ba	113	}
2a7ac59d MD	114	CPU_ZERO(&mask);
	115	CPU_SET(cpu, &mask);
	116	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5	117	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	118	}
2a7ac59d MD	119
0ee8bb0a MD	120	/*
	121	* returns 0 if test should end.
	122	*/
	123	static int test_duration_write(void)
	124	{
78efb485	125	return !test_stop;
0ee8bb0a MD	126	}
	127
	128	static int test_duration_read(void)
	129	{
78efb485	130	return !test_stop;
0ee8bb0a MD	131	}
0ee8bb0a MD	132
bd252a04 MD	133	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	134	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
0ee8bb0a	135
55271c13	136	static
06f22bdb	137	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13	138	static
06f22bdb	139	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
0ee8bb0a MD	140
	141	static unsigned int nr_readers;
	142	static unsigned int nr_writers;
	143
f597a8b9	144	static void urcu_mutex_lock(pthread_mutex_t *lock)
0ee8bb0a MD	145	{
0ee8bb0a MD	146	int ret;
f597a8b9 MD	147
f597a8b9 MD	148	ret = pthread_mutex_lock(lock);
0ee8bb0a	149	if (ret) {
f597a8b9	150	errno = ret;
0ee8bb0a	151	perror("Error in pthread mutex lock");
f597a8b9	152	abort();
0ee8bb0a MD	153	}
	154	}
	155
f597a8b9	156	static void urcu_mutex_unlock(pthread_mutex_t *lock)
0ee8bb0a MD	157	{
	158	int ret;
	159
f597a8b9	160	ret = pthread_mutex_unlock(lock);
0ee8bb0a	161	if (ret) {
f597a8b9	162	errno = ret;
0ee8bb0a	163	perror("Error in pthread mutex unlock");
f597a8b9	164	abort();
0ee8bb0a MD	165	}
	166	}
	167
61c3fb60	168	static
0ee8bb0a MD	169	void thr_reader(void data)
	170	{
	171	unsigned long tidx = (unsigned long)data;
	172
94df6318 MD	173	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	174	"reader", urcu_get_thread_id());
0ee8bb0a	175
2a7ac59d MD	176	set_affinity();
2a7ac59d MD	177
0ee8bb0a MD	178	while (!test_go)
	179	{
	180	}
	181
	182	for (;;) {
19d0e7ef MD	183	int v;
19d0e7ef MD	184
f597a8b9	185	urcu_mutex_lock(&per_thread_lock[tidx].lock);
19d0e7ef MD	186	v = test_array.a;
19d0e7ef MD	187	assert(v == 8);
a0b7f7ea	188	if (caa_unlikely(rduration))
daddf5b0	189	loop_sleep(rduration);
f597a8b9	190	urcu_mutex_unlock(&per_thread_lock[tidx].lock);
bd252a04	191	URCU_TLS(nr_reads)++;
a0b7f7ea	192	if (caa_unlikely(!test_duration_read()))
0ee8bb0a MD	193	break;
	194	}
	195
bd252a04	196	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
94df6318 MD	197	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	198	"reader", urcu_get_thread_id());
0ee8bb0a MD	199	return ((void*)1);
	200
	201	}
	202
61c3fb60	203	static
0ee8bb0a MD	204	void thr_writer(void data)
	205	{
	206	unsigned long wtidx = (unsigned long)data;
	207	long tidx;
	208
94df6318 MD	209	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	210	"writer", urcu_get_thread_id());
0ee8bb0a	211
2a7ac59d MD	212	set_affinity();
2a7ac59d MD	213
0ee8bb0a MD	214	while (!test_go)
	215	{
	216	}
5481ddb3	217	cmm_smp_mb();
0ee8bb0a MD	218
0ee8bb0a MD	219	for (;;) {
d266df35	220	for (tidx = 0; tidx < (long)nr_readers; tidx++) {
f597a8b9	221	urcu_mutex_lock(&per_thread_lock[tidx].lock);
0ee8bb0a	222	}
2b4e4125	223	test_array.a = 0;
0ee8bb0a	224	test_array.a = 8;
a0b7f7ea	225	if (caa_unlikely(wduration))
31b598e0	226	loop_sleep(wduration);
f120cc10	227	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
f597a8b9	228	urcu_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a	229	}
bd252a04	230	URCU_TLS(nr_writes)++;
a0b7f7ea	231	if (caa_unlikely(!test_duration_write()))
0ee8bb0a	232	break;
a0b7f7ea	233	if (caa_unlikely(wdelay))
9e31d0f0	234	loop_sleep(wdelay);
0ee8bb0a MD	235	}
0ee8bb0a MD	236
94df6318 MD	237	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	238	"writer", urcu_get_thread_id());
bd252a04	239	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
0ee8bb0a MD	240	return ((void*)2);
	241	}
	242
61c3fb60	243	static
0ee8bb0a MD	244	void show_usage(int argc, char **argv)
0ee8bb0a MD	245	{
06637138 MD	246	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	247	argv[0]);
	248	printf("OPTIONS:\n");
06637138 MD	249	printf(" [-d delay] (writer period (us))\n");
	250	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	251	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	252	printf(" [-v] (verbose output)\n");
	253	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
0ee8bb0a MD	254	printf("\n");
	255	}
	256
	257	int main(int argc, char **argv)
	258	{
	259	int err;
	260	pthread_t tid_reader, tid_writer;
	261	void *tret;
0ee8bb0a	262	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	263	int i, a;
83e334d0	264	unsigned int i_thr;
0ee8bb0a MD	265
	266	if (argc < 4) {
	267	show_usage(argc, argv);
	268	return -1;
	269	}
5481ddb3	270	cmm_smp_mb();
0ee8bb0a MD	271
	272	err = sscanf(argv[1], "%u", &nr_readers);
	273	if (err != 1) {
	274	show_usage(argc, argv);
	275	return -1;
	276	}
	277
	278	err = sscanf(argv[2], "%u", &nr_writers);
	279	if (err != 1) {
	280	show_usage(argc, argv);
	281	return -1;
	282	}
83e334d0	283
0ee8bb0a MD	284	err = sscanf(argv[3], "%lu", &duration);
	285	if (err != 1) {
	286	show_usage(argc, argv);
	287	return -1;
	288	}
	289
	290	for (i = 4; i < argc; i++) {
	291	if (argv[i][0] != '-')
	292	continue;
	293	switch (argv[i][1]) {
9e97e478 MD	294	case 'a':
	295	if (argc < i + 2) {
	296	show_usage(argc, argv);
	297	return -1;
	298	}
	299	a = atoi(argv[++i]);
2a7ac59d	300	cpu_affinities[next_aff++] = a;
9e97e478	301	use_affinity = 1;
4bad7d45	302	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	303	break;
8b632bab MD	304	case 'c':
	305	if (argc < i + 2) {
	306	show_usage(argc, argv);
	307	return -1;
	308	}
9e31d0f0	309	rduration = atol(argv[++i]);
8b632bab	310	break;
0ee8bb0a MD	311	case 'd':
	312	if (argc < i + 2) {
	313	show_usage(argc, argv);
	314	return -1;
	315	}
9e31d0f0	316	wdelay = atol(argv[++i]);
0ee8bb0a	317	break;
31b598e0 MD	318	case 'e':
	319	if (argc < i + 2) {
	320	show_usage(argc, argv);
	321	return -1;
	322	}
	323	wduration = atol(argv[++i]);
	324	break;
4bad7d45 MD	325	case 'v':
	326	verbose_mode = 1;
	327	break;
0ee8bb0a MD	328	}
	329	}
	330
4bad7d45	331	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a	332	duration, nr_readers, nr_writers);
9e31d0f0	333	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45	334	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	335	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	336	"main", urcu_get_thread_id());
0ee8bb0a	337
9aa14175 MD	338	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	339	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	340	tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
	341	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
	342	per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
83e334d0 MJ	343	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	344	pthread_mutex_init(&per_thread_lock[i_thr].lock, NULL);
dee09338	345	}
0ee8bb0a	346
2a7ac59d MD	347	next_aff = 0;
2a7ac59d MD	348
83e334d0 MJ	349	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	350	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	351	(void *)(long)i_thr);
0ee8bb0a MD	352	if (err != 0)
	353	exit(1);
	354	}
83e334d0 MJ	355	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	356	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	357	(void *)(long)i_thr);
0ee8bb0a MD	358	if (err != 0)
	359	exit(1);
	360	}
	361
5481ddb3	362	cmm_smp_mb();
0ee8bb0a	363
78efb485 MD	364	test_go = 1;
	365
	366	sleep(duration);
	367
	368	test_stop = 1;
	369
83e334d0 MJ	370	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	371	err = pthread_join(tid_reader[i_thr], &tret);
0ee8bb0a MD	372	if (err != 0)
0ee8bb0a MD	373	exit(1);
83e334d0	374	tot_reads += tot_nr_reads[i_thr];
0ee8bb0a	375	}
83e334d0 MJ	376	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	377	err = pthread_join(tid_writer[i_thr], &tret);
0ee8bb0a MD	378	if (err != 0)
0ee8bb0a MD	379	exit(1);
83e334d0	380	tot_writes += tot_nr_writes[i_thr];
0ee8bb0a	381	}
4bad7d45 MD	382
4bad7d45 MD	383	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a	384	tot_writes);
a50a7b43	385	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	386	"nr_writers %3u "
9e31d0f0	387	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	388	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	389	nr_writers, wdelay, tot_reads, tot_writes,
	390	tot_reads + tot_writes);
	391
0ee8bb0a MD	392	free(tid_reader);
0ee8bb0a MD	393	free(tid_writer);
0ee8bb0a MD	394	free(tot_nr_reads);
	395	free(tot_nr_writes);
	396	free(per_thread_lock);
	397	return 0;
	398	}