[urcu.git] / tests / benchmark / test_perthreadlock.c

// SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later

/*
 * Userspace RCU library - test program
 */

#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 <errno.h>

#include <urcu/arch.h>
#include <urcu/assert.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 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);
	sched_setaffinity(0, sizeof(mask), &mask);
#endif /* HAVE_SCHED_SETAFFINITY */
}

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();

	wait_until_go();

	for (;;) {
		int v;

		urcu_mutex_lock(&per_thread_lock[tidx].lock);
		v = test_array.a;
		urcu_posix_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();

	wait_until_go();

	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);
	}

	test_for(duration);

	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
ce29b371 MJ	1	// SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	2	//
	3	// SPDX-License-Identifier: GPL-2.0-or-later
	4
0ee8bb0a	5	/*
0ee8bb0a	6	* Userspace RCU library - test program
0ee8bb0a MD	7	*/
	8
	9	#include <stdio.h>
	10	#include <pthread.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <sys/types.h>
	14	#include <sys/wait.h>
	15	#include <unistd.h>
	16	#include <stdio.h>
94b343fd	17	#include <errno.h>
0ee8bb0a	18
ec4e58a3	19	#include <urcu/arch.h>
01477510	20	#include <urcu/assert.h>
bd252a04	21	#include <urcu/tls-compat.h>
94df6318	22	#include "thread-id.h"
65fcc7e9	23
2a7ac59d MD	24	/* hardcoded number of CPUs */
	25	#define NR_CPUS 16384
	26
0ee8bb0a MD	27	#ifndef DYNAMIC_LINK_TEST
0ee8bb0a MD	28	#define _LGPL_SOURCE
0ee8bb0a	29	#endif
ec4e58a3	30	#include <urcu.h>
0ee8bb0a MD	31
	32	struct test_array {
	33	int a;
	34	};
	35
	36	struct per_thread_lock {
	37	pthread_mutex_t lock;
06f22bdb	38	} __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */
0ee8bb0a MD	39
	40	static struct per_thread_lock *per_thread_lock;
	41
9e31d0f0	42	static unsigned long wdelay;
0ee8bb0a	43
2b4e4125	44	static volatile struct test_array test_array = { 8 };
0ee8bb0a MD	45
0ee8bb0a MD	46	static unsigned long duration;
0ee8bb0a	47
daddf5b0	48	/* read-side C.S. duration, in loops */
8b632bab MD	49	static unsigned long rduration;
8b632bab MD	50
31b598e0 MD	51	/* write-side C.S. duration, in loops */
	52	static unsigned long wduration;
	53
ab0aacbe	54	static inline void loop_sleep(unsigned long loops)
daddf5b0	55	{
ab0aacbe	56	while (loops-- != 0)
06f22bdb	57	caa_cpu_relax();
daddf5b0 MD	58	}
daddf5b0 MD	59
4bad7d45 MD	60	static int verbose_mode;
	61
	62	#define printf_verbose(fmt, args...) \
	63	do { \
	64	if (verbose_mode) \
	65	printf(fmt, args); \
	66	} while (0)
	67
2a7ac59d MD	68	static unsigned int cpu_affinities[NR_CPUS];
	69	static unsigned int next_aff = 0;
	70	static int use_affinity = 0;
	71
6af882ba MD	72	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	73
2a7ac59d MD	74	static void set_affinity(void)
2a7ac59d MD	75	{
2388c075	76	#ifdef HAVE_SCHED_SETAFFINITY
2a7ac59d	77	cpu_set_t mask;
95bc7fb9 MD	78	int cpu, ret;
95bc7fb9 MD	79	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	80
	81	if (!use_affinity)
	82	return;
	83
2388c075	84	#ifdef HAVE_SCHED_SETAFFINITY
6af882ba MD	85	ret = pthread_mutex_lock(&affinity_mutex);
6af882ba MD	86	if (ret) {
f597a8b9	87	errno = ret;
6af882ba	88	perror("Error in pthread mutex lock");
f597a8b9	89	abort();
6af882ba	90	}
2a7ac59d	91	cpu = cpu_affinities[next_aff++];
6af882ba MD	92	ret = pthread_mutex_unlock(&affinity_mutex);
6af882ba MD	93	if (ret) {
f597a8b9	94	errno = ret;
6af882ba	95	perror("Error in pthread mutex unlock");
f597a8b9	96	abort();
6af882ba	97	}
2a7ac59d MD	98	CPU_ZERO(&mask);
	99	CPU_SET(cpu, &mask);
	100	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5	101	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	102	}
2a7ac59d MD	103
bd252a04 MD	104	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	105	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
0ee8bb0a	106
55271c13	107	static
06f22bdb	108	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13	109	static
06f22bdb	110	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
0ee8bb0a MD	111
	112	static unsigned int nr_readers;
	113	static unsigned int nr_writers;
	114
f597a8b9	115	static void urcu_mutex_lock(pthread_mutex_t *lock)
0ee8bb0a MD	116	{
0ee8bb0a MD	117	int ret;
f597a8b9 MD	118
f597a8b9 MD	119	ret = pthread_mutex_lock(lock);
0ee8bb0a	120	if (ret) {
f597a8b9	121	errno = ret;
0ee8bb0a	122	perror("Error in pthread mutex lock");
f597a8b9	123	abort();
0ee8bb0a MD	124	}
	125	}
	126
f597a8b9	127	static void urcu_mutex_unlock(pthread_mutex_t *lock)
0ee8bb0a MD	128	{
	129	int ret;
	130
f597a8b9	131	ret = pthread_mutex_unlock(lock);
0ee8bb0a	132	if (ret) {
f597a8b9	133	errno = ret;
0ee8bb0a	134	perror("Error in pthread mutex unlock");
f597a8b9	135	abort();
0ee8bb0a MD	136	}
	137	}
	138
61c3fb60	139	static
0ee8bb0a MD	140	void thr_reader(void data)
	141	{
	142	unsigned long tidx = (unsigned long)data;
	143
94df6318 MD	144	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	145	"reader", urcu_get_thread_id());
0ee8bb0a	146
2a7ac59d MD	147	set_affinity();
2a7ac59d MD	148
9e4e7ad1	149	wait_until_go();
0ee8bb0a MD	150
0ee8bb0a MD	151	for (;;) {
19d0e7ef MD	152	int v;
19d0e7ef MD	153
f597a8b9	154	urcu_mutex_lock(&per_thread_lock[tidx].lock);
19d0e7ef	155	v = test_array.a;
01477510	156	urcu_posix_assert(v == 8);
a0b7f7ea	157	if (caa_unlikely(rduration))
daddf5b0	158	loop_sleep(rduration);
f597a8b9	159	urcu_mutex_unlock(&per_thread_lock[tidx].lock);
bd252a04	160	URCU_TLS(nr_reads)++;
a0b7f7ea	161	if (caa_unlikely(!test_duration_read()))
0ee8bb0a MD	162	break;
	163	}
	164
bd252a04	165	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
94df6318 MD	166	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	167	"reader", urcu_get_thread_id());
0ee8bb0a MD	168	return ((void*)1);
	169
	170	}
	171
61c3fb60	172	static
0ee8bb0a MD	173	void thr_writer(void data)
	174	{
	175	unsigned long wtidx = (unsigned long)data;
	176	long tidx;
	177
94df6318 MD	178	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	179	"writer", urcu_get_thread_id());
0ee8bb0a	180
2a7ac59d MD	181	set_affinity();
2a7ac59d MD	182
9e4e7ad1	183	wait_until_go();
0ee8bb0a MD	184
0ee8bb0a MD	185	for (;;) {
d266df35	186	for (tidx = 0; tidx < (long)nr_readers; tidx++) {
f597a8b9	187	urcu_mutex_lock(&per_thread_lock[tidx].lock);
0ee8bb0a	188	}
2b4e4125	189	test_array.a = 0;
0ee8bb0a	190	test_array.a = 8;
a0b7f7ea	191	if (caa_unlikely(wduration))
31b598e0	192	loop_sleep(wduration);
f120cc10	193	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
f597a8b9	194	urcu_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a	195	}
bd252a04	196	URCU_TLS(nr_writes)++;
a0b7f7ea	197	if (caa_unlikely(!test_duration_write()))
0ee8bb0a	198	break;
a0b7f7ea	199	if (caa_unlikely(wdelay))
9e31d0f0	200	loop_sleep(wdelay);
0ee8bb0a MD	201	}
0ee8bb0a MD	202
94df6318 MD	203	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	204	"writer", urcu_get_thread_id());
bd252a04	205	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
0ee8bb0a MD	206	return ((void*)2);
	207	}
	208
61c3fb60	209	static
70469b43	210	void show_usage(char **argv)
0ee8bb0a	211	{
06637138 MD	212	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	213	argv[0]);
	214	printf("OPTIONS:\n");
06637138 MD	215	printf(" [-d delay] (writer period (us))\n");
	216	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	217	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	218	printf(" [-v] (verbose output)\n");
	219	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
0ee8bb0a MD	220	printf("\n");
	221	}
	222
	223	int main(int argc, char **argv)
	224	{
	225	int err;
	226	pthread_t tid_reader, tid_writer;
	227	void *tret;
0ee8bb0a	228	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	229	int i, a;
83e334d0	230	unsigned int i_thr;
0ee8bb0a MD	231
0ee8bb0a MD	232	if (argc < 4) {
70469b43	233	show_usage(argv);
0ee8bb0a MD	234	return -1;
0ee8bb0a MD	235	}
5481ddb3	236	cmm_smp_mb();
0ee8bb0a MD	237
	238	err = sscanf(argv[1], "%u", &nr_readers);
	239	if (err != 1) {
70469b43	240	show_usage(argv);
0ee8bb0a MD	241	return -1;
	242	}
	243
	244	err = sscanf(argv[2], "%u", &nr_writers);
	245	if (err != 1) {
70469b43	246	show_usage(argv);
0ee8bb0a MD	247	return -1;
0ee8bb0a MD	248	}
83e334d0	249
0ee8bb0a MD	250	err = sscanf(argv[3], "%lu", &duration);
0ee8bb0a MD	251	if (err != 1) {
70469b43	252	show_usage(argv);
0ee8bb0a MD	253	return -1;
	254	}
	255
	256	for (i = 4; i < argc; i++) {
	257	if (argv[i][0] != '-')
	258	continue;
	259	switch (argv[i][1]) {
9e97e478 MD	260	case 'a':
9e97e478 MD	261	if (argc < i + 2) {
70469b43	262	show_usage(argv);
9e97e478 MD	263	return -1;
	264	}
	265	a = atoi(argv[++i]);
2a7ac59d	266	cpu_affinities[next_aff++] = a;
9e97e478	267	use_affinity = 1;
4bad7d45	268	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	269	break;
8b632bab MD	270	case 'c':
8b632bab MD	271	if (argc < i + 2) {
70469b43	272	show_usage(argv);
8b632bab MD	273	return -1;
8b632bab MD	274	}
9e31d0f0	275	rduration = atol(argv[++i]);
8b632bab	276	break;
0ee8bb0a MD	277	case 'd':
0ee8bb0a MD	278	if (argc < i + 2) {
70469b43	279	show_usage(argv);
0ee8bb0a MD	280	return -1;
0ee8bb0a MD	281	}
9e31d0f0	282	wdelay = atol(argv[++i]);
0ee8bb0a	283	break;
31b598e0 MD	284	case 'e':
31b598e0 MD	285	if (argc < i + 2) {
70469b43	286	show_usage(argv);
31b598e0 MD	287	return -1;
	288	}
	289	wduration = atol(argv[++i]);
	290	break;
4bad7d45 MD	291	case 'v':
	292	verbose_mode = 1;
	293	break;
0ee8bb0a MD	294	}
	295	}
	296
4bad7d45	297	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a	298	duration, nr_readers, nr_writers);
9e31d0f0	299	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45	300	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	301	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	302	"main", urcu_get_thread_id());
0ee8bb0a	303
9aa14175 MD	304	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	305	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	306	tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
	307	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
	308	per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
83e334d0 MJ	309	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	310	pthread_mutex_init(&per_thread_lock[i_thr].lock, NULL);
dee09338	311	}
0ee8bb0a	312
2a7ac59d MD	313	next_aff = 0;
2a7ac59d MD	314
83e334d0 MJ	315	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	316	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	317	(void *)(long)i_thr);
0ee8bb0a MD	318	if (err != 0)
	319	exit(1);
	320	}
83e334d0 MJ	321	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	322	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	323	(void *)(long)i_thr);
0ee8bb0a MD	324	if (err != 0)
	325	exit(1);
	326	}
	327
9e4e7ad1	328	test_for(duration);
78efb485	329
83e334d0 MJ	330	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	331	err = pthread_join(tid_reader[i_thr], &tret);
0ee8bb0a MD	332	if (err != 0)
0ee8bb0a MD	333	exit(1);
83e334d0	334	tot_reads += tot_nr_reads[i_thr];
0ee8bb0a	335	}
83e334d0 MJ	336	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	337	err = pthread_join(tid_writer[i_thr], &tret);
0ee8bb0a MD	338	if (err != 0)
0ee8bb0a MD	339	exit(1);
83e334d0	340	tot_writes += tot_nr_writes[i_thr];
0ee8bb0a	341	}
4bad7d45 MD	342
4bad7d45 MD	343	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a	344	tot_writes);
a50a7b43	345	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	346	"nr_writers %3u "
9e31d0f0	347	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	348	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	349	nr_writers, wdelay, tot_reads, tot_writes,
	350	tot_reads + tot_writes);
	351
0ee8bb0a MD	352	free(tid_reader);
0ee8bb0a MD	353	free(tid_writer);
0ee8bb0a MD	354	free(tot_nr_reads);
	355	free(tot_nr_writes);
	356	free(per_thread_lock);
	357	return 0;
	358	}