[userspace-rcu.git] / tests / benchmark / test_rwlock.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.
 */

#define _GNU_SOURCE
#include "config.h"
#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;
};

/*
 * static rwlock initializer is broken on Cygwin. Use runtime
 * initialization.
 */
pthread_rwlock_t 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) {
		perror("Error in pthread mutex lock");
		exit(-1);
	}
	cpu = cpu_affinities[next_aff++];
	ret = pthread_mutex_unlock(&affinity_mutex);
	if (ret) {
		perror("Error in pthread mutex unlock");
		exit(-1);
	}

	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 int nr_readers;
static unsigned int nr_writers;

pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;

void rcu_copy_mutex_lock(void)
{
	int ret;
	ret = pthread_mutex_lock(&rcu_copy_mutex);
	if (ret) {
		perror("Error in pthread mutex lock");
		exit(-1);
	}
}

void rcu_copy_mutex_unlock(void)
{
	int ret;

	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	if (ret) {
		perror("Error in pthread mutex unlock");
		exit(-1);
	}
}

void *thr_reader(void *_count)
{
	unsigned long long *count = _count;

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

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		int a, ret;

		ret = pthread_rwlock_rdlock(&lock);
		if (ret) {
			fprintf(stderr, "reader pthread_rwlock_rdlock: %s\n", strerror(ret));
			abort();
		}

		a = test_array.a;
		assert(a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);

		ret = pthread_rwlock_unlock(&lock);
		if (ret) {
			fprintf(stderr, "reader pthread_rwlock_unlock: %s\n", strerror(ret));
			abort();
		}

		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

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

}

void *thr_writer(void *_count)
{
	unsigned long long *count = _count;

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		int ret;

		ret = pthread_rwlock_wrlock(&lock);
		if (ret) {
			fprintf(stderr, "writer pthread_rwlock_wrlock: %s\n", strerror(ret));
			abort();
		}

		test_array.a = 0;
		test_array.a = 8;
		if (caa_unlikely(wduration))
			loop_sleep(wduration);

		ret = pthread_rwlock_unlock(&lock);
		if (ret) {
			fprintf(stderr, "writer pthread_rwlock_unlock: %s\n", strerror(ret));
			abort();
		}

		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());
	*count = URCU_TLS(nr_writes);
	return ((void*)2);
}

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 *count_reader, *count_writer;
	unsigned long long tot_reads = 0, tot_writes = 0;
	int i, a;

	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());

	err = pthread_rwlock_init(&lock, NULL);
	if (err != 0) {
		fprintf(stderr, "pthread_rwlock_init: (%d) %s\n", err, strerror(err));
		exit(1);
	}

	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	count_reader = calloc(nr_readers, sizeof(*count_reader));
	count_writer = calloc(nr_writers, sizeof(*count_writer));

	next_aff = 0;

	for (i = 0; i < nr_readers; i++) {
		err = pthread_create(&tid_reader[i], NULL, thr_reader,
				     &count_reader[i]);
		if (err != 0)
			exit(1);
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_create(&tid_writer[i], NULL, thr_writer,
				     &count_writer[i]);
		if (err != 0)
			exit(1);
	}

	cmm_smp_mb();

	test_go = 1;

	sleep(duration);

	test_stop = 1;

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

	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);

	err = pthread_rwlock_destroy(&lock);
	if (err != 0) {
		fprintf(stderr, "pthread_rwlock_destroy: (%d) %s\n", err, strerror(err));
		exit(1);
	}
	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	return 0;
}
Commit	Line	Data
10c48e14 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>
10c48e14 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
9e97e478	23	#define _GNU_SOURCE
f5ab766e	24	#include "config.h"
10c48e14 MD	25	#include <stdio.h>
	26	#include <pthread.h>
	27	#include <stdlib.h>
	28	#include <string.h>
	29	#include <sys/types.h>
	30	#include <sys/wait.h>
	31	#include <unistd.h>
	32	#include <stdio.h>
	33	#include <assert.h>
94b343fd	34	#include <errno.h>
10c48e14	35
ec4e58a3	36	#include <urcu/arch.h>
bd252a04	37	#include <urcu/tls-compat.h>
2953b501	38	#include "cpuset.h"
94df6318	39	#include "thread-id.h"
65fcc7e9	40
2a7ac59d MD	41	/* hardcoded number of CPUs */
	42	#define NR_CPUS 16384
	43
10c48e14 MD	44	#ifndef DYNAMIC_LINK_TEST
10c48e14 MD	45	#define _LGPL_SOURCE
10c48e14	46	#endif
ec4e58a3	47	#include <urcu.h>
10c48e14 MD	48
	49	struct test_array {
	50	int a;
	51	};
	52
ff981126 MJ	53	/*
	54	* static rwlock initializer is broken on Cygwin. Use runtime
	55	* initialization.
	56	*/
	57	pthread_rwlock_t lock;
10c48e14	58
78efb485	59	static volatile int test_go, test_stop;
10c48e14	60
9e31d0f0	61	static unsigned long wdelay;
10c48e14	62
2b4e4125	63	static volatile struct test_array test_array = { 8 };
10c48e14 MD	64
10c48e14 MD	65	static unsigned long duration;
10c48e14	66
daddf5b0	67	/* read-side C.S. duration, in loops */
8b632bab MD	68	static unsigned long rduration;
8b632bab MD	69
31b598e0 MD	70	/* write-side C.S. duration, in loops */
	71	static unsigned long wduration;
	72
ab0aacbe	73	static inline void loop_sleep(unsigned long loops)
daddf5b0	74	{
ab0aacbe	75	while (loops-- != 0)
06f22bdb	76	caa_cpu_relax();
daddf5b0 MD	77	}
daddf5b0 MD	78
4bad7d45 MD	79	static int verbose_mode;
	80
	81	#define printf_verbose(fmt, args...) \
	82	do { \
	83	if (verbose_mode) \
	84	printf(fmt, args); \
	85	} while (0)
	86
2a7ac59d MD	87	static unsigned int cpu_affinities[NR_CPUS];
	88	static unsigned int next_aff = 0;
	89	static int use_affinity = 0;
	90
6af882ba MD	91	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	92
2a7ac59d MD	93	static void set_affinity(void)
2a7ac59d MD	94	{
95bc7fb9	95	#if HAVE_SCHED_SETAFFINITY
2a7ac59d	96	cpu_set_t mask;
95bc7fb9 MD	97	int cpu, ret;
95bc7fb9 MD	98	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	99
	100	if (!use_affinity)
	101	return;
	102
d8540fc5	103	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	104	ret = pthread_mutex_lock(&affinity_mutex);
	105	if (ret) {
	106	perror("Error in pthread mutex lock");
	107	exit(-1);
	108	}
2a7ac59d	109	cpu = cpu_affinities[next_aff++];
6af882ba MD	110	ret = pthread_mutex_unlock(&affinity_mutex);
	111	if (ret) {
	112	perror("Error in pthread mutex unlock");
	113	exit(-1);
	114	}
d8540fc5	115
2a7ac59d MD	116	CPU_ZERO(&mask);
2a7ac59d MD	117	CPU_SET(cpu, &mask);
d8540fc5 PA	118	#if SCHED_SETAFFINITY_ARGS == 2
	119	sched_setaffinity(0, &mask);
	120	#else
2a7ac59d	121	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	122	#endif
d8540fc5 PA	123	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	124	}
2a7ac59d MD	125
10c48e14 MD	126	/*
	127	* returns 0 if test should end.
	128	*/
	129	static int test_duration_write(void)
	130	{
78efb485	131	return !test_stop;
10c48e14 MD	132	}
	133
	134	static int test_duration_read(void)
	135	{
78efb485	136	return !test_stop;
10c48e14 MD	137	}
10c48e14 MD	138
bd252a04 MD	139	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	140	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
10c48e14 MD	141
	142	static unsigned int nr_readers;
	143	static unsigned int nr_writers;
	144
	145	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	146
	147	void rcu_copy_mutex_lock(void)
	148	{
	149	int ret;
	150	ret = pthread_mutex_lock(&rcu_copy_mutex);
	151	if (ret) {
	152	perror("Error in pthread mutex lock");
	153	exit(-1);
	154	}
	155	}
	156
	157	void rcu_copy_mutex_unlock(void)
	158	{
	159	int ret;
	160
	161	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	162	if (ret) {
	163	perror("Error in pthread mutex unlock");
	164	exit(-1);
	165	}
	166	}
	167
	168	void thr_reader(void _count)
	169	{
	170	unsigned long long *count = _count;
	171
94df6318 MD	172	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	173	"reader", urcu_get_thread_id());
10c48e14	174
2a7ac59d MD	175	set_affinity();
2a7ac59d MD	176
10c48e14 MD	177	while (!test_go)
	178	{
	179	}
	180
	181	for (;;) {
ff981126 MJ	182	int a, ret;
	183
	184	ret = pthread_rwlock_rdlock(&lock);
	185	if (ret) {
	186	fprintf(stderr, "reader pthread_rwlock_rdlock: %s\n", strerror(ret));
	187	abort();
	188	}
efa8d2c8	189
efa8d2c8 MD	190	a = test_array.a;
efa8d2c8 MD	191	assert(a == 8);
a0b7f7ea	192	if (caa_unlikely(rduration))
daddf5b0	193	loop_sleep(rduration);
ff981126 MJ	194
	195	ret = pthread_rwlock_unlock(&lock);
	196	if (ret) {
	197	fprintf(stderr, "reader pthread_rwlock_unlock: %s\n", strerror(ret));
	198	abort();
	199	}
	200
bd252a04	201	URCU_TLS(nr_reads)++;
a0b7f7ea	202	if (caa_unlikely(!test_duration_read()))
10c48e14 MD	203	break;
	204	}
	205
bd252a04	206	*count = URCU_TLS(nr_reads);
94df6318 MD	207	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	208	"reader", urcu_get_thread_id());
10c48e14 MD	209	return ((void*)1);
	210
	211	}
	212
	213	void thr_writer(void _count)
	214	{
	215	unsigned long long *count = _count;
	216
94df6318 MD	217	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	218	"writer", urcu_get_thread_id());
10c48e14	219
2a7ac59d MD	220	set_affinity();
2a7ac59d MD	221
10c48e14 MD	222	while (!test_go)
	223	{
	224	}
5481ddb3	225	cmm_smp_mb();
10c48e14 MD	226
10c48e14 MD	227	for (;;) {
ff981126 MJ	228	int ret;
	229
	230	ret = pthread_rwlock_wrlock(&lock);
	231	if (ret) {
	232	fprintf(stderr, "writer pthread_rwlock_wrlock: %s\n", strerror(ret));
	233	abort();
	234	}
	235
2b4e4125	236	test_array.a = 0;
10c48e14	237	test_array.a = 8;
a0b7f7ea	238	if (caa_unlikely(wduration))
31b598e0	239	loop_sleep(wduration);
ff981126 MJ	240
	241	ret = pthread_rwlock_unlock(&lock);
	242	if (ret) {
	243	fprintf(stderr, "writer pthread_rwlock_unlock: %s\n", strerror(ret));
	244	abort();
	245	}
	246
bd252a04	247	URCU_TLS(nr_writes)++;
a0b7f7ea	248	if (caa_unlikely(!test_duration_write()))
10c48e14	249	break;
a0b7f7ea	250	if (caa_unlikely(wdelay))
9e31d0f0	251	loop_sleep(wdelay);
10c48e14 MD	252	}
10c48e14 MD	253
94df6318 MD	254	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	255	"writer", urcu_get_thread_id());
bd252a04	256	*count = URCU_TLS(nr_writes);
10c48e14 MD	257	return ((void*)2);
	258	}
	259
	260	void show_usage(int argc, char **argv)
	261	{
06637138 MD	262	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	263	argv[0]);
	264	printf("OPTIONS:\n");
06637138 MD	265	printf(" [-d delay] (writer period (us))\n");
	266	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	267	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	268	printf(" [-v] (verbose output)\n");
	269	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
10c48e14 MD	270	printf("\n");
	271	}
	272
	273	int main(int argc, char **argv)
	274	{
	275	int err;
	276	pthread_t tid_reader, tid_writer;
	277	void *tret;
	278	unsigned long long count_reader, count_writer;
	279	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	280	int i, a;
10c48e14 MD	281
	282	if (argc < 4) {
	283	show_usage(argc, argv);
	284	return -1;
	285	}
5481ddb3	286	cmm_smp_mb();
10c48e14 MD	287
	288	err = sscanf(argv[1], "%u", &nr_readers);
	289	if (err != 1) {
	290	show_usage(argc, argv);
	291	return -1;
	292	}
	293
	294	err = sscanf(argv[2], "%u", &nr_writers);
	295	if (err != 1) {
	296	show_usage(argc, argv);
	297	return -1;
	298	}
	299
	300	err = sscanf(argv[3], "%lu", &duration);
	301	if (err != 1) {
	302	show_usage(argc, argv);
	303	return -1;
	304	}
	305
	306	for (i = 4; i < argc; i++) {
	307	if (argv[i][0] != '-')
	308	continue;
	309	switch (argv[i][1]) {
9e97e478 MD	310	case 'a':
	311	if (argc < i + 2) {
	312	show_usage(argc, argv);
	313	return -1;
	314	}
	315	a = atoi(argv[++i]);
2a7ac59d	316	cpu_affinities[next_aff++] = a;
9e97e478	317	use_affinity = 1;
4bad7d45	318	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	319	break;
8b632bab MD	320	case 'c':
	321	if (argc < i + 2) {
	322	show_usage(argc, argv);
	323	return -1;
	324	}
9e31d0f0	325	rduration = atol(argv[++i]);
8b632bab	326	break;
10c48e14 MD	327	case 'd':
	328	if (argc < i + 2) {
	329	show_usage(argc, argv);
	330	return -1;
	331	}
9e31d0f0	332	wdelay = atol(argv[++i]);
10c48e14	333	break;
31b598e0 MD	334	case 'e':
	335	if (argc < i + 2) {
	336	show_usage(argc, argv);
	337	return -1;
	338	}
	339	wduration = atol(argv[++i]);
	340	break;
4bad7d45 MD	341	case 'v':
	342	verbose_mode = 1;
	343	break;
10c48e14 MD	344	}
	345	}
	346
4bad7d45	347	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
10c48e14	348	duration, nr_readers, nr_writers);
9e31d0f0	349	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45	350	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	351	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	352	"main", urcu_get_thread_id());
10c48e14	353
ff981126 MJ	354	err = pthread_rwlock_init(&lock, NULL);
	355	if (err != 0) {
	356	fprintf(stderr, "pthread_rwlock_init: (%d) %s\n", err, strerror(err));
	357	exit(1);
	358	}
	359
9aa14175 MD	360	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	361	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	362	count_reader = calloc(nr_readers, sizeof(*count_reader));
	363	count_writer = calloc(nr_writers, sizeof(*count_writer));
10c48e14	364
2a7ac59d MD	365	next_aff = 0;
2a7ac59d MD	366
10c48e14 MD	367	for (i = 0; i < nr_readers; i++) {
	368	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	369	&count_reader[i]);
	370	if (err != 0)
	371	exit(1);
	372	}
	373	for (i = 0; i < nr_writers; i++) {
	374	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	375	&count_writer[i]);
	376	if (err != 0)
	377	exit(1);
	378	}
	379
5481ddb3	380	cmm_smp_mb();
10c48e14	381
78efb485 MD	382	test_go = 1;
	383
	384	sleep(duration);
	385
	386	test_stop = 1;
	387
10c48e14 MD	388	for (i = 0; i < nr_readers; i++) {
	389	err = pthread_join(tid_reader[i], &tret);
	390	if (err != 0)
	391	exit(1);
	392	tot_reads += count_reader[i];
	393	}
	394	for (i = 0; i < nr_writers; i++) {
	395	err = pthread_join(tid_writer[i], &tret);
	396	if (err != 0)
	397	exit(1);
	398	tot_writes += count_writer[i];
	399	}
4bad7d45 MD	400
4bad7d45 MD	401	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
10c48e14	402	tot_writes);
a50a7b43	403	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	404	"nr_writers %3u "
9e31d0f0	405	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	406	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	407	nr_writers, wdelay, tot_reads, tot_writes,
	408	tot_reads + tot_writes);
	409
ff981126 MJ	410	err = pthread_rwlock_destroy(&lock);
	411	if (err != 0) {
	412	fprintf(stderr, "pthread_rwlock_destroy: (%d) %s\n", err, strerror(err));
	413	exit(1);
	414	}
10c48e14 MD	415	free(tid_reader);
	416	free(tid_writer);
	417	free(count_reader);
	418	free(count_writer);
	419	return 0;
	420	}