[urcu.git] / tests / 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.
 */

#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
#else
#define debug_yield_read()
#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) {
		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 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;

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 *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 (;;) {
		pthread_mutex_lock(&per_thread_lock[tidx].lock);
		assert(test_array.a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		pthread_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);

}

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 < nr_readers; tidx++) {
			pthread_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--) {
			pthread_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);
}

void show_usage(int argc, char **argv)
{
	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
		argv[0]);
	printf("OPTIONS:\n");
#ifdef DEBUG_YIELD
	printf("	[-r] [-w] (yield reader and/or writer)\n");
#endif
	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;

	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]) {
#ifdef DEBUG_YIELD
		case 'r':
			yield_active |= YIELD_READ;
			break;
		case 'w':
			yield_active |= YIELD_WRITE;
			break;
#endif
		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 = malloc(sizeof(*tid_reader) * nr_readers);
	tid_writer = malloc(sizeof(*tid_writer) * nr_writers);
	tot_nr_reads = malloc(sizeof(*tot_nr_reads) * nr_readers);
	tot_nr_writes = malloc(sizeof(*tot_nr_writes) * nr_writers);
	per_thread_lock = malloc(sizeof(*per_thread_lock) * nr_readers);
	for (i = 0; i < nr_readers; i++) {
		err = pthread_mutex_init(&per_thread_lock[i].lock, NULL);
		if (err != 0)
			exit(1);
	}

	next_aff = 0;

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

	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
9e97e478	23	#define _GNU_SOURCE
d8540fc5	24	#include "../config.h"
0ee8bb0a 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>
0ee8bb0a	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
0ee8bb0a MD	44	#ifndef DYNAMIC_LINK_TEST
	45	#define _LGPL_SOURCE
	46	#else
	47	#define debug_yield_read()
	48	#endif
ec4e58a3	49	#include <urcu.h>
0ee8bb0a MD	50
	51	struct test_array {
	52	int a;
	53	};
	54
	55	struct per_thread_lock {
	56	pthread_mutex_t lock;
06f22bdb	57	} __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */
0ee8bb0a MD	58
	59	static struct per_thread_lock *per_thread_lock;
	60
78efb485	61	static volatile int test_go, test_stop;
0ee8bb0a	62
9e31d0f0	63	static unsigned long wdelay;
0ee8bb0a	64
2b4e4125	65	static volatile struct test_array test_array = { 8 };
0ee8bb0a MD	66
0ee8bb0a MD	67	static unsigned long duration;
0ee8bb0a	68
daddf5b0	69	/* read-side C.S. duration, in loops */
8b632bab MD	70	static unsigned long rduration;
8b632bab MD	71
31b598e0 MD	72	/* write-side C.S. duration, in loops */
	73	static unsigned long wduration;
	74
ab0aacbe	75	static inline void loop_sleep(unsigned long loops)
daddf5b0	76	{
ab0aacbe	77	while (loops-- != 0)
06f22bdb	78	caa_cpu_relax();
daddf5b0 MD	79	}
daddf5b0 MD	80
4bad7d45 MD	81	static int verbose_mode;
	82
	83	#define printf_verbose(fmt, args...) \
	84	do { \
	85	if (verbose_mode) \
	86	printf(fmt, args); \
	87	} while (0)
	88
2a7ac59d MD	89	static unsigned int cpu_affinities[NR_CPUS];
	90	static unsigned int next_aff = 0;
	91	static int use_affinity = 0;
	92
6af882ba MD	93	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	94
2a7ac59d MD	95	static void set_affinity(void)
2a7ac59d MD	96	{
95bc7fb9	97	#if HAVE_SCHED_SETAFFINITY
2a7ac59d	98	cpu_set_t mask;
95bc7fb9 MD	99	int cpu, ret;
95bc7fb9 MD	100	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	101
	102	if (!use_affinity)
	103	return;
	104
d8540fc5	105	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	106	ret = pthread_mutex_lock(&affinity_mutex);
	107	if (ret) {
	108	perror("Error in pthread mutex lock");
	109	exit(-1);
	110	}
2a7ac59d	111	cpu = cpu_affinities[next_aff++];
6af882ba MD	112	ret = pthread_mutex_unlock(&affinity_mutex);
	113	if (ret) {
	114	perror("Error in pthread mutex unlock");
	115	exit(-1);
	116	}
2a7ac59d MD	117	CPU_ZERO(&mask);
2a7ac59d MD	118	CPU_SET(cpu, &mask);
d8540fc5 PA	119	#if SCHED_SETAFFINITY_ARGS == 2
	120	sched_setaffinity(0, &mask);
	121	#else
2a7ac59d	122	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	123	#endif
d8540fc5 PA	124	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	125	}
2a7ac59d MD	126
0ee8bb0a MD	127	/*
	128	* returns 0 if test should end.
	129	*/
	130	static int test_duration_write(void)
	131	{
78efb485	132	return !test_stop;
0ee8bb0a MD	133	}
	134
	135	static int test_duration_read(void)
	136	{
78efb485	137	return !test_stop;
0ee8bb0a MD	138	}
0ee8bb0a MD	139
bd252a04 MD	140	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	141	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
0ee8bb0a	142
55271c13	143	static
06f22bdb	144	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13	145	static
06f22bdb	146	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
0ee8bb0a MD	147
	148	static unsigned int nr_readers;
	149	static unsigned int nr_writers;
	150
	151	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	152
	153	void rcu_copy_mutex_lock(void)
	154	{
	155	int ret;
	156	ret = pthread_mutex_lock(&rcu_copy_mutex);
	157	if (ret) {
	158	perror("Error in pthread mutex lock");
	159	exit(-1);
	160	}
	161	}
	162
	163	void rcu_copy_mutex_unlock(void)
	164	{
	165	int ret;
	166
	167	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	168	if (ret) {
	169	perror("Error in pthread mutex unlock");
	170	exit(-1);
	171	}
	172	}
	173
	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 (;;) {
	188	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	189	assert(test_array.a == 8);
a0b7f7ea	190	if (caa_unlikely(rduration))
daddf5b0	191	loop_sleep(rduration);
0ee8bb0a	192	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
bd252a04	193	URCU_TLS(nr_reads)++;
a0b7f7ea	194	if (caa_unlikely(!test_duration_read()))
0ee8bb0a MD	195	break;
	196	}
	197
bd252a04	198	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
94df6318 MD	199	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	200	"reader", urcu_get_thread_id());
0ee8bb0a MD	201	return ((void*)1);
	202
	203	}
	204
	205	void thr_writer(void data)
	206	{
	207	unsigned long wtidx = (unsigned long)data;
	208	long tidx;
	209
94df6318 MD	210	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	211	"writer", urcu_get_thread_id());
0ee8bb0a	212
2a7ac59d MD	213	set_affinity();
2a7ac59d MD	214
0ee8bb0a MD	215	while (!test_go)
	216	{
	217	}
5481ddb3	218	cmm_smp_mb();
0ee8bb0a MD	219
	220	for (;;) {
	221	for (tidx = 0; tidx < nr_readers; tidx++) {
	222	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	223	}
2b4e4125	224	test_array.a = 0;
0ee8bb0a	225	test_array.a = 8;
a0b7f7ea	226	if (caa_unlikely(wduration))
31b598e0	227	loop_sleep(wduration);
f120cc10	228	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
0ee8bb0a MD	229	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a MD	230	}
bd252a04	231	URCU_TLS(nr_writes)++;
a0b7f7ea	232	if (caa_unlikely(!test_duration_write()))
0ee8bb0a	233	break;
a0b7f7ea	234	if (caa_unlikely(wdelay))
9e31d0f0	235	loop_sleep(wdelay);
0ee8bb0a MD	236	}
0ee8bb0a MD	237
94df6318 MD	238	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	239	"writer", urcu_get_thread_id());
bd252a04	240	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
0ee8bb0a MD	241	return ((void*)2);
	242	}
	243
	244	void show_usage(int argc, char **argv)
	245	{
06637138 MD	246	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	247	argv[0]);
	248	printf("OPTIONS:\n");
0ee8bb0a	249	#ifdef DEBUG_YIELD
06637138	250	printf(" [-r] [-w] (yield reader and/or writer)\n");
0ee8bb0a	251	#endif
06637138 MD	252	printf(" [-d delay] (writer period (us))\n");
	253	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	254	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	255	printf(" [-v] (verbose output)\n");
	256	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
0ee8bb0a MD	257	printf("\n");
	258	}
	259
	260	int main(int argc, char **argv)
	261	{
	262	int err;
	263	pthread_t tid_reader, tid_writer;
	264	void *tret;
0ee8bb0a	265	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	266	int i, a;
0ee8bb0a MD	267
	268	if (argc < 4) {
	269	show_usage(argc, argv);
	270	return -1;
	271	}
5481ddb3	272	cmm_smp_mb();
0ee8bb0a MD	273
	274	err = sscanf(argv[1], "%u", &nr_readers);
	275	if (err != 1) {
	276	show_usage(argc, argv);
	277	return -1;
	278	}
	279
	280	err = sscanf(argv[2], "%u", &nr_writers);
	281	if (err != 1) {
	282	show_usage(argc, argv);
	283	return -1;
	284	}
	285
	286	err = sscanf(argv[3], "%lu", &duration);
	287	if (err != 1) {
	288	show_usage(argc, argv);
	289	return -1;
	290	}
	291
	292	for (i = 4; i < argc; i++) {
	293	if (argv[i][0] != '-')
	294	continue;
	295	switch (argv[i][1]) {
	296	#ifdef DEBUG_YIELD
	297	case 'r':
	298	yield_active \|= YIELD_READ;
	299	break;
	300	case 'w':
	301	yield_active \|= YIELD_WRITE;
	302	break;
	303	#endif
9e97e478 MD	304	case 'a':
	305	if (argc < i + 2) {
	306	show_usage(argc, argv);
	307	return -1;
	308	}
	309	a = atoi(argv[++i]);
2a7ac59d	310	cpu_affinities[next_aff++] = a;
9e97e478	311	use_affinity = 1;
4bad7d45	312	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	313	break;
8b632bab MD	314	case 'c':
	315	if (argc < i + 2) {
	316	show_usage(argc, argv);
	317	return -1;
	318	}
9e31d0f0	319	rduration = atol(argv[++i]);
8b632bab	320	break;
0ee8bb0a MD	321	case 'd':
	322	if (argc < i + 2) {
	323	show_usage(argc, argv);
	324	return -1;
	325	}
9e31d0f0	326	wdelay = atol(argv[++i]);
0ee8bb0a	327	break;
31b598e0 MD	328	case 'e':
	329	if (argc < i + 2) {
	330	show_usage(argc, argv);
	331	return -1;
	332	}
	333	wduration = atol(argv[++i]);
	334	break;
4bad7d45 MD	335	case 'v':
	336	verbose_mode = 1;
	337	break;
0ee8bb0a MD	338	}
	339	}
	340
4bad7d45	341	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a	342	duration, nr_readers, nr_writers);
9e31d0f0	343	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45	344	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	345	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	346	"main", urcu_get_thread_id());
0ee8bb0a MD	347
	348	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	349	tid_writer = malloc(sizeof(tid_writer) nr_writers);
0ee8bb0a MD	350	tot_nr_reads = malloc(sizeof(tot_nr_reads) nr_readers);
	351	tot_nr_writes = malloc(sizeof(tot_nr_writes) nr_writers);
	352	per_thread_lock = malloc(sizeof(per_thread_lock) nr_readers);
dee09338 MD	353	for (i = 0; i < nr_readers; i++) {
	354	err = pthread_mutex_init(&per_thread_lock[i].lock, NULL);
	355	if (err != 0)
	356	exit(1);
	357	}
0ee8bb0a	358
2a7ac59d MD	359	next_aff = 0;
2a7ac59d MD	360
0ee8bb0a MD	361	for (i = 0; i < nr_readers; i++) {
	362	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	363	(void *)(long)i);
	364	if (err != 0)
	365	exit(1);
	366	}
	367	for (i = 0; i < nr_writers; i++) {
	368	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	369	(void *)(long)i);
	370	if (err != 0)
	371	exit(1);
	372	}
	373
5481ddb3	374	cmm_smp_mb();
0ee8bb0a	375
78efb485 MD	376	test_go = 1;
	377
	378	sleep(duration);
	379
	380	test_stop = 1;
	381
0ee8bb0a MD	382	for (i = 0; i < nr_readers; i++) {
	383	err = pthread_join(tid_reader[i], &tret);
	384	if (err != 0)
	385	exit(1);
	386	tot_reads += tot_nr_reads[i];
	387	}
	388	for (i = 0; i < nr_writers; i++) {
	389	err = pthread_join(tid_writer[i], &tret);
	390	if (err != 0)
	391	exit(1);
	392	tot_writes += tot_nr_writes[i];
	393	}
4bad7d45 MD	394
4bad7d45 MD	395	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a	396	tot_writes);
a50a7b43	397	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	398	"nr_writers %3u "
9e31d0f0	399	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	400	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	401	nr_writers, wdelay, tot_reads, tot_writes,
	402	tot_reads + tot_writes);
	403
0ee8bb0a MD	404	free(tid_reader);
0ee8bb0a MD	405	free(tid_writer);
0ee8bb0a MD	406	free(tot_nr_reads);
	407	free(tot_nr_writes);
	408	free(per_thread_lock);
	409	return 0;
	410	}