[userspace-rcu.git] / tests / 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"

#ifdef __linux__
#include <syscall.h>
#endif

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

#if defined(_syscall0)
_syscall0(pid_t, gettid)
#elif defined(__NR_gettid)
static inline pid_t gettid(void)
{
	return syscall(__NR_gettid);
}
#else
#warning "use pid as tid"
static inline pid_t gettid(void)
{
	return getpid();
}
#endif

#ifndef DYNAMIC_LINK_TEST
#define _LGPL_SOURCE
#else
#define debug_yield_read()
#endif
#include <urcu.h>

struct test_array {
	int a;
};

pthread_rwlock_t lock = PTHREAD_RWLOCK_INITIALIZER;

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 l)
{
	while(l-- != 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)
{
	cpu_set_t mask;
	int cpu;
	int ret;

	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, thread id : %lx, tid %lu\n",
			"reader", (unsigned long) pthread_self(),
			(unsigned long) gettid());

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		pthread_rwlock_rdlock(&lock);
		assert(test_array.a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		pthread_rwlock_unlock(&lock);
		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	*count = URCU_TLS(nr_reads);
	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
			"reader", (unsigned long) pthread_self(),
			(unsigned long) gettid());
	return ((void*)1);

}

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

	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
			"writer", (unsigned long) pthread_self(),
			(unsigned long) gettid());

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		pthread_rwlock_wrlock(&lock);
		test_array.a = 0;
		test_array.a = 8;
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		pthread_rwlock_unlock(&lock);
		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
			"writer", (unsigned long) pthread_self(),
			(unsigned long) gettid());
	*count = URCU_TLS(nr_writes);
	return ((void*)2);
}

void show_usage(int argc, char **argv)
{
	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
#ifdef DEBUG_YIELD
	printf(" [-r] [-w] (yield reader and/or writer)");
#endif
	printf(" [-d delay] (writer period (us))");
	printf(" [-c duration] (reader C.S. duration (in loops))");
	printf(" [-e duration] (writer C.S. duration (in loops))");
	printf(" [-v] (verbose output)");
	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	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]) {
#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, thread id : %lx, tid %lu\n",
			"main", (unsigned long) pthread_self(),
			(unsigned long) gettid());

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

	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);

	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
d8540fc5	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>
95d8822d	38	#include "cpuset.h"
7685d963	39
65fcc7e9 MD	40	#ifdef __linux__
	41	#include <syscall.h>
	42	#endif
	43
2a7ac59d MD	44	/* hardcoded number of CPUs */
	45	#define NR_CPUS 16384
	46
10c48e14 MD	47	#if defined(_syscall0)
	48	_syscall0(pid_t, gettid)
	49	#elif defined(__NR_gettid)
	50	static inline pid_t gettid(void)
	51	{
	52	return syscall(__NR_gettid);
	53	}
	54	#else
	55	#warning "use pid as tid"
	56	static inline pid_t gettid(void)
	57	{
	58	return getpid();
	59	}
	60	#endif
	61
	62	#ifndef DYNAMIC_LINK_TEST
	63	#define _LGPL_SOURCE
	64	#else
	65	#define debug_yield_read()
	66	#endif
ec4e58a3	67	#include <urcu.h>
10c48e14 MD	68
	69	struct test_array {
	70	int a;
	71	};
	72
	73	pthread_rwlock_t lock = PTHREAD_RWLOCK_INITIALIZER;
	74
78efb485	75	static volatile int test_go, test_stop;
10c48e14	76
9e31d0f0	77	static unsigned long wdelay;
10c48e14	78
2b4e4125	79	static volatile struct test_array test_array = { 8 };
10c48e14 MD	80
10c48e14 MD	81	static unsigned long duration;
10c48e14	82
daddf5b0	83	/* read-side C.S. duration, in loops */
8b632bab MD	84	static unsigned long rduration;
8b632bab MD	85
31b598e0 MD	86	/* write-side C.S. duration, in loops */
	87	static unsigned long wduration;
	88
daddf5b0 MD	89	static inline void loop_sleep(unsigned long l)
	90	{
	91	while(l-- != 0)
06f22bdb	92	caa_cpu_relax();
daddf5b0 MD	93	}
daddf5b0 MD	94
4bad7d45 MD	95	static int verbose_mode;
	96
	97	#define printf_verbose(fmt, args...) \
	98	do { \
	99	if (verbose_mode) \
	100	printf(fmt, args); \
	101	} while (0)
	102
2a7ac59d MD	103	static unsigned int cpu_affinities[NR_CPUS];
	104	static unsigned int next_aff = 0;
	105	static int use_affinity = 0;
	106
6af882ba MD	107	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	108
2a7ac59d MD	109	static void set_affinity(void)
	110	{
	111	cpu_set_t mask;
	112	int cpu;
6af882ba	113	int ret;
2a7ac59d MD	114
	115	if (!use_affinity)
	116	return;
	117
d8540fc5	118	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	119	ret = pthread_mutex_lock(&affinity_mutex);
	120	if (ret) {
	121	perror("Error in pthread mutex lock");
	122	exit(-1);
	123	}
2a7ac59d	124	cpu = cpu_affinities[next_aff++];
6af882ba MD	125	ret = pthread_mutex_unlock(&affinity_mutex);
	126	if (ret) {
	127	perror("Error in pthread mutex unlock");
	128	exit(-1);
	129	}
d8540fc5	130
2a7ac59d MD	131	CPU_ZERO(&mask);
2a7ac59d MD	132	CPU_SET(cpu, &mask);
d8540fc5 PA	133	#if SCHED_SETAFFINITY_ARGS == 2
	134	sched_setaffinity(0, &mask);
	135	#else
2a7ac59d	136	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	137	#endif
d8540fc5 PA	138	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	139	}
2a7ac59d MD	140
10c48e14 MD	141	/*
	142	* returns 0 if test should end.
	143	*/
	144	static int test_duration_write(void)
	145	{
78efb485	146	return !test_stop;
10c48e14 MD	147	}
	148
	149	static int test_duration_read(void)
	150	{
78efb485	151	return !test_stop;
10c48e14 MD	152	}
10c48e14 MD	153
bd252a04 MD	154	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	155	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
10c48e14 MD	156
	157	static unsigned int nr_readers;
	158	static unsigned int nr_writers;
	159
	160	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	161
	162	void rcu_copy_mutex_lock(void)
	163	{
	164	int ret;
	165	ret = pthread_mutex_lock(&rcu_copy_mutex);
	166	if (ret) {
	167	perror("Error in pthread mutex lock");
	168	exit(-1);
	169	}
	170	}
	171
	172	void rcu_copy_mutex_unlock(void)
	173	{
	174	int ret;
	175
	176	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	177	if (ret) {
	178	perror("Error in pthread mutex unlock");
	179	exit(-1);
	180	}
	181	}
	182
	183	void thr_reader(void _count)
	184	{
	185	unsigned long long *count = _count;
	186
4bad7d45	187	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	188	"reader", (unsigned long) pthread_self(),
2d72fae2 MD	189	(unsigned long) gettid());
10c48e14	190
2a7ac59d MD	191	set_affinity();
2a7ac59d MD	192
10c48e14 MD	193	while (!test_go)
	194	{
	195	}
	196
	197	for (;;) {
	198	pthread_rwlock_rdlock(&lock);
	199	assert(test_array.a == 8);
a0b7f7ea	200	if (caa_unlikely(rduration))
daddf5b0	201	loop_sleep(rduration);
10c48e14	202	pthread_rwlock_unlock(&lock);
bd252a04	203	URCU_TLS(nr_reads)++;
a0b7f7ea	204	if (caa_unlikely(!test_duration_read()))
10c48e14 MD	205	break;
	206	}
	207
bd252a04	208	*count = URCU_TLS(nr_reads);
4bad7d45	209	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	210	"reader", (unsigned long) pthread_self(),
2d72fae2 MD	211	(unsigned long) gettid());
10c48e14 MD	212	return ((void*)1);
	213
	214	}
	215
	216	void thr_writer(void _count)
	217	{
	218	unsigned long long *count = _count;
	219
4bad7d45	220	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	221	"writer", (unsigned long) pthread_self(),
2d72fae2 MD	222	(unsigned long) gettid());
10c48e14	223
2a7ac59d MD	224	set_affinity();
2a7ac59d MD	225
10c48e14 MD	226	while (!test_go)
	227	{
	228	}
5481ddb3	229	cmm_smp_mb();
10c48e14 MD	230
	231	for (;;) {
	232	pthread_rwlock_wrlock(&lock);
2b4e4125	233	test_array.a = 0;
10c48e14	234	test_array.a = 8;
a0b7f7ea	235	if (caa_unlikely(wduration))
31b598e0	236	loop_sleep(wduration);
10c48e14	237	pthread_rwlock_unlock(&lock);
bd252a04	238	URCU_TLS(nr_writes)++;
a0b7f7ea	239	if (caa_unlikely(!test_duration_write()))
10c48e14	240	break;
a0b7f7ea	241	if (caa_unlikely(wdelay))
9e31d0f0	242	loop_sleep(wdelay);
10c48e14 MD	243	}
10c48e14 MD	244
4bad7d45	245	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	246	"writer", (unsigned long) pthread_self(),
2d72fae2 MD	247	(unsigned long) gettid());
bd252a04	248	*count = URCU_TLS(nr_writes);
10c48e14 MD	249	return ((void*)2);
	250	}
	251
	252	void show_usage(int argc, char **argv)
	253	{
	254	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	255	#ifdef DEBUG_YIELD
	256	printf(" [-r] [-w] (yield reader and/or writer)");
	257	#endif
7685d963	258	printf(" [-d delay] (writer period (us))");
daddf5b0	259	printf(" [-c duration] (reader C.S. duration (in loops))");
31b598e0	260	printf(" [-e duration] (writer C.S. duration (in loops))");
4bad7d45	261	printf(" [-v] (verbose output)");
9e97e478	262	printf(" [-a cpu#] [-a cpu#]... (affinity)");
10c48e14 MD	263	printf("\n");
	264	}
	265
	266	int main(int argc, char **argv)
	267	{
	268	int err;
	269	pthread_t tid_reader, tid_writer;
	270	void *tret;
	271	unsigned long long count_reader, count_writer;
	272	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	273	int i, a;
10c48e14 MD	274
	275	if (argc < 4) {
	276	show_usage(argc, argv);
	277	return -1;
	278	}
5481ddb3	279	cmm_smp_mb();
10c48e14 MD	280
	281	err = sscanf(argv[1], "%u", &nr_readers);
	282	if (err != 1) {
	283	show_usage(argc, argv);
	284	return -1;
	285	}
	286
	287	err = sscanf(argv[2], "%u", &nr_writers);
	288	if (err != 1) {
	289	show_usage(argc, argv);
	290	return -1;
	291	}
	292
	293	err = sscanf(argv[3], "%lu", &duration);
	294	if (err != 1) {
	295	show_usage(argc, argv);
	296	return -1;
	297	}
	298
	299	for (i = 4; i < argc; i++) {
	300	if (argv[i][0] != '-')
	301	continue;
	302	switch (argv[i][1]) {
	303	#ifdef DEBUG_YIELD
	304	case 'r':
	305	yield_active \|= YIELD_READ;
	306	break;
	307	case 'w':
	308	yield_active \|= YIELD_WRITE;
	309	break;
	310	#endif
9e97e478 MD	311	case 'a':
	312	if (argc < i + 2) {
	313	show_usage(argc, argv);
	314	return -1;
	315	}
	316	a = atoi(argv[++i]);
2a7ac59d	317	cpu_affinities[next_aff++] = a;
9e97e478	318	use_affinity = 1;
4bad7d45	319	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	320	break;
8b632bab MD	321	case 'c':
	322	if (argc < i + 2) {
	323	show_usage(argc, argv);
	324	return -1;
	325	}
9e31d0f0	326	rduration = atol(argv[++i]);
8b632bab	327	break;
10c48e14 MD	328	case 'd':
	329	if (argc < i + 2) {
	330	show_usage(argc, argv);
	331	return -1;
	332	}
9e31d0f0	333	wdelay = atol(argv[++i]);
10c48e14	334	break;
31b598e0 MD	335	case 'e':
	336	if (argc < i + 2) {
	337	show_usage(argc, argv);
	338	return -1;
	339	}
	340	wduration = atol(argv[++i]);
	341	break;
4bad7d45 MD	342	case 'v':
	343	verbose_mode = 1;
	344	break;
10c48e14 MD	345	}
	346	}
	347
4bad7d45	348	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
10c48e14	349	duration, nr_readers, nr_writers);
9e31d0f0	350	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	351	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	352	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
2d72fae2 MD	353	"main", (unsigned long) pthread_self(),
2d72fae2 MD	354	(unsigned long) gettid());
10c48e14 MD	355
	356	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	357	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	358	count_reader = malloc(sizeof(count_reader) nr_readers);
	359	count_writer = malloc(sizeof(count_writer) nr_writers);
	360
2a7ac59d MD	361	next_aff = 0;
2a7ac59d MD	362
10c48e14 MD	363	for (i = 0; i < nr_readers; i++) {
	364	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	365	&count_reader[i]);
	366	if (err != 0)
	367	exit(1);
	368	}
	369	for (i = 0; i < nr_writers; i++) {
	370	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	371	&count_writer[i]);
	372	if (err != 0)
	373	exit(1);
	374	}
	375
5481ddb3	376	cmm_smp_mb();
10c48e14	377
78efb485 MD	378	test_go = 1;
	379
	380	sleep(duration);
	381
	382	test_stop = 1;
	383
10c48e14 MD	384	for (i = 0; i < nr_readers; i++) {
	385	err = pthread_join(tid_reader[i], &tret);
	386	if (err != 0)
	387	exit(1);
	388	tot_reads += count_reader[i];
	389	}
	390	for (i = 0; i < nr_writers; i++) {
	391	err = pthread_join(tid_writer[i], &tret);
	392	if (err != 0)
	393	exit(1);
	394	tot_writes += count_writer[i];
	395	}
4bad7d45 MD	396
4bad7d45 MD	397	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
10c48e14	398	tot_writes);
a50a7b43	399	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	400	"nr_writers %3u "
9e31d0f0	401	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	402	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	403	nr_writers, wdelay, tot_reads, tot_writes,
	404	tot_reads + tot_writes);
	405
10c48e14 MD	406	free(tid_reader);
	407	free(tid_writer);
	408	free(count_reader);
	409	free(count_writer);
	410	return 0;
	411	}