[urcu.git] / tests / test_perthreadlock.c

/*
 * test_urcu.c
 *
 * Userspace RCU library - test program
 *
 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
 *
 * 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 <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 <sys/syscall.h>
#include <sched.h>

#include <urcu/arch.h>

/* 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;
};

struct per_thread_lock {
	pthread_mutex_t lock;
} __attribute__((aligned(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;

static inline void loop_sleep(unsigned long l)
{
	while(l-- != 0)
		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;

	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);
	sched_setaffinity(0, sizeof(mask), &mask);
}

/*
 * 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 unsigned long long __thread nr_writes;
static unsigned long long __thread nr_reads;

static
unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_writes;
static
unsigned long long __attribute__((aligned(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, thread id : %lx, tid %lu\n",
			"reader", pthread_self(), (unsigned long)gettid());

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		pthread_mutex_lock(&per_thread_lock[tidx].lock);
		assert(test_array.a == 8);
		if (unlikely(rduration))
			loop_sleep(rduration);
		pthread_mutex_unlock(&per_thread_lock[tidx].lock);
		nr_reads++;
		if (unlikely(!test_duration_read()))
			break;
	}

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

}

void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;
	long tidx;

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

	set_affinity();

	while (!test_go)
	{
	}
	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;
		for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
			pthread_mutex_unlock(&per_thread_lock[tidx].lock);
		}
		nr_writes++;
		if (unlikely(!test_duration_write()))
			break;
		if (unlikely(wdelay))
			loop_sleep(wdelay);
	}

	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
			"writer", pthread_self(), (unsigned long)gettid());
	tot_nr_writes[wtidx] = 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(" [-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;
	}
	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 '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", 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);
	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);

	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);
	}

	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 "
		"nr_writers %3u "
		"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
		argv[0], duration, nr_readers, rduration,
		nr_writers, wdelay, tot_reads, tot_writes,
		tot_reads + tot_writes);

	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_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	*
	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
	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
0ee8bb0a MD	24	#include <stdio.h>
	25	#include <pthread.h>
	26	#include <stdlib.h>
	27	#include <string.h>
	28	#include <sys/types.h>
	29	#include <sys/wait.h>
	30	#include <unistd.h>
	31	#include <stdio.h>
	32	#include <assert.h>
	33	#include <sys/syscall.h>
9e97e478	34	#include <sched.h>
0ee8bb0a	35
ec4e58a3	36	#include <urcu/arch.h>
0ee8bb0a	37
2a7ac59d MD	38	/* hardcoded number of CPUs */
	39	#define NR_CPUS 16384
	40
0ee8bb0a MD	41	#if defined(_syscall0)
	42	_syscall0(pid_t, gettid)
	43	#elif defined(__NR_gettid)
	44	static inline pid_t gettid(void)
	45	{
	46	return syscall(__NR_gettid);
	47	}
	48	#else
	49	#warning "use pid as tid"
	50	static inline pid_t gettid(void)
	51	{
	52	return getpid();
	53	}
	54	#endif
	55
	56	#ifndef DYNAMIC_LINK_TEST
	57	#define _LGPL_SOURCE
	58	#else
	59	#define debug_yield_read()
	60	#endif
ec4e58a3	61	#include <urcu.h>
0ee8bb0a MD	62
	63	struct test_array {
	64	int a;
	65	};
	66
	67	struct per_thread_lock {
	68	pthread_mutex_t lock;
55271c13	69	} __attribute__((aligned(CACHE_LINE_SIZE))); /* cache-line aligned */
0ee8bb0a MD	70
	71	static struct per_thread_lock *per_thread_lock;
	72
78efb485	73	static volatile int test_go, test_stop;
0ee8bb0a	74
9e31d0f0	75	static unsigned long wdelay;
0ee8bb0a	76
2b4e4125	77	static volatile struct test_array test_array = { 8 };
0ee8bb0a MD	78
0ee8bb0a MD	79	static unsigned long duration;
0ee8bb0a	80
daddf5b0	81	/* read-side C.S. duration, in loops */
8b632bab MD	82	static unsigned long rduration;
8b632bab MD	83
daddf5b0 MD	84	static inline void loop_sleep(unsigned long l)
	85	{
	86	while(l-- != 0)
	87	cpu_relax();
	88	}
	89
4bad7d45 MD	90	static int verbose_mode;
	91
	92	#define printf_verbose(fmt, args...) \
	93	do { \
	94	if (verbose_mode) \
	95	printf(fmt, args); \
	96	} while (0)
	97
2a7ac59d MD	98	static unsigned int cpu_affinities[NR_CPUS];
	99	static unsigned int next_aff = 0;
	100	static int use_affinity = 0;
	101
6af882ba MD	102	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	103
2a7ac59d MD	104	static void set_affinity(void)
	105	{
	106	cpu_set_t mask;
	107	int cpu;
6af882ba	108	int ret;
2a7ac59d MD	109
	110	if (!use_affinity)
	111	return;
	112
6af882ba MD	113	ret = pthread_mutex_lock(&affinity_mutex);
	114	if (ret) {
	115	perror("Error in pthread mutex lock");
	116	exit(-1);
	117	}
2a7ac59d	118	cpu = cpu_affinities[next_aff++];
6af882ba MD	119	ret = pthread_mutex_unlock(&affinity_mutex);
	120	if (ret) {
	121	perror("Error in pthread mutex unlock");
	122	exit(-1);
	123	}
2a7ac59d MD	124	CPU_ZERO(&mask);
	125	CPU_SET(cpu, &mask);
	126	sched_setaffinity(0, sizeof(mask), &mask);
	127	}
	128
0ee8bb0a MD	129	/*
	130	* returns 0 if test should end.
	131	*/
	132	static int test_duration_write(void)
	133	{
78efb485	134	return !test_stop;
0ee8bb0a MD	135	}
	136
	137	static int test_duration_read(void)
	138	{
78efb485	139	return !test_stop;
0ee8bb0a MD	140	}
	141
	142	static unsigned long long __thread nr_writes;
	143	static unsigned long long __thread nr_reads;
	144
55271c13 MD	145	static
	146	unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_writes;
	147	static
	148	unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_reads;
0ee8bb0a MD	149
	150	static unsigned int nr_readers;
	151	static unsigned int nr_writers;
	152
	153	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	154
	155	void rcu_copy_mutex_lock(void)
	156	{
	157	int ret;
	158	ret = pthread_mutex_lock(&rcu_copy_mutex);
	159	if (ret) {
	160	perror("Error in pthread mutex lock");
	161	exit(-1);
	162	}
	163	}
	164
	165	void rcu_copy_mutex_unlock(void)
	166	{
	167	int ret;
	168
	169	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	170	if (ret) {
	171	perror("Error in pthread mutex unlock");
	172	exit(-1);
	173	}
	174	}
	175
	176	void thr_reader(void data)
	177	{
	178	unsigned long tidx = (unsigned long)data;
	179
4bad7d45	180	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	181	"reader", pthread_self(), (unsigned long)gettid());
0ee8bb0a MD	182
2a7ac59d MD	183	set_affinity();
2a7ac59d MD	184
0ee8bb0a MD	185	while (!test_go)
	186	{
	187	}
	188
	189	for (;;) {
	190	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	191	assert(test_array.a == 8);
8b632bab	192	if (unlikely(rduration))
daddf5b0	193	loop_sleep(rduration);
0ee8bb0a MD	194	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
0ee8bb0a MD	195	nr_reads++;
59d5a406	196	if (unlikely(!test_duration_read()))
0ee8bb0a MD	197	break;
	198	}
	199
	200	tot_nr_reads[tidx] = nr_reads;
cda3c71d	201	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	202	"reader", pthread_self(), (unsigned long)gettid());
	203	return ((void*)1);
	204
	205	}
	206
	207	void thr_writer(void data)
	208	{
	209	unsigned long wtidx = (unsigned long)data;
	210	long tidx;
	211
4bad7d45	212	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	213	"writer", pthread_self(), (unsigned long)gettid());
0ee8bb0a MD	214
2a7ac59d MD	215	set_affinity();
2a7ac59d MD	216
0ee8bb0a MD	217	while (!test_go)
	218	{
	219	}
	220	smp_mb();
	221
	222	for (;;) {
	223	for (tidx = 0; tidx < nr_readers; tidx++) {
	224	pthread_mutex_lock(&per_thread_lock[tidx].lock);
	225	}
2b4e4125	226	test_array.a = 0;
0ee8bb0a	227	test_array.a = 8;
f120cc10	228	for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
0ee8bb0a MD	229	pthread_mutex_unlock(&per_thread_lock[tidx].lock);
	230	}
	231	nr_writes++;
59d5a406	232	if (unlikely(!test_duration_write()))
0ee8bb0a	233	break;
59d5a406	234	if (unlikely(wdelay))
9e31d0f0	235	loop_sleep(wdelay);
0ee8bb0a MD	236	}
0ee8bb0a MD	237
4bad7d45	238	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	239	"writer", pthread_self(), (unsigned long)gettid());
	240	tot_nr_writes[wtidx] = nr_writes;
	241	return ((void*)2);
	242	}
	243
	244	void show_usage(int argc, char **argv)
	245	{
	246	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	247	#ifdef DEBUG_YIELD
	248	printf(" [-r] [-w] (yield reader and/or writer)");
	249	#endif
	250	printf(" [-d delay] (writer period (us))");
daddf5b0	251	printf(" [-c duration] (reader C.S. duration (in loops))");
4bad7d45	252	printf(" [-v] (verbose output)");
9e97e478	253	printf(" [-a cpu#] [-a cpu#]... (affinity)");
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;
	262	unsigned long long count_reader, count_writer;
	263	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	264	int i, a;
0ee8bb0a MD	265
	266	if (argc < 4) {
	267	show_usage(argc, argv);
	268	return -1;
	269	}
	270	smp_mb();
	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	}
	283
	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]) {
	294	#ifdef DEBUG_YIELD
	295	case 'r':
	296	yield_active \|= YIELD_READ;
	297	break;
	298	case 'w':
	299	yield_active \|= YIELD_WRITE;
	300	break;
	301	#endif
9e97e478 MD	302	case 'a':
	303	if (argc < i + 2) {
	304	show_usage(argc, argv);
	305	return -1;
	306	}
	307	a = atoi(argv[++i]);
2a7ac59d	308	cpu_affinities[next_aff++] = a;
9e97e478	309	use_affinity = 1;
4bad7d45	310	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	311	break;
8b632bab MD	312	case 'c':
	313	if (argc < i + 2) {
	314	show_usage(argc, argv);
	315	return -1;
	316	}
9e31d0f0	317	rduration = atol(argv[++i]);
8b632bab	318	break;
0ee8bb0a MD	319	case 'd':
	320	if (argc < i + 2) {
	321	show_usage(argc, argv);
	322	return -1;
	323	}
9e31d0f0	324	wdelay = atol(argv[++i]);
0ee8bb0a	325	break;
4bad7d45 MD	326	case 'v':
	327	verbose_mode = 1;
	328	break;
0ee8bb0a MD	329	}
	330	}
	331
4bad7d45	332	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
0ee8bb0a	333	duration, nr_readers, nr_writers);
9e31d0f0	334	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	335	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	336	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
0ee8bb0a MD	337	"main", pthread_self(), (unsigned long)gettid());
	338
	339	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	340	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	341	count_reader = malloc(sizeof(count_reader) nr_readers);
	342	count_writer = malloc(sizeof(count_writer) nr_writers);
	343	tot_nr_reads = malloc(sizeof(tot_nr_reads) nr_readers);
	344	tot_nr_writes = malloc(sizeof(tot_nr_writes) nr_writers);
	345	per_thread_lock = malloc(sizeof(per_thread_lock) nr_readers);
	346
2a7ac59d MD	347	next_aff = 0;
2a7ac59d MD	348
0ee8bb0a MD	349	for (i = 0; i < nr_readers; i++) {
	350	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	351	(void *)(long)i);
	352	if (err != 0)
	353	exit(1);
	354	}
	355	for (i = 0; i < nr_writers; i++) {
	356	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	357	(void *)(long)i);
	358	if (err != 0)
	359	exit(1);
	360	}
	361
0ee8bb0a MD	362	smp_mb();
0ee8bb0a MD	363
78efb485 MD	364	test_go = 1;
	365
	366	sleep(duration);
	367
	368	test_stop = 1;
	369
0ee8bb0a MD	370	for (i = 0; i < nr_readers; i++) {
	371	err = pthread_join(tid_reader[i], &tret);
	372	if (err != 0)
	373	exit(1);
	374	tot_reads += tot_nr_reads[i];
	375	}
	376	for (i = 0; i < nr_writers; i++) {
	377	err = pthread_join(tid_writer[i], &tret);
	378	if (err != 0)
	379	exit(1);
	380	tot_writes += tot_nr_writes[i];
	381	}
4bad7d45 MD	382
4bad7d45 MD	383	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
0ee8bb0a	384	tot_writes);
6a190115	385	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu "
cda3c71d	386	"nr_writers %3u "
9e31d0f0	387	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
4bad7d45 MD	388	argv[0], duration, nr_readers, rduration,
	389	nr_writers, wdelay, tot_reads, tot_writes,
	390	tot_reads + tot_writes);
	391
0ee8bb0a MD	392	free(tid_reader);
	393	free(tid_writer);
	394	free(count_reader);
	395	free(count_writer);
	396	free(tot_nr_reads);
	397	free(tot_nr_writes);
	398	free(per_thread_lock);
	399	return 0;
	400	}