[urcu.git] / tests / benchmark / test_urcu_qsbr.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.
 */

#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 "thread-id.h"
#include "../common/debug-yield.h"

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

#ifndef DYNAMIC_LINK_TEST
#define _LGPL_SOURCE
#endif
#include "urcu-qsbr.h"

static volatile int test_go, test_stop;

static unsigned long wdelay;

static int *test_rcu_pointer;

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);
	sched_setaffinity(0, sizeof(mask), &mask);
#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;
	int *local_ptr;

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

	set_affinity();

	rcu_register_thread();

	assert(rcu_read_ongoing());
	rcu_thread_offline();
	assert(!rcu_read_ongoing());
	rcu_thread_online();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		rcu_read_lock();
		assert(rcu_read_ongoing());
		local_ptr = rcu_dereference(test_rcu_pointer);
		rcu_debug_yield_read();
		if (local_ptr)
			assert(*local_ptr == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		rcu_read_unlock();
		URCU_TLS(nr_reads)++;
		/* QS each 1024 reads */
		if (caa_unlikely((URCU_TLS(nr_reads) & ((1 << 10) - 1)) == 0))
			rcu_quiescent_state();
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	rcu_unregister_thread();

	/* test extra thread registration */
	rcu_register_thread();
	rcu_unregister_thread();

	*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;
	int *new, *old;

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		new = malloc(sizeof(int));
		assert(new);
		*new = 8;
		old = rcu_xchg_pointer(&test_rcu_pointer, new);
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		synchronize_rcu();
		if (old)
			*old = 0;
		free(old);
		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("	[-r] [-w] (yield reader and/or writer)\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;
	unsigned int i_thr;

	if (argc < 4) {
		show_usage(argc, argv);
		return -1;
	}

	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 'r':
			rcu_debug_yield_enable(RCU_YIELD_READ);
			break;
		case 'w':
			rcu_debug_yield_enable(RCU_YIELD_WRITE);
			break;
		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 = 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_thr = 0; i_thr < nr_readers; i_thr++) {
		err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
				     &count_reader[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,
				     &count_writer[i_thr]);
		if (err != 0)
			exit(1);
	}

	cmm_smp_mb();

	test_go = 1;

	sleep(duration);

	test_stop = 1;

	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 += count_reader[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 += count_writer[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(test_rcu_pointer);
	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	return 0;
}
Commit	Line	Data
de10a585 MD	1	/*
	2	* test_urcu.c
	3	*
	4	* Userspace RCU library - test program
	5	*
	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	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
de10a585 MD	23	#include <stdio.h>
	24	#include <pthread.h>
	25	#include <stdlib.h>
	26	#include <string.h>
	27	#include <sys/types.h>
	28	#include <sys/wait.h>
	29	#include <unistd.h>
	30	#include <stdio.h>
	31	#include <assert.h>
de10a585 MD	32	#include <errno.h>
	33
	34	#include <urcu/arch.h>
bd252a04	35	#include <urcu/tls-compat.h>
94df6318	36	#include "thread-id.h"
2650042a	37	#include "../common/debug-yield.h"
de10a585 MD	38
	39	/* hardcoded number of CPUs */
	40	#define NR_CPUS 16384
	41
de10a585 MD	42	#ifndef DYNAMIC_LINK_TEST
de10a585 MD	43	#define _LGPL_SOURCE
de10a585 MD	44	#endif
	45	#include "urcu-qsbr.h"
	46
de10a585 MD	47	static volatile int test_go, test_stop;
	48
	49	static unsigned long wdelay;
	50
bcc74df3	51	static int *test_rcu_pointer;
de10a585 MD	52
	53	static unsigned long duration;
	54
	55	/* read-side C.S. duration, in loops */
	56	static unsigned long rduration;
	57
	58	/* write-side C.S. duration, in loops */
	59	static unsigned long wduration;
	60
ab0aacbe	61	static inline void loop_sleep(unsigned long loops)
de10a585	62	{
ab0aacbe	63	while (loops-- != 0)
de10a585 MD	64	caa_cpu_relax();
	65	}
	66
	67	static int verbose_mode;
	68
	69	#define printf_verbose(fmt, args...) \
	70	do { \
	71	if (verbose_mode) \
	72	printf(fmt, args); \
	73	} while (0)
	74
	75	static unsigned int cpu_affinities[NR_CPUS];
	76	static unsigned int next_aff = 0;
	77	static int use_affinity = 0;
	78
	79	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	80
de10a585 MD	81	static void set_affinity(void)
de10a585 MD	82	{
95bc7fb9	83	#if HAVE_SCHED_SETAFFINITY
de10a585	84	cpu_set_t mask;
95bc7fb9 MD	85	int cpu, ret;
95bc7fb9 MD	86	#endif /* HAVE_SCHED_SETAFFINITY */
de10a585 MD	87
	88	if (!use_affinity)
	89	return;
	90
	91	#if HAVE_SCHED_SETAFFINITY
	92	ret = pthread_mutex_lock(&affinity_mutex);
	93	if (ret) {
	94	perror("Error in pthread mutex lock");
	95	exit(-1);
	96	}
	97	cpu = cpu_affinities[next_aff++];
	98	ret = pthread_mutex_unlock(&affinity_mutex);
	99	if (ret) {
	100	perror("Error in pthread mutex unlock");
	101	exit(-1);
	102	}
	103	CPU_ZERO(&mask);
	104	CPU_SET(cpu, &mask);
de10a585	105	sched_setaffinity(0, sizeof(mask), &mask);
de10a585 MD	106	#endif /* HAVE_SCHED_SETAFFINITY */
	107	}
	108
	109	/*
	110	* returns 0 if test should end.
	111	*/
	112	static int test_duration_write(void)
	113	{
	114	return !test_stop;
	115	}
	116
	117	static int test_duration_read(void)
	118	{
	119	return !test_stop;
	120	}
	121
bd252a04 MD	122	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	123	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
de10a585 MD	124
	125	static unsigned int nr_readers;
	126	static unsigned int nr_writers;
	127
	128	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	129
	130	void rcu_copy_mutex_lock(void)
	131	{
	132	int ret;
	133	ret = pthread_mutex_lock(&rcu_copy_mutex);
	134	if (ret) {
	135	perror("Error in pthread mutex lock");
	136	exit(-1);
	137	}
	138	}
	139
	140	void rcu_copy_mutex_unlock(void)
	141	{
	142	int ret;
	143
	144	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	145	if (ret) {
	146	perror("Error in pthread mutex unlock");
	147	exit(-1);
	148	}
	149	}
	150
de10a585 MD	151	void thr_reader(void _count)
	152	{
	153	unsigned long long *count = _count;
bcc74df3	154	int *local_ptr;
de10a585	155
94df6318 MD	156	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	157	"reader", urcu_get_thread_id());
de10a585 MD	158
	159	set_affinity();
	160
	161	rcu_register_thread();
	162
882f3357 MD	163	assert(rcu_read_ongoing());
	164	rcu_thread_offline();
	165	assert(!rcu_read_ongoing());
	166	rcu_thread_online();
	167
de10a585 MD	168	while (!test_go)
	169	{
	170	}
	171	cmm_smp_mb();
	172
	173	for (;;) {
	174	rcu_read_lock();
882f3357	175	assert(rcu_read_ongoing());
de10a585	176	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	177	rcu_debug_yield_read();
de10a585	178	if (local_ptr)
bcc74df3	179	assert(*local_ptr == 8);
a0b7f7ea	180	if (caa_unlikely(rduration))
de10a585 MD	181	loop_sleep(rduration);
de10a585 MD	182	rcu_read_unlock();
bd252a04	183	URCU_TLS(nr_reads)++;
de10a585	184	/* QS each 1024 reads */
bd252a04	185	if (caa_unlikely((URCU_TLS(nr_reads) & ((1 << 10) - 1)) == 0))
de10a585	186	rcu_quiescent_state();
a0b7f7ea	187	if (caa_unlikely(!test_duration_read()))
de10a585 MD	188	break;
	189	}
	190
	191	rcu_unregister_thread();
	192
	193	/* test extra thread registration */
	194	rcu_register_thread();
	195	rcu_unregister_thread();
	196
bd252a04	197	*count = URCU_TLS(nr_reads);
94df6318 MD	198	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	199	"reader", urcu_get_thread_id());
de10a585 MD	200	return ((void*)1);
	201
	202	}
	203
	204	void thr_writer(void _count)
	205	{
	206	unsigned long long *count = _count;
bcc74df3	207	int new, old;
de10a585	208
94df6318 MD	209	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	210	"writer", urcu_get_thread_id());
de10a585 MD	211
	212	set_affinity();
	213
	214	while (!test_go)
	215	{
	216	}
	217	cmm_smp_mb();
	218
	219	for (;;) {
bcc74df3 MD	220	new = malloc(sizeof(int));
	221	assert(new);
	222	*new = 8;
de10a585	223	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	224	if (caa_unlikely(wduration))
de10a585 MD	225	loop_sleep(wduration);
de10a585 MD	226	synchronize_rcu();
de10a585	227	if (old)
bcc74df3 MD	228	*old = 0;
bcc74df3 MD	229	free(old);
bd252a04	230	URCU_TLS(nr_writes)++;
a0b7f7ea	231	if (caa_unlikely(!test_duration_write()))
de10a585	232	break;
a0b7f7ea	233	if (caa_unlikely(wdelay))
de10a585 MD	234	loop_sleep(wdelay);
	235	}
	236
94df6318 MD	237	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	238	"writer", urcu_get_thread_id());
bd252a04	239	*count = URCU_TLS(nr_writes);
de10a585 MD	240	return ((void*)2);
	241	}
	242
	243	void show_usage(int argc, char **argv)
	244	{
06637138 MD	245	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	246	argv[0]);
	247	printf("OPTIONS:\n");
06637138	248	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	249	printf(" [-d delay] (writer period (us))\n");
	250	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	251	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	252	printf(" [-v] (verbose output)\n");
	253	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
de10a585 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;
	264	int i, a;
83e334d0	265	unsigned int i_thr;
de10a585 MD	266
	267	if (argc < 4) {
	268	show_usage(argc, argv);
	269	return -1;
	270	}
	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	}
83e334d0	283
de10a585 MD	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]) {
de10a585	294	case 'r':
2650042a	295	rcu_debug_yield_enable(RCU_YIELD_READ);
de10a585 MD	296	break;
de10a585 MD	297	case 'w':
2650042a	298	rcu_debug_yield_enable(RCU_YIELD_WRITE);
de10a585	299	break;
de10a585 MD	300	case 'a':
	301	if (argc < i + 2) {
	302	show_usage(argc, argv);
	303	return -1;
	304	}
	305	a = atoi(argv[++i]);
	306	cpu_affinities[next_aff++] = a;
	307	use_affinity = 1;
	308	printf_verbose("Adding CPU %d affinity\n", a);
	309	break;
	310	case 'c':
	311	if (argc < i + 2) {
	312	show_usage(argc, argv);
	313	return -1;
	314	}
	315	rduration = atol(argv[++i]);
	316	break;
	317	case 'd':
	318	if (argc < i + 2) {
	319	show_usage(argc, argv);
	320	return -1;
	321	}
	322	wdelay = atol(argv[++i]);
	323	break;
	324	case 'e':
	325	if (argc < i + 2) {
	326	show_usage(argc, argv);
	327	return -1;
	328	}
	329	wduration = atol(argv[++i]);
	330	break;
	331	case 'v':
	332	verbose_mode = 1;
	333	break;
	334	}
	335	}
	336
	337	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	338	duration, nr_readers, nr_writers);
	339	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	340	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	341	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	342	"main", urcu_get_thread_id());
de10a585	343
9aa14175 MD	344	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	345	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	346	count_reader = calloc(nr_readers, sizeof(*count_reader));
	347	count_writer = calloc(nr_writers, sizeof(*count_writer));
de10a585 MD	348
	349	next_aff = 0;
	350
83e334d0 MJ	351	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	352	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	353	&count_reader[i_thr]);
de10a585 MD	354	if (err != 0)
	355	exit(1);
	356	}
83e334d0 MJ	357	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	358	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	359	&count_writer[i_thr]);
de10a585 MD	360	if (err != 0)
	361	exit(1);
	362	}
	363
	364	cmm_smp_mb();
	365
	366	test_go = 1;
	367
	368	sleep(duration);
	369
	370	test_stop = 1;
	371
83e334d0 MJ	372	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	373	err = pthread_join(tid_reader[i_thr], &tret);
de10a585 MD	374	if (err != 0)
de10a585 MD	375	exit(1);
83e334d0	376	tot_reads += count_reader[i_thr];
de10a585	377	}
83e334d0 MJ	378	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	379	err = pthread_join(tid_writer[i_thr], &tret);
de10a585 MD	380	if (err != 0)
de10a585 MD	381	exit(1);
83e334d0	382	tot_writes += count_writer[i_thr];
de10a585	383	}
83e334d0	384
de10a585 MD	385	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	386	tot_writes);
	387	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
	388	"nr_writers %3u "
	389	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
	390	argv[0], duration, nr_readers, rduration, wduration,
	391	nr_writers, wdelay, tot_reads, tot_writes,
	392	tot_reads + tot_writes);
bcc74df3	393	free(test_rcu_pointer);
de10a585 MD	394	free(tid_reader);
	395	free(tid_writer);
	396	free(count_reader);
	397	free(count_writer);
	398	return 0;
	399	}