[userspace-rcu.git] / tests / benchmark / test_urcu_defer.c

/*
 * test_urcu_defer.c
 *
 * Userspace RCU library - test program (with automatic reclamation)
 *
 * 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 "cpuset.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.h>
#include <urcu-defer.h>

struct test_array {
	int a;
};

static volatile int test_go, test_stop;

static unsigned long wdelay;

static struct test_array *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)
{
#ifdef HAVE_SCHED_SETAFFINITY
	cpu_set_t mask;
	int cpu, ret;
#endif /* HAVE_SCHED_SETAFFINITY */

	if (!use_affinity)
		return;

#ifdef 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 int nr_readers;
static unsigned int nr_writers;

pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;

static
void *thr_reader(void *_count)
{
	unsigned long long *count = _count;
	struct test_array *local_ptr;

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

	set_affinity();

	rcu_register_thread();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		rcu_read_lock();
		local_ptr = rcu_dereference(test_rcu_pointer);
		rcu_debug_yield_read();
		if (local_ptr)
			assert(local_ptr->a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		rcu_read_unlock();
		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	rcu_unregister_thread();

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

}

static void test_cb2(void *data __attribute__((unused)))
{
}

static void test_cb1(void *data __attribute__((unused)))
{
}

static
void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;
	struct test_array *new, *old = NULL;
	int ret;

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

	set_affinity();

	ret = rcu_defer_register_thread();
	if (ret) {
		printf("Error in rcu_defer_register_thread\n");
		exit(-1);
	}

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		new = malloc(sizeof(*new));
		new->a = 8;
		old = rcu_xchg_pointer(&test_rcu_pointer, new);
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		defer_rcu(free, old);
		defer_rcu(test_cb1, old);
		defer_rcu(test_cb1, (void *)-2L);
		defer_rcu(test_cb1, (void *)-2L);
		defer_rcu(test_cb1, old);
		defer_rcu(test_cb2, (void *)-2L);
		defer_rcu(test_cb2, (void *)-4L);
		defer_rcu(test_cb2, (void *)-2L);
		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	rcu_defer_unregister_thread();

	printf_verbose("thread_end %s, tid %lu\n",
			"writer", urcu_get_thread_id());
	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
	return ((void*)2);
}

static
void show_usage(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;
	unsigned long long tot_reads = 0, tot_writes = 0;
	int i, a;
	unsigned int i_thr;

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

	err = sscanf(argv[1], "%u", &nr_readers);
	if (err != 1) {
		show_usage(argv);
		return -1;
	}

	err = sscanf(argv[2], "%u", &nr_writers);
	if (err != 1) {
		show_usage(argv);
		return -1;
	}

	err = sscanf(argv[3], "%lu", &duration);
	if (err != 1) {
		show_usage(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(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(argv);
				return -1;
			}
			rduration = atol(argv[++i]);
			break;
		case 'd':
			if (argc < i + 2) {
				show_usage(argv);
				return -1;
			}
			wdelay = atol(argv[++i]);
			break;
		case 'e':
			if (argc < i + 2) {
				show_usage(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));
	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));

	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,
				     (void *)(long)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 += tot_nr_writes[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(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(tot_nr_writes);

	return 0;
}
Commit	Line	Data
90075a50	1	/*
786ee85b	2	* test_urcu_defer.c
90075a50 MD	3	*
	4	* Userspace RCU library - test program (with automatic reclamation)
	5	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
90075a50 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
90075a50 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>
94b343fd	32	#include <errno.h>
90075a50	33
ec4e58a3	34	#include <urcu/arch.h>
bd252a04	35	#include <urcu/tls-compat.h>
2953b501	36	#include "cpuset.h"
94df6318	37	#include "thread-id.h"
2650042a	38	#include "../common/debug-yield.h"
65fcc7e9	39
90075a50 MD	40	/* hardcoded number of CPUs */
	41	#define NR_CPUS 16384
	42
90075a50 MD	43	#ifndef DYNAMIC_LINK_TEST
90075a50 MD	44	#define _LGPL_SOURCE
90075a50	45	#endif
ec4e58a3 MD	46	#include <urcu.h>
ec4e58a3 MD	47	#include <urcu-defer.h>
90075a50 MD	48
	49	struct test_array {
	50	int a;
	51	};
	52
	53	static volatile int test_go, test_stop;
	54
	55	static unsigned long wdelay;
	56
	57	static struct test_array *test_rcu_pointer;
	58
	59	static unsigned long duration;
	60
	61	/* read-side C.S. duration, in loops */
	62	static unsigned long rduration;
	63
31b598e0 MD	64	/* write-side C.S. duration, in loops */
	65	static unsigned long wduration;
	66
ab0aacbe	67	static inline void loop_sleep(unsigned long loops)
90075a50	68	{
ab0aacbe	69	while (loops-- != 0)
06f22bdb	70	caa_cpu_relax();
90075a50 MD	71	}
	72
	73	static int verbose_mode;
	74
	75	#define printf_verbose(fmt, args...) \
	76	do { \
	77	if (verbose_mode) \
	78	printf(fmt, args); \
	79	} while (0)
	80
	81	static unsigned int cpu_affinities[NR_CPUS];
	82	static unsigned int next_aff = 0;
	83	static int use_affinity = 0;
	84
	85	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	86
	87	static void set_affinity(void)
	88	{
1a93fffc	89	#ifdef HAVE_SCHED_SETAFFINITY
90075a50	90	cpu_set_t mask;
95bc7fb9 MD	91	int cpu, ret;
95bc7fb9 MD	92	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 MD	93
	94	if (!use_affinity)
	95	return;
	96
1a93fffc	97	#ifdef HAVE_SCHED_SETAFFINITY
90075a50 MD	98	ret = pthread_mutex_lock(&affinity_mutex);
	99	if (ret) {
	100	perror("Error in pthread mutex lock");
	101	exit(-1);
	102	}
	103	cpu = cpu_affinities[next_aff++];
	104	ret = pthread_mutex_unlock(&affinity_mutex);
	105	if (ret) {
	106	perror("Error in pthread mutex unlock");
	107	exit(-1);
	108	}
d8540fc5	109
90075a50 MD	110	CPU_ZERO(&mask);
90075a50 MD	111	CPU_SET(cpu, &mask);
d8540fc5 PA	112	#if SCHED_SETAFFINITY_ARGS == 2
	113	sched_setaffinity(0, &mask);
	114	#else
90075a50	115	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	116	#endif
d8540fc5 PA	117	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 MD	118	}
	119
	120	/*
	121	* returns 0 if test should end.
	122	*/
	123	static int test_duration_write(void)
	124	{
	125	return !test_stop;
	126	}
	127
	128	static int test_duration_read(void)
	129	{
	130	return !test_stop;
	131	}
	132
bd252a04 MD	133	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	134	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
90075a50 MD	135
90075a50 MD	136	static
06f22bdb	137	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
90075a50 MD	138
	139	static unsigned int nr_readers;
	140	static unsigned int nr_writers;
	141
	142	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	143
3b4d3084	144	static
90075a50 MD	145	void thr_reader(void _count)
	146	{
	147	unsigned long long *count = _count;
	148	struct test_array *local_ptr;
	149
94df6318 MD	150	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	151	"reader", urcu_get_thread_id());
90075a50 MD	152
	153	set_affinity();
	154
	155	rcu_register_thread();
	156
	157	while (!test_go)
	158	{
	159	}
5481ddb3	160	cmm_smp_mb();
90075a50 MD	161
	162	for (;;) {
	163	rcu_read_lock();
	164	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	165	rcu_debug_yield_read();
90075a50 MD	166	if (local_ptr)
90075a50 MD	167	assert(local_ptr->a == 8);
a0b7f7ea	168	if (caa_unlikely(rduration))
90075a50 MD	169	loop_sleep(rduration);
90075a50 MD	170	rcu_read_unlock();
bd252a04	171	URCU_TLS(nr_reads)++;
a0b7f7ea	172	if (caa_unlikely(!test_duration_read()))
90075a50 MD	173	break;
	174	}
	175
	176	rcu_unregister_thread();
	177
bd252a04	178	*count = URCU_TLS(nr_reads);
94df6318 MD	179	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	180	"reader", urcu_get_thread_id());
90075a50 MD	181	return ((void*)1);
	182
	183	}
	184
5eedd745	185	static void test_cb2(void *data __attribute__((unused)))
804b4375 MD	186	{
	187	}
	188
5eedd745	189	static void test_cb1(void *data __attribute__((unused)))
804b4375 MD	190	{
	191	}
	192
3b4d3084	193	static
90075a50 MD	194	void thr_writer(void data)
	195	{
	196	unsigned long wtidx = (unsigned long)data;
	197	struct test_array new, old = NULL;
6ade67d5	198	int ret;
90075a50	199
94df6318 MD	200	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	201	"writer", urcu_get_thread_id());
90075a50 MD	202
	203	set_affinity();
	204
6ade67d5 MD	205	ret = rcu_defer_register_thread();
	206	if (ret) {
	207	printf("Error in rcu_defer_register_thread\n");
	208	exit(-1);
	209	}
90075a50 MD	210
	211	while (!test_go)
	212	{
	213	}
5481ddb3	214	cmm_smp_mb();
90075a50 MD	215
	216	for (;;) {
	217	new = malloc(sizeof(*new));
	218	new->a = 8;
	219	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	220	if (caa_unlikely(wduration))
31b598e0	221	loop_sleep(wduration);
b4f313b7 MD	222	defer_rcu(free, old);
	223	defer_rcu(test_cb1, old);
	224	defer_rcu(test_cb1, (void *)-2L);
	225	defer_rcu(test_cb1, (void *)-2L);
	226	defer_rcu(test_cb1, old);
	227	defer_rcu(test_cb2, (void *)-2L);
	228	defer_rcu(test_cb2, (void *)-4L);
	229	defer_rcu(test_cb2, (void *)-2L);
bd252a04	230	URCU_TLS(nr_writes)++;
a0b7f7ea	231	if (caa_unlikely(!test_duration_write()))
90075a50	232	break;
a0b7f7ea	233	if (caa_unlikely(wdelay))
90075a50 MD	234	loop_sleep(wdelay);
	235	}
	236
786ee85b	237	rcu_defer_unregister_thread();
90075a50	238
94df6318 MD	239	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	240	"writer", urcu_get_thread_id());
bd252a04	241	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
90075a50 MD	242	return ((void*)2);
	243	}
	244
3b4d3084	245	static
5eedd745	246	void show_usage(char **argv)
90075a50	247	{
06637138 MD	248	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	249	argv[0]);
	250	printf("OPTIONS:\n");
06637138	251	printf(" [-r] [-w] (yield reader and/or writer)\n");
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");
90075a50 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;
	265	unsigned long long *count_reader;
	266	unsigned long long tot_reads = 0, tot_writes = 0;
	267	int i, a;
83e334d0	268	unsigned int i_thr;
90075a50 MD	269
90075a50 MD	270	if (argc < 4) {
5eedd745	271	show_usage(argv);
90075a50 MD	272	return -1;
	273	}
	274
	275	err = sscanf(argv[1], "%u", &nr_readers);
	276	if (err != 1) {
5eedd745	277	show_usage(argv);
90075a50 MD	278	return -1;
	279	}
	280
	281	err = sscanf(argv[2], "%u", &nr_writers);
	282	if (err != 1) {
5eedd745	283	show_usage(argv);
90075a50 MD	284	return -1;
90075a50 MD	285	}
83e334d0	286
90075a50 MD	287	err = sscanf(argv[3], "%lu", &duration);
90075a50 MD	288	if (err != 1) {
5eedd745	289	show_usage(argv);
90075a50 MD	290	return -1;
	291	}
	292
	293	for (i = 4; i < argc; i++) {
	294	if (argv[i][0] != '-')
	295	continue;
	296	switch (argv[i][1]) {
90075a50	297	case 'r':
2650042a	298	rcu_debug_yield_enable(RCU_YIELD_READ);
90075a50 MD	299	break;
90075a50 MD	300	case 'w':
2650042a	301	rcu_debug_yield_enable(RCU_YIELD_WRITE);
90075a50	302	break;
90075a50 MD	303	case 'a':
90075a50 MD	304	if (argc < i + 2) {
5eedd745	305	show_usage(argv);
90075a50 MD	306	return -1;
	307	}
	308	a = atoi(argv[++i]);
	309	cpu_affinities[next_aff++] = a;
	310	use_affinity = 1;
	311	printf_verbose("Adding CPU %d affinity\n", a);
	312	break;
	313	case 'c':
	314	if (argc < i + 2) {
5eedd745	315	show_usage(argv);
90075a50 MD	316	return -1;
	317	}
	318	rduration = atol(argv[++i]);
	319	break;
	320	case 'd':
	321	if (argc < i + 2) {
5eedd745	322	show_usage(argv);
90075a50 MD	323	return -1;
	324	}
	325	wdelay = atol(argv[++i]);
	326	break;
31b598e0 MD	327	case 'e':
31b598e0 MD	328	if (argc < i + 2) {
5eedd745	329	show_usage(argv);
31b598e0 MD	330	return -1;
	331	}
	332	wduration = atol(argv[++i]);
	333	break;
90075a50 MD	334	case 'v':
	335	verbose_mode = 1;
	336	break;
	337	}
	338	}
	339
	340	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	341	duration, nr_readers, nr_writers);
	342	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	343	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	344	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	345	"main", urcu_get_thread_id());
90075a50	346
9aa14175 MD	347	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	348	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	349	count_reader = calloc(nr_readers, sizeof(*count_reader));
	350	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
90075a50 MD	351
	352	next_aff = 0;
	353
83e334d0 MJ	354	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	355	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	356	&count_reader[i_thr]);
90075a50 MD	357	if (err != 0)
	358	exit(1);
	359	}
83e334d0 MJ	360	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	361	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	362	(void *)(long)i_thr);
90075a50 MD	363	if (err != 0)
	364	exit(1);
	365	}
	366
5481ddb3	367	cmm_smp_mb();
90075a50 MD	368
	369	test_go = 1;
	370
	371	sleep(duration);
	372
	373	test_stop = 1;
	374
83e334d0 MJ	375	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	376	err = pthread_join(tid_reader[i_thr], &tret);
90075a50 MD	377	if (err != 0)
90075a50 MD	378	exit(1);
83e334d0	379	tot_reads += count_reader[i_thr];
90075a50	380	}
83e334d0 MJ	381	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	382	err = pthread_join(tid_writer[i_thr], &tret);
90075a50 MD	383	if (err != 0)
90075a50 MD	384	exit(1);
83e334d0	385	tot_writes += tot_nr_writes[i_thr];
90075a50	386	}
83e334d0	387
90075a50 MD	388	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
90075a50 MD	389	tot_writes);
a50a7b43	390	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
90075a50 MD	391	"nr_writers %3u "
90075a50 MD	392	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	393	argv[0], duration, nr_readers, rduration, wduration,
90075a50 MD	394	nr_writers, wdelay, tot_reads, tot_writes,
	395	tot_reads + tot_writes);
	396	free(tid_reader);
	397	free(tid_writer);
	398	free(count_reader);
	399	free(tot_nr_writes);
	400
	401	return 0;
	402	}