[urcu.git] / tests / 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.
 */

#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 rcu_debug_yield_read()
#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);
#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;
	int *local_ptr;

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

	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, 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;
	int *new, *old;

	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 (;;) {
		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, 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;
	}

	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':
			rcu_yield_active |= RCU_RCU_YIELD_READ;
			break;
		case 'w':
			rcu_yield_active |= RCU_RCU_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(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
	23	#define _GNU_SOURCE
	24	#include "../config.h"
	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>
de10a585 MD	34	#include <errno.h>
	35
	36	#include <urcu/arch.h>
bd252a04	37	#include <urcu/tls-compat.h>
2953b501	38	#include "cpuset.h"
de10a585 MD	39
	40	#ifdef __linux__
	41	#include <syscall.h>
	42	#endif
	43
	44	/* hardcoded number of CPUs */
	45	#define NR_CPUS 16384
	46
	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
1de4df4b	65	#define rcu_debug_yield_read()
de10a585 MD	66	#endif
	67	#include "urcu-qsbr.h"
	68
de10a585 MD	69	static volatile int test_go, test_stop;
	70
	71	static unsigned long wdelay;
	72
bcc74df3	73	static int *test_rcu_pointer;
de10a585 MD	74
	75	static unsigned long duration;
	76
	77	/* read-side C.S. duration, in loops */
	78	static unsigned long rduration;
	79
	80	/* write-side C.S. duration, in loops */
	81	static unsigned long wduration;
	82
ab0aacbe	83	static inline void loop_sleep(unsigned long loops)
de10a585	84	{
ab0aacbe	85	while (loops-- != 0)
de10a585 MD	86	caa_cpu_relax();
	87	}
	88
	89	static int verbose_mode;
	90
	91	#define printf_verbose(fmt, args...) \
	92	do { \
	93	if (verbose_mode) \
	94	printf(fmt, args); \
	95	} while (0)
	96
	97	static unsigned int cpu_affinities[NR_CPUS];
	98	static unsigned int next_aff = 0;
	99	static int use_affinity = 0;
	100
	101	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	102
de10a585 MD	103	static void set_affinity(void)
de10a585 MD	104	{
95bc7fb9	105	#if HAVE_SCHED_SETAFFINITY
de10a585	106	cpu_set_t mask;
95bc7fb9 MD	107	int cpu, ret;
95bc7fb9 MD	108	#endif /* HAVE_SCHED_SETAFFINITY */
de10a585 MD	109
	110	if (!use_affinity)
	111	return;
	112
	113	#if HAVE_SCHED_SETAFFINITY
	114	ret = pthread_mutex_lock(&affinity_mutex);
	115	if (ret) {
	116	perror("Error in pthread mutex lock");
	117	exit(-1);
	118	}
	119	cpu = cpu_affinities[next_aff++];
	120	ret = pthread_mutex_unlock(&affinity_mutex);
	121	if (ret) {
	122	perror("Error in pthread mutex unlock");
	123	exit(-1);
	124	}
	125	CPU_ZERO(&mask);
	126	CPU_SET(cpu, &mask);
	127	#if SCHED_SETAFFINITY_ARGS == 2
	128	sched_setaffinity(0, &mask);
	129	#else
	130	sched_setaffinity(0, sizeof(mask), &mask);
	131	#endif
	132	#endif /* HAVE_SCHED_SETAFFINITY */
	133	}
	134
	135	/*
	136	* returns 0 if test should end.
	137	*/
	138	static int test_duration_write(void)
	139	{
	140	return !test_stop;
	141	}
	142
	143	static int test_duration_read(void)
	144	{
	145	return !test_stop;
	146	}
	147
bd252a04 MD	148	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	149	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
de10a585 MD	150
	151	static unsigned int nr_readers;
	152	static unsigned int nr_writers;
	153
	154	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	155
	156	void rcu_copy_mutex_lock(void)
	157	{
	158	int ret;
	159	ret = pthread_mutex_lock(&rcu_copy_mutex);
	160	if (ret) {
	161	perror("Error in pthread mutex lock");
	162	exit(-1);
	163	}
	164	}
	165
	166	void rcu_copy_mutex_unlock(void)
	167	{
	168	int ret;
	169
	170	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	171	if (ret) {
	172	perror("Error in pthread mutex unlock");
	173	exit(-1);
	174	}
	175	}
	176
de10a585 MD	177	void thr_reader(void _count)
	178	{
	179	unsigned long long *count = _count;
bcc74df3	180	int *local_ptr;
de10a585 MD	181
de10a585 MD	182	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
6ff854ac MD	183	"reader", (unsigned long) pthread_self(),
6ff854ac MD	184	(unsigned long) gettid());
de10a585 MD	185
	186	set_affinity();
	187
	188	rcu_register_thread();
	189
882f3357 MD	190	assert(rcu_read_ongoing());
	191	rcu_thread_offline();
	192	assert(!rcu_read_ongoing());
	193	rcu_thread_online();
	194
de10a585 MD	195	while (!test_go)
	196	{
	197	}
	198	cmm_smp_mb();
	199
	200	for (;;) {
	201	rcu_read_lock();
882f3357	202	assert(rcu_read_ongoing());
de10a585	203	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	204	rcu_debug_yield_read();
de10a585	205	if (local_ptr)
bcc74df3	206	assert(*local_ptr == 8);
a0b7f7ea	207	if (caa_unlikely(rduration))
de10a585 MD	208	loop_sleep(rduration);
de10a585 MD	209	rcu_read_unlock();
bd252a04	210	URCU_TLS(nr_reads)++;
de10a585	211	/* QS each 1024 reads */
bd252a04	212	if (caa_unlikely((URCU_TLS(nr_reads) & ((1 << 10) - 1)) == 0))
de10a585	213	rcu_quiescent_state();
a0b7f7ea	214	if (caa_unlikely(!test_duration_read()))
de10a585 MD	215	break;
	216	}
	217
	218	rcu_unregister_thread();
	219
	220	/* test extra thread registration */
	221	rcu_register_thread();
	222	rcu_unregister_thread();
	223
bd252a04	224	*count = URCU_TLS(nr_reads);
de10a585	225	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
6ff854ac MD	226	"reader", (unsigned long) pthread_self(),
6ff854ac MD	227	(unsigned long) gettid());
de10a585 MD	228	return ((void*)1);
	229
	230	}
	231
	232	void thr_writer(void _count)
	233	{
	234	unsigned long long *count = _count;
bcc74df3	235	int new, old;
de10a585 MD	236
de10a585 MD	237	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
6ff854ac MD	238	"writer", (unsigned long) pthread_self(),
6ff854ac MD	239	(unsigned long) gettid());
de10a585 MD	240
	241	set_affinity();
	242
	243	while (!test_go)
	244	{
	245	}
	246	cmm_smp_mb();
	247
	248	for (;;) {
bcc74df3 MD	249	new = malloc(sizeof(int));
	250	assert(new);
	251	*new = 8;
de10a585	252	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	253	if (caa_unlikely(wduration))
de10a585 MD	254	loop_sleep(wduration);
de10a585 MD	255	synchronize_rcu();
de10a585	256	if (old)
bcc74df3 MD	257	*old = 0;
bcc74df3 MD	258	free(old);
bd252a04	259	URCU_TLS(nr_writes)++;
a0b7f7ea	260	if (caa_unlikely(!test_duration_write()))
de10a585	261	break;
a0b7f7ea	262	if (caa_unlikely(wdelay))
de10a585 MD	263	loop_sleep(wdelay);
	264	}
	265
	266	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
6ff854ac MD	267	"writer", (unsigned long) pthread_self(),
6ff854ac MD	268	(unsigned long) gettid());
bd252a04	269	*count = URCU_TLS(nr_writes);
de10a585 MD	270	return ((void*)2);
	271	}
	272
	273	void show_usage(int argc, char **argv)
	274	{
	275	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	276	#ifdef DEBUG_YIELD
	277	printf(" [-r] [-w] (yield reader and/or writer)");
	278	#endif
	279	printf(" [-d delay] (writer period (us))");
	280	printf(" [-c duration] (reader C.S. duration (in loops))");
	281	printf(" [-e duration] (writer C.S. duration (in loops))");
	282	printf(" [-v] (verbose output)");
	283	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	284	printf("\n");
	285	}
	286
	287	int main(int argc, char **argv)
	288	{
	289	int err;
	290	pthread_t tid_reader, tid_writer;
	291	void *tret;
	292	unsigned long long count_reader, count_writer;
	293	unsigned long long tot_reads = 0, tot_writes = 0;
	294	int i, a;
	295
	296	if (argc < 4) {
	297	show_usage(argc, argv);
	298	return -1;
	299	}
	300
	301	err = sscanf(argv[1], "%u", &nr_readers);
	302	if (err != 1) {
	303	show_usage(argc, argv);
	304	return -1;
	305	}
	306
	307	err = sscanf(argv[2], "%u", &nr_writers);
	308	if (err != 1) {
	309	show_usage(argc, argv);
	310	return -1;
	311	}
	312
	313	err = sscanf(argv[3], "%lu", &duration);
	314	if (err != 1) {
	315	show_usage(argc, argv);
	316	return -1;
	317	}
	318
	319	for (i = 4; i < argc; i++) {
	320	if (argv[i][0] != '-')
	321	continue;
	322	switch (argv[i][1]) {
	323	#ifdef DEBUG_YIELD
	324	case 'r':
1de4df4b	325	rcu_yield_active \|= RCU_RCU_YIELD_READ;
de10a585 MD	326	break;
de10a585 MD	327	case 'w':
1de4df4b	328	rcu_yield_active \|= RCU_RCU_YIELD_WRITE;
de10a585 MD	329	break;
	330	#endif
	331	case 'a':
	332	if (argc < i + 2) {
	333	show_usage(argc, argv);
	334	return -1;
	335	}
	336	a = atoi(argv[++i]);
	337	cpu_affinities[next_aff++] = a;
	338	use_affinity = 1;
	339	printf_verbose("Adding CPU %d affinity\n", a);
	340	break;
	341	case 'c':
	342	if (argc < i + 2) {
	343	show_usage(argc, argv);
	344	return -1;
	345	}
	346	rduration = atol(argv[++i]);
	347	break;
	348	case 'd':
	349	if (argc < i + 2) {
	350	show_usage(argc, argv);
	351	return -1;
	352	}
	353	wdelay = atol(argv[++i]);
	354	break;
	355	case 'e':
	356	if (argc < i + 2) {
	357	show_usage(argc, argv);
	358	return -1;
	359	}
	360	wduration = atol(argv[++i]);
	361	break;
	362	case 'v':
	363	verbose_mode = 1;
	364	break;
	365	}
	366	}
	367
	368	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	369	duration, nr_readers, nr_writers);
	370	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	371	printf_verbose("Reader duration : %lu loops.\n", rduration);
	372	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
6ff854ac MD	373	"main", (unsigned long) pthread_self(),
6ff854ac MD	374	(unsigned long) gettid());
de10a585	375
de10a585 MD	376	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	377	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	378	count_reader = malloc(sizeof(count_reader) nr_readers);
	379	count_writer = malloc(sizeof(count_writer) nr_writers);
	380
	381	next_aff = 0;
	382
	383	for (i = 0; i < nr_readers; i++) {
	384	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	385	&count_reader[i]);
	386	if (err != 0)
	387	exit(1);
	388	}
	389	for (i = 0; i < nr_writers; i++) {
	390	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	391	&count_writer[i]);
	392	if (err != 0)
	393	exit(1);
	394	}
	395
	396	cmm_smp_mb();
	397
	398	test_go = 1;
	399
	400	sleep(duration);
	401
	402	test_stop = 1;
	403
	404	for (i = 0; i < nr_readers; i++) {
	405	err = pthread_join(tid_reader[i], &tret);
	406	if (err != 0)
	407	exit(1);
	408	tot_reads += count_reader[i];
	409	}
	410	for (i = 0; i < nr_writers; i++) {
	411	err = pthread_join(tid_writer[i], &tret);
	412	if (err != 0)
	413	exit(1);
	414	tot_writes += count_writer[i];
	415	}
	416
	417	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	418	tot_writes);
	419	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
	420	"nr_writers %3u "
	421	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
	422	argv[0], duration, nr_readers, rduration, wduration,
	423	nr_writers, wdelay, tot_reads, tot_writes,
	424	tot_reads + tot_writes);
bcc74df3	425	free(test_rcu_pointer);
de10a585 MD	426	free(tid_reader);
	427	free(tid_writer);
	428	free(count_reader);
	429	free(count_writer);
	430	return 0;
	431	}