[urcu.git] / tests / test_urcu.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.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();

	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 == 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();

	/* 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_YIELD_READ;
			break;
		case 'w':
			rcu_yield_active |= 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
b257a10b 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>
b257a10b	7	*
af02d47e MD	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.
b257a10b MD	21	*/
b257a10b MD	22
9e97e478	23	#define _GNU_SOURCE
d8540fc5	24	#include "../config.h"
ac260fd9	25	#include <stdio.h>
f69f195a MD	26	#include <pthread.h>
f69f195a MD	27	#include <stdlib.h>
41718ff9	28	#include <string.h>
f69f195a MD	29	#include <sys/types.h>
	30	#include <sys/wait.h>
	31	#include <unistd.h>
	32	#include <stdio.h>
41718ff9	33	#include <assert.h>
94b343fd	34	#include <errno.h>
87bd15cd	35
ec4e58a3	36	#include <urcu/arch.h>
bd252a04	37	#include <urcu/tls-compat.h>
2953b501	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
87bd15cd BW	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
121a5d44 MD	62	#ifndef DYNAMIC_LINK_TEST
	63	#define _LGPL_SOURCE
	64	#else
1de4df4b	65	#define rcu_debug_yield_read()
121a5d44	66	#endif
ec4e58a3	67	#include <urcu.h>
ac260fd9	68
78efb485	69	static volatile int test_go, test_stop;
8c86b9a1	70
9e31d0f0	71	static unsigned long wdelay;
bb488185	72
bcc74df3	73	static int *test_rcu_pointer;
41718ff9	74
cf380c2f	75	static unsigned long duration;
cf380c2f	76
daddf5b0	77	/* read-side C.S. duration, in loops */
8b632bab MD	78	static unsigned long rduration;
8b632bab MD	79
31b598e0 MD	80	/* write-side C.S. duration, in loops */
	81	static unsigned long wduration;
	82
ab0aacbe	83	static inline void loop_sleep(unsigned long loops)
daddf5b0	84	{
ab0aacbe	85	while (loops-- != 0)
06f22bdb	86	caa_cpu_relax();
daddf5b0 MD	87	}
daddf5b0 MD	88
4bad7d45 MD	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
2a7ac59d MD	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
	103	static void set_affinity(void)
	104	{
95bc7fb9	105	#if HAVE_SCHED_SETAFFINITY
2a7ac59d	106	cpu_set_t mask;
95bc7fb9 MD	107	int cpu, ret;
95bc7fb9 MD	108	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	109
	110	if (!use_affinity)
	111	return;
	112
d8540fc5	113	#if HAVE_SCHED_SETAFFINITY
2a7ac59d MD	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	}
d8540fc5	125
2a7ac59d MD	126	CPU_ZERO(&mask);
2a7ac59d MD	127	CPU_SET(cpu, &mask);
d8540fc5 PA	128	#if SCHED_SETAFFINITY_ARGS == 2
	129	sched_setaffinity(0, &mask);
	130	#else
2a7ac59d	131	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	132	#endif
d8540fc5 PA	133	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	134	}
2a7ac59d MD	135
cf380c2f MD	136	/*
	137	* returns 0 if test should end.
	138	*/
5873cd17	139	static int test_duration_write(void)
cf380c2f	140	{
78efb485	141	return !test_stop;
5873cd17 MD	142	}
	143
	144	static int test_duration_read(void)
	145	{
78efb485	146	return !test_stop;
cf380c2f MD	147	}
cf380c2f MD	148
bd252a04 MD	149	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	150	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
1eec319e	151
8c86b9a1 MD	152	static unsigned int nr_readers;
	153	static unsigned int nr_writers;
	154
c265818b MD	155	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	156
	157	void rcu_copy_mutex_lock(void)
	158	{
	159	int ret;
	160	ret = pthread_mutex_lock(&rcu_copy_mutex);
	161	if (ret) {
	162	perror("Error in pthread mutex lock");
	163	exit(-1);
	164	}
	165	}
	166
	167	void rcu_copy_mutex_unlock(void)
	168	{
	169	int ret;
	170
	171	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	172	if (ret) {
	173	perror("Error in pthread mutex unlock");
	174	exit(-1);
	175	}
	176	}
f69f195a	177
1eec319e	178	void thr_reader(void _count)
f69f195a	179	{
1eec319e	180	unsigned long long *count = _count;
bcc74df3	181	int *local_ptr;
41718ff9	182
4bad7d45	183	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
6ff854ac MD	184	"reader", (unsigned long) pthread_self(),
6ff854ac MD	185	(unsigned long) gettid());
f69f195a	186
2a7ac59d MD	187	set_affinity();
2a7ac59d MD	188
121a5d44	189	rcu_register_thread();
f69f195a	190
8c86b9a1 MD	191	while (!test_go)
	192	{
	193	}
5481ddb3	194	cmm_smp_mb();
8c86b9a1	195
cf380c2f	196	for (;;) {
1430ee0b	197	rcu_read_lock();
cf380c2f	198	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	199	rcu_debug_yield_read();
cf380c2f	200	if (local_ptr)
bcc74df3	201	assert(*local_ptr == 8);
a0b7f7ea	202	if (caa_unlikely(rduration))
daddf5b0	203	loop_sleep(rduration);
1430ee0b	204	rcu_read_unlock();
bd252a04	205	URCU_TLS(nr_reads)++;
a0b7f7ea	206	if (caa_unlikely(!test_duration_read()))
cf380c2f	207	break;
41718ff9	208	}
f69f195a	209
121a5d44	210	rcu_unregister_thread();
41718ff9	211
2b514ae2 MD	212	/* test extra thread registration */
	213	rcu_register_thread();
	214	rcu_unregister_thread();
	215
bd252a04	216	*count = URCU_TLS(nr_reads);
4bad7d45	217	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
6ff854ac MD	218	"reader", (unsigned long) pthread_self(),
6ff854ac MD	219	(unsigned long) gettid());
f69f195a MD	220	return ((void*)1);
	221
	222	}
	223
1eec319e	224	void thr_writer(void _count)
f69f195a	225	{
1eec319e	226	unsigned long long *count = _count;
bcc74df3	227	int new, old;
f69f195a	228
4bad7d45	229	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
6ff854ac MD	230	"writer", (unsigned long) pthread_self(),
6ff854ac MD	231	(unsigned long) gettid());
f69f195a	232
2a7ac59d MD	233	set_affinity();
2a7ac59d MD	234
8c86b9a1 MD	235	while (!test_go)
	236	{
	237	}
5481ddb3	238	cmm_smp_mb();
8c86b9a1	239
cf380c2f	240	for (;;) {
bcc74df3 MD	241	new = malloc(sizeof(int));
	242	assert(new);
	243	*new = 8;
d2835e6f	244	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	245	if (caa_unlikely(wduration))
31b598e0	246	loop_sleep(wduration);
d2835e6f	247	synchronize_rcu();
cf380c2f	248	if (old)
bcc74df3 MD	249	*old = 0;
bcc74df3 MD	250	free(old);
bd252a04	251	URCU_TLS(nr_writes)++;
a0b7f7ea	252	if (caa_unlikely(!test_duration_write()))
cf380c2f	253	break;
a0b7f7ea	254	if (caa_unlikely(wdelay))
9e31d0f0	255	loop_sleep(wdelay);
f69f195a MD	256	}
f69f195a MD	257
4bad7d45	258	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
6ff854ac MD	259	"writer", (unsigned long) pthread_self(),
6ff854ac MD	260	(unsigned long) gettid());
bd252a04	261	*count = URCU_TLS(nr_writes);
f69f195a MD	262	return ((void*)2);
f69f195a MD	263	}
ac260fd9	264
1430ee0b MD	265	void show_usage(int argc, char **argv)
1430ee0b MD	266	{
8c86b9a1	267	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
1430ee0b MD	268	#ifdef DEBUG_YIELD
	269	printf(" [-r] [-w] (yield reader and/or writer)");
	270	#endif
7685d963	271	printf(" [-d delay] (writer period (us))");
daddf5b0	272	printf(" [-c duration] (reader C.S. duration (in loops))");
31b598e0	273	printf(" [-e duration] (writer C.S. duration (in loops))");
4bad7d45	274	printf(" [-v] (verbose output)");
9e97e478	275	printf(" [-a cpu#] [-a cpu#]... (affinity)");
1430ee0b MD	276	printf("\n");
	277	}
	278
cf380c2f	279	int main(int argc, char **argv)
ac260fd9	280	{
f69f195a	281	int err;
8c86b9a1	282	pthread_t tid_reader, tid_writer;
f69f195a	283	void *tret;
8c86b9a1	284	unsigned long long count_reader, count_writer;
1eec319e	285	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	286	int i, a;
f69f195a	287
8c86b9a1 MD	288	if (argc < 4) {
	289	show_usage(argc, argv);
	290	return -1;
	291	}
	292
	293	err = sscanf(argv[1], "%u", &nr_readers);
	294	if (err != 1) {
1430ee0b	295	show_usage(argc, argv);
cf380c2f MD	296	return -1;
	297	}
	298
8c86b9a1 MD	299	err = sscanf(argv[2], "%u", &nr_writers);
	300	if (err != 1) {
	301	show_usage(argc, argv);
	302	return -1;
	303	}
	304
	305	err = sscanf(argv[3], "%lu", &duration);
cf380c2f	306	if (err != 1) {
1430ee0b	307	show_usage(argc, argv);
cf380c2f MD	308	return -1;
	309	}
	310
8c86b9a1	311	for (i = 4; i < argc; i++) {
cf380c2f MD	312	if (argv[i][0] != '-')
	313	continue;
	314	switch (argv[i][1]) {
bb488185	315	#ifdef DEBUG_YIELD
cf380c2f	316	case 'r':
1de4df4b	317	rcu_yield_active \|= RCU_YIELD_READ;
cf380c2f MD	318	break;
cf380c2f MD	319	case 'w':
1de4df4b	320	rcu_yield_active \|= RCU_YIELD_WRITE;
cf380c2f	321	break;
bb488185	322	#endif
9e97e478 MD	323	case 'a':
	324	if (argc < i + 2) {
	325	show_usage(argc, argv);
	326	return -1;
	327	}
	328	a = atoi(argv[++i]);
2a7ac59d	329	cpu_affinities[next_aff++] = a;
9e97e478	330	use_affinity = 1;
4bad7d45	331	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	332	break;
8b632bab MD	333	case 'c':
	334	if (argc < i + 2) {
	335	show_usage(argc, argv);
	336	return -1;
	337	}
9e31d0f0	338	rduration = atol(argv[++i]);
8b632bab	339	break;
8c86b9a1	340	case 'd':
7685d963	341	if (argc < i + 2) {
8c86b9a1 MD	342	show_usage(argc, argv);
	343	return -1;
	344	}
9e31d0f0	345	wdelay = atol(argv[++i]);
bb488185	346	break;
31b598e0 MD	347	case 'e':
	348	if (argc < i + 2) {
	349	show_usage(argc, argv);
	350	return -1;
	351	}
	352	wduration = atol(argv[++i]);
	353	break;
4bad7d45 MD	354	case 'v':
	355	verbose_mode = 1;
	356	break;
cf380c2f MD	357	}
cf380c2f MD	358	}
cf380c2f	359
4bad7d45	360	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
8c86b9a1	361	duration, nr_readers, nr_writers);
9e31d0f0	362	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	363	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	364	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
6ff854ac MD	365	"main", (unsigned long) pthread_self(),
6ff854ac MD	366	(unsigned long)gettid());
87bd15cd	367
8c86b9a1 MD	368	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	369	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	370	count_reader = malloc(sizeof(count_reader) nr_readers);
	371	count_writer = malloc(sizeof(count_writer) nr_writers);
	372
2a7ac59d MD	373	next_aff = 0;
2a7ac59d MD	374
8c86b9a1	375	for (i = 0; i < nr_readers; i++) {
1eec319e MD	376	err = pthread_create(&tid_reader[i], NULL, thr_reader,
1eec319e MD	377	&count_reader[i]);
f69f195a MD	378	if (err != 0)
	379	exit(1);
	380	}
8c86b9a1	381	for (i = 0; i < nr_writers; i++) {
1eec319e MD	382	err = pthread_create(&tid_writer[i], NULL, thr_writer,
1eec319e MD	383	&count_writer[i]);
f69f195a MD	384	if (err != 0)
	385	exit(1);
	386	}
	387
5481ddb3	388	cmm_smp_mb();
8c86b9a1	389
78efb485 MD	390	test_go = 1;
	391
	392	sleep(duration);
	393
	394	test_stop = 1;
	395
8c86b9a1	396	for (i = 0; i < nr_readers; i++) {
f69f195a MD	397	err = pthread_join(tid_reader[i], &tret);
	398	if (err != 0)
	399	exit(1);
1eec319e	400	tot_reads += count_reader[i];
f69f195a	401	}
8c86b9a1	402	for (i = 0; i < nr_writers; i++) {
f69f195a MD	403	err = pthread_join(tid_writer[i], &tret);
	404	if (err != 0)
	405	exit(1);
1eec319e	406	tot_writes += count_writer[i];
f69f195a	407	}
5873cd17	408
4bad7d45	409	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
1eec319e	410	tot_writes);
a50a7b43	411	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	412	"nr_writers %3u "
9e31d0f0	413	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	414	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	415	nr_writers, wdelay, tot_reads, tot_writes,
4bad7d45 MD	416	tot_reads + tot_writes);
bcc74df3	417	free(test_rcu_pointer);
8c86b9a1 MD	418	free(tid_reader);
	419	free(tid_writer);
	420	free(count_reader);
	421	free(count_writer);
f69f195a	422	return 0;
ac260fd9	423	}