[urcu.git] / tests / benchmark / test_urcu_assign.c

// SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later

/*
 * Userspace RCU library - test program
 */

#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 <errno.h>

#include <urcu/arch.h>
#include <urcu/assert.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.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);
	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;

static
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);
	}
}

static
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);
	}
}

/*
 * malloc/free are reusing memory areas too quickly, which does not let us
 * test races appropriately. Use a large circular array for allocations.
 * ARRAY_SIZE is larger than nr_writers, and we keep the mutex across
 * both alloc and free, which insures we never run over our tail.
 */
#define ARRAY_SIZE (1048576 * nr_writers)
#define ARRAY_POISON (int) 0xDEADBEEF
static unsigned int array_index;
static struct test_array *test_array;

static struct test_array *test_array_alloc(void)
{
	struct test_array *ret;
	int index;

	index = array_index % ARRAY_SIZE;
	urcu_posix_assert(test_array[index].a == ARRAY_POISON ||
		test_array[index].a == 0);
	ret = &test_array[index];
	array_index++;
	if (array_index == ARRAY_SIZE)
		array_index = 0;
	return ret;
}

static void test_array_free(struct test_array *ptr)
{
	if (!ptr)
		return;
	ptr->a = ARRAY_POISON;
}

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)
			urcu_posix_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 *thr_writer(void *_count)
{
	unsigned long long *count = _count;
	struct test_array *new, *old;

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		rcu_copy_mutex_lock();
		new = test_array_alloc();
		new->a = 8;
		old = test_rcu_pointer;
		rcu_assign_pointer(test_rcu_pointer, new);
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		synchronize_rcu();
		if (old)
			old->a = 0;
		test_array_free(old);
		rcu_copy_mutex_unlock();
		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);
}

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, *count_writer;
	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());

	test_array = calloc(1, sizeof(*test_array) * ARRAY_SIZE);
	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);

	test_array_free(test_rcu_pointer);
	free(test_array);
	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);

	return 0;
}
Commit	Line	Data
ce29b371 MJ	1	// SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	2	//
	3	// SPDX-License-Identifier: GPL-2.0-or-later
	4
074d8438	5	/*
074d8438	6	* Userspace RCU library - test program
074d8438 MD	7	*/
074d8438 MD	8
074d8438 MD	9	#include <stdio.h>
	10	#include <pthread.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <sys/types.h>
	14	#include <sys/wait.h>
	15	#include <unistd.h>
	16	#include <stdio.h>
94b343fd	17	#include <errno.h>
074d8438 MD	18
074d8438 MD	19	#include <urcu/arch.h>
01477510	20	#include <urcu/assert.h>
bd252a04	21	#include <urcu/tls-compat.h>
94df6318	22	#include "thread-id.h"
2650042a	23	#include "../common/debug-yield.h"
65fcc7e9	24
074d8438 MD	25	/* hardcoded number of CPUs */
	26	#define NR_CPUS 16384
	27
074d8438 MD	28	#ifndef DYNAMIC_LINK_TEST
074d8438 MD	29	#define _LGPL_SOURCE
074d8438 MD	30	#endif
	31	#include <urcu.h>
	32
	33	struct test_array {
	34	int a;
	35	};
	36
	37	static volatile int test_go, test_stop;
	38
	39	static unsigned long wdelay;
	40
	41	static struct test_array *test_rcu_pointer;
	42
	43	static unsigned long duration;
	44
	45	/* read-side C.S. duration, in loops */
	46	static unsigned long rduration;
	47
31b598e0 MD	48	/* write-side C.S. duration, in loops */
	49	static unsigned long wduration;
	50
ab0aacbe	51	static inline void loop_sleep(unsigned long loops)
074d8438	52	{
ab0aacbe	53	while (loops-- != 0)
06f22bdb	54	caa_cpu_relax();
074d8438 MD	55	}
	56
	57	static int verbose_mode;
	58
	59	#define printf_verbose(fmt, args...) \
	60	do { \
	61	if (verbose_mode) \
	62	printf(fmt, args); \
	63	} while (0)
	64
	65	static unsigned int cpu_affinities[NR_CPUS];
	66	static unsigned int next_aff = 0;
	67	static int use_affinity = 0;
	68
	69	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	70
	71	static void set_affinity(void)
	72	{
2388c075	73	#ifdef HAVE_SCHED_SETAFFINITY
074d8438	74	cpu_set_t mask;
95bc7fb9 MD	75	int cpu, ret;
95bc7fb9 MD	76	#endif /* HAVE_SCHED_SETAFFINITY */
074d8438 MD	77
	78	if (!use_affinity)
	79	return;
	80
2388c075	81	#ifdef HAVE_SCHED_SETAFFINITY
074d8438 MD	82	ret = pthread_mutex_lock(&affinity_mutex);
	83	if (ret) {
	84	perror("Error in pthread mutex lock");
	85	exit(-1);
	86	}
	87	cpu = cpu_affinities[next_aff++];
	88	ret = pthread_mutex_unlock(&affinity_mutex);
	89	if (ret) {
	90	perror("Error in pthread mutex unlock");
	91	exit(-1);
	92	}
d8540fc5	93
074d8438 MD	94	CPU_ZERO(&mask);
	95	CPU_SET(cpu, &mask);
	96	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5	97	#endif /* HAVE_SCHED_SETAFFINITY */
074d8438 MD	98	}
	99
	100	/*
	101	* returns 0 if test should end.
	102	*/
	103	static int test_duration_write(void)
	104	{
	105	return !test_stop;
	106	}
	107
	108	static int test_duration_read(void)
	109	{
	110	return !test_stop;
	111	}
	112
bd252a04 MD	113	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	114	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
074d8438 MD	115
	116	static unsigned int nr_readers;
	117	static unsigned int nr_writers;
	118
	119	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	120
61c3fb60	121	static
074d8438 MD	122	void rcu_copy_mutex_lock(void)
	123	{
	124	int ret;
	125	ret = pthread_mutex_lock(&rcu_copy_mutex);
	126	if (ret) {
	127	perror("Error in pthread mutex lock");
	128	exit(-1);
	129	}
	130	}
	131
61c3fb60	132	static
074d8438 MD	133	void rcu_copy_mutex_unlock(void)
	134	{
	135	int ret;
	136
	137	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	138	if (ret) {
	139	perror("Error in pthread mutex unlock");
	140	exit(-1);
	141	}
	142	}
	143
	144	/*
	145	* malloc/free are reusing memory areas too quickly, which does not let us
	146	* test races appropriately. Use a large circular array for allocations.
d4267b0b MD	147	* ARRAY_SIZE is larger than nr_writers, and we keep the mutex across
d4267b0b MD	148	* both alloc and free, which insures we never run over our tail.
074d8438 MD	149	*/
074d8438 MD	150	#define ARRAY_SIZE (1048576 * nr_writers)
83e334d0 MJ	151	#define ARRAY_POISON (int) 0xDEADBEEF
83e334d0 MJ	152	static unsigned int array_index;
074d8438 MD	153	static struct test_array *test_array;
	154
	155	static struct test_array *test_array_alloc(void)
	156	{
	157	struct test_array *ret;
	158	int index;
	159
074d8438	160	index = array_index % ARRAY_SIZE;
01477510	161	urcu_posix_assert(test_array[index].a == ARRAY_POISON \|\|
074d8438 MD	162	test_array[index].a == 0);
	163	ret = &test_array[index];
	164	array_index++;
	165	if (array_index == ARRAY_SIZE)
	166	array_index = 0;
074d8438 MD	167	return ret;
	168	}
	169
	170	static void test_array_free(struct test_array *ptr)
	171	{
	172	if (!ptr)
	173	return;
074d8438	174	ptr->a = ARRAY_POISON;
074d8438 MD	175	}
074d8438 MD	176
61c3fb60	177	static
074d8438 MD	178	void thr_reader(void _count)
	179	{
	180	unsigned long long *count = _count;
	181	struct test_array *local_ptr;
	182
94df6318 MD	183	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	184	"reader", urcu_get_thread_id());
074d8438 MD	185
	186	set_affinity();
	187
	188	rcu_register_thread();
	189
	190	while (!test_go)
	191	{
	192	}
5481ddb3	193	cmm_smp_mb();
074d8438 MD	194
	195	for (;;) {
	196	rcu_read_lock();
	197	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	198	rcu_debug_yield_read();
074d8438	199	if (local_ptr)
01477510	200	urcu_posix_assert(local_ptr->a == 8);
a0b7f7ea	201	if (caa_unlikely(rduration))
074d8438 MD	202	loop_sleep(rduration);
074d8438 MD	203	rcu_read_unlock();
bd252a04	204	URCU_TLS(nr_reads)++;
a0b7f7ea	205	if (caa_unlikely(!test_duration_read()))
074d8438 MD	206	break;
	207	}
	208
	209	rcu_unregister_thread();
	210
bd252a04	211	*count = URCU_TLS(nr_reads);
94df6318 MD	212	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	213	"reader", urcu_get_thread_id());
074d8438 MD	214	return ((void*)1);
	215
	216	}
	217
61c3fb60	218	static
074d8438 MD	219	void thr_writer(void _count)
	220	{
	221	unsigned long long *count = _count;
	222	struct test_array new, old;
	223
94df6318 MD	224	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	225	"writer", urcu_get_thread_id());
074d8438 MD	226
	227	set_affinity();
	228
	229	while (!test_go)
	230	{
	231	}
5481ddb3	232	cmm_smp_mb();
074d8438 MD	233
074d8438 MD	234	for (;;) {
d4267b0b	235	rcu_copy_mutex_lock();
074d8438 MD	236	new = test_array_alloc();
074d8438 MD	237	new->a = 8;
074d8438 MD	238	old = test_rcu_pointer;
074d8438 MD	239	rcu_assign_pointer(test_rcu_pointer, new);
a0b7f7ea	240	if (caa_unlikely(wduration))
31b598e0	241	loop_sleep(wduration);
074d8438 MD	242	synchronize_rcu();
	243	if (old)
	244	old->a = 0;
	245	test_array_free(old);
d4267b0b	246	rcu_copy_mutex_unlock();
bd252a04	247	URCU_TLS(nr_writes)++;
a0b7f7ea	248	if (caa_unlikely(!test_duration_write()))
074d8438	249	break;
a0b7f7ea	250	if (caa_unlikely(wdelay))
074d8438 MD	251	loop_sleep(wdelay);
	252	}
	253
94df6318 MD	254	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	255	"writer", urcu_get_thread_id());
bd252a04	256	*count = URCU_TLS(nr_writes);
074d8438 MD	257	return ((void*)2);
	258	}
	259
61c3fb60	260	static
70469b43	261	void show_usage(char **argv)
074d8438	262	{
06637138 MD	263	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	264	argv[0]);
	265	printf("OPTIONS:\n");
06637138	266	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	267	printf(" [-d delay] (writer period (us))\n");
	268	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	269	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	270	printf(" [-v] (verbose output)\n");
	271	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
074d8438 MD	272	printf("\n");
	273	}
	274
	275	int main(int argc, char **argv)
	276	{
	277	int err;
	278	pthread_t tid_reader, tid_writer;
	279	void *tret;
	280	unsigned long long count_reader, count_writer;
	281	unsigned long long tot_reads = 0, tot_writes = 0;
	282	int i, a;
83e334d0	283	unsigned int i_thr;
074d8438 MD	284
074d8438 MD	285	if (argc < 4) {
70469b43	286	show_usage(argv);
074d8438 MD	287	return -1;
	288	}
	289
	290	err = sscanf(argv[1], "%u", &nr_readers);
	291	if (err != 1) {
70469b43	292	show_usage(argv);
074d8438 MD	293	return -1;
	294	}
	295
	296	err = sscanf(argv[2], "%u", &nr_writers);
	297	if (err != 1) {
70469b43	298	show_usage(argv);
074d8438 MD	299	return -1;
074d8438 MD	300	}
83e334d0	301
074d8438 MD	302	err = sscanf(argv[3], "%lu", &duration);
074d8438 MD	303	if (err != 1) {
70469b43	304	show_usage(argv);
074d8438 MD	305	return -1;
	306	}
	307
	308	for (i = 4; i < argc; i++) {
	309	if (argv[i][0] != '-')
	310	continue;
	311	switch (argv[i][1]) {
074d8438	312	case 'r':
2650042a	313	rcu_debug_yield_enable(RCU_YIELD_READ);
074d8438 MD	314	break;
074d8438 MD	315	case 'w':
2650042a	316	rcu_debug_yield_enable(RCU_YIELD_WRITE);
074d8438	317	break;
074d8438 MD	318	case 'a':
074d8438 MD	319	if (argc < i + 2) {
70469b43	320	show_usage(argv);
074d8438 MD	321	return -1;
	322	}
	323	a = atoi(argv[++i]);
	324	cpu_affinities[next_aff++] = a;
	325	use_affinity = 1;
	326	printf_verbose("Adding CPU %d affinity\n", a);
	327	break;
	328	case 'c':
	329	if (argc < i + 2) {
70469b43	330	show_usage(argv);
074d8438 MD	331	return -1;
	332	}
	333	rduration = atol(argv[++i]);
	334	break;
	335	case 'd':
	336	if (argc < i + 2) {
70469b43	337	show_usage(argv);
074d8438 MD	338	return -1;
	339	}
	340	wdelay = atol(argv[++i]);
	341	break;
31b598e0 MD	342	case 'e':
31b598e0 MD	343	if (argc < i + 2) {
70469b43	344	show_usage(argv);
31b598e0 MD	345	return -1;
	346	}
	347	wduration = atol(argv[++i]);
	348	break;
074d8438 MD	349	case 'v':
	350	verbose_mode = 1;
	351	break;
	352	}
	353	}
	354
	355	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	356	duration, nr_readers, nr_writers);
	357	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	358	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	359	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	360	"main", urcu_get_thread_id());
074d8438	361
92e8d9d6	362	test_array = calloc(1, sizeof(test_array) ARRAY_SIZE);
9aa14175 MD	363	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	364	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	365	count_reader = calloc(nr_readers, sizeof(*count_reader));
	366	count_writer = calloc(nr_writers, sizeof(*count_writer));
074d8438 MD	367
	368	next_aff = 0;
	369
83e334d0 MJ	370	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	371	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	372	&count_reader[i_thr]);
074d8438 MD	373	if (err != 0)
	374	exit(1);
	375	}
83e334d0 MJ	376	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	377	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	378	&count_writer[i_thr]);
074d8438 MD	379	if (err != 0)
	380	exit(1);
	381	}
	382
5481ddb3	383	cmm_smp_mb();
074d8438 MD	384
	385	test_go = 1;
	386
	387	sleep(duration);
	388
	389	test_stop = 1;
	390
83e334d0 MJ	391	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	392	err = pthread_join(tid_reader[i_thr], &tret);
074d8438 MD	393	if (err != 0)
074d8438 MD	394	exit(1);
83e334d0	395	tot_reads += count_reader[i_thr];
074d8438	396	}
83e334d0 MJ	397	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	398	err = pthread_join(tid_writer[i_thr], &tret);
074d8438 MD	399	if (err != 0)
074d8438 MD	400	exit(1);
83e334d0	401	tot_writes += count_writer[i_thr];
074d8438	402	}
83e334d0	403
074d8438 MD	404	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
074d8438 MD	405	tot_writes);
a50a7b43	406	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
074d8438 MD	407	"nr_writers %3u "
074d8438 MD	408	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	409	argv[0], duration, nr_readers, rduration, wduration,
074d8438 MD	410	nr_writers, wdelay, tot_reads, tot_writes,
074d8438 MD	411	tot_reads + tot_writes);
83e334d0	412
074d8438 MD	413	test_array_free(test_rcu_pointer);
	414	free(test_array);
	415	free(tid_reader);
	416	free(tid_writer);
	417	free(count_reader);
	418	free(count_writer);
83e334d0	419
074d8438 MD	420	return 0;
074d8438 MD	421	}