[urcu.git] / tests / test_mutex.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 debug_yield_read()
#endif
#include <urcu.h>

struct test_array {
	int a;
};

static pthread_mutex_t lock;

static volatile int test_go, test_stop;

static unsigned long wdelay;

static volatile struct test_array test_array = { 8 };

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 long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
static
unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_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 *data)
{
	unsigned long tidx = (unsigned long)data;

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

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		pthread_mutex_lock(&lock);
		assert(test_array.a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);
		pthread_mutex_unlock(&lock);
		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	tot_nr_reads[tidx] = 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 *data)
{
	unsigned long wtidx = (unsigned long)data;

	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 (;;) {
		pthread_mutex_lock(&lock);
		test_array.a = 0;
		test_array.a = 8;
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		pthread_mutex_unlock(&lock);
		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());
	tot_nr_writes[wtidx] = 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;
	}
	cmm_smp_mb();

	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':
			yield_active |= YIELD_READ;
			break;
		case 'w':
			yield_active |= 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);
	tot_nr_reads = malloc(sizeof(*tot_nr_reads) * nr_readers);
	tot_nr_writes = malloc(sizeof(*tot_nr_writes) * nr_writers);

	next_aff = 0;

	for (i = 0; i < nr_readers; i++) {
		err = pthread_create(&tid_reader[i], NULL, thr_reader,
				     (void *)(long)i);
		if (err != 0)
			exit(1);
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_create(&tid_writer[i], NULL, thr_writer,
				     (void *)(long)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 += tot_nr_reads[i];
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_join(tid_writer[i], &tret);
		if (err != 0)
			exit(1);
		tot_writes += tot_nr_writes[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(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	free(tot_nr_reads);
	free(tot_nr_writes);
	return 0;
}
Commit	Line	Data
51299083 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>
51299083 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
	23	#define _GNU_SOURCE
d8540fc5	24	#include "../config.h"
51299083 MD	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>
94b343fd	34	#include <errno.h>
51299083	35
ec4e58a3	36	#include <urcu/arch.h>
bd252a04	37	#include <urcu/tls-compat.h>
2953b501	38	#include "cpuset.h"
51299083	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
51299083 MD	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
	65	#define debug_yield_read()
	66	#endif
ec4e58a3	67	#include <urcu.h>
51299083 MD	68
	69	struct test_array {
	70	int a;
	71	};
	72
	73	static pthread_mutex_t lock;
	74
	75	static volatile int test_go, test_stop;
	76
9e31d0f0	77	static unsigned long wdelay;
51299083 MD	78
	79	static volatile struct test_array test_array = { 8 };
	80
	81	static unsigned long duration;
	82
daddf5b0	83	/* read-side C.S. duration, in loops */
8b632bab MD	84	static unsigned long rduration;
8b632bab MD	85
31b598e0 MD	86	/* write-side C.S. duration, in loops */
	87	static unsigned long wduration;
	88
ab0aacbe	89	static inline void loop_sleep(unsigned long loops)
daddf5b0	90	{
ab0aacbe	91	while (loops-- != 0)
06f22bdb	92	caa_cpu_relax();
daddf5b0 MD	93	}
daddf5b0 MD	94
4bad7d45 MD	95	static int verbose_mode;
	96
	97	#define printf_verbose(fmt, args...) \
	98	do { \
	99	if (verbose_mode) \
	100	printf(fmt, args); \
	101	} while (0)
	102
2a7ac59d MD	103	static unsigned int cpu_affinities[NR_CPUS];
	104	static unsigned int next_aff = 0;
	105	static int use_affinity = 0;
	106
6af882ba MD	107	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	108
2a7ac59d MD	109	static void set_affinity(void)
2a7ac59d MD	110	{
95bc7fb9	111	#if HAVE_SCHED_SETAFFINITY
2a7ac59d	112	cpu_set_t mask;
95bc7fb9 MD	113	int cpu, ret;
95bc7fb9 MD	114	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	115
	116	if (!use_affinity)
	117	return;
	118
d8540fc5	119	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	120	ret = pthread_mutex_lock(&affinity_mutex);
	121	if (ret) {
	122	perror("Error in pthread mutex lock");
	123	exit(-1);
	124	}
2a7ac59d	125	cpu = cpu_affinities[next_aff++];
6af882ba MD	126	ret = pthread_mutex_unlock(&affinity_mutex);
	127	if (ret) {
	128	perror("Error in pthread mutex unlock");
	129	exit(-1);
	130	}
2a7ac59d MD	131	CPU_ZERO(&mask);
2a7ac59d MD	132	CPU_SET(cpu, &mask);
d8540fc5 PA	133	#if SCHED_SETAFFINITY_ARGS == 2
	134	sched_setaffinity(0, &mask);
	135	#else
2a7ac59d	136	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	137	#endif
d8540fc5 PA	138	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	139	}
2a7ac59d MD	140
51299083 MD	141	/*
	142	* returns 0 if test should end.
	143	*/
	144	static int test_duration_write(void)
	145	{
	146	return !test_stop;
	147	}
	148
	149	static int test_duration_read(void)
	150	{
	151	return !test_stop;
	152	}
	153
bd252a04 MD	154	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	155	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
51299083	156
55271c13	157	static
06f22bdb	158	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13	159	static
06f22bdb	160	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
51299083 MD	161
	162	static unsigned int nr_readers;
	163	static unsigned int nr_writers;
	164
	165	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	166
	167	void rcu_copy_mutex_lock(void)
	168	{
	169	int ret;
	170	ret = pthread_mutex_lock(&rcu_copy_mutex);
	171	if (ret) {
	172	perror("Error in pthread mutex lock");
	173	exit(-1);
	174	}
	175	}
	176
	177	void rcu_copy_mutex_unlock(void)
	178	{
	179	int ret;
	180
	181	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	182	if (ret) {
	183	perror("Error in pthread mutex unlock");
	184	exit(-1);
	185	}
	186	}
	187
	188	void thr_reader(void data)
	189	{
	190	unsigned long tidx = (unsigned long)data;
	191
4bad7d45	192	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
6ff854ac MD	193	"reader", (unsigned long) pthread_self(),
6ff854ac MD	194	(unsigned long) gettid());
51299083	195
2a7ac59d MD	196	set_affinity();
2a7ac59d MD	197
51299083 MD	198	while (!test_go)
	199	{
	200	}
	201
	202	for (;;) {
	203	pthread_mutex_lock(&lock);
	204	assert(test_array.a == 8);
a0b7f7ea	205	if (caa_unlikely(rduration))
daddf5b0	206	loop_sleep(rduration);
51299083	207	pthread_mutex_unlock(&lock);
bd252a04	208	URCU_TLS(nr_reads)++;
a0b7f7ea	209	if (caa_unlikely(!test_duration_read()))
51299083 MD	210	break;
	211	}
	212
bd252a04	213	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
cda3c71d	214	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
6ff854ac MD	215	"reader", (unsigned long) pthread_self(),
6ff854ac MD	216	(unsigned long) gettid());
51299083 MD	217	return ((void*)1);
	218
	219	}
	220
	221	void thr_writer(void data)
	222	{
	223	unsigned long wtidx = (unsigned long)data;
	224
4bad7d45	225	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
6ff854ac MD	226	"writer", (unsigned long) pthread_self(),
6ff854ac MD	227	(unsigned long) gettid());
51299083	228
2a7ac59d MD	229	set_affinity();
2a7ac59d MD	230
51299083 MD	231	while (!test_go)
	232	{
	233	}
5481ddb3	234	cmm_smp_mb();
51299083 MD	235
	236	for (;;) {
	237	pthread_mutex_lock(&lock);
	238	test_array.a = 0;
	239	test_array.a = 8;
a0b7f7ea	240	if (caa_unlikely(wduration))
31b598e0	241	loop_sleep(wduration);
51299083	242	pthread_mutex_unlock(&lock);
bd252a04	243	URCU_TLS(nr_writes)++;
a0b7f7ea	244	if (caa_unlikely(!test_duration_write()))
51299083	245	break;
a0b7f7ea	246	if (caa_unlikely(wdelay))
9e31d0f0	247	loop_sleep(wdelay);
51299083 MD	248	}
51299083 MD	249
4bad7d45	250	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
6ff854ac MD	251	"writer", (unsigned long) pthread_self(),
6ff854ac MD	252	(unsigned long) gettid());
bd252a04	253	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
51299083 MD	254	return ((void*)2);
	255	}
	256
	257	void show_usage(int argc, char **argv)
	258	{
	259	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	260	#ifdef DEBUG_YIELD
	261	printf(" [-r] [-w] (yield reader and/or writer)");
	262	#endif
	263	printf(" [-d delay] (writer period (us))");
daddf5b0	264	printf(" [-c duration] (reader C.S. duration (in loops))");
31b598e0	265	printf(" [-e duration] (writer C.S. duration (in loops))");
4bad7d45	266	printf(" [-v] (verbose output)");
51299083 MD	267	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	268	printf("\n");
	269	}
	270
51299083 MD	271	int main(int argc, char **argv)
	272	{
	273	int err;
	274	pthread_t tid_reader, tid_writer;
	275	void *tret;
	276	unsigned long long count_reader, count_writer;
	277	unsigned long long tot_reads = 0, tot_writes = 0;
	278	int i, a;
51299083 MD	279
	280	if (argc < 4) {
	281	show_usage(argc, argv);
	282	return -1;
	283	}
5481ddb3	284	cmm_smp_mb();
51299083 MD	285
	286	err = sscanf(argv[1], "%u", &nr_readers);
	287	if (err != 1) {
	288	show_usage(argc, argv);
	289	return -1;
	290	}
	291
	292	err = sscanf(argv[2], "%u", &nr_writers);
	293	if (err != 1) {
	294	show_usage(argc, argv);
	295	return -1;
	296	}
	297
	298	err = sscanf(argv[3], "%lu", &duration);
	299	if (err != 1) {
	300	show_usage(argc, argv);
	301	return -1;
	302	}
	303
51299083 MD	304	for (i = 4; i < argc; i++) {
	305	if (argv[i][0] != '-')
	306	continue;
	307	switch (argv[i][1]) {
	308	#ifdef DEBUG_YIELD
	309	case 'r':
	310	yield_active \|= YIELD_READ;
	311	break;
	312	case 'w':
	313	yield_active \|= YIELD_WRITE;
	314	break;
	315	#endif
	316	case 'a':
	317	if (argc < i + 2) {
	318	show_usage(argc, argv);
	319	return -1;
	320	}
	321	a = atoi(argv[++i]);
2a7ac59d	322	cpu_affinities[next_aff++] = a;
51299083	323	use_affinity = 1;
4bad7d45	324	printf_verbose("Adding CPU %d affinity\n", a);
51299083	325	break;
8b632bab MD	326	case 'c':
	327	if (argc < i + 2) {
	328	show_usage(argc, argv);
	329	return -1;
	330	}
9e31d0f0	331	rduration = atol(argv[++i]);
8b632bab	332	break;
51299083 MD	333	case 'd':
	334	if (argc < i + 2) {
	335	show_usage(argc, argv);
	336	return -1;
	337	}
9e31d0f0	338	wdelay = atol(argv[++i]);
51299083	339	break;
31b598e0 MD	340	case 'e':
	341	if (argc < i + 2) {
	342	show_usage(argc, argv);
	343	return -1;
	344	}
	345	wduration = atol(argv[++i]);
	346	break;
4bad7d45 MD	347	case 'v':
	348	verbose_mode = 1;
	349	break;
51299083 MD	350	}
	351	}
	352
4bad7d45	353	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
51299083	354	duration, nr_readers, nr_writers);
9e31d0f0	355	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	356	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	357	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
6ff854ac MD	358	"main", (unsigned long) pthread_self(),
6ff854ac MD	359	(unsigned long) gettid());
51299083	360
51299083 MD	361	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	362	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	363	count_reader = malloc(sizeof(count_reader) nr_readers);
	364	count_writer = malloc(sizeof(count_writer) nr_writers);
	365	tot_nr_reads = malloc(sizeof(tot_nr_reads) nr_readers);
	366	tot_nr_writes = malloc(sizeof(tot_nr_writes) nr_writers);
	367
2a7ac59d MD	368	next_aff = 0;
2a7ac59d MD	369
51299083 MD	370	for (i = 0; i < nr_readers; i++) {
	371	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	372	(void *)(long)i);
	373	if (err != 0)
	374	exit(1);
	375	}
	376	for (i = 0; i < nr_writers; i++) {
	377	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	378	(void *)(long)i);
	379	if (err != 0)
	380	exit(1);
	381	}
	382
5481ddb3	383	cmm_smp_mb();
51299083 MD	384
	385	test_go = 1;
	386
	387	sleep(duration);
	388
	389	test_stop = 1;
	390
	391	for (i = 0; i < nr_readers; i++) {
	392	err = pthread_join(tid_reader[i], &tret);
	393	if (err != 0)
	394	exit(1);
	395	tot_reads += tot_nr_reads[i];
	396	}
	397	for (i = 0; i < nr_writers; i++) {
	398	err = pthread_join(tid_writer[i], &tret);
	399	if (err != 0)
	400	exit(1);
	401	tot_writes += tot_nr_writes[i];
	402	}
4bad7d45 MD	403
4bad7d45 MD	404	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
51299083	405	tot_writes);
a50a7b43	406	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	407	"nr_writers %3u "
9e31d0f0	408	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	409	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	410	nr_writers, wdelay, tot_reads, tot_writes,
	411	tot_reads + tot_writes);
	412
51299083 MD	413	free(tid_reader);
	414	free(tid_writer);
	415	free(count_reader);
	416	free(count_writer);
	417	free(tot_nr_reads);
	418	free(tot_nr_writes);
	419	return 0;
	420	}