[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 <sched.h>
#include <errno.h>

#include <urcu/arch.h>
#include <urcu/tls-compat.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;

#ifndef HAVE_CPU_SET_T
typedef unsigned long cpu_set_t;
# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
# define CPU_SET(cpu, cpuset) do { *(cpuset) |= (1UL << (cpu)); } while(0)
#endif

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", 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", 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", 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", 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", 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>
51299083	34	#include <sched.h>
94b343fd	35	#include <errno.h>
51299083	36
ec4e58a3	37	#include <urcu/arch.h>
bd252a04	38	#include <urcu/tls-compat.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
d8540fc5 PA	109	#ifndef HAVE_CPU_SET_T
	110	typedef unsigned long cpu_set_t;
	111	# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
	112	# define CPU_SET(cpu, cpuset) do { *(cpuset) \|= (1UL << (cpu)); } while(0)
	113	#endif
	114
2a7ac59d MD	115	static void set_affinity(void)
2a7ac59d MD	116	{
95bc7fb9	117	#if HAVE_SCHED_SETAFFINITY
2a7ac59d	118	cpu_set_t mask;
95bc7fb9 MD	119	int cpu, ret;
95bc7fb9 MD	120	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	121
	122	if (!use_affinity)
	123	return;
	124
d8540fc5	125	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	126	ret = pthread_mutex_lock(&affinity_mutex);
	127	if (ret) {
	128	perror("Error in pthread mutex lock");
	129	exit(-1);
	130	}
2a7ac59d	131	cpu = cpu_affinities[next_aff++];
6af882ba MD	132	ret = pthread_mutex_unlock(&affinity_mutex);
	133	if (ret) {
	134	perror("Error in pthread mutex unlock");
	135	exit(-1);
	136	}
2a7ac59d MD	137	CPU_ZERO(&mask);
2a7ac59d MD	138	CPU_SET(cpu, &mask);
d8540fc5 PA	139	#if SCHED_SETAFFINITY_ARGS == 2
	140	sched_setaffinity(0, &mask);
	141	#else
2a7ac59d	142	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	143	#endif
d8540fc5 PA	144	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	145	}
2a7ac59d MD	146
51299083 MD	147	/*
	148	* returns 0 if test should end.
	149	*/
	150	static int test_duration_write(void)
	151	{
	152	return !test_stop;
	153	}
	154
	155	static int test_duration_read(void)
	156	{
	157	return !test_stop;
	158	}
	159
bd252a04 MD	160	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	161	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
51299083	162
55271c13	163	static
06f22bdb	164	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
55271c13	165	static
06f22bdb	166	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
51299083 MD	167
	168	static unsigned int nr_readers;
	169	static unsigned int nr_writers;
	170
	171	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	172
	173	void rcu_copy_mutex_lock(void)
	174	{
	175	int ret;
	176	ret = pthread_mutex_lock(&rcu_copy_mutex);
	177	if (ret) {
	178	perror("Error in pthread mutex lock");
	179	exit(-1);
	180	}
	181	}
	182
	183	void rcu_copy_mutex_unlock(void)
	184	{
	185	int ret;
	186
	187	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	188	if (ret) {
	189	perror("Error in pthread mutex unlock");
	190	exit(-1);
	191	}
	192	}
	193
	194	void thr_reader(void data)
	195	{
	196	unsigned long tidx = (unsigned long)data;
	197
4bad7d45	198	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
51299083 MD	199	"reader", pthread_self(), (unsigned long)gettid());
51299083 MD	200
2a7ac59d MD	201	set_affinity();
2a7ac59d MD	202
51299083 MD	203	while (!test_go)
	204	{
	205	}
	206
	207	for (;;) {
	208	pthread_mutex_lock(&lock);
	209	assert(test_array.a == 8);
a0b7f7ea	210	if (caa_unlikely(rduration))
daddf5b0	211	loop_sleep(rduration);
51299083	212	pthread_mutex_unlock(&lock);
bd252a04	213	URCU_TLS(nr_reads)++;
a0b7f7ea	214	if (caa_unlikely(!test_duration_read()))
51299083 MD	215	break;
	216	}
	217
bd252a04	218	tot_nr_reads[tidx] = URCU_TLS(nr_reads);
cda3c71d	219	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
51299083 MD	220	"reader", pthread_self(), (unsigned long)gettid());
	221	return ((void*)1);
	222
	223	}
	224
	225	void thr_writer(void data)
	226	{
	227	unsigned long wtidx = (unsigned long)data;
	228
4bad7d45	229	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
51299083 MD	230	"writer", pthread_self(), (unsigned long)gettid());
51299083 MD	231
2a7ac59d MD	232	set_affinity();
2a7ac59d MD	233
51299083 MD	234	while (!test_go)
	235	{
	236	}
5481ddb3	237	cmm_smp_mb();
51299083 MD	238
	239	for (;;) {
	240	pthread_mutex_lock(&lock);
	241	test_array.a = 0;
	242	test_array.a = 8;
a0b7f7ea	243	if (caa_unlikely(wduration))
31b598e0	244	loop_sleep(wduration);
51299083	245	pthread_mutex_unlock(&lock);
bd252a04	246	URCU_TLS(nr_writes)++;
a0b7f7ea	247	if (caa_unlikely(!test_duration_write()))
51299083	248	break;
a0b7f7ea	249	if (caa_unlikely(wdelay))
9e31d0f0	250	loop_sleep(wdelay);
51299083 MD	251	}
51299083 MD	252
4bad7d45	253	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
51299083	254	"writer", pthread_self(), (unsigned long)gettid());
bd252a04	255	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
51299083 MD	256	return ((void*)2);
	257	}
	258
	259	void show_usage(int argc, char **argv)
	260	{
	261	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	262	#ifdef DEBUG_YIELD
	263	printf(" [-r] [-w] (yield reader and/or writer)");
	264	#endif
	265	printf(" [-d delay] (writer period (us))");
daddf5b0	266	printf(" [-c duration] (reader C.S. duration (in loops))");
31b598e0	267	printf(" [-e duration] (writer C.S. duration (in loops))");
4bad7d45	268	printf(" [-v] (verbose output)");
51299083 MD	269	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	270	printf("\n");
	271	}
	272
51299083 MD	273	int main(int argc, char **argv)
	274	{
	275	int err;
	276	pthread_t tid_reader, tid_writer;
	277	void *tret;
	278	unsigned long long count_reader, count_writer;
	279	unsigned long long tot_reads = 0, tot_writes = 0;
	280	int i, a;
51299083 MD	281
	282	if (argc < 4) {
	283	show_usage(argc, argv);
	284	return -1;
	285	}
5481ddb3	286	cmm_smp_mb();
51299083 MD	287
	288	err = sscanf(argv[1], "%u", &nr_readers);
	289	if (err != 1) {
	290	show_usage(argc, argv);
	291	return -1;
	292	}
	293
	294	err = sscanf(argv[2], "%u", &nr_writers);
	295	if (err != 1) {
	296	show_usage(argc, argv);
	297	return -1;
	298	}
	299
	300	err = sscanf(argv[3], "%lu", &duration);
	301	if (err != 1) {
	302	show_usage(argc, argv);
	303	return -1;
	304	}
	305
51299083 MD	306	for (i = 4; i < argc; i++) {
	307	if (argv[i][0] != '-')
	308	continue;
	309	switch (argv[i][1]) {
	310	#ifdef DEBUG_YIELD
	311	case 'r':
	312	yield_active \|= YIELD_READ;
	313	break;
	314	case 'w':
	315	yield_active \|= YIELD_WRITE;
	316	break;
	317	#endif
	318	case 'a':
	319	if (argc < i + 2) {
	320	show_usage(argc, argv);
	321	return -1;
	322	}
	323	a = atoi(argv[++i]);
2a7ac59d	324	cpu_affinities[next_aff++] = a;
51299083	325	use_affinity = 1;
4bad7d45	326	printf_verbose("Adding CPU %d affinity\n", a);
51299083	327	break;
8b632bab MD	328	case 'c':
	329	if (argc < i + 2) {
	330	show_usage(argc, argv);
	331	return -1;
	332	}
9e31d0f0	333	rduration = atol(argv[++i]);
8b632bab	334	break;
51299083 MD	335	case 'd':
	336	if (argc < i + 2) {
	337	show_usage(argc, argv);
	338	return -1;
	339	}
9e31d0f0	340	wdelay = atol(argv[++i]);
51299083	341	break;
31b598e0 MD	342	case 'e':
	343	if (argc < i + 2) {
	344	show_usage(argc, argv);
	345	return -1;
	346	}
	347	wduration = atol(argv[++i]);
	348	break;
4bad7d45 MD	349	case 'v':
	350	verbose_mode = 1;
	351	break;
51299083 MD	352	}
	353	}
	354
4bad7d45	355	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
51299083	356	duration, nr_readers, nr_writers);
9e31d0f0	357	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45 MD	358	printf_verbose("Reader duration : %lu loops.\n", rduration);
4bad7d45 MD	359	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
51299083 MD	360	"main", pthread_self(), (unsigned long)gettid());
51299083 MD	361
51299083 MD	362	tid_reader = malloc(sizeof(tid_reader) nr_readers);
	363	tid_writer = malloc(sizeof(tid_writer) nr_writers);
	364	count_reader = malloc(sizeof(count_reader) nr_readers);
	365	count_writer = malloc(sizeof(count_writer) nr_writers);
	366	tot_nr_reads = malloc(sizeof(tot_nr_reads) nr_readers);
	367	tot_nr_writes = malloc(sizeof(tot_nr_writes) nr_writers);
	368
2a7ac59d MD	369	next_aff = 0;
2a7ac59d MD	370
51299083 MD	371	for (i = 0; i < nr_readers; i++) {
	372	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	373	(void *)(long)i);
	374	if (err != 0)
	375	exit(1);
	376	}
	377	for (i = 0; i < nr_writers; i++) {
	378	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	379	(void *)(long)i);
	380	if (err != 0)
	381	exit(1);
	382	}
	383
5481ddb3	384	cmm_smp_mb();
51299083 MD	385
	386	test_go = 1;
	387
	388	sleep(duration);
	389
	390	test_stop = 1;
	391
	392	for (i = 0; i < nr_readers; i++) {
	393	err = pthread_join(tid_reader[i], &tret);
	394	if (err != 0)
	395	exit(1);
	396	tot_reads += tot_nr_reads[i];
	397	}
	398	for (i = 0; i < nr_writers; i++) {
	399	err = pthread_join(tid_writer[i], &tret);
	400	if (err != 0)
	401	exit(1);
	402	tot_writes += tot_nr_writes[i];
	403	}
4bad7d45 MD	404
4bad7d45 MD	405	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
51299083	406	tot_writes);
a50a7b43	407	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	408	"nr_writers %3u "
9e31d0f0	409	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	410	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	411	nr_writers, wdelay, tot_reads, tot_writes,
	412	tot_reads + tot_writes);
	413
51299083 MD	414	free(tid_reader);
	415	free(tid_writer);
	416	free(count_reader);
	417	free(count_writer);
	418	free(tot_nr_reads);
	419	free(tot_nr_writes);
	420	return 0;
	421	}