[userspace-rcu.git] / tests / test_urcu_defer.c

/*
 * test_urcu_defer.c
 *
 * Userspace RCU library - test program (with automatic reclamation)
 *
 * 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>
#include <urcu-defer.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 l)
{
	while(l-- != 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)
{
	cpu_set_t mask;
	int cpu;
	int ret;

	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 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;
	struct test_array *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);
		debug_yield_read();
		if (local_ptr)
			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, thread id : %lx, tid %lu\n",
			"reader", (unsigned long) pthread_self(),
			(unsigned long) gettid());
	return ((void*)1);

}

static void test_cb2(void *data)
{
}

static void test_cb1(void *data)
{
}

void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;
	struct test_array *new, *old = NULL;
	int ret;

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

	set_affinity();

	ret = rcu_defer_register_thread();
	if (ret) {
		printf("Error in rcu_defer_register_thread\n");
		exit(-1);
	}

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		new = malloc(sizeof(*new));
		new->a = 8;
		old = rcu_xchg_pointer(&test_rcu_pointer, new);
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		defer_rcu(free, old);
		defer_rcu(test_cb1, old);
		defer_rcu(test_cb1, (void *)-2L);
		defer_rcu(test_cb1, (void *)-2L);
		defer_rcu(test_cb1, old);
		defer_rcu(test_cb2, (void *)-2L);
		defer_rcu(test_cb2, (void *)-4L);
		defer_rcu(test_cb2, (void *)-2L);
		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	rcu_defer_unregister_thread();

	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;
	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':
			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 = calloc(nr_readers, sizeof(*tid_reader));
	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	count_reader = calloc(nr_readers, sizeof(*count_reader));
	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));

	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,
				     (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 += count_reader[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(tot_nr_writes);

	return 0;
}
Commit	Line	Data
90075a50	1	/*
786ee85b	2	* test_urcu_defer.c
90075a50 MD	3	*
	4	* Userspace RCU library - test program (with automatic reclamation)
	5	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
90075a50 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"
90075a50 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>
90075a50	35
ec4e58a3	36	#include <urcu/arch.h>
bd252a04	37	#include <urcu/tls-compat.h>
95d8822d	38	#include "cpuset.h"
90075a50	39
65fcc7e9 MD	40	#ifdef __linux__
	41	#include <syscall.h>
	42	#endif
	43
90075a50 MD	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
	65	#define debug_yield_read()
	66	#endif
ec4e58a3 MD	67	#include <urcu.h>
ec4e58a3 MD	68	#include <urcu-defer.h>
90075a50 MD	69
	70	struct test_array {
	71	int a;
	72	};
	73
	74	static volatile int test_go, test_stop;
	75
	76	static unsigned long wdelay;
	77
	78	static struct test_array *test_rcu_pointer;
	79
	80	static unsigned long duration;
	81
	82	/* read-side C.S. duration, in loops */
	83	static unsigned long rduration;
	84
31b598e0 MD	85	/* write-side C.S. duration, in loops */
	86	static unsigned long wduration;
	87
90075a50 MD	88	static inline void loop_sleep(unsigned long l)
	89	{
	90	while(l-- != 0)
06f22bdb	91	caa_cpu_relax();
90075a50 MD	92	}
	93
	94	static int verbose_mode;
	95
	96	#define printf_verbose(fmt, args...) \
	97	do { \
	98	if (verbose_mode) \
	99	printf(fmt, args); \
	100	} while (0)
	101
	102	static unsigned int cpu_affinities[NR_CPUS];
	103	static unsigned int next_aff = 0;
	104	static int use_affinity = 0;
	105
	106	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
	107
	108	static void set_affinity(void)
	109	{
	110	cpu_set_t mask;
	111	int cpu;
	112	int ret;
	113
	114	if (!use_affinity)
	115	return;
	116
d8540fc5	117	#if HAVE_SCHED_SETAFFINITY
90075a50 MD	118	ret = pthread_mutex_lock(&affinity_mutex);
	119	if (ret) {
	120	perror("Error in pthread mutex lock");
	121	exit(-1);
	122	}
	123	cpu = cpu_affinities[next_aff++];
	124	ret = pthread_mutex_unlock(&affinity_mutex);
	125	if (ret) {
	126	perror("Error in pthread mutex unlock");
	127	exit(-1);
	128	}
d8540fc5	129
90075a50 MD	130	CPU_ZERO(&mask);
90075a50 MD	131	CPU_SET(cpu, &mask);
d8540fc5 PA	132	#if SCHED_SETAFFINITY_ARGS == 2
	133	sched_setaffinity(0, &mask);
	134	#else
90075a50	135	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	136	#endif
d8540fc5 PA	137	#endif /* HAVE_SCHED_SETAFFINITY */
90075a50 MD	138	}
	139
	140	/*
	141	* returns 0 if test should end.
	142	*/
	143	static int test_duration_write(void)
	144	{
	145	return !test_stop;
	146	}
	147
	148	static int test_duration_read(void)
	149	{
	150	return !test_stop;
	151	}
	152
bd252a04 MD	153	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	154	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
90075a50 MD	155
90075a50 MD	156	static
06f22bdb	157	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
90075a50 MD	158
	159	static unsigned int nr_readers;
	160	static unsigned int nr_writers;
	161
	162	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	163
	164	void rcu_copy_mutex_lock(void)
	165	{
	166	int ret;
	167	ret = pthread_mutex_lock(&rcu_copy_mutex);
	168	if (ret) {
	169	perror("Error in pthread mutex lock");
	170	exit(-1);
	171	}
	172	}
	173
	174	void rcu_copy_mutex_unlock(void)
	175	{
	176	int ret;
	177
	178	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	179	if (ret) {
	180	perror("Error in pthread mutex unlock");
	181	exit(-1);
	182	}
	183	}
	184
	185	void thr_reader(void _count)
	186	{
	187	unsigned long long *count = _count;
	188	struct test_array *local_ptr;
	189
	190	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	191	"reader", (unsigned long) pthread_self(),
2d72fae2 MD	192	(unsigned long) gettid());
90075a50 MD	193
	194	set_affinity();
	195
	196	rcu_register_thread();
	197
	198	while (!test_go)
	199	{
	200	}
5481ddb3	201	cmm_smp_mb();
90075a50 MD	202
	203	for (;;) {
	204	rcu_read_lock();
	205	local_ptr = rcu_dereference(test_rcu_pointer);
	206	debug_yield_read();
	207	if (local_ptr)
	208	assert(local_ptr->a == 8);
a0b7f7ea	209	if (caa_unlikely(rduration))
90075a50 MD	210	loop_sleep(rduration);
90075a50 MD	211	rcu_read_unlock();
bd252a04	212	URCU_TLS(nr_reads)++;
a0b7f7ea	213	if (caa_unlikely(!test_duration_read()))
90075a50 MD	214	break;
	215	}
	216
	217	rcu_unregister_thread();
	218
bd252a04	219	*count = URCU_TLS(nr_reads);
90075a50	220	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	221	"reader", (unsigned long) pthread_self(),
2d72fae2 MD	222	(unsigned long) gettid());
90075a50 MD	223	return ((void*)1);
	224
	225	}
	226
804b4375 MD	227	static void test_cb2(void *data)
	228	{
	229	}
	230
	231	static void test_cb1(void *data)
	232	{
	233	}
	234
90075a50 MD	235	void thr_writer(void data)
	236	{
	237	unsigned long wtidx = (unsigned long)data;
	238	struct test_array new, old = NULL;
6ade67d5	239	int ret;
90075a50 MD	240
90075a50 MD	241	printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	242	"writer", (unsigned long) pthread_self(),
2d72fae2 MD	243	(unsigned long) gettid());
90075a50 MD	244
	245	set_affinity();
	246
6ade67d5 MD	247	ret = rcu_defer_register_thread();
	248	if (ret) {
	249	printf("Error in rcu_defer_register_thread\n");
	250	exit(-1);
	251	}
90075a50 MD	252
	253	while (!test_go)
	254	{
	255	}
5481ddb3	256	cmm_smp_mb();
90075a50 MD	257
	258	for (;;) {
	259	new = malloc(sizeof(*new));
	260	new->a = 8;
	261	old = rcu_xchg_pointer(&test_rcu_pointer, new);
a0b7f7ea	262	if (caa_unlikely(wduration))
31b598e0	263	loop_sleep(wduration);
b4f313b7 MD	264	defer_rcu(free, old);
	265	defer_rcu(test_cb1, old);
	266	defer_rcu(test_cb1, (void *)-2L);
	267	defer_rcu(test_cb1, (void *)-2L);
	268	defer_rcu(test_cb1, old);
	269	defer_rcu(test_cb2, (void *)-2L);
	270	defer_rcu(test_cb2, (void *)-4L);
	271	defer_rcu(test_cb2, (void *)-2L);
bd252a04	272	URCU_TLS(nr_writes)++;
a0b7f7ea	273	if (caa_unlikely(!test_duration_write()))
90075a50	274	break;
a0b7f7ea	275	if (caa_unlikely(wdelay))
90075a50 MD	276	loop_sleep(wdelay);
	277	}
	278
786ee85b	279	rcu_defer_unregister_thread();
90075a50 MD	280
90075a50 MD	281	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
2d72fae2 MD	282	"writer", (unsigned long) pthread_self(),
2d72fae2 MD	283	(unsigned long) gettid());
bd252a04	284	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
90075a50 MD	285	return ((void*)2);
	286	}
	287
	288	void show_usage(int argc, char **argv)
	289	{
	290	printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
	291	#ifdef DEBUG_YIELD
	292	printf(" [-r] [-w] (yield reader and/or writer)");
	293	#endif
	294	printf(" [-d delay] (writer period (us))");
	295	printf(" [-c duration] (reader C.S. duration (in loops))");
31b598e0	296	printf(" [-e duration] (writer C.S. duration (in loops))");
90075a50 MD	297	printf(" [-v] (verbose output)");
	298	printf(" [-a cpu#] [-a cpu#]... (affinity)");
	299	printf("\n");
	300	}
	301
	302	int main(int argc, char **argv)
	303	{
	304	int err;
	305	pthread_t tid_reader, tid_writer;
	306	void *tret;
	307	unsigned long long *count_reader;
	308	unsigned long long tot_reads = 0, tot_writes = 0;
	309	int i, a;
	310
	311	if (argc < 4) {
	312	show_usage(argc, argv);
	313	return -1;
	314	}
	315
	316	err = sscanf(argv[1], "%u", &nr_readers);
	317	if (err != 1) {
	318	show_usage(argc, argv);
	319	return -1;
	320	}
	321
	322	err = sscanf(argv[2], "%u", &nr_writers);
	323	if (err != 1) {
	324	show_usage(argc, argv);
	325	return -1;
	326	}
	327
	328	err = sscanf(argv[3], "%lu", &duration);
	329	if (err != 1) {
	330	show_usage(argc, argv);
	331	return -1;
	332	}
	333
	334	for (i = 4; i < argc; i++) {
	335	if (argv[i][0] != '-')
	336	continue;
	337	switch (argv[i][1]) {
	338	#ifdef DEBUG_YIELD
	339	case 'r':
	340	yield_active \|= YIELD_READ;
	341	break;
	342	case 'w':
	343	yield_active \|= YIELD_WRITE;
	344	break;
	345	#endif
	346	case 'a':
	347	if (argc < i + 2) {
	348	show_usage(argc, argv);
	349	return -1;
	350	}
	351	a = atoi(argv[++i]);
	352	cpu_affinities[next_aff++] = a;
	353	use_affinity = 1;
	354	printf_verbose("Adding CPU %d affinity\n", a);
	355	break;
	356	case 'c':
	357	if (argc < i + 2) {
	358	show_usage(argc, argv);
	359	return -1;
	360	}
361	rduration = atol(argv[++i]);
362	break;
363	case 'd':
364	if (argc < i + 2) {
365	show_usage(argc, argv);
366	return -1;
367	}
368	wdelay = atol(argv[++i]);
369	break;
31b598e0 MD	370	case 'e':
	371	if (argc < i + 2) {
	372	show_usage(argc, argv);
	373	return -1;
	374	}
	375	wduration = atol(argv[++i]);
	376	break;
90075a50 MD	377	case 'v':
	378	verbose_mode = 1;
	379	break;
	380	}
	381	}
	382
	383	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	384	duration, nr_readers, nr_writers);
	385	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	386	printf_verbose("Reader duration : %lu loops.\n", rduration);
	387	printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
2d72fae2 MD	388	"main", (unsigned long) pthread_self(),
2d72fae2 MD	389	(unsigned long) gettid());
90075a50	390
f90535ef MD	391	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	392	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	393	count_reader = calloc(nr_readers, sizeof(*count_reader));
	394	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
90075a50 MD	395
	396	next_aff = 0;
	397
	398	for (i = 0; i < nr_readers; i++) {
	399	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	400	&count_reader[i]);
	401	if (err != 0)
	402	exit(1);
	403	}
	404	for (i = 0; i < nr_writers; i++) {
	405	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	406	(void *)(long)i);
	407	if (err != 0)
	408	exit(1);
	409	}
	410
5481ddb3	411	cmm_smp_mb();
90075a50 MD	412
	413	test_go = 1;
	414
	415	sleep(duration);
	416
	417	test_stop = 1;
	418
	419	for (i = 0; i < nr_readers; i++) {
	420	err = pthread_join(tid_reader[i], &tret);
	421	if (err != 0)
	422	exit(1);
	423	tot_reads += count_reader[i];
	424	}
	425	for (i = 0; i < nr_writers; i++) {
	426	err = pthread_join(tid_writer[i], &tret);
	427	if (err != 0)
	428	exit(1);
	429	tot_writes += tot_nr_writes[i];
	430	}
	431
	432	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	433	tot_writes);
a50a7b43	434	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
90075a50 MD	435	"nr_writers %3u "
90075a50 MD	436	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	437	argv[0], duration, nr_readers, rduration, wduration,
90075a50 MD	438	nr_writers, wdelay, tot_reads, tot_writes,
	439	tot_reads + tot_writes);
	440	free(tid_reader);
	441	free(tid_writer);
	442	free(count_reader);
	443	free(tot_nr_writes);
	444
	445	return 0;
	446	}