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

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

/*
 * Userspace RCU library - test program (with batch reclamation)
 */

#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 long reclaim_batch = 1;

struct reclaim_queue {
	void **queue;	/* Beginning of queue */
	void **head;	/* Insert position */
};

static struct reclaim_queue *pending_reclaims;

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 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;

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 rcu_gc_clear_queue(unsigned long wtidx)
{
	void **p;

	/* Wait for Q.S and empty queue */
	synchronize_rcu();

	for (p = pending_reclaims[wtidx].queue;
			p < pending_reclaims[wtidx].head; p++) {
		/* poison */
		if (*p)
			((struct test_array *)*p)->a = 0;
		free(*p);
	}
	pending_reclaims[wtidx].head = pending_reclaims[wtidx].queue;
}

/* Using per-thread queue */
static void rcu_gc_reclaim(unsigned long wtidx, void *old)
{
	/* Queue pointer */
	*pending_reclaims[wtidx].head = old;
	pending_reclaims[wtidx].head++;

	if (caa_likely(pending_reclaims[wtidx].head - pending_reclaims[wtidx].queue
			< reclaim_batch))
		return;

	rcu_gc_clear_queue(wtidx);
}

static
void *thr_writer(void *data)
{
	unsigned long wtidx = (unsigned long)data;
#ifdef TEST_LOCAL_GC
	struct test_array *old = NULL;
#else
	struct test_array *new, *old;
#endif

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

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
#ifndef TEST_LOCAL_GC
		new = malloc(sizeof(*new));
		new->a = 8;
		old = rcu_xchg_pointer(&test_rcu_pointer, new);
#endif
		if (caa_unlikely(wduration))
			loop_sleep(wduration);
		rcu_gc_reclaim(wtidx, old);
		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());
	tot_nr_writes[wtidx] = 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;
	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 'b':
			if (argc < i + 2) {
				show_usage(argv);
				return -1;
			}
			reclaim_batch = atol(argv[++i]);
			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());

	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));
	pending_reclaims = calloc(nr_writers, sizeof(*pending_reclaims));

	if (reclaim_batch * sizeof(*pending_reclaims[0].queue)
			< CAA_CACHE_LINE_SIZE)
		for (i_thr = 0; i_thr < nr_writers; i_thr++)
			pending_reclaims[i_thr].queue = calloc(1, CAA_CACHE_LINE_SIZE);
	else
		for (i_thr = 0; i_thr < nr_writers; i_thr++)
			pending_reclaims[i_thr].queue = calloc(reclaim_batch,
					sizeof(*pending_reclaims[i_thr].queue));
	for (i_thr = 0; i_thr < nr_writers; i_thr++)
		pending_reclaims[i_thr].head = pending_reclaims[i_thr].queue;

	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,
				     (void *)(long)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 += tot_nr_writes[i_thr];
		rcu_gc_clear_queue(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 "
		"batch %ld\n",
		argv[0], duration, nr_readers, rduration, wduration,
		nr_writers, wdelay, tot_reads, tot_writes,
		tot_reads + tot_writes, reclaim_batch);

	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(tot_nr_writes);

	for (i_thr = 0; i_thr < nr_writers; i_thr++)
		free(pending_reclaims[i_thr].queue);
	free(pending_reclaims);

	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
a813abf8	5	/*
ffa11a18	6	* Userspace RCU library - test program (with batch reclamation)
a813abf8 MD	7	*/
a813abf8 MD	8
a813abf8 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>
a813abf8	18
ec4e58a3	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
2a7ac59d MD	25	/* hardcoded number of CPUs */
	26	#define NR_CPUS 16384
	27
a813abf8 MD	28	#ifndef DYNAMIC_LINK_TEST
a813abf8 MD	29	#define _LGPL_SOURCE
a813abf8	30	#endif
ec4e58a3	31	#include <urcu.h>
a813abf8 MD	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
d266df35	43	static long reclaim_batch = 1;
a813abf8 MD	44
	45	struct reclaim_queue {
	46	void *queue; / Beginning of queue */
	47	void *head; / Insert position */
	48	};
	49
	50	static struct reclaim_queue *pending_reclaims;
	51
	52	static unsigned long duration;
	53
	54	/* read-side C.S. duration, in loops */
	55	static unsigned long rduration;
	56
31b598e0 MD	57	/* write-side C.S. duration, in loops */
	58	static unsigned long wduration;
	59
ab0aacbe	60	static inline void loop_sleep(unsigned long loops)
a813abf8	61	{
ab0aacbe	62	while (loops-- != 0)
06f22bdb	63	caa_cpu_relax();
a813abf8 MD	64	}
	65
	66	static int verbose_mode;
	67
	68	#define printf_verbose(fmt, args...) \
	69	do { \
	70	if (verbose_mode) \
	71	printf(fmt, args); \
	72	} while (0)
	73
2a7ac59d MD	74	static unsigned int cpu_affinities[NR_CPUS];
	75	static unsigned int next_aff = 0;
	76	static int use_affinity = 0;
	77
6af882ba MD	78	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	79
2a7ac59d MD	80	static void set_affinity(void)
2a7ac59d MD	81	{
2388c075	82	#ifdef HAVE_SCHED_SETAFFINITY
2a7ac59d	83	cpu_set_t mask;
95bc7fb9 MD	84	int cpu, ret;
95bc7fb9 MD	85	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	86
	87	if (!use_affinity)
	88	return;
	89
2388c075	90	#ifdef HAVE_SCHED_SETAFFINITY
6af882ba MD	91	ret = pthread_mutex_lock(&affinity_mutex);
	92	if (ret) {
	93	perror("Error in pthread mutex lock");
	94	exit(-1);
	95	}
2a7ac59d	96	cpu = cpu_affinities[next_aff++];
6af882ba MD	97	ret = pthread_mutex_unlock(&affinity_mutex);
	98	if (ret) {
	99	perror("Error in pthread mutex unlock");
	100	exit(-1);
	101	}
d8540fc5	102
2a7ac59d MD	103	CPU_ZERO(&mask);
	104	CPU_SET(cpu, &mask);
	105	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5	106	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	107	}
2a7ac59d MD	108
a813abf8 MD	109	/*
	110	* returns 0 if test should end.
	111	*/
	112	static int test_duration_write(void)
	113	{
	114	return !test_stop;
	115	}
	116
	117	static int test_duration_read(void)
	118	{
	119	return !test_stop;
	120	}
	121
bd252a04 MD	122	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	123	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
a813abf8 MD	124
a813abf8 MD	125	static
06f22bdb	126	unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
a813abf8 MD	127
	128	static unsigned int nr_readers;
	129	static unsigned int nr_writers;
	130
	131	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	132
61c3fb60	133	static
a813abf8 MD	134	void thr_reader(void _count)
	135	{
	136	unsigned long long *count = _count;
	137	struct test_array *local_ptr;
	138
94df6318 MD	139	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	140	"reader", urcu_get_thread_id());
a813abf8	141
2a7ac59d MD	142	set_affinity();
2a7ac59d MD	143
a813abf8 MD	144	rcu_register_thread();
	145
	146	while (!test_go)
	147	{
	148	}
5481ddb3	149	cmm_smp_mb();
a813abf8 MD	150
	151	for (;;) {
	152	rcu_read_lock();
	153	local_ptr = rcu_dereference(test_rcu_pointer);
1de4df4b	154	rcu_debug_yield_read();
a813abf8	155	if (local_ptr)
01477510	156	urcu_posix_assert(local_ptr->a == 8);
a0b7f7ea	157	if (caa_unlikely(rduration))
a813abf8 MD	158	loop_sleep(rduration);
a813abf8 MD	159	rcu_read_unlock();
bd252a04	160	URCU_TLS(nr_reads)++;
a0b7f7ea	161	if (caa_unlikely(!test_duration_read()))
a813abf8 MD	162	break;
	163	}
	164
	165	rcu_unregister_thread();
	166
bd252a04	167	*count = URCU_TLS(nr_reads);
94df6318 MD	168	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	169	"reader", urcu_get_thread_id());
a813abf8 MD	170	return ((void*)1);
	171
	172	}
	173
53091fe5	174	static void rcu_gc_clear_queue(unsigned long wtidx)
a813abf8 MD	175	{
	176	void **p;
	177
53091fe5	178	/* Wait for Q.S and empty queue */
a813abf8 MD	179	synchronize_rcu();
	180
	181	for (p = pending_reclaims[wtidx].queue;
	182	p < pending_reclaims[wtidx].head; p++) {
	183	/* poison */
	184	if (*p)
	185	((struct test_array )p)->a = 0;
	186	free(*p);
	187	}
	188	pending_reclaims[wtidx].head = pending_reclaims[wtidx].queue;
	189	}
	190
53091fe5 MD	191	/* Using per-thread queue */
53091fe5 MD	192	static void rcu_gc_reclaim(unsigned long wtidx, void *old)
a813abf8	193	{
53091fe5 MD	194	/* Queue pointer */
	195	*pending_reclaims[wtidx].head = old;
	196	pending_reclaims[wtidx].head++;
a813abf8	197
a0b7f7ea	198	if (caa_likely(pending_reclaims[wtidx].head - pending_reclaims[wtidx].queue
53091fe5 MD	199	< reclaim_batch))
53091fe5 MD	200	return;
a813abf8	201
53091fe5	202	rcu_gc_clear_queue(wtidx);
a813abf8 MD	203	}
a813abf8 MD	204
61c3fb60	205	static
a813abf8 MD	206	void thr_writer(void data)
	207	{
	208	unsigned long wtidx = (unsigned long)data;
321e29d9 MD	209	#ifdef TEST_LOCAL_GC
	210	struct test_array *old = NULL;
	211	#else
a813abf8	212	struct test_array new, old;
321e29d9	213	#endif
a813abf8	214
94df6318 MD	215	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	216	"writer", urcu_get_thread_id());
a813abf8	217
2a7ac59d MD	218	set_affinity();
2a7ac59d MD	219
a813abf8 MD	220	while (!test_go)
	221	{
	222	}
5481ddb3	223	cmm_smp_mb();
a813abf8 MD	224
a813abf8 MD	225	for (;;) {
321e29d9	226	#ifndef TEST_LOCAL_GC
a813abf8	227	new = malloc(sizeof(*new));
a813abf8 MD	228	new->a = 8;
a813abf8 MD	229	old = rcu_xchg_pointer(&test_rcu_pointer, new);
321e29d9	230	#endif
a0b7f7ea	231	if (caa_unlikely(wduration))
31b598e0	232	loop_sleep(wduration);
a813abf8	233	rcu_gc_reclaim(wtidx, old);
bd252a04	234	URCU_TLS(nr_writes)++;
a0b7f7ea	235	if (caa_unlikely(!test_duration_write()))
a813abf8	236	break;
a0b7f7ea	237	if (caa_unlikely(wdelay))
a813abf8 MD	238	loop_sleep(wdelay);
	239	}
	240
94df6318 MD	241	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	242	"writer", urcu_get_thread_id());
bd252a04	243	tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
a813abf8 MD	244	return ((void*)2);
	245	}
	246
61c3fb60	247	static
70469b43	248	void show_usage(char **argv)
a813abf8	249	{
06637138 MD	250	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	251	argv[0]);
	252	printf("OPTIONS:\n");
06637138	253	printf(" [-r] [-w] (yield reader and/or writer)\n");
06637138 MD	254	printf(" [-d delay] (writer period (us))\n");
	255	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	256	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	257	printf(" [-v] (verbose output)\n");
	258	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
a813abf8 MD	259	printf("\n");
	260	}
	261
a813abf8 MD	262	int main(int argc, char **argv)
	263	{
	264	int err;
	265	pthread_t tid_reader, tid_writer;
	266	void *tret;
	267	unsigned long long *count_reader;
	268	unsigned long long tot_reads = 0, tot_writes = 0;
	269	int i, a;
83e334d0	270	unsigned int i_thr;
a813abf8 MD	271
a813abf8 MD	272	if (argc < 4) {
70469b43	273	show_usage(argv);
a813abf8 MD	274	return -1;
	275	}
	276
	277	err = sscanf(argv[1], "%u", &nr_readers);
	278	if (err != 1) {
70469b43	279	show_usage(argv);
a813abf8 MD	280	return -1;
	281	}
	282
	283	err = sscanf(argv[2], "%u", &nr_writers);
	284	if (err != 1) {
70469b43	285	show_usage(argv);
a813abf8 MD	286	return -1;
a813abf8 MD	287	}
83e334d0	288
a813abf8 MD	289	err = sscanf(argv[3], "%lu", &duration);
a813abf8 MD	290	if (err != 1) {
70469b43	291	show_usage(argv);
a813abf8 MD	292	return -1;
	293	}
	294
a813abf8 MD	295	for (i = 4; i < argc; i++) {
	296	if (argv[i][0] != '-')
	297	continue;
	298	switch (argv[i][1]) {
a813abf8	299	case 'r':
2650042a	300	rcu_debug_yield_enable(RCU_YIELD_READ);
a813abf8 MD	301	break;
a813abf8 MD	302	case 'w':
2650042a	303	rcu_debug_yield_enable(RCU_YIELD_WRITE);
a813abf8	304	break;
a813abf8 MD	305	case 'a':
a813abf8 MD	306	if (argc < i + 2) {
70469b43	307	show_usage(argv);
a813abf8 MD	308	return -1;
	309	}
	310	a = atoi(argv[++i]);
2a7ac59d	311	cpu_affinities[next_aff++] = a;
a813abf8 MD	312	use_affinity = 1;
	313	printf_verbose("Adding CPU %d affinity\n", a);
	314	break;
	315	case 'b':
	316	if (argc < i + 2) {
70469b43	317	show_usage(argv);
a813abf8 MD	318	return -1;
	319	}
	320	reclaim_batch = atol(argv[++i]);
	321	break;
	322	case 'c':
	323	if (argc < i + 2) {
70469b43	324	show_usage(argv);
a813abf8 MD	325	return -1;
	326	}
	327	rduration = atol(argv[++i]);
	328	break;
	329	case 'd':
	330	if (argc < i + 2) {
70469b43	331	show_usage(argv);
a813abf8 MD	332	return -1;
	333	}
	334	wdelay = atol(argv[++i]);
	335	break;
31b598e0 MD	336	case 'e':
31b598e0 MD	337	if (argc < i + 2) {
70469b43	338	show_usage(argv);
31b598e0 MD	339	return -1;
	340	}
	341	wduration = atol(argv[++i]);
	342	break;
a813abf8 MD	343	case 'v':
	344	verbose_mode = 1;
	345	break;
	346	}
	347	}
	348
	349	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
	350	duration, nr_readers, nr_writers);
	351	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	352	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	353	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	354	"main", urcu_get_thread_id());
a813abf8	355
9aa14175 MD	356	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	357	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	358	count_reader = calloc(nr_readers, sizeof(*count_reader));
	359	tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
	360	pending_reclaims = calloc(nr_writers, sizeof(*pending_reclaims));
83e334d0 MJ	361
83e334d0 MJ	362	if (reclaim_batch * sizeof(*pending_reclaims[0].queue)
06f22bdb	363	< CAA_CACHE_LINE_SIZE)
83e334d0 MJ	364	for (i_thr = 0; i_thr < nr_writers; i_thr++)
83e334d0 MJ	365	pending_reclaims[i_thr].queue = calloc(1, CAA_CACHE_LINE_SIZE);
a813abf8	366	else
83e334d0 MJ	367	for (i_thr = 0; i_thr < nr_writers; i_thr++)
	368	pending_reclaims[i_thr].queue = calloc(reclaim_batch,
	369	sizeof(*pending_reclaims[i_thr].queue));
	370	for (i_thr = 0; i_thr < nr_writers; i_thr++)
	371	pending_reclaims[i_thr].head = pending_reclaims[i_thr].queue;
a813abf8	372
2a7ac59d MD	373	next_aff = 0;
2a7ac59d MD	374
83e334d0 MJ	375	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
	376	err = pthread_create(&tid_reader[i_thr], NULL, thr_reader,
	377	&count_reader[i_thr]);
a813abf8 MD	378	if (err != 0)
	379	exit(1);
	380	}
83e334d0 MJ	381	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
	382	err = pthread_create(&tid_writer[i_thr], NULL, thr_writer,
	383	(void *)(long)i_thr);
a813abf8 MD	384	if (err != 0)
	385	exit(1);
	386	}
	387
5481ddb3	388	cmm_smp_mb();
a813abf8 MD	389
	390	test_go = 1;
	391
	392	sleep(duration);
	393
	394	test_stop = 1;
	395
83e334d0 MJ	396	for (i_thr = 0; i_thr < nr_readers; i_thr++) {
83e334d0 MJ	397	err = pthread_join(tid_reader[i_thr], &tret);
a813abf8 MD	398	if (err != 0)
a813abf8 MD	399	exit(1);
83e334d0	400	tot_reads += count_reader[i_thr];
a813abf8	401	}
83e334d0 MJ	402	for (i_thr = 0; i_thr < nr_writers; i_thr++) {
83e334d0 MJ	403	err = pthread_join(tid_writer[i_thr], &tret);
a813abf8 MD	404	if (err != 0)
a813abf8 MD	405	exit(1);
83e334d0 MJ	406	tot_writes += tot_nr_writes[i_thr];
83e334d0 MJ	407	rcu_gc_clear_queue(i_thr);
a813abf8	408	}
83e334d0	409
a813abf8 MD	410	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
a813abf8 MD	411	tot_writes);
a50a7b43	412	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
a813abf8	413	"nr_writers %3u "
4a3e0004	414	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu "
d266df35	415	"batch %ld\n",
a50a7b43	416	argv[0], duration, nr_readers, rduration, wduration,
a813abf8	417	nr_writers, wdelay, tot_reads, tot_writes,
4a3e0004	418	tot_reads + tot_writes, reclaim_batch);
83e334d0	419
a813abf8 MD	420	free(tid_reader);
	421	free(tid_writer);
	422	free(count_reader);
	423	free(tot_nr_writes);
83e334d0 MJ	424
	425	for (i_thr = 0; i_thr < nr_writers; i_thr++)
	426	free(pending_reclaims[i_thr].queue);
a813abf8 MD	427	free(pending_reclaims);
	428
	429	return 0;
	430	}