X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Ftest_qsbr.c;fp=tests%2Ftest_qsbr.c;h=0000000000000000000000000000000000000000;hp=1c5a696c03491db909c4c2a23f42df9a0fe4b4b0;hb=f8cbb9da4a7001f598f1c38f85712ab39fe0d938;hpb=8b7bebb109db7682a6308d14fe07789381d23142

diff --git a/tests/test_qsbr.c b/tests/test_qsbr.c
deleted file mode 100644
index 1c5a696..0000000
--- a/tests/test_qsbr.c
+++ /dev/null
@@ -1,465 +0,0 @@
-/*
- * 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>
-
-#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-qsbr.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;
-
-#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)
-{
-	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 unsigned long long __thread nr_writes;
-static unsigned long long __thread 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);
-	}
-}
-
-/*
- * 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 0xDEADBEEF
-static 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;
-	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;
-}
-
-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", 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 (unlikely(rduration))
-			loop_sleep(rduration);
-		rcu_read_unlock();
-		nr_reads++;
-		/* QS each 1024 reads */
-		if (unlikely((nr_reads & ((1 << 10) - 1)) == 0))
-			rcu_quiescent_state();
-		if (unlikely(!test_duration_read()))
-			break;
-	}
-
-	rcu_unregister_thread();
-
-	/* test extra thread registration */
-	rcu_register_thread();
-	rcu_unregister_thread();
-
-	*count = 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 *_count)
-{
-	unsigned long long *count = _count;
-	struct test_array *new, *old;
-
-	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 (;;) {
-		rcu_copy_mutex_lock();
-		new = test_array_alloc();
-		new->a = 8;
-		old = rcu_xchg_pointer(&test_rcu_pointer, new);
-		if (unlikely(wduration))
-			loop_sleep(wduration);
-		synchronize_rcu();
-		/* can be done after unlock */
-		if (old)
-			old->a = 0;
-		test_array_free(old);
-		rcu_copy_mutex_unlock();
-		nr_writes++;
-		if (unlikely(!test_duration_write()))
-			break;
-		if (unlikely(wdelay))
-			loop_sleep(wdelay);
-	}
-
-	printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
-			"writer", pthread_self(), (unsigned long)gettid());
-	*count = 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;
-	}
-
-	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());
-
-	test_array = calloc(1, sizeof(*test_array) * ARRAY_SIZE);
-	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);
-
-	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,
-				     &count_writer[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 += count_writer[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);
-	test_array_free(test_rcu_pointer);
-	free(test_array);
-	free(tid_reader);
-	free(tid_writer);
-	free(count_reader);
-	free(count_writer);
-	return 0;
-}