*
* Userspace RCU library - test program
*
- * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ * Copyright 2009-2012 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
*
* 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
*/
#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 <signal.h>
+#include "test_urcu_hash.h"
-#ifdef __linux__
-#include <syscall.h>
-#endif
-
-#define DEFAULT_HASH_SIZE 32
-#define DEFAULT_MIN_ALLOC_SIZE 1
-#define DEFAULT_RAND_POOL 1000000
-
-/*
- * Note: the hash seed should be a random value for hash tables
- * targeting production environments to provide protection against
- * denial of service attacks. We keep it a static value within this test
- * program to compare identical benchmark runs.
- */
-#define TEST_HASH_SEED 0x42UL
-
-/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
-#define CACHE_LINE_SIZE 4096
-
-/* hardcoded number of CPUs */
-#define NR_CPUS 16384
-
-#ifdef POISON_FREE
-#define poison_free(ptr) \
- do { \
- memset(ptr, 0x42, sizeof(*(ptr))); \
- free(ptr); \
- } while (0)
-#else
-#define poison_free(ptr) free(ptr)
-#endif
-
-
-
-#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>
-#include <urcu/rculfhash.h>
-#include <urcu-call-rcu.h>
-
-struct wr_count {
- unsigned long update_ops;
- unsigned long add;
- unsigned long add_exist;
- unsigned long remove;
-};
+unsigned int __thread rand_lookup;
+unsigned long __thread nr_add;
+unsigned long __thread nr_addexist;
+unsigned long __thread nr_del;
+unsigned long __thread nr_delnoent;
+unsigned long __thread lookup_fail;
+unsigned long __thread lookup_ok;
-static unsigned int __thread rand_lookup;
-static unsigned long __thread nr_add;
-static unsigned long __thread nr_addexist;
-static unsigned long __thread nr_del;
-static unsigned long __thread nr_delnoent;
-static unsigned long __thread lookup_fail;
-static unsigned long __thread lookup_ok;
+struct cds_lfht *test_ht;
-static struct cds_lfht *test_ht;
+volatile int test_go, test_stop;
-struct test_data {
- int a;
- int b;
-};
+unsigned long wdelay;
-struct lfht_test_node {
- struct cds_lfht_node node;
- void *key;
- unsigned int key_len;
- /* cache-cold for iteration */
- struct rcu_head head;
-};
-
-static inline struct lfht_test_node *
-to_test_node(struct cds_lfht_node *node)
-{
- return caa_container_of(node, struct lfht_test_node, node);
-}
-
-static inline
-void lfht_test_node_init(struct lfht_test_node *node, void *key,
- size_t key_len)
-{
- cds_lfht_node_init(&node->node);
- node->key = key;
- node->key_len = key_len;
-}
-
-static inline struct lfht_test_node *
-cds_lfht_iter_get_test_node(struct cds_lfht_iter *iter)
-{
- return to_test_node(cds_lfht_iter_get_node(iter));
-}
-
-static volatile int test_go, test_stop;
-
-static unsigned long wdelay;
-
-static unsigned long duration;
+unsigned long duration;
/* read-side C.S. duration, in loops */
-static unsigned long rduration;
-
-static unsigned long init_hash_size = DEFAULT_HASH_SIZE;
-static unsigned long min_hash_alloc_size = DEFAULT_MIN_ALLOC_SIZE;
-static unsigned long max_hash_buckets_size = (1UL << 20);
-static unsigned long init_populate;
-static int opt_auto_resize;
-static int add_only, add_unique, add_replace;
-static const struct cds_lfht_mm_type *memory_backend;
-
-static unsigned long init_pool_offset, lookup_pool_offset, write_pool_offset;
-static unsigned long init_pool_size = DEFAULT_RAND_POOL,
+unsigned long rduration;
+
+unsigned long init_hash_size = DEFAULT_HASH_SIZE;
+unsigned long min_hash_alloc_size = DEFAULT_MIN_ALLOC_SIZE;
+unsigned long max_hash_buckets_size = (1UL << 20);
+unsigned long init_populate;
+int opt_auto_resize;
+int add_only, add_unique, add_replace;
+const struct cds_lfht_mm_type *memory_backend;
+
+unsigned long init_pool_offset, lookup_pool_offset, write_pool_offset;
+unsigned long init_pool_size = DEFAULT_RAND_POOL,
lookup_pool_size = DEFAULT_RAND_POOL,
write_pool_size = DEFAULT_RAND_POOL;
-static int validate_lookup;
+int validate_lookup;
-static int count_pipe[2];
+int count_pipe[2];
-static inline void loop_sleep(unsigned long l)
-{
- while(l-- != 0)
- caa_cpu_relax();
-}
+int verbose_mode;
-static int verbose_mode;
+unsigned int cpu_affinities[NR_CPUS];
+unsigned int next_aff = 0;
+int use_affinity = 0;
-#define printf_verbose(fmt, args...) \
- do { \
- if (verbose_mode) \
- printf(fmt, ## args); \
- } while (0)
+pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
-static unsigned int cpu_affinities[NR_CPUS];
-static unsigned int next_aff = 0;
-static int use_affinity = 0;
+unsigned long long __thread nr_writes;
+unsigned long long __thread nr_reads;
-pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
+unsigned int nr_readers;
+unsigned int nr_writers;
-#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 pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
-static void set_affinity(void)
+void set_affinity(void)
{
cpu_set_t mask;
int cpu;
#endif /* HAVE_SCHED_SETAFFINITY */
}
-static enum {
- AR_RANDOM = 0,
- AR_ADD = 1,
- AR_REMOVE = -1,
-} addremove; /* 1: add, -1 remove, 0: random */
-
-static
-void sigusr1_handler(int signo)
-{
- switch (addremove) {
- case AR_ADD:
- printf("Add/Remove: random.\n");
- addremove = AR_RANDOM;
- break;
- case AR_RANDOM:
- printf("Add/Remove: remove only.\n");
- addremove = AR_REMOVE;
- break;
- case AR_REMOVE:
- printf("Add/Remove: add only.\n");
- addremove = AR_ADD;
- break;
- }
-}
-
-static
-void sigusr2_handler(int signo)
-{
- char msg[1] = { 0x42 };
- ssize_t ret;
-
- do {
- ret = write(count_pipe[1], msg, 1); /* wakeup thread */
- } while (ret == -1L && errno == EINTR);
-}
-
-/*
- * 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;
}
}
-/*
- * Hash function
- * Source: http://burtleburtle.net/bob/c/lookup3.c
- * Originally Public Domain
- */
-
-#define rot(x, k) (((x) << (k)) | ((x) >> (32 - (k))))
-
-#define mix(a, b, c) \
-do { \
- a -= c; a ^= rot(c, 4); c += b; \
- b -= a; b ^= rot(a, 6); a += c; \
- c -= b; c ^= rot(b, 8); b += a; \
- a -= c; a ^= rot(c, 16); c += b; \
- b -= a; b ^= rot(a, 19); a += c; \
- c -= b; c ^= rot(b, 4); b += a; \
-} while (0)
-
-#define final(a, b, c) \
-{ \
- c ^= b; c -= rot(b, 14); \
- a ^= c; a -= rot(c, 11); \
- b ^= a; b -= rot(a, 25); \
- c ^= b; c -= rot(b, 16); \
- a ^= c; a -= rot(c, 4);\
- b ^= a; b -= rot(a, 14); \
- c ^= b; c -= rot(b, 24); \
-}
-
-static __attribute__((unused))
-uint32_t hash_u32(
- const uint32_t *k, /* the key, an array of uint32_t values */
- size_t length, /* the length of the key, in uint32_ts */
- uint32_t initval) /* the previous hash, or an arbitrary value */
-{
- uint32_t a, b, c;
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + (((uint32_t) length) << 2) + initval;
-
- /*----------------------------------------- handle most of the key */
- while (length > 3) {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a, b, c);
- length -= 3;
- k += 3;
- }
-
- /*----------------------------------- handle the last 3 uint32_t's */
- switch (length) { /* all the case statements fall through */
- case 3: c += k[2];
- case 2: b += k[1];
- case 1: a += k[0];
- final(a, b, c);
- case 0: /* case 0: nothing left to add */
- break;
- }
- /*---------------------------------------------- report the result */
- return c;
-}
-
-static
-void hashword2(
- const uint32_t *k, /* the key, an array of uint32_t values */
- size_t length, /* the length of the key, in uint32_ts */
- uint32_t *pc, /* IN: seed OUT: primary hash value */
- uint32_t *pb) /* IN: more seed OUT: secondary hash value */
-{
- uint32_t a, b, c;
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + ((uint32_t) (length << 2)) + *pc;
- c += *pb;
-
- /*----------------------------------------- handle most of the key */
- while (length > 3) {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a, b, c);
- length -= 3;
- k += 3;
- }
-
- /*----------------------------------- handle the last 3 uint32_t's */
- switch (length) { /* all the case statements fall through */
- case 3: c += k[2];
- case 2: b += k[1];
- case 1: a += k[0];
- final(a, b, c);
- case 0: /* case 0: nothing left to add */
- break;
- }
- /*---------------------------------------------- report the result */
- *pc = c;
- *pb = b;
-}
-
-#if (CAA_BITS_PER_LONG == 32)
-static
-unsigned long test_hash(const void *_key, size_t length, unsigned long seed)
-{
- unsigned int key = (unsigned int) _key;
-
- assert(length == sizeof(unsigned int));
- return hash_u32(&key, 1, seed);
-}
-#else
-static
-unsigned long test_hash(const void *_key, size_t length, unsigned long seed)
-{
- union {
- uint64_t v64;
- uint32_t v32[2];
- } v;
- union {
- uint64_t v64;
- uint32_t v32[2];
- } key;
-
- assert(length == sizeof(unsigned long));
- v.v64 = (uint64_t) seed;
- key.v64 = (uint64_t) _key;
- hashword2(key.v32, 2, &v.v32[0], &v.v32[1]);
- return v.v64;
-}
-#endif
-
-static
unsigned long test_compare(const void *key1, size_t key1_len,
const void *key2, size_t key2_len)
{
return 1;
}
-static
-int test_match(struct cds_lfht_node *node, const void *key)
-{
- struct lfht_test_node *test_node = to_test_node(node);
-
- return !test_compare(test_node->key, test_node->key_len,
- key, sizeof(unsigned long));
-}
-
-static inline
-void cds_lfht_test_lookup(struct cds_lfht *ht, void *key, size_t key_len,
- struct cds_lfht_iter *iter)
-{
- assert(key_len == sizeof(unsigned long));
-
- cds_lfht_lookup(ht, test_hash(key, key_len, TEST_HASH_SEED),
- test_match, key, iter);
-}
-
void *thr_count(void *arg)
{
printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
return NULL;
}
-void *thr_reader(void *_count)
-{
- unsigned long long *count = _count;
- struct lfht_test_node *node;
- struct cds_lfht_iter iter;
-
- 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();
- cds_lfht_test_lookup(test_ht,
- (void *)(((unsigned long) rand_r(&rand_lookup) % lookup_pool_size) + lookup_pool_offset),
- sizeof(void *), &iter);
- node = cds_lfht_iter_get_test_node(&iter);
- if (node == NULL) {
- if (validate_lookup) {
- printf("[ERROR] Lookup cannot find initial node.\n");
- exit(-1);
- }
- lookup_fail++;
- } else {
- lookup_ok++;
- }
- debug_yield_read();
- if (caa_unlikely(rduration))
- loop_sleep(rduration);
- rcu_read_unlock();
- nr_reads++;
- if (caa_unlikely(!test_duration_read()))
- break;
- if (caa_unlikely((nr_reads & ((1 << 10) - 1)) == 0))
- rcu_quiescent_state();
- }
-
- rcu_unregister_thread();
-
- *count = nr_reads;
- printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
- "reader", pthread_self(), (unsigned long)gettid());
- printf_verbose("readid : %lx, lookupfail %lu, lookupok %lu\n",
- pthread_self(), lookup_fail, lookup_ok);
- return ((void*)1);
-
-}
-
-static
void free_node_cb(struct rcu_head *head)
{
struct lfht_test_node *node =
free(node);
}
-void *thr_writer(void *_count)
-{
- struct lfht_test_node *node;
- struct cds_lfht_node *ret_node;
- struct cds_lfht_iter iter;
- struct wr_count *count = _count;
- int ret;
-
- printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
- "writer", pthread_self(), (unsigned long)gettid());
-
- set_affinity();
-
- rcu_register_thread();
-
- while (!test_go)
- {
- }
- cmm_smp_mb();
-
- for (;;) {
- if ((addremove == AR_ADD || add_only)
- || (addremove == AR_RANDOM && rand_r(&rand_lookup) & 1)) {
- node = malloc(sizeof(struct lfht_test_node));
- lfht_test_node_init(node,
- (void *)(((unsigned long) rand_r(&rand_lookup) % write_pool_size) + write_pool_offset),
- sizeof(void *));
- rcu_read_lock();
- if (add_unique) {
- ret_node = cds_lfht_add_unique(test_ht,
- test_hash(node->key, node->key_len, TEST_HASH_SEED),
- test_match, node->key, &node->node);
- } else {
- if (add_replace)
- ret_node = cds_lfht_add_replace(test_ht,
- test_hash(node->key, node->key_len, TEST_HASH_SEED),
- test_match, node->key, &node->node);
- else
- cds_lfht_add(test_ht,
- test_hash(node->key, node->key_len, TEST_HASH_SEED),
- &node->node);
- }
- rcu_read_unlock();
- if (add_unique && ret_node != &node->node) {
- free(node);
- nr_addexist++;
- } else {
- if (add_replace && ret_node) {
- call_rcu(&to_test_node(ret_node)->head,
- free_node_cb);
- nr_addexist++;
- } else {
- nr_add++;
- }
- }
- } else {
- /* May delete */
- rcu_read_lock();
- cds_lfht_test_lookup(test_ht,
- (void *)(((unsigned long) rand_r(&rand_lookup) % write_pool_size) + write_pool_offset),
- sizeof(void *), &iter);
- ret = cds_lfht_del(test_ht, cds_lfht_iter_get_node(&iter));
- rcu_read_unlock();
- if (ret == 0) {
- node = cds_lfht_iter_get_test_node(&iter);
- call_rcu(&node->head, free_node_cb);
- nr_del++;
- } else
- nr_delnoent++;
- }
-#if 0
- //if (nr_writes % 100000 == 0) {
- if (nr_writes % 1000 == 0) {
- rcu_read_lock();
- if (rand_r(&rand_lookup) & 1) {
- ht_resize(test_ht, 1);
- } else {
- ht_resize(test_ht, -1);
- }
- rcu_read_unlock();
- }
-#endif //0
- nr_writes++;
- if (caa_unlikely(!test_duration_write()))
- break;
- if (caa_unlikely(wdelay))
- loop_sleep(wdelay);
- if (caa_unlikely((nr_writes & ((1 << 10) - 1)) == 0))
- rcu_quiescent_state();
- }
-
- rcu_unregister_thread();
-
- printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
- "writer", pthread_self(), (unsigned long)gettid());
- printf_verbose("info id %lx: nr_add %lu, nr_addexist %lu, nr_del %lu, "
- "nr_delnoent %lu\n", pthread_self(), nr_add,
- nr_addexist, nr_del, nr_delnoent);
- count->update_ops = nr_writes;
- count->add = nr_add;
- count->add_exist = nr_addexist;
- count->remove = nr_del;
- return ((void*)2);
-}
-
-static int populate_hash(void)
-{
- struct lfht_test_node *node;
- struct cds_lfht_node *ret_node;
-
- if (!init_populate)
- return 0;
-
- if ((add_unique || add_replace) && init_populate * 10 > init_pool_size) {
- printf("WARNING: required to populate %lu nodes (-k), but random "
-"pool is quite small (%lu values) and we are in add_unique (-u) or add_replace (-s) mode. Try with a "
-"larger random pool (-p option). This may take a while...\n", init_populate, init_pool_size);
- }
-
- while (nr_add < init_populate) {
- node = malloc(sizeof(struct lfht_test_node));
- lfht_test_node_init(node,
- (void *)(((unsigned long) rand_r(&rand_lookup) % init_pool_size) + init_pool_offset),
- sizeof(void *));
- rcu_read_lock();
- if (add_unique) {
- ret_node = cds_lfht_add_unique(test_ht,
- test_hash(node->key, node->key_len, TEST_HASH_SEED),
- test_match, node->key, &node->node);
- } else {
- if (add_replace)
- ret_node = cds_lfht_add_replace(test_ht,
- test_hash(node->key, node->key_len, TEST_HASH_SEED),
- test_match, node->key, &node->node);
- else
- cds_lfht_add(test_ht,
- test_hash(node->key, node->key_len, TEST_HASH_SEED),
- &node->node);
- }
- rcu_read_unlock();
- if (add_unique && ret_node != &node->node) {
- free(node);
- nr_addexist++;
- } else {
- if (add_replace && ret_node) {
- call_rcu(&to_test_node(ret_node)->head, free_node_cb);
- nr_addexist++;
- } else {
- nr_add++;
- }
- }
- nr_writes++;
- }
- return 0;
-}
-
static
void test_delete_all_nodes(struct cds_lfht *ht)
{
printf(" [-h size] (initial number of buckets)\n");
printf(" [-m size] (minimum number of allocated buckets)\n");
printf(" [-n size] (maximum number of buckets)\n");
- printf(" [not -u nor -s] Add entries (supports redundant keys).\n");
+printf(" [not -u nor -s] Add entries (supports redundant keys).\n");
printf(" [-u] Uniquify add (no redundant keys).\n");
printf(" [-s] Replace (swap) entries.\n");
printf(" [-i] Add only (no removal).\n");
perror("sigemptyset");
return -1;
}
- act.sa_handler = sigusr1_handler;
+ act.sa_handler = test_hash_rw_sigusr1_handler;
act.sa_flags = SA_RESTART;
ret = sigaction(SIGUSR1, &act, NULL);
if (ret == -1) {
if (err != 0)
exit(1);
- act.sa_handler = sigusr2_handler;
+ act.sa_handler = test_hash_rw_sigusr2_handler;
act.sa_flags = SA_RESTART;
ret = sigaction(SIGUSR2, &act, NULL);
if (ret == -1) {
* thread from the point of view of resize.
*/
rcu_register_thread();
- ret = populate_hash();
+ ret = test_hash_rw_populate_hash();
assert(!ret);
rcu_thread_offline();
next_aff = 0;
for (i = 0; i < nr_readers; i++) {
- err = pthread_create(&tid_reader[i], NULL, thr_reader,
+ err = pthread_create(&tid_reader[i],
+ NULL, test_hash_rw_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,
+ err = pthread_create(&tid_writer[i],
+ NULL, test_hash_rw_thr_writer,
&count_writer[i]);
if (err != 0)
exit(1);
--- /dev/null
+#ifndef _TEST_URCU_HASH_H
+#define _TEST_URCU_HASH_H
+
+/*
+ * test_urcu_hash.h
+ *
+ * Userspace RCU library - test program
+ *
+ * Copyright 2009-2012 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * 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.
+ */
+
+#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 <signal.h>
+
+#ifdef __linux__
+#include <syscall.h>
+#endif
+
+#define DEFAULT_HASH_SIZE 32
+#define DEFAULT_MIN_ALLOC_SIZE 1
+#define DEFAULT_RAND_POOL 1000000
+
+/*
+ * Note: the hash seed should be a random value for hash tables
+ * targeting production environments to provide protection against
+ * denial of service attacks. We keep it a static value within this test
+ * program to compare identical benchmark runs.
+ */
+#define TEST_HASH_SEED 0x42UL
+
+/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
+#define CACHE_LINE_SIZE 4096
+
+/* hardcoded number of CPUs */
+#define NR_CPUS 16384
+
+#ifdef POISON_FREE
+#define poison_free(ptr) \
+ do { \
+ memset(ptr, 0x42, sizeof(*(ptr))); \
+ free(ptr); \
+ } while (0)
+#else
+#define poison_free(ptr) free(ptr)
+#endif
+
+
+
+#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>
+#include <urcu/rculfhash.h>
+#include <urcu-call-rcu.h>
+
+struct wr_count {
+ unsigned long update_ops;
+ unsigned long add;
+ unsigned long add_exist;
+ unsigned long remove;
+};
+
+extern unsigned int __thread rand_lookup;
+extern unsigned long __thread nr_add;
+extern unsigned long __thread nr_addexist;
+extern unsigned long __thread nr_del;
+extern unsigned long __thread nr_delnoent;
+extern unsigned long __thread lookup_fail;
+extern unsigned long __thread lookup_ok;
+
+extern struct cds_lfht *test_ht;
+
+struct test_data {
+ int a;
+ int b;
+};
+
+struct lfht_test_node {
+ struct cds_lfht_node node;
+ void *key;
+ unsigned int key_len;
+ /* cache-cold for iteration */
+ struct rcu_head head;
+};
+
+static inline struct lfht_test_node *
+to_test_node(struct cds_lfht_node *node)
+{
+ return caa_container_of(node, struct lfht_test_node, node);
+}
+
+static inline
+void lfht_test_node_init(struct lfht_test_node *node, void *key,
+ size_t key_len)
+{
+ cds_lfht_node_init(&node->node);
+ node->key = key;
+ node->key_len = key_len;
+}
+
+static inline struct lfht_test_node *
+cds_lfht_iter_get_test_node(struct cds_lfht_iter *iter)
+{
+ return to_test_node(cds_lfht_iter_get_node(iter));
+}
+
+extern volatile int test_go, test_stop;
+
+extern unsigned long wdelay;
+
+extern unsigned long duration;
+
+/* read-side C.S. duration, in loops */
+extern unsigned long rduration;
+
+extern unsigned long init_hash_size;
+extern unsigned long min_hash_alloc_size;
+extern unsigned long max_hash_buckets_size;
+extern unsigned long init_populate;
+extern int opt_auto_resize;
+extern int add_only, add_unique, add_replace;
+extern const struct cds_lfht_mm_type *memory_backend;
+
+extern unsigned long init_pool_offset, lookup_pool_offset, write_pool_offset;
+extern unsigned long init_pool_size,
+ lookup_pool_size,
+ write_pool_size;
+extern int validate_lookup;
+
+extern int count_pipe[2];
+
+static inline void loop_sleep(unsigned long l)
+{
+ while(l-- != 0)
+ caa_cpu_relax();
+}
+
+extern int verbose_mode;
+
+#define printf_verbose(fmt, args...) \
+ do { \
+ if (verbose_mode) \
+ printf(fmt, ## args); \
+ } while (0)
+
+extern unsigned int cpu_affinities[NR_CPUS];
+extern unsigned int next_aff;
+extern int use_affinity;
+
+extern pthread_mutex_t affinity_mutex;
+
+#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
+
+void set_affinity(void);
+
+/* rw test */
+void test_hash_rw_sigusr1_handler(int signo);
+void test_hash_rw_sigusr2_handler(int signo);
+void *test_hash_rw_thr_reader(void *_count);
+void *test_hash_rw_thr_writer(void *_count);
+
+/*
+ * returns 0 if test should end.
+ */
+static inline int test_duration_write(void)
+{
+ return !test_stop;
+}
+
+static inline int test_duration_read(void)
+{
+ return !test_stop;
+}
+
+extern unsigned long long __thread nr_writes;
+extern unsigned long long __thread nr_reads;
+
+extern unsigned int nr_readers;
+extern unsigned int nr_writers;
+
+void rcu_copy_mutex_lock(void);
+void rcu_copy_mutex_unlock(void);
+
+/*
+ * Hash function
+ * Source: http://burtleburtle.net/bob/c/lookup3.c
+ * Originally Public Domain
+ */
+
+#define rot(x, k) (((x) << (k)) | ((x) >> (32 - (k))))
+
+#define mix(a, b, c) \
+do { \
+ a -= c; a ^= rot(c, 4); c += b; \
+ b -= a; b ^= rot(a, 6); a += c; \
+ c -= b; c ^= rot(b, 8); b += a; \
+ a -= c; a ^= rot(c, 16); c += b; \
+ b -= a; b ^= rot(a, 19); a += c; \
+ c -= b; c ^= rot(b, 4); b += a; \
+} while (0)
+
+#define final(a, b, c) \
+{ \
+ c ^= b; c -= rot(b, 14); \
+ a ^= c; a -= rot(c, 11); \
+ b ^= a; b -= rot(a, 25); \
+ c ^= b; c -= rot(b, 16); \
+ a ^= c; a -= rot(c, 4);\
+ b ^= a; b -= rot(a, 14); \
+ c ^= b; c -= rot(b, 24); \
+}
+
+static inline __attribute__((unused))
+uint32_t hash_u32(
+ const uint32_t *k, /* the key, an array of uint32_t values */
+ size_t length, /* the length of the key, in uint32_ts */
+ uint32_t initval) /* the previous hash, or an arbitrary value */
+{
+ uint32_t a, b, c;
+
+ /* Set up the internal state */
+ a = b = c = 0xdeadbeef + (((uint32_t) length) << 2) + initval;
+
+ /*----------------------------------------- handle most of the key */
+ while (length > 3) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ mix(a, b, c);
+ length -= 3;
+ k += 3;
+ }
+
+ /*----------------------------------- handle the last 3 uint32_t's */
+ switch (length) { /* all the case statements fall through */
+ case 3: c += k[2];
+ case 2: b += k[1];
+ case 1: a += k[0];
+ final(a, b, c);
+ case 0: /* case 0: nothing left to add */
+ break;
+ }
+ /*---------------------------------------------- report the result */
+ return c;
+}
+
+static inline
+void hashword2(
+ const uint32_t *k, /* the key, an array of uint32_t values */
+ size_t length, /* the length of the key, in uint32_ts */
+ uint32_t *pc, /* IN: seed OUT: primary hash value */
+ uint32_t *pb) /* IN: more seed OUT: secondary hash value */
+{
+ uint32_t a, b, c;
+
+ /* Set up the internal state */
+ a = b = c = 0xdeadbeef + ((uint32_t) (length << 2)) + *pc;
+ c += *pb;
+
+ /*----------------------------------------- handle most of the key */
+ while (length > 3) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ mix(a, b, c);
+ length -= 3;
+ k += 3;
+ }
+
+ /*----------------------------------- handle the last 3 uint32_t's */
+ switch (length) { /* all the case statements fall through */
+ case 3: c += k[2];
+ case 2: b += k[1];
+ case 1: a += k[0];
+ final(a, b, c);
+ case 0: /* case 0: nothing left to add */
+ break;
+ }
+ /*---------------------------------------------- report the result */
+ *pc = c;
+ *pb = b;
+}
+
+#if (CAA_BITS_PER_LONG == 32)
+static inline
+unsigned long test_hash(const void *_key, size_t length, unsigned long seed)
+{
+ unsigned int key = (unsigned int) _key;
+
+ assert(length == sizeof(unsigned int));
+ return hash_u32(&key, 1, seed);
+}
+#else
+static inline
+unsigned long test_hash(const void *_key, size_t length, unsigned long seed)
+{
+ union {
+ uint64_t v64;
+ uint32_t v32[2];
+ } v;
+ union {
+ uint64_t v64;
+ uint32_t v32[2];
+ } key;
+
+ assert(length == sizeof(unsigned long));
+ v.v64 = (uint64_t) seed;
+ key.v64 = (uint64_t) _key;
+ hashword2(key.v32, 2, &v.v32[0], &v.v32[1]);
+ return v.v64;
+}
+#endif
+
+unsigned long test_compare(const void *key1, size_t key1_len,
+ const void *key2, size_t key2_len);
+
+static inline
+int test_match(struct cds_lfht_node *node, const void *key)
+{
+ struct lfht_test_node *test_node = to_test_node(node);
+
+ return !test_compare(test_node->key, test_node->key_len,
+ key, sizeof(unsigned long));
+}
+
+static inline
+void cds_lfht_test_lookup(struct cds_lfht *ht, void *key, size_t key_len,
+ struct cds_lfht_iter *iter)
+{
+ assert(key_len == sizeof(unsigned long));
+
+ cds_lfht_lookup(ht, test_hash(key, key_len, TEST_HASH_SEED),
+ test_match, key, iter);
+}
+
+void free_node_cb(struct rcu_head *head);
+
+#endif /* _TEST_URCU_HASH_H */
--- /dev/null
+/*
+ * test_urcu_hash_rw.c
+ *
+ * Userspace RCU library - test program
+ *
+ * Copyright 2009-2012 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * 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 "test_urcu_hash.h"
+
+enum urcu_hash_addremove {
+ AR_RANDOM = 0,
+ AR_ADD = 1,
+ AR_REMOVE = -1,
+}; /* 1: add, -1 remove, 0: random */
+
+static enum urcu_hash_addremove addremove; /* 1: add, -1 remove, 0: random */
+
+void test_hash_rw_sigusr1_handler(int signo)
+{
+ switch (addremove) {
+ case AR_ADD:
+ printf("Add/Remove: random.\n");
+ addremove = AR_RANDOM;
+ break;
+ case AR_RANDOM:
+ printf("Add/Remove: remove only.\n");
+ addremove = AR_REMOVE;
+ break;
+ case AR_REMOVE:
+ printf("Add/Remove: add only.\n");
+ addremove = AR_ADD;
+ break;
+ }
+}
+
+void test_hash_rw_sigusr2_handler(int signo)
+{
+ char msg[1] = { 0x42 };
+ ssize_t ret;
+
+ do {
+ ret = write(count_pipe[1], msg, 1); /* wakeup thread */
+ } while (ret == -1L && errno == EINTR);
+}
+
+void *test_hash_rw_thr_reader(void *_count)
+{
+ unsigned long long *count = _count;
+ struct lfht_test_node *node;
+ struct cds_lfht_iter iter;
+
+ 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();
+ cds_lfht_test_lookup(test_ht,
+ (void *)(((unsigned long) rand_r(&rand_lookup) % lookup_pool_size) + lookup_pool_offset),
+ sizeof(void *), &iter);
+ node = cds_lfht_iter_get_test_node(&iter);
+ if (node == NULL) {
+ if (validate_lookup) {
+ printf("[ERROR] Lookup cannot find initial node.\n");
+ exit(-1);
+ }
+ lookup_fail++;
+ } else {
+ lookup_ok++;
+ }
+ debug_yield_read();
+ if (caa_unlikely(rduration))
+ loop_sleep(rduration);
+ rcu_read_unlock();
+ nr_reads++;
+ if (caa_unlikely(!test_duration_read()))
+ break;
+ if (caa_unlikely((nr_reads & ((1 << 10) - 1)) == 0))
+ rcu_quiescent_state();
+ }
+
+ rcu_unregister_thread();
+
+ *count = nr_reads;
+ printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
+ "reader", pthread_self(), (unsigned long)gettid());
+ printf_verbose("readid : %lx, lookupfail %lu, lookupok %lu\n",
+ pthread_self(), lookup_fail, lookup_ok);
+ return ((void*)1);
+
+}
+
+void *test_hash_rw_thr_writer(void *_count)
+{
+ struct lfht_test_node *node;
+ struct cds_lfht_node *ret_node;
+ struct cds_lfht_iter iter;
+ struct wr_count *count = _count;
+ int ret;
+
+ printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
+ "writer", pthread_self(), (unsigned long)gettid());
+
+ set_affinity();
+
+ rcu_register_thread();
+
+ while (!test_go)
+ {
+ }
+ cmm_smp_mb();
+
+ for (;;) {
+ if ((addremove == AR_ADD || add_only)
+ || (addremove == AR_RANDOM && rand_r(&rand_lookup) & 1)) {
+ node = malloc(sizeof(struct lfht_test_node));
+ lfht_test_node_init(node,
+ (void *)(((unsigned long) rand_r(&rand_lookup) % write_pool_size) + write_pool_offset),
+ sizeof(void *));
+ rcu_read_lock();
+ if (add_unique) {
+ ret_node = cds_lfht_add_unique(test_ht,
+ test_hash(node->key, node->key_len, TEST_HASH_SEED),
+ test_match, node->key, &node->node);
+ } else {
+ if (add_replace)
+ ret_node = cds_lfht_add_replace(test_ht,
+ test_hash(node->key, node->key_len, TEST_HASH_SEED),
+ test_match, node->key, &node->node);
+ else
+ cds_lfht_add(test_ht,
+ test_hash(node->key, node->key_len, TEST_HASH_SEED),
+ &node->node);
+ }
+ rcu_read_unlock();
+ if (add_unique && ret_node != &node->node) {
+ free(node);
+ nr_addexist++;
+ } else {
+ if (add_replace && ret_node) {
+ call_rcu(&to_test_node(ret_node)->head,
+ free_node_cb);
+ nr_addexist++;
+ } else {
+ nr_add++;
+ }
+ }
+ } else {
+ /* May delete */
+ rcu_read_lock();
+ cds_lfht_test_lookup(test_ht,
+ (void *)(((unsigned long) rand_r(&rand_lookup) % write_pool_size) + write_pool_offset),
+ sizeof(void *), &iter);
+ ret = cds_lfht_del(test_ht, cds_lfht_iter_get_node(&iter));
+ rcu_read_unlock();
+ if (ret == 0) {
+ node = cds_lfht_iter_get_test_node(&iter);
+ call_rcu(&node->head, free_node_cb);
+ nr_del++;
+ } else
+ nr_delnoent++;
+ }
+#if 0
+ //if (nr_writes % 100000 == 0) {
+ if (nr_writes % 1000 == 0) {
+ rcu_read_lock();
+ if (rand_r(&rand_lookup) & 1) {
+ ht_resize(test_ht, 1);
+ } else {
+ ht_resize(test_ht, -1);
+ }
+ rcu_read_unlock();
+ }
+#endif //0
+ nr_writes++;
+ if (caa_unlikely(!test_duration_write()))
+ break;
+ if (caa_unlikely(wdelay))
+ loop_sleep(wdelay);
+ if (caa_unlikely((nr_writes & ((1 << 10) - 1)) == 0))
+ rcu_quiescent_state();
+ }
+
+ rcu_unregister_thread();
+
+ printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
+ "writer", pthread_self(), (unsigned long)gettid());
+ printf_verbose("info id %lx: nr_add %lu, nr_addexist %lu, nr_del %lu, "
+ "nr_delnoent %lu\n", pthread_self(), nr_add,
+ nr_addexist, nr_del, nr_delnoent);
+ count->update_ops = nr_writes;
+ count->add = nr_add;
+ count->add_exist = nr_addexist;
+ count->remove = nr_del;
+ return ((void*)2);
+}
+
+int test_hash_rw_populate_hash(void)
+{
+ struct lfht_test_node *node;
+ struct cds_lfht_node *ret_node;
+
+ if (!init_populate)
+ return 0;
+
+ if ((add_unique || add_replace) && init_populate * 10 > init_pool_size) {
+ printf("WARNING: required to populate %lu nodes (-k), but random "
+"pool is quite small (%lu values) and we are in add_unique (-u) or add_replace (-s) mode. Try with a "
+"larger random pool (-p option). This may take a while...\n", init_populate, init_pool_size);
+ }
+
+ while (nr_add < init_populate) {
+ node = malloc(sizeof(struct lfht_test_node));
+ lfht_test_node_init(node,
+ (void *)(((unsigned long) rand_r(&rand_lookup) % init_pool_size) + init_pool_offset),
+ sizeof(void *));
+ rcu_read_lock();
+ if (add_unique) {
+ ret_node = cds_lfht_add_unique(test_ht,
+ test_hash(node->key, node->key_len, TEST_HASH_SEED),
+ test_match, node->key, &node->node);
+ } else {
+ if (add_replace)
+ ret_node = cds_lfht_add_replace(test_ht,
+ test_hash(node->key, node->key_len, TEST_HASH_SEED),
+ test_match, node->key, &node->node);
+ else
+ cds_lfht_add(test_ht,
+ test_hash(node->key, node->key_len, TEST_HASH_SEED),
+ &node->node);
+ }
+ rcu_read_unlock();
+ if (add_unique && ret_node != &node->node) {
+ free(node);
+ nr_addexist++;
+ } else {
+ if (add_replace && ret_node) {
+ call_rcu(&to_test_node(ret_node)->head, free_node_cb);
+ nr_addexist++;
+ } else {
+ nr_add++;
+ }
+ }
+ nr_writes++;
+ }
+ return 0;
+}
projects / userspace-rcu.git / commitdiff
