static unsigned long init_hash_size = DEFAULT_HASH_SIZE;
static unsigned long init_populate;
static int opt_auto_resize;
-static int add_only, add_unique;
+static int add_only, add_unique, add_replace;
static unsigned long init_pool_offset, lookup_pool_offset, write_pool_offset;
static unsigned long init_pool_size = DEFAULT_RAND_POOL,
{
unsigned long long *count = _count;
struct cds_lfht_node *node;
+ struct cds_lfht_iter iter;
printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
"reader", pthread_self(), (unsigned long)gettid());
for (;;) {
rcu_read_lock();
- node = cds_lfht_lookup(test_ht,
+ cds_lfht_lookup(test_ht,
(void *)(((unsigned long) rand_r(&rand_lookup) % lookup_pool_size) + lookup_pool_offset),
- sizeof(void *));
+ sizeof(void *), &iter);
+ node = cds_lfht_iter_get_node(&iter);
if (node == NULL) {
if (validate_lookup) {
printf("[ERROR] Lookup cannot find initial node.\n");
void *thr_writer(void *_count)
{
struct cds_lfht_node *node, *ret_node;
+ struct cds_lfht_iter iter;
struct wr_count *count = _count;
int ret;
cds_lfht_node_init(node,
(void *)(((unsigned long) rand_r(&rand_lookup) % write_pool_size) + write_pool_offset),
sizeof(void *));
- if (add_unique)
+ if (add_unique) {
ret_node = cds_lfht_add_unique(test_ht, node);
- else
- cds_lfht_add(test_ht, node);
+ } else {
+ if (add_replace)
+ ret_node = cds_lfht_replace(test_ht, node);
+ else
+ cds_lfht_add(test_ht, node);
+ }
rcu_read_unlock();
if (add_unique && ret_node != node) {
free(node);
nr_addexist++;
- } else
- nr_add++;
+ } else {
+ if (add_replace && ret_node) {
+ call_rcu(&ret_node->head, free_node_cb);
+ nr_addexist++;
+ } else {
+ nr_add++;
+ }
+ }
} else {
/* May delete */
rcu_read_lock();
- node = cds_lfht_lookup(test_ht,
+ cds_lfht_lookup(test_ht,
(void *)(((unsigned long) rand_r(&rand_lookup) % write_pool_size) + write_pool_offset),
- sizeof(void *));
+ sizeof(void *), &iter);
+ node = cds_lfht_iter_get_node(&iter);
if (node)
- ret = cds_lfht_remove(test_ht, node);
+ ret = cds_lfht_del(test_ht, node);
else
ret = -ENOENT;
rcu_read_unlock();
if (!init_populate)
return 0;
- if (add_unique && init_populate * 10 > init_pool_size) {
+ 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) mode. Try with a "
+"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);
}
cds_lfht_node_init(node,
(void *)(((unsigned long) rand_r(&rand_lookup) % init_pool_size) + init_pool_offset),
sizeof(void *));
- if (add_unique)
+ rcu_read_lock();
+ if (add_unique) {
ret_node = cds_lfht_add_unique(test_ht, node);
- else
- cds_lfht_add(test_ht, node);
+ } else {
+ if (add_replace)
+ ret_node = cds_lfht_replace(test_ht, node);
+ else
+ cds_lfht_add(test_ht, node);
+ }
+ rcu_read_unlock();
if (add_unique && ret_node != node) {
free(node);
nr_addexist++;
- } else
- nr_add++;
+ } else {
+ if (add_replace && ret_node) {
+ call_rcu(&ret_node->head, free_node_cb);
+ nr_addexist++;
+ } else {
+ nr_add++;
+ }
+ }
nr_writes++;
}
return 0;
void show_usage(int argc, char **argv)
{
- printf("Usage : %s nr_readers nr_writers duration (s)", argv[0]);
+ printf("Usage : %s nr_readers nr_writers duration (s)\n", argv[0]);
#ifdef DEBUG_YIELD
- printf(" [-r] [-w] (yield reader and/or writer)");
+ printf(" [-r] [-w] (yield reader and/or writer)\n");
#endif
- printf(" [-d delay] (writer period (us))");
- printf(" [-c duration] (reader C.S. duration (in loops))");
- printf(" [-v] (verbose output)");
- printf(" [-a cpu#] [-a cpu#]... (affinity)");
- printf(" [-h size] (initial hash table size)");
- printf(" [-u] Uniquify add.");
- printf(" [-i] Add only (no removal).");
- printf(" [-k nr_nodes] Number of nodes to insert initially.");
- printf(" [-A] Automatically resize hash table.");
- printf(" [-R offset] Lookup pool offset.");
- printf(" [-S offset] Write pool offset.");
- printf(" [-T offset] Init pool offset.");
- printf(" [-M size] Lookup pool size.");
- printf(" [-N size] Write pool size.");
- printf(" [-O size] Init pool size.");
- printf(" [-V] Validate lookups of init values (use with filled init pool, same lookup range, with different write range).");
- printf("\n");
+ printf(" [-d delay] (writer period (us))\n");
+ printf(" [-c duration] (reader C.S. duration (in loops))\n");
+ printf(" [-v] (verbose output)\n");
+ printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
+ printf(" [-h size] (initial hash table size)\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");
+ printf(" [-k nr_nodes] Number of nodes to insert initially.\n");
+ printf(" [-A] Automatically resize hash table.\n");
+ printf(" [-R offset] Lookup pool offset.\n");
+ printf(" [-S offset] Write pool offset.\n");
+ printf(" [-T offset] Init pool offset.\n");
+ printf(" [-M size] Lookup pool size.\n");
+ printf(" [-N size] Write pool size.\n");
+ printf(" [-O size] Init pool size.\n");
+ printf(" [-V] Validate lookups of init values (use with filled init pool, same lookup range, with different write range).\n");
+ printf("\n\n");
}
int main(int argc, char **argv)
init_hash_size = atol(argv[++i]);
break;
case 'u':
+ if (add_replace) {
+ printf("Please specify at most one of -s or -u.\n");
+ exit(-1);
+ }
add_unique = 1;
break;
+ case 's':
+ if (add_unique) {
+ printf("Please specify at most one of -s or -u.\n");
+ exit(-1);
+ }
+ add_replace = 1;
+ break;
case 'i':
add_only = 1;
break;
printf_verbose("Reader duration : %lu loops.\n", rduration);
printf_verbose("Mode:%s%s.\n",
add_only ? " add only" : " add/remove",
- add_unique ? " uniquify" : "");
+ add_unique ? " uniquify" : ( add_replace ? " replace" : " insert"));
printf_verbose("Initial hash table size: %lu buckets.\n", init_hash_size);
printf_verbose("Init pool size offset %lu size %lu.\n",
init_pool_offset, init_pool_size);
tid_writer = malloc(sizeof(*tid_writer) * nr_writers);
count_reader = malloc(sizeof(*count_reader) * nr_readers);
count_writer = malloc(sizeof(*count_writer) * nr_writers);
+
+ err = create_all_cpu_call_rcu_data(0);
+ assert(!err);
+
+ /*
+ * Hash creation and population needs to be seen as a RCU reader
+ * thread from the point of view of resize.
+ */
+ rcu_register_thread();
test_ht = cds_lfht_new(test_hash, test_compare, 0x42UL,
init_hash_size,
- opt_auto_resize ? CDS_LFHT_AUTO_RESIZE : 0,
- call_rcu, synchronize_rcu, rcu_read_lock,
- rcu_read_unlock, rcu_thread_offline,
- rcu_thread_online);
- ret = populate_hash();
+ opt_auto_resize ? CDS_LFHT_AUTO_RESIZE : 0, NULL);
+ ret = populate_hash();
assert(!ret);
- err = create_all_cpu_call_rcu_data(0);
- assert(!err);
+ rcu_unregister_thread();
next_aff = 0;
if (count || removed)
printf("WARNING: nodes left in the hash table upon destroy: "
"%lu nodes + %lu logically removed.\n", count, removed);
- ret = cds_lfht_destroy(test_ht);
+ ret = cds_lfht_destroy(test_ht, NULL);
if (ret)
printf_verbose("final delete aborted\n");
projects / urcu.git / blobdiff