diff options
Diffstat (limited to 'libglusterfs/src/rbthash.c')
| -rw-r--r-- | libglusterfs/src/rbthash.c | 658 |
1 files changed, 344 insertions, 314 deletions
diff --git a/libglusterfs/src/rbthash.c b/libglusterfs/src/rbthash.c index 33e80224a87..c90b5a21f44 100644 --- a/libglusterfs/src/rbthash.c +++ b/libglusterfs/src/rbthash.c @@ -1,84 +1,73 @@ /* - Copyright (c) 2008-2009 Gluster, Inc. <http://www.gluster.com> + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> This file is part of GlusterFS. - GlusterFS 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 3 of the License, - or (at your option) any later version. - - GlusterFS 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, see - <http://www.gnu.org/licenses/>. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ - -#include "rbthash.h" +#include "glusterfs/rbthash.h" #include "rb.h" -#include "locking.h" -#include "mem-pool.h" -#include "logging.h" +#include "glusterfs/locking.h" +#include "glusterfs/mem-pool.h" +#include "glusterfs/logging.h" +#include "glusterfs/libglusterfs-messages.h" #include <pthread.h> #include <string.h> - int -rbthash_comparator (void *entry1, void *entry2, void *param) +rbthash_comparator(void *entry1, void *entry2, void *param) { - int ret = 0; - rbthash_entry_t *e1 = NULL; - rbthash_entry_t *e2 = NULL; + int ret = 0; + rbthash_entry_t *e1 = NULL; + rbthash_entry_t *e2 = NULL; - if ((!entry1) || (!entry2) || (!param)) - return -1; + if ((!entry1) || (!entry2) || (!param)) + return -1; - e1 = (rbthash_entry_t *)entry1; - e2 = (rbthash_entry_t *)entry2; + e1 = (rbthash_entry_t *)entry1; + e2 = (rbthash_entry_t *)entry2; - if (e1->keylen != e2->keylen) { - if (e1->keylen < e2->keylen) - ret = -1; - else if (e1->keylen > e2->keylen) - ret = 1; - } else - ret = memcmp (e1->key, e2->key, e1->keylen); + if (e1->keylen != e2->keylen) { + if (e1->keylen < e2->keylen) + ret = -1; + else if (e1->keylen > e2->keylen) + ret = 1; + } else + ret = memcmp(e1->key, e2->key, e1->keylen); - return ret; + return ret; } - int -__rbthash_init_buckets (rbthash_table_t *tbl, int buckets) +__rbthash_init_buckets(rbthash_table_t *tbl, int buckets) { - int i = 0; - int ret = -1; - - if (!tbl) - return -1; - - for (; i < buckets; i++) { - LOCK_INIT (&tbl->buckets[i].bucketlock); - tbl->buckets[i].bucket = rb_create ((rb_comparison_func *)rbthash_comparator, tbl, NULL); - if (!tbl->buckets[i].bucket) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to create rb" - " table bucket"); - ret = -1; - goto err; - } + int i = 0; + int ret = -1; + + if (!tbl) + return -1; + + for (; i < buckets; i++) { + LOCK_INIT(&tbl->buckets[i].bucketlock); + tbl->buckets[i].bucket = rb_create( + (rb_comparison_func *)rbthash_comparator, tbl, NULL); + if (!tbl->buckets[i].bucket) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RB_TABLE_CREATE_FAILED, + NULL); + ret = -1; + goto err; } + } - ret = 0; + ret = 0; err: - return ret; + return ret; } - /* * rbthash_table_init - Initialize a RBT based hash table * @buckets - Number of buckets in the hash table @@ -90,335 +79,376 @@ err: */ rbthash_table_t * -rbthash_table_init (int buckets, rbt_hasher_t hfunc, - rbt_data_destroyer_t dfunc, - unsigned long expected_entries, - struct mem_pool *entrypool) +rbthash_table_init(glusterfs_ctx_t *ctx, int buckets, rbt_hasher_t hfunc, + rbt_data_destroyer_t dfunc, unsigned long expected_entries, + struct mem_pool *entrypool) { - rbthash_table_t *newtab = NULL; - int ret = -1; - - if (!hfunc) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Hash function not given"); - return NULL; - } - - if (!entrypool && !expected_entries) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, - "Both mem-pool and expected entries not provided"); - return NULL; - } - - if (entrypool && expected_entries) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, - "Both mem-pool and expected entries are provided"); - return NULL; - } - - - newtab = CALLOC (1, sizeof (*newtab)); - if (!newtab) - return NULL; - - newtab->buckets = CALLOC (buckets, sizeof (struct rbthash_bucket)); - if (!newtab->buckets) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to allocate memory"); - goto free_newtab; + rbthash_table_t *newtab = NULL; + int ret = -1; + + if (!hfunc) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_HASH_FUNC_ERROR, NULL); + return NULL; + } + + if (!entrypool && !expected_entries) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_ENTRIES_NOT_PROVIDED, NULL); + return NULL; + } + + if (entrypool && expected_entries) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_ENTRIES_PROVIDED, NULL); + return NULL; + } + + newtab = GF_CALLOC(1, sizeof(*newtab), gf_common_mt_rbthash_table_t); + if (!newtab) + return NULL; + + newtab->buckets = GF_CALLOC(buckets, sizeof(struct rbthash_bucket), + gf_common_mt_rbthash_bucket); + if (!newtab->buckets) { + goto free_newtab; + } + + if (expected_entries) { + newtab->entrypool = mem_pool_new_ctx(ctx, rbthash_entry_t, + expected_entries); + if (!newtab->entrypool) { + goto free_buckets; } - - if (expected_entries) { - newtab->entrypool = - mem_pool_new (rbthash_entry_t, expected_entries); - if (!newtab->entrypool) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, - "Failed to allocate mem-pool"); - goto free_buckets; - } - newtab->pool_alloced = _gf_true; - } else { - newtab->entrypool = entrypool; - } - - LOCK_INIT (&newtab->tablelock); - newtab->numbuckets = buckets; - ret = __rbthash_init_buckets (newtab, buckets); - - if (ret == -1) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to init buckets"); - if (newtab->pool_alloced) - mem_pool_destroy (newtab->entrypool); - } else { - gf_log (GF_RBTHASH, GF_LOG_TRACE, "Inited hash table: buckets:" - " %d", buckets); - } - - newtab->hashfunc = hfunc; - newtab->dfunc = dfunc; + newtab->pool_alloced = _gf_true; + } else { + newtab->entrypool = entrypool; + } + + LOCK_INIT(&newtab->tablelock); + INIT_LIST_HEAD(&newtab->list); + newtab->numbuckets = buckets; + ret = __rbthash_init_buckets(newtab, buckets); + + if (ret == -1) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RBTHASH_INIT_BUCKET_FAILED, + NULL); + if (newtab->pool_alloced) + mem_pool_destroy(newtab->entrypool); + } else { + gf_msg_trace(GF_RBTHASH, 0, + "Inited hash table: buckets:" + " %d", + buckets); + } + + newtab->hashfunc = hfunc; + newtab->dfunc = dfunc; free_buckets: - if (ret == -1) - FREE (newtab->buckets); + if (ret == -1) + GF_FREE(newtab->buckets); free_newtab: - if (ret == -1) { - FREE (newtab); - newtab = NULL; - } + if (ret == -1) { + GF_FREE(newtab); + newtab = NULL; + } - return newtab; + return newtab; } rbthash_entry_t * -rbthash_init_entry (rbthash_table_t *tbl, void *data, void *key, int keylen) +rbthash_init_entry(rbthash_table_t *tbl, void *data, void *key, int keylen) { - int ret = -1; - rbthash_entry_t *entry = NULL; - - if ((!tbl) || (!data) || (!key)) - return NULL; - - entry = mem_get (tbl->entrypool); - if (!entry) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to get entry from" - " mem-pool"); - goto ret; - } - - entry->data = data; - entry->key = CALLOC (keylen, sizeof (char)); - if (!entry->key) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Memory allocation failed"); - goto free_entry; - } - - memcpy (entry->key, key, keylen); - entry->keylen = keylen; - entry->keyhash = tbl->hashfunc (entry->key, entry->keylen); - gf_log (GF_RBTHASH, GF_LOG_TRACE, "HASH: %u", entry->keyhash); - - ret = 0; + int ret = -1; + rbthash_entry_t *entry = NULL; + + if ((!tbl) || (!data) || (!key)) + return NULL; + + entry = mem_get(tbl->entrypool); + if (!entry) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RBTHASH_GET_ENTRY_FAILED, + NULL); + goto ret; + } + + entry->data = data; + entry->key = GF_MALLOC(keylen, gf_common_mt_char); + if (!entry->key) { + goto free_entry; + } + + INIT_LIST_HEAD(&entry->list); + memcpy(entry->key, key, keylen); + entry->keylen = keylen; + entry->keyhash = tbl->hashfunc(entry->key, entry->keylen); + gf_msg_trace(GF_RBTHASH, 0, "HASH: %u", entry->keyhash); + + ret = 0; free_entry: - if (ret == -1) { - mem_put (tbl->entrypool, entry); - entry = NULL; - } + if (ret == -1) { + mem_put(entry); + entry = NULL; + } ret: - return entry; + return entry; } - void -rbthash_deinit_entry (rbthash_table_t *tbl, rbthash_entry_t *entry) +rbthash_deinit_entry(rbthash_table_t *tbl, rbthash_entry_t *entry) { + if (!entry) + return; - if (!entry) - return; + GF_FREE(entry->key); - if (entry->key) - FREE (entry->key); + if (tbl) { + if ((entry->data) && (tbl->dfunc)) + tbl->dfunc(entry->data); - if (tbl) { - if ((entry->data) && (tbl->dfunc)) - tbl->dfunc (entry->data); - mem_put (tbl->entrypool, entry); + LOCK(&tbl->tablelock); + { + list_del_init(&entry->list); } + UNLOCK(&tbl->tablelock); - return; -} + mem_put(entry); + } + return; +} -inline struct rbthash_bucket * -rbthash_entry_bucket (rbthash_table_t *tbl, rbthash_entry_t * entry) +static struct rbthash_bucket * +rbthash_entry_bucket(rbthash_table_t *tbl, rbthash_entry_t *entry) { - int nbucket = 0; + int nbucket = 0; - nbucket = (entry->keyhash % tbl->numbuckets); - gf_log (GF_RBTHASH, GF_LOG_TRACE, "BUCKET: %d", nbucket); - return &tbl->buckets[nbucket]; + nbucket = (entry->keyhash % tbl->numbuckets); + gf_msg_trace(GF_RBTHASH, 0, "BUCKET: %d", nbucket); + return &tbl->buckets[nbucket]; } - int -rbthash_insert_entry (rbthash_table_t *tbl, rbthash_entry_t *entry) +rbthash_insert_entry(rbthash_table_t *tbl, rbthash_entry_t *entry) { - struct rbthash_bucket *bucket = NULL; - int ret = -1; - - if ((!tbl) || (!entry)) - return -1; - - bucket = rbthash_entry_bucket (tbl, entry); - if (!bucket) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to get bucket"); - goto err; - } - - ret = 0; - LOCK (&bucket->bucketlock); - { - if (!rb_probe (bucket->bucket, (void *)entry)) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to insert" - " entry"); - ret = -1; - } + struct rbthash_bucket *bucket = NULL; + int ret = -1; + + if ((!tbl) || (!entry)) + return -1; + + bucket = rbthash_entry_bucket(tbl, entry); + if (!bucket) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RBTHASH_GET_BUCKET_FAILED, + NULL); + goto err; + } + + ret = 0; + LOCK(&bucket->bucketlock); + { + if (!rb_probe(bucket->bucket, (void *)entry)) { + UNLOCK(&bucket->bucketlock); + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RBTHASH_INSERT_FAILED, + NULL); + ret = -1; + goto err; } - UNLOCK (&bucket->bucketlock); + } + UNLOCK(&bucket->bucketlock); err: - return ret; + return ret; } - int -rbthash_insert (rbthash_table_t *tbl, void *data, void *key, int keylen) +rbthash_insert(rbthash_table_t *tbl, void *data, void *key, int keylen) { - rbthash_entry_t *entry = NULL; - int ret = -1; - - if ((!tbl) || (!data) || (!key)) - return -1; - - entry = rbthash_init_entry (tbl, data, key, keylen); - if (!entry) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to init entry"); - goto err; - } - - ret = rbthash_insert_entry (tbl, entry); - - if (ret == -1) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to insert entry"); - rbthash_deinit_entry (tbl, entry); - } + rbthash_entry_t *entry = NULL; + int ret = -1; + + if ((!tbl) || (!data) || (!key)) + return -1; + + entry = rbthash_init_entry(tbl, data, key, keylen); + if (!entry) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RBTHASH_INIT_ENTRY_FAILED, + NULL); + goto err; + } + + ret = rbthash_insert_entry(tbl, entry); + + if (ret == -1) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RBTHASH_INSERT_FAILED, + NULL); + rbthash_deinit_entry(tbl, entry); + goto err; + } + + LOCK(&tbl->tablelock); + { + list_add_tail(&entry->list, &tbl->list); + } + UNLOCK(&tbl->tablelock); err: - return ret; + return ret; } -inline struct rbthash_bucket * -rbthash_key_bucket (rbthash_table_t *tbl, void *key, int keylen) +static struct rbthash_bucket * +rbthash_key_bucket(rbthash_table_t *tbl, void *key, int keylen) { - uint32_t keyhash = 0; - int nbucket = 0; + uint32_t keyhash = 0; + int nbucket = 0; - if ((!tbl) || (!key)) - return NULL; + if ((!tbl) || (!key)) + return NULL; - keyhash = tbl->hashfunc (key, keylen); - gf_log (GF_RBTHASH, GF_LOG_TRACE, "HASH: %u", keyhash); - nbucket = (keyhash % tbl->numbuckets); - gf_log (GF_RBTHASH, GF_LOG_TRACE, "BUCKET: %u", nbucket); + keyhash = tbl->hashfunc(key, keylen); + gf_msg_trace(GF_RBTHASH, 0, "HASH: %u", keyhash); + nbucket = (keyhash % tbl->numbuckets); + gf_msg_trace(GF_RBTHASH, 0, "BUCKET: %u", nbucket); - return &tbl->buckets[nbucket]; + return &tbl->buckets[nbucket]; } - void * -rbthash_get (rbthash_table_t *tbl, void *key, int keylen) +rbthash_get(rbthash_table_t *tbl, void *key, int keylen) { - struct rbthash_bucket *bucket = NULL; - rbthash_entry_t *entry = NULL; - rbthash_entry_t searchentry = {0, }; - - if ((!tbl) || (!key)) - return NULL; - - bucket = rbthash_key_bucket (tbl, key, keylen); - if (!bucket) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to get bucket"); - return NULL; - } - - searchentry.key = key; - searchentry.keylen = keylen; - LOCK (&bucket->bucketlock); - { - entry = rb_find (bucket->bucket, &searchentry); - } - UNLOCK (&bucket->bucketlock); - - if (!entry) - return NULL; - - return entry->data; + struct rbthash_bucket *bucket = NULL; + rbthash_entry_t *entry = NULL; + rbthash_entry_t searchentry = { + 0, + }; + + if ((!tbl) || (!key)) + return NULL; + + bucket = rbthash_key_bucket(tbl, key, keylen); + if (!bucket) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RBTHASH_GET_BUCKET_FAILED, + NULL); + return NULL; + } + + searchentry.key = key; + searchentry.keylen = keylen; + LOCK(&bucket->bucketlock); + { + entry = rb_find(bucket->bucket, &searchentry); + } + UNLOCK(&bucket->bucketlock); + + if (!entry) + return NULL; + + return entry->data; } - void * -rbthash_remove (rbthash_table_t *tbl, void *key, int keylen) +rbthash_remove(rbthash_table_t *tbl, void *key, int keylen) { - struct rbthash_bucket *bucket = NULL; - rbthash_entry_t *entry = NULL; - rbthash_entry_t searchentry = {0, }; - void *dataref = NULL; - - if ((!tbl) || (!key)) - return NULL; - - bucket = rbthash_key_bucket (tbl, key, keylen); - if (!bucket) { - gf_log (GF_RBTHASH, GF_LOG_ERROR, "Failed to get bucket"); - return NULL; - } - - searchentry.key = key; - searchentry.keylen = keylen; - - LOCK (&bucket->bucketlock); - { - entry = rb_delete (bucket->bucket, &searchentry); - } - UNLOCK (&bucket->bucketlock); - - if (!entry) - return NULL; + struct rbthash_bucket *bucket = NULL; + rbthash_entry_t *entry = NULL; + rbthash_entry_t searchentry = { + 0, + }; + void *dataref = NULL; + + if ((!tbl) || (!key)) + return NULL; + + bucket = rbthash_key_bucket(tbl, key, keylen); + if (!bucket) { + gf_smsg(GF_RBTHASH, GF_LOG_ERROR, 0, LG_MSG_RBTHASH_GET_BUCKET_FAILED, + NULL); + return NULL; + } + + searchentry.key = key; + searchentry.keylen = keylen; + + LOCK(&bucket->bucketlock); + { + entry = rb_delete(bucket->bucket, &searchentry); + } + UNLOCK(&bucket->bucketlock); + + if (!entry) + return NULL; + + GF_FREE(entry->key); + dataref = entry->data; + + LOCK(&tbl->tablelock); + { + list_del_init(&entry->list); + } + UNLOCK(&tbl->tablelock); + + mem_put(entry); + + return dataref; +} - FREE (entry->key); - dataref = entry->data; - mem_put (tbl->entrypool, entry); +void +rbthash_entry_deiniter(void *entry, void *rbparam) +{ + if (!entry) + return; - return dataref; + rbthash_deinit_entry(rbparam, entry); } - void -rbthash_entry_deiniter (void *entry, void *rbparam) +rbthash_table_destroy_buckets(rbthash_table_t *tbl) { - if (!entry) - return; + int x = 0; + if (!tbl) + return; - rbthash_deinit_entry (rbparam, entry); -} + for (; x < tbl->numbuckets; x++) { + LOCK_DESTROY(&tbl->buckets[x].bucketlock); + rb_destroy(tbl->buckets[x].bucket, rbthash_entry_deiniter); + } + return; +} void -rbthash_table_destroy_buckets (rbthash_table_t *tbl) +rbthash_table_destroy(rbthash_table_t *tbl) { - int x = 0; - if (!tbl) - return; + if (!tbl) + return; - for (;x < tbl->numbuckets; x++) { - LOCK_DESTROY (&tbl->buckets[x].bucketlock); - rb_destroy (tbl->buckets[x].bucket, rbthash_entry_deiniter); - } + rbthash_table_destroy_buckets(tbl); + if (tbl->pool_alloced) + mem_pool_destroy(tbl->entrypool); - return; + GF_FREE(tbl->buckets); + GF_FREE(tbl); } - void -rbthash_table_destroy (rbthash_table_t *tbl) +rbthash_table_traverse(rbthash_table_t *tbl, rbt_traverse_t traverse, + void *mydata) { - if (!tbl) - return; + rbthash_entry_t *entry = NULL; - rbthash_table_destroy_buckets (tbl); - if (tbl->pool_alloced) - mem_pool_destroy (tbl->entrypool); + if ((tbl == NULL) || (traverse == NULL)) { + goto out; + } - FREE (tbl->buckets); - FREE (tbl); -} + LOCK(&tbl->tablelock); + { + list_for_each_entry(entry, &tbl->list, list) + { + traverse(entry->data, mydata); + } + } + UNLOCK(&tbl->tablelock); +out: + return; +} |