core: remove unused code

BUG: 764890
Change-Id: Ia8bcaa7a4daeb706bcb0bba24b2e634e9ca20d49
Signed-off-by: Amar Tumballi <amarts@redhat.com>
Reviewed-on: http://review.gluster.com/3657
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

1 files changed, 0 insertions, 341 deletions

diff --git a/xlators/storage/bdb/src/bctx.c b/xlators/storage/bdb/src/bctx.c
deleted file mode 100644
index 61560edfaea..00000000000
--- a/xlators/storage/bdb/src/bctx.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/*
-  Copyright (c) 2008-2011 Gluster, Inc. <http://www.gluster.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/>.
-*/
-
-#include <list.h>
-#include <bdb.h>
-#include <libgen.h> /* for dirname */
-
-static void
-__destroy_bctx (bctx_t *bctx)
-{
-        if (bctx->directory)
-                GF_FREE (bctx->directory);
-
-        if (bctx->db_path)
-                GF_FREE (bctx->db_path);
-
-        GF_FREE (bctx);
-}
-
-static void
-__unhash_bctx (bctx_t *bctx)
-{
-        list_del_init (&bctx->b_hash);
-}
-
-static int32_t
-bctx_table_prune (bctx_table_t *table)
-{
-        int32_t ret = 0;
-        struct list_head purge = {0,};
-        struct list_head *next = NULL;
-        bctx_t *entry = NULL;
-        bctx_t *del = NULL, *tmp = NULL;
-
-        if (!table)
-                return 0;
-
-        INIT_LIST_HEAD (&purge);
-
-        LOCK (&table->lock);
-        {
-                if ((table->lru_limit) &&
-                    (table->lru_size > table->lru_limit)) {
-                        while (table->lru_size > table->lru_limit) {
-                                next = table->b_lru.next;
-                                entry = list_entry (next, bctx_t, list);
-
-                                list_move_tail (next, &table->purge);
-                                __unhash_bctx (entry);
-
-                                table->lru_size--;
-                                ret++;
-                        }
-                }
-                list_move_tail (&purge, &table->purge);
-                list_del_init (&table->purge);
-        }
-        UNLOCK (&table->lock);
-
-        list_for_each_entry_safe (del, tmp, &purge, list) {
-                list_del_init (&del->list);
-                if (del->primary) {
-                        ret = del->primary->close (del->primary, 0);
-                        if (ret != 0) {
-                                gf_log (table->this->name, GF_LOG_DEBUG,
-                                        "_BCTX_TABLE_PRUNE %s: %s "
-                                        "(failed to close primary database)",
-                                        del->directory, db_strerror (ret));
-                        } else {
-                                gf_log (table->this->name, GF_LOG_DEBUG,
-                                        "_BCTX_TABLE_PRUNE %s (lru=%d)"
-                                        "(closed primary database)",
-                                        del->directory, table->lru_size);
-                        }
-                }
-                if (del->secondary) {
-                        ret = del->secondary->close (del->secondary, 0);
-                        if (ret != 0) {
-                                gf_log (table->this->name, GF_LOG_DEBUG,
-                                        "_BCTX_TABLE_PRUNE %s: %s "
-                                        "(failed to close secondary database)",
-                                        del->directory, db_strerror (ret));
-                        } else {
-                                gf_log (table->this->name, GF_LOG_DEBUG,
-                                        "_BCTX_TABLE_PRUNE %s (lru=%d)"
-                                        "(closed secondary database)",
-                                        del->directory, table->lru_size);
-                        }
-                }
-                __destroy_bctx (del);
-        }
-
-        return ret;
-}
-
-
-/* struct bdb_ctx related */
-static inline uint32_t
-bdb_key_hash (char *key, uint32_t hash_size)
-{
-        uint32_t hash = 0;
-
-        hash = *key;
-
-        if (hash) {
-                for (key += 1; *key != '\0'; key++) {
-                        hash = (hash << 5) - hash + *key;
-                }
-        }
-
-        return (hash + *key) % hash_size;
-}
-
-static void
-__hash_bctx (bctx_t *bctx)
-{
-        bctx_table_t *table = NULL;
-        char *key = NULL;
-
-        table = bctx->table;
-
-        MAKE_KEY_FROM_PATH (key, bctx->directory);
-        bctx->key_hash = bdb_key_hash (key, table->hash_size);
-
-        list_del_init (&bctx->b_hash);
-        list_add (&bctx->b_hash, &table->b_hash[bctx->key_hash]);
-}
-
-static inline bctx_t *
-__bctx_passivate (bctx_t *bctx)
-{
-        if (bctx->primary) {
-                list_move_tail (&bctx->list, &(bctx->table->b_lru));
-                bctx->table->lru_size++;
-        } else {
-                list_move_tail (&bctx->list, &bctx->table->purge);
-                __unhash_bctx (bctx);
-        }
-        return bctx;
-}
-
-static inline bctx_t *
-__bctx_activate (bctx_t *bctx)
-{
-        list_move (&bctx->list, &bctx->table->active);
-        bctx->table->lru_size--;
-
-        return bctx;
-}
-
-static bctx_t *
-__bdb_ctx_unref (bctx_t *bctx)
-{
-        GF_ASSERT (bctx->ref);
-
-        --bctx->ref;
-
-        if (!bctx->ref)
-                bctx = __bctx_passivate (bctx);
-
-        return bctx;
-}
-
-
-bctx_t *
-bctx_unref (bctx_t *bctx)
-{
-        bctx_table_t *table = NULL;
-
-        if (!bctx && !bctx->table)
-                return NULL;
-
-        table = bctx->table;
-
-        LOCK (&table->lock);
-        {
-                bctx = __bdb_ctx_unref (bctx);
-        }
-        UNLOCK (&table->lock);
-
-        bctx_table_prune (table);
-
-        return bctx;
-}
-
-/*
- * NOTE: __bdb_ctx_ref() is called only after holding table->lock and
- * bctx->lock, in that order
- */
-static inline bctx_t *
-__bctx_ref (bctx_t *bctx)
-{
-        if (!bctx->ref)
-                __bctx_activate (bctx);
-
-        bctx->ref++;
-
-        return bctx;
-}
-
-bctx_t *
-bctx_ref (bctx_t *bctx)
-{
-        LOCK (&(bctx->table->lock));
-        {
-                __bctx_ref (bctx);
-        }
-        UNLOCK (&(bctx->table->lock));
-
-        return bctx;
-}
-
-
-#define BDB_THIS(table) (table->this)
-
-static inline bctx_t *
-__create_bctx (bctx_table_t *table,
-               const char *path)
-{
-        bctx_t *bctx = NULL;
-        char *db_path = NULL;
-
-        bctx = GF_CALLOC (1, sizeof (*bctx), gf_bdb_mt_bctx_t);
-        GF_VALIDATE_OR_GOTO ("bctx", bctx, out);
-
-        bctx->table = table;
-        bctx->directory = gf_strdup (path);
-        GF_VALIDATE_OR_GOTO ("bctx", bctx->directory, out);
-
-        MAKE_REAL_PATH_TO_STORAGE_DB (db_path, BDB_THIS (table), path);
-
-        bctx->db_path = gf_strdup (db_path);
-        GF_VALIDATE_OR_GOTO ("bctx", bctx->directory, out);
-
-        INIT_LIST_HEAD (&bctx->c_list);
-        INIT_LIST_HEAD (&bctx->list);
-        INIT_LIST_HEAD (&bctx->b_hash);
-
-        LOCK_INIT (&bctx->lock);
-
-        __hash_bctx (bctx);
-
-        list_add (&bctx->list, &table->b_lru);
-        table->lru_size++;
-
-out:
-        return bctx;
-}
-
-/* bctx_lookup - lookup bctx_t for the directory @directory.
- *               (see description of bctx_t in bdb.h)
- *
- * @table:     bctx_table_t for this instance of bdb.
- * @directory: directory for which bctx_t is being looked up.
- */
-bctx_t *
-bctx_lookup (bctx_table_t *table,
-             const char *directory)
-{
-        char    *key = NULL;
-        uint32_t key_hash = 0;
-        bctx_t  *trav = NULL, *bctx = NULL, *tmp = NULL;
-        int32_t  need_break = 0;
-
-        GF_VALIDATE_OR_GOTO ("bctx", table, out);
-        GF_VALIDATE_OR_GOTO ("bctx", directory, out);
-
-        MAKE_KEY_FROM_PATH (key, directory);
-        key_hash = bdb_key_hash (key, table->hash_size);
-
-        LOCK (&table->lock);
-        {
-                if (list_empty (&table->b_hash[key_hash])) {
-                        goto creat_bctx;
-                }
-
-                list_for_each_entry_safe (trav, tmp, &table->b_hash[key_hash],
-                                          b_hash) {
-                        LOCK(&trav->lock);
-                        {
-                                if (!strcmp(trav->directory, directory)) {
-                                        bctx = __bctx_ref (trav);
-                                        need_break = 1;
-                                }
-                        }
-                        UNLOCK(&trav->lock);
-
-                        if (need_break)
-                                break;
-                }
-
-        creat_bctx:
-                if (!bctx) {
-                        bctx = __create_bctx (table, directory);
-                        bctx = __bctx_ref (bctx);
-                }
-        }
-        UNLOCK (&table->lock);
-out:
-        return bctx;
-}
-
-
-bctx_t *
-bctx_parent (bctx_table_t *table,
-             const char *path)
-{
-        char   *pathname = NULL, *directory = NULL;
-        bctx_t *bctx = NULL;
-
-        GF_VALIDATE_OR_GOTO ("bctx", table, out);
-        GF_VALIDATE_OR_GOTO ("bctx", path, out);
-
-        pathname = gf_strdup (path);
-        GF_VALIDATE_OR_GOTO ("bctx", pathname, out);
-        directory = dirname (pathname);
-
-        bctx = bctx_lookup (table, directory);
-        GF_VALIDATE_OR_GOTO ("bctx", bctx, out);
-
-out:
-        if (pathname)
-                free (pathname);
-        return bctx;
-}