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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2008-2011 WiredTiger, Inc.
* All rights reserved.
*
* $Id$
*/
#include "wt_internal.h"
static int __wt_db_config(DB *);
static int __wt_idb_config(DB *);
static int __wt_idb_destroy(DB *);
/*
* __wt_env_db --
* DB constructor.
*/
int
__wt_env_db(ENV *env, DB **dbp)
{
DB *db;
IDB *idb;
int ret;
db = NULL;
idb = NULL;
/* Create the DB and IDB structures. */
WT_ERR(__wt_calloc(env, 1, sizeof(DB), &db));
WT_ERR(__wt_calloc(env, 1, sizeof(IDB), &idb));
/* Connect everything together. */
db->idb = idb;
idb->db = db;
db->env = env;
/* Configure the DB and the IDB. */
WT_ERR(__wt_db_config(db));
WT_ERR(__wt_idb_config(db));
*dbp = db;
return (0);
err: (void)__wt_db_destroy(db);
return (ret);
}
/*
* __wt_db_config --
* Set configuration for a just-created DB handle.
*/
static int
__wt_db_config(DB *db)
{
__wt_methods_db_config_default(db);
__wt_methods_db_lockout(db);
__wt_methods_db_init_transition(db);
return (0);
}
/*
* __wt_idb_config --
* Set configuration for a just-created IDB handle.
*/
static int
__wt_idb_config(DB *db)
{
ENV *env;
IDB *idb;
IENV *ienv;
env = db->env;
idb = db->idb;
ienv = env->ienv;
idb->db = db;
idb->root_off.addr = idb->free_addr = WT_ADDR_INVALID;
__wt_lock(env, ienv->mtx); /* Add to the ENV's list */
TAILQ_INSERT_TAIL(&ienv->dbqh, idb, q);
++ienv->dbqcnt;
__wt_unlock(env, ienv->mtx);
WT_RET(__wt_stat_alloc_db_stats(env, &idb->stats));
WT_RET(__wt_stat_alloc_database_stats(env, &idb->dstats));
return (0);
}
/*
* __wt_db_destroy --
* DB handle destructor.
*/
int
__wt_db_destroy(DB *db)
{
ENV *env;
int ret;
env = db->env;
/* Discard the underlying IDB object. */
ret = __wt_idb_destroy(db);
/* Discard the DB object. */
__wt_free(env, db, sizeof(DB));
return (ret);
}
/*
* __wt_idb_destroy --
* IDB handle destructor.
*/
static int
__wt_idb_destroy(DB *db)
{
ENV *env;
IDB *idb;
IENV *ienv;
int ret;
env = db->env;
idb = db->idb;
ienv = env->ienv;
ret = 0;
/* Check that there's something to close. */
if (idb == NULL)
return (0);
/* Diagnostic check: check flags against approved list. */
WT_ENV_FCHK_RET(env, "Db.close", idb->flags, WT_APIMASK_IDB, ret);
__wt_free(env, idb->name, 0);
if (idb->huffman_key != NULL) {
/* Key and data may use the same table, only close it once. */
if (idb->huffman_data == idb->huffman_key)
idb->huffman_data = NULL;
__wt_huffman_close(env, idb->huffman_key);
idb->huffman_key = NULL;
}
if (idb->huffman_data != NULL) {
__wt_huffman_close(env, idb->huffman_data);
idb->huffman_data = NULL;
}
__wt_walk_end(env, &idb->evict_walk);
__wt_free(env, idb->stats, 0);
__wt_free(env, idb->dstats, 0);
__wt_lock(env, ienv->mtx); /* Delete from the ENV's list */
TAILQ_REMOVE(&ienv->dbqh, idb, q);
--ienv->dbqcnt;
__wt_unlock(env, ienv->mtx);
__wt_free(env, idb, sizeof(IDB));
db->idb = NULL;
return (ret);
}
int
__wt_db_lockout_err(DB *db)
{
__wt_api_db_errx(db,
"This Db handle has failed for some reason, and can no longer "
"be used; the only method permitted on it is Db.close which "
"discards the handle permanently");
return (WT_ERROR);
}
int
__wt_db_lockout_open(DB *db)
{
__wt_api_db_errx(db,
"This method may not be called until after the Db.open method has "
"been called");
return (WT_ERROR);
}
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