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[t:1949], abstract transaction creation to own function for reuse in start_stmt

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git-svn-id: file:///svn/mysql/tokudb-engine/src@14184 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
Zardosht Kasheff 2013-04-17 00:01:53 -04:00 committed by Yoni Fogel
parent 3c6b7cd274
commit e2cba2d4ed
2 changed files with 61 additions and 47 deletions
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107
storage/tokudb/ha_tokudb.cc
View file

@ -415,7 +415,6 @@ smart_dbt_callback_ir_keyread(DBT const *key, DBT const *row, void *context) {
//
static int
smart_dbt_callback_ir_rowread(DBT const *key, DBT const *row, void *context) {
int cmp;
INDEX_READ_INFO ir_info = (INDEX_READ_INFO)context;
ir_info->cmp = ir_info->smart_dbt_info.ha->prefix_cmp_dbts(ir_info->smart_dbt_info.keynr, ir_info->orig_key, key);
if (ir_info->cmp) {
@ -4054,6 +4053,59 @@ cleanup:
}
int ha_tokudb::create_txn(THD* thd, tokudb_trx_data* trx) {
int error;
ulong tx_isolation = thd_tx_isolation(thd);
HA_TOKU_ISO_LEVEL toku_iso_level = tx_to_toku_iso(tx_isolation);
/* First table lock, start transaction */
if ((thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) &&
!trx->all &&
(thd_sql_command(thd) != SQLCOM_CREATE_TABLE) &&
(thd_sql_command(thd) != SQLCOM_DROP_TABLE) &&
(thd_sql_command(thd) != SQLCOM_ALTER_TABLE)) {
/* QQQ We have to start a master transaction */
DBUG_PRINT("trans", ("starting transaction all: options: 0x%lx", (ulong) thd->options));
//
// set the isolation level for the tranaction
//
trx->iso_level = toku_iso_level;
if ((error = db_env->txn_begin(db_env, NULL, &trx->all, toku_iso_to_txn_flag(toku_iso_level)))) {
trx->tokudb_lock_count--; // We didn't get the lock
goto cleanup;
}
if (tokudb_debug & TOKUDB_DEBUG_TXN) {
TOKUDB_TRACE("master:%p\n", trx->all);
}
trx->sp_level = trx->all;
trans_register_ha(thd, TRUE, tokudb_hton);
}
DBUG_PRINT("trans", ("starting transaction stmt"));
if (trx->stmt) {
if (tokudb_debug & TOKUDB_DEBUG_TXN) {
TOKUDB_TRACE("warning:stmt=%p\n", trx->stmt);
}
}
u_int32_t txn_begin_flags;
if (trx->iso_level == hatoku_iso_not_set) {
txn_begin_flags = toku_iso_to_txn_flag(toku_iso_level);
}
else {
txn_begin_flags = toku_iso_to_txn_flag(trx->iso_level);
}
if ((error = db_env->txn_begin(db_env, trx->sp_level, &trx->stmt, txn_begin_flags))) {
/* We leave the possible master transaction open */
trx->tokudb_lock_count--; // We didn't get the lock
goto cleanup;
}
if (tokudb_debug & TOKUDB_DEBUG_TXN) {
TOKUDB_TRACE("stmt:%p:%p\n", trx->sp_level, trx->stmt);
}
trans_register_ha(thd, FALSE, tokudb_hton);
cleanup:
return error;
}
/*
As MySQL will execute an external lock for every new table it uses
@ -4077,8 +4129,6 @@ int ha_tokudb::external_lock(THD * thd, int lock_type) {
TOKUDB_TRACE("%s cmd=%d %d\n", __FUNCTION__, thd_sql_command(thd), lock_type);
// QQQ this is here to allow experiments without transactions
int error = 0;
ulong tx_isolation = thd_tx_isolation(thd);
HA_TOKU_ISO_LEVEL toku_iso_level = tx_to_toku_iso(tx_isolation);
tokudb_trx_data *trx = NULL;
#if 0
declare_lockretry;
@ -4108,50 +4158,10 @@ int ha_tokudb::external_lock(THD * thd, int lock_type) {
if (!trx->tokudb_lock_count++) {
DBUG_ASSERT(trx->stmt == 0);
transaction = NULL; // Safety
/* First table lock, start transaction */
if ((thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) &&
!trx->all &&
(thd_sql_command(thd) != SQLCOM_CREATE_TABLE) &&
(thd_sql_command(thd) != SQLCOM_DROP_TABLE) &&
(thd_sql_command(thd) != SQLCOM_ALTER_TABLE)) {
/* QQQ We have to start a master transaction */
DBUG_PRINT("trans", ("starting transaction all: options: 0x%lx", (ulong) thd->options));
//
// set the isolation level for the tranaction
//
trx->iso_level = toku_iso_level;
if ((error = db_env->txn_begin(db_env, NULL, &trx->all, toku_iso_to_txn_flag(toku_iso_level)))) {
trx->tokudb_lock_count--; // We didn't get the lock
goto cleanup;
}
if (tokudb_debug & TOKUDB_DEBUG_TXN) {
TOKUDB_TRACE("master:%p\n", trx->all);
}
trx->sp_level = trx->all;
trans_register_ha(thd, TRUE, tokudb_hton);
}
DBUG_PRINT("trans", ("starting transaction stmt"));
if (trx->stmt) {
if (tokudb_debug & TOKUDB_DEBUG_TXN) {
TOKUDB_TRACE("warning:stmt=%p\n", trx->stmt);
}
}
u_int32_t txn_begin_flags;
if (trx->iso_level == hatoku_iso_not_set) {
txn_begin_flags = toku_iso_to_txn_flag(toku_iso_level);
}
else {
txn_begin_flags = toku_iso_to_txn_flag(trx->iso_level);
}
if ((error = db_env->txn_begin(db_env, trx->sp_level, &trx->stmt, txn_begin_flags))) {
/* We leave the possible master transaction open */
trx->tokudb_lock_count--; // We didn't get the lock
error = create_txn(thd, trx);
if (error) {
goto cleanup;
}
if (tokudb_debug & TOKUDB_DEBUG_TXN) {
TOKUDB_TRACE("stmt:%p:%p\n", trx->sp_level, trx->stmt);
}
trans_register_ha(thd, FALSE, tokudb_hton);
}
transaction = trx->stmt;
}
@ -4219,8 +4229,10 @@ int ha_tokudb::start_stmt(THD * thd, thr_lock_type lock_type) {
*/
if (!trx->stmt) {
DBUG_PRINT("trans", ("starting transaction stmt"));
error = db_env->txn_begin(db_env, trx->sp_level, &trx->stmt, toku_iso_to_txn_flag(trx->iso_level));
trans_register_ha(thd, FALSE, tokudb_hton);
error = create_txn(thd, trx);
if (error) {
goto cleanup;
}
}
//
// we know we are in lock tables
@ -4242,6 +4254,7 @@ int ha_tokudb::start_stmt(THD * thd, thr_lock_type lock_type) {
share->rows_from_locked_table = added_rows - deleted_rows;
}
transaction = trx->stmt;
cleanup:
TOKUDB_DBUG_RETURN(error);
}

1
storage/tokudb/ha_tokudb.h
View file

@ -276,6 +276,7 @@ private:
void set_query_columns(uint keynr);
int prelock_range ( const key_range *start_key, const key_range *end_key);
int create_txn(THD* thd, tokudb_trx_data* trx);