database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-09-02 09:41:40 +03:00
Code Activity

Reduce the next-key locking of READ UNCOMMITTED to match that of

Browse Source 
READ COMMITTED in the built-in InnoDB. (Bug #48607)
This commit is contained in:
Marko Makela
2010-04-29 15:29:45 +02:00
parent 74ae1326c9
commit 0ca989eaaf
4 changed files with 18 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
storage/innobase/handler/ha_innodb.cc
View File

@@ -4435,7 +4435,7 @@ ha_innobase::unlock_row(void)
case ROW_READ_WITH_LOCKS:
if (!srv_locks_unsafe_for_binlog
&& prebuilt->trx->isolation_level
!= TRX_ISO_READ_COMMITTED) {
> TRX_ISO_READ_COMMITTED) {
break;
}
/* fall through */
@@ -4472,7 +4472,7 @@ ha_innobase::try_semi_consistent_read(bool yes)
if (yes
&& (srv_locks_unsafe_for_binlog
|| prebuilt->trx->isolation_level == TRX_ISO_READ_COMMITTED)) {
|| prebuilt->trx->isolation_level <= TRX_ISO_READ_COMMITTED)) {
prebuilt->row_read_type = ROW_READ_TRY_SEMI_CONSISTENT;
} else {
prebuilt->row_read_type = ROW_READ_WITH_LOCKS;
@@ -7768,7 +7768,7 @@ ha_innobase::store_lock(
isolation_level = trx->isolation_level;
if ((srv_locks_unsafe_for_binlog
|| isolation_level == TRX_ISO_READ_COMMITTED)
|| isolation_level <= TRX_ISO_READ_COMMITTED)
&& isolation_level != TRX_ISO_SERIALIZABLE
&& (lock_type == TL_READ || lock_type == TL_READ_NO_INSERT)
&& (sql_command == SQLCOM_INSERT_SELECT

2
storage/innobase/lock/lock0lock.c
View File

@@ -2362,7 +2362,7 @@ lock_rec_inherit_to_gap(
if (!lock_rec_get_insert_intention(lock)
&& !((srv_locks_unsafe_for_binlog
|| lock->trx->isolation_level
== TRX_ISO_READ_COMMITTED)
<= TRX_ISO_READ_COMMITTED)
&& lock_get_mode(lock) == LOCK_X)) {
lock_rec_add_to_queue(LOCK_REC | lock_get_mode(lock)

2
storage/innobase/row/row0mysql.c
View File

@@ -1485,7 +1485,7 @@ row_unlock_for_mysql(
if (UNIV_UNLIKELY
(!srv_locks_unsafe_for_binlog
&& trx->isolation_level != TRX_ISO_READ_COMMITTED)) {
&& trx->isolation_level > TRX_ISO_READ_COMMITTED)) {
fprintf(stderr,
"InnoDB: Error: calling row_unlock_for_mysql though\n"

26
storage/innobase/row/row0sel.c
View File

@@ -744,7 +744,7 @@ row_sel_get_clust_rec(
trx = thr_get_trx(thr);
if (srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED) {
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED) {
lock_type = LOCK_REC_NOT_GAP;
} else {
lock_type = LOCK_ORDINARY;
@@ -1358,7 +1358,7 @@ rec_loop:
if (srv_locks_unsafe_for_binlog
|| trx->isolation_level
== TRX_ISO_READ_COMMITTED) {
<= TRX_ISO_READ_COMMITTED) {
if (page_rec_is_supremum(next_rec)) {
@@ -1414,7 +1414,7 @@ skip_lock:
trx = thr_get_trx(thr);
if (srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED) {
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED) {
if (page_rec_is_supremum(rec)) {
@@ -3596,7 +3596,7 @@ shortcut_fails_too_big_rec:
&& !page_rec_is_supremum(rec)
&& set_also_gap_locks
&& !(srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED)
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED)
&& prebuilt->select_lock_type != LOCK_NONE) {
/* Try to place a gap lock on the next index record
@@ -3692,7 +3692,7 @@ rec_loop:
if (set_also_gap_locks
&& !(srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED)
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED)
&& prebuilt->select_lock_type != LOCK_NONE) {
/* Try to place a lock on the index record */
@@ -3827,7 +3827,7 @@ wrong_offs:
if (set_also_gap_locks
&& !(srv_locks_unsafe_for_binlog
|| trx->isolation_level
== TRX_ISO_READ_COMMITTED)
<= TRX_ISO_READ_COMMITTED)
&& prebuilt->select_lock_type != LOCK_NONE) {
/* Try to place a gap lock on the index
@@ -3862,7 +3862,7 @@ wrong_offs:
if (set_also_gap_locks
&& !(srv_locks_unsafe_for_binlog
|| trx->isolation_level
== TRX_ISO_READ_COMMITTED)
<= TRX_ISO_READ_COMMITTED)
&& prebuilt->select_lock_type != LOCK_NONE) {
/* Try to place a gap lock on the index
@@ -3909,7 +3909,7 @@ wrong_offs:
if (!set_also_gap_locks
|| srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED
|| (unique_search
&& !UNIV_UNLIKELY(rec_get_deleted_flag(rec, comp)))) {
@@ -3947,7 +3947,7 @@ no_gap_lock:
rec_t* old_vers;
case DB_SUCCESS:
if (srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED) {
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED) {
/* Note that a record of
prebuilt->index was locked. */
prebuilt->new_rec_locks = 1;
@@ -4081,7 +4081,7 @@ no_gap_lock:
/* The record is delete-marked: we can skip it */
if ((srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED)
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED)
&& prebuilt->select_lock_type != LOCK_NONE
&& !did_semi_consistent_read) {
@@ -4148,7 +4148,7 @@ requires_clust_rec:
}
if ((srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED)
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED)
&& prebuilt->select_lock_type != LOCK_NONE) {
/* Note that both the secondary index record
and the clustered index record were locked. */
@@ -4161,7 +4161,7 @@ requires_clust_rec:
/* The record is delete marked: we can skip it */
if ((srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED)
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED)
&& prebuilt->select_lock_type != LOCK_NONE) {
/* No need to keep a lock on a delete-marked
@@ -4368,7 +4368,7 @@ lock_wait_or_error:
moves_up, &mtr);
if ((srv_locks_unsafe_for_binlog
|| trx->isolation_level == TRX_ISO_READ_COMMITTED)
|| trx->isolation_level <= TRX_ISO_READ_COMMITTED)
&& !same_user_rec) {
/* Since we were not able to restore the cursor