Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
M
MariaDB
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Issues
0
Issues
0
List
Boards
Labels
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Analytics
Analytics
CI / CD
Repository
Value Stream
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
nexedi
MariaDB
Commits
bd178801
Commit
bd178801
authored
Apr 29, 2010
by
Marko Makela
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
Reduce the next-key locking of READ UNCOMMITTED to match that of
READ COMMITTED in the InnoDB Plugin. (Bug #48607)
parent
792ea1f6
Changes
5
Hide whitespace changes
Inline
Side-by-side
Showing
5 changed files
with
25 additions
and
18 deletions
+25
-18
storage/innodb_plugin/ChangeLog
storage/innodb_plugin/ChangeLog
+7
-0
storage/innodb_plugin/handler/ha_innodb.cc
storage/innodb_plugin/handler/ha_innodb.cc
+3
-3
storage/innodb_plugin/lock/lock0lock.c
storage/innodb_plugin/lock/lock0lock.c
+1
-1
storage/innodb_plugin/row/row0mysql.c
storage/innodb_plugin/row/row0mysql.c
+1
-1
storage/innodb_plugin/row/row0sel.c
storage/innodb_plugin/row/row0sel.c
+13
-13
No files found.
storage/innodb_plugin/ChangeLog
View file @
bd178801
2010-04-27 The InnoDB Team
* handler/ha_innodb.cc, lock/lock0lock.c, row/row0mysql.c,
row/row0sel.c:
Fix Bug#48607 READ UNCOMMITTED uses more locks than READ COMMITTED
in InnoDB 5.1+
2010-04-26 The InnoDB Team
2010-04-26 The InnoDB Team
* row/row0sel.c:
* row/row0sel.c:
...
...
storage/innodb_plugin/handler/ha_innodb.cc
View file @
bd178801
...
@@ -5137,7 +5137,7 @@ ha_innobase::unlock_row(void)
...
@@ -5137,7 +5137,7 @@ ha_innobase::unlock_row(void)
case
ROW_READ_WITH_LOCKS
:
case
ROW_READ_WITH_LOCKS
:
if
(
!
srv_locks_unsafe_for_binlog
if
(
!
srv_locks_unsafe_for_binlog
&&
prebuilt
->
trx
->
isolation_level
&&
prebuilt
->
trx
->
isolation_level
!=
TRX_ISO_READ_COMMITTED
)
{
>
TRX_ISO_READ_COMMITTED
)
{
break
;
break
;
}
}
/* fall through */
/* fall through */
...
@@ -5176,7 +5176,7 @@ ha_innobase::try_semi_consistent_read(bool yes)
...
@@ -5176,7 +5176,7 @@ ha_innobase::try_semi_consistent_read(bool yes)
if
(
yes
if
(
yes
&&
(
srv_locks_unsafe_for_binlog
&&
(
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
;
prebuilt
->
row_read_type
=
ROW_READ_TRY_SEMI_CONSISTENT
;
}
else
{
}
else
{
prebuilt
->
row_read_type
=
ROW_READ_WITH_LOCKS
;
prebuilt
->
row_read_type
=
ROW_READ_WITH_LOCKS
;
...
@@ -9095,7 +9095,7 @@ ha_innobase::store_lock(
...
@@ -9095,7 +9095,7 @@ ha_innobase::store_lock(
isolation_level
=
trx
->
isolation_level
;
isolation_level
=
trx
->
isolation_level
;
if
((
srv_locks_unsafe_for_binlog
if
((
srv_locks_unsafe_for_binlog
||
isolation_level
=
=
TRX_ISO_READ_COMMITTED
)
||
isolation_level
<
=
TRX_ISO_READ_COMMITTED
)
&&
isolation_level
!=
TRX_ISO_SERIALIZABLE
&&
isolation_level
!=
TRX_ISO_SERIALIZABLE
&&
(
lock_type
==
TL_READ
||
lock_type
==
TL_READ_NO_INSERT
)
&&
(
lock_type
==
TL_READ
||
lock_type
==
TL_READ_NO_INSERT
)
&&
(
sql_command
==
SQLCOM_INSERT_SELECT
&&
(
sql_command
==
SQLCOM_INSERT_SELECT
...
...
storage/innodb_plugin/lock/lock0lock.c
View file @
bd178801
...
@@ -2400,7 +2400,7 @@ lock_rec_inherit_to_gap(
...
@@ -2400,7 +2400,7 @@ lock_rec_inherit_to_gap(
if
(
!
lock_rec_get_insert_intention
(
lock
)
if
(
!
lock_rec_get_insert_intention
(
lock
)
&&
!
((
srv_locks_unsafe_for_binlog
&&
!
((
srv_locks_unsafe_for_binlog
||
lock
->
trx
->
isolation_level
||
lock
->
trx
->
isolation_level
=
=
TRX_ISO_READ_COMMITTED
)
<
=
TRX_ISO_READ_COMMITTED
)
&&
lock_get_mode
(
lock
)
==
LOCK_X
))
{
&&
lock_get_mode
(
lock
)
==
LOCK_X
))
{
lock_rec_add_to_queue
(
LOCK_REC
|
LOCK_GAP
lock_rec_add_to_queue
(
LOCK_REC
|
LOCK_GAP
...
...
storage/innodb_plugin/row/row0mysql.c
View file @
bd178801
...
@@ -1458,7 +1458,7 @@ row_unlock_for_mysql(
...
@@ -1458,7 +1458,7 @@ row_unlock_for_mysql(
if
(
UNIV_UNLIKELY
if
(
UNIV_UNLIKELY
(
!
srv_locks_unsafe_for_binlog
(
!
srv_locks_unsafe_for_binlog
&&
trx
->
isolation_level
!=
TRX_ISO_READ_COMMITTED
))
{
&&
trx
->
isolation_level
>
TRX_ISO_READ_COMMITTED
))
{
fprintf
(
stderr
,
fprintf
(
stderr
,
"InnoDB: Error: calling row_unlock_for_mysql though
\n
"
"InnoDB: Error: calling row_unlock_for_mysql though
\n
"
...
...
storage/innodb_plugin/row/row0sel.c
View file @
bd178801
...
@@ -852,7 +852,7 @@ row_sel_get_clust_rec(
...
@@ -852,7 +852,7 @@ row_sel_get_clust_rec(
trx
=
thr_get_trx
(
thr
);
trx
=
thr_get_trx
(
thr
);
if
(
srv_locks_unsafe_for_binlog
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
;
lock_type
=
LOCK_REC_NOT_GAP
;
}
else
{
}
else
{
lock_type
=
LOCK_ORDINARY
;
lock_type
=
LOCK_ORDINARY
;
...
@@ -1465,7 +1465,7 @@ row_sel(
...
@@ -1465,7 +1465,7 @@ row_sel(
if
(
srv_locks_unsafe_for_binlog
if
(
srv_locks_unsafe_for_binlog
||
trx
->
isolation_level
||
trx
->
isolation_level
=
=
TRX_ISO_READ_COMMITTED
)
{
<
=
TRX_ISO_READ_COMMITTED
)
{
if
(
page_rec_is_supremum
(
next_rec
))
{
if
(
page_rec_is_supremum
(
next_rec
))
{
...
@@ -1522,7 +1522,7 @@ row_sel(
...
@@ -1522,7 +1522,7 @@ row_sel(
trx
=
thr_get_trx
(
thr
);
trx
=
thr_get_trx
(
thr
);
if
(
srv_locks_unsafe_for_binlog
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
))
{
if
(
page_rec_is_supremum
(
rec
))
{
...
@@ -3665,7 +3665,7 @@ row_search_for_mysql(
...
@@ -3665,7 +3665,7 @@ row_search_for_mysql(
&&
!
page_rec_is_supremum
(
rec
)
&&
!
page_rec_is_supremum
(
rec
)
&&
set_also_gap_locks
&&
set_also_gap_locks
&&
!
(
srv_locks_unsafe_for_binlog
&&
!
(
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
)
{
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
)
{
/* Try to place a gap lock on the next index record
/* Try to place a gap lock on the next index record
...
@@ -3761,7 +3761,7 @@ row_search_for_mysql(
...
@@ -3761,7 +3761,7 @@ row_search_for_mysql(
if
(
set_also_gap_locks
if
(
set_also_gap_locks
&&
!
(
srv_locks_unsafe_for_binlog
&&
!
(
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
)
{
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
)
{
/* Try to place a lock on the index record */
/* Try to place a lock on the index record */
...
@@ -3895,7 +3895,7 @@ row_search_for_mysql(
...
@@ -3895,7 +3895,7 @@ row_search_for_mysql(
if
(
set_also_gap_locks
if
(
set_also_gap_locks
&&
!
(
srv_locks_unsafe_for_binlog
&&
!
(
srv_locks_unsafe_for_binlog
||
trx
->
isolation_level
||
trx
->
isolation_level
=
=
TRX_ISO_READ_COMMITTED
)
<
=
TRX_ISO_READ_COMMITTED
)
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
)
{
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
)
{
/* Try to place a gap lock on the index
/* Try to place a gap lock on the index
...
@@ -3931,7 +3931,7 @@ row_search_for_mysql(
...
@@ -3931,7 +3931,7 @@ row_search_for_mysql(
if
(
set_also_gap_locks
if
(
set_also_gap_locks
&&
!
(
srv_locks_unsafe_for_binlog
&&
!
(
srv_locks_unsafe_for_binlog
||
trx
->
isolation_level
||
trx
->
isolation_level
=
=
TRX_ISO_READ_COMMITTED
)
<
=
TRX_ISO_READ_COMMITTED
)
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
)
{
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
)
{
/* Try to place a gap lock on the index
/* Try to place a gap lock on the index
...
@@ -3979,7 +3979,7 @@ row_search_for_mysql(
...
@@ -3979,7 +3979,7 @@ row_search_for_mysql(
if
(
!
set_also_gap_locks
if
(
!
set_also_gap_locks
||
srv_locks_unsafe_for_binlog
||
srv_locks_unsafe_for_binlog
||
trx
->
isolation_level
=
=
TRX_ISO_READ_COMMITTED
||
trx
->
isolation_level
<
=
TRX_ISO_READ_COMMITTED
||
(
unique_search
||
(
unique_search
&&
!
UNIV_UNLIKELY
(
rec_get_deleted_flag
(
rec
,
comp
))))
{
&&
!
UNIV_UNLIKELY
(
rec_get_deleted_flag
(
rec
,
comp
))))
{
...
@@ -4018,7 +4018,7 @@ row_search_for_mysql(
...
@@ -4018,7 +4018,7 @@ row_search_for_mysql(
const
rec_t
*
old_vers
;
const
rec_t
*
old_vers
;
case
DB_SUCCESS
:
case
DB_SUCCESS
:
if
(
srv_locks_unsafe_for_binlog
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
/* Note that a record of
prebuilt->index was locked. */
prebuilt->index was locked. */
prebuilt
->
new_rec_locks
=
1
;
prebuilt
->
new_rec_locks
=
1
;
...
@@ -4151,7 +4151,7 @@ row_search_for_mysql(
...
@@ -4151,7 +4151,7 @@ row_search_for_mysql(
/* The record is delete-marked: we can skip it */
/* The record is delete-marked: we can skip it */
if
((
srv_locks_unsafe_for_binlog
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
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
&&
!
did_semi_consistent_read
)
{
&&
!
did_semi_consistent_read
)
{
...
@@ -4218,7 +4218,7 @@ row_search_for_mysql(
...
@@ -4218,7 +4218,7 @@ row_search_for_mysql(
}
}
if
((
srv_locks_unsafe_for_binlog
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
)
{
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
)
{
/* Note that both the secondary index record
/* Note that both the secondary index record
and the clustered index record were locked. */
and the clustered index record were locked. */
...
@@ -4231,7 +4231,7 @@ row_search_for_mysql(
...
@@ -4231,7 +4231,7 @@ row_search_for_mysql(
/* The record is delete marked: we can skip it */
/* The record is delete marked: we can skip it */
if
((
srv_locks_unsafe_for_binlog
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
)
{
&&
prebuilt
->
select_lock_type
!=
LOCK_NONE
)
{
/* No need to keep a lock on a delete-marked
/* No need to keep a lock on a delete-marked
...
@@ -4442,7 +4442,7 @@ row_search_for_mysql(
...
@@ -4442,7 +4442,7 @@ row_search_for_mysql(
moves_up
,
&
mtr
);
moves_up
,
&
mtr
);
if
((
srv_locks_unsafe_for_binlog
if
((
srv_locks_unsafe_for_binlog
||
trx
->
isolation_level
=
=
TRX_ISO_READ_COMMITTED
)
||
trx
->
isolation_level
<
=
TRX_ISO_READ_COMMITTED
)
&&
!
same_user_rec
)
{
&&
!
same_user_rec
)
{
/* Since we were not able to restore the cursor
/* Since we were not able to restore the cursor
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment