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Kirill Smelkov
mariadb
Commits
78ff4943
Commit
78ff4943
authored
Apr 29, 2005
by
jimw@mysql.com
Browse files
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Manually resolve merge
parents
fa41a96c
1476213e
Changes
5
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Showing
5 changed files
with
119 additions
and
21 deletions
+119
-21
libmysqld/emb_qcache.cc
libmysqld/emb_qcache.cc
+18
-18
libmysqld/emb_qcache.h
libmysqld/emb_qcache.h
+24
-3
mysql-test/r/query_cache.result
mysql-test/r/query_cache.result
+27
-0
mysql-test/t/query_cache.test
mysql-test/t/query_cache.test
+45
-0
sql/sql_cache.cc
sql/sql_cache.cc
+5
-0
No files found.
libmysqld/emb_qcache.cc
View file @
78ff4943
...
@@ -22,7 +22,7 @@
...
@@ -22,7 +22,7 @@
void
Querycache_stream
::
store_char
(
char
c
)
void
Querycache_stream
::
store_char
(
char
c
)
{
{
if
(
data_end
==
cur_data
)
if
(
data_end
==
cur_data
)
use_next_block
();
use_next_block
(
TRUE
);
*
(
cur_data
++
)
=
c
;
*
(
cur_data
++
)
=
c
;
#ifndef DBUG_OFF
#ifndef DBUG_OFF
stored_size
++
;
stored_size
++
;
...
@@ -42,13 +42,13 @@ void Querycache_stream::store_short(ushort s)
...
@@ -42,13 +42,13 @@ void Querycache_stream::store_short(ushort s)
}
}
if
(
data_end
==
cur_data
)
if
(
data_end
==
cur_data
)
{
{
use_next_block
();
use_next_block
(
TRUE
);
int2store
(
cur_data
,
s
);
int2store
(
cur_data
,
s
);
cur_data
+=
2
;
cur_data
+=
2
;
return
;
return
;
}
}
*
cur_data
=
((
byte
*
)(
&
s
))[
0
];
*
cur_data
=
((
byte
*
)(
&
s
))[
0
];
use_next_block
();
use_next_block
(
TRUE
);
*
(
cur_data
++
)
=
((
byte
*
)(
&
s
))[
1
];
*
(
cur_data
++
)
=
((
byte
*
)(
&
s
))[
1
];
}
}
...
@@ -66,7 +66,7 @@ void Querycache_stream::store_int(uint i)
...
@@ -66,7 +66,7 @@ void Querycache_stream::store_int(uint i)
}
}
if
(
!
rest_len
)
if
(
!
rest_len
)
{
{
use_next_block
();
use_next_block
(
TRUE
);
int4store
(
cur_data
,
i
);
int4store
(
cur_data
,
i
);
cur_data
+=
4
;
cur_data
+=
4
;
return
;
return
;
...
@@ -74,7 +74,7 @@ void Querycache_stream::store_int(uint i)
...
@@ -74,7 +74,7 @@ void Querycache_stream::store_int(uint i)
char
buf
[
4
];
char
buf
[
4
];
int4store
(
buf
,
i
);
int4store
(
buf
,
i
);
memcpy
(
cur_data
,
buf
,
rest_len
);
memcpy
(
cur_data
,
buf
,
rest_len
);
use_next_block
();
use_next_block
(
TRUE
);
memcpy
(
cur_data
,
buf
+
rest_len
,
4
-
rest_len
);
memcpy
(
cur_data
,
buf
+
rest_len
,
4
-
rest_len
);
cur_data
+=
4
-
rest_len
;
cur_data
+=
4
-
rest_len
;
}
}
...
@@ -93,13 +93,13 @@ void Querycache_stream::store_ll(ulonglong ll)
...
@@ -93,13 +93,13 @@ void Querycache_stream::store_ll(ulonglong ll)
}
}
if
(
!
rest_len
)
if
(
!
rest_len
)
{
{
use_next_block
();
use_next_block
(
TRUE
);
int8store
(
cur_data
,
ll
);
int8store
(
cur_data
,
ll
);
cur_data
+=
8
;
cur_data
+=
8
;
return
;
return
;
}
}
memcpy
(
cur_data
,
&
ll
,
rest_len
);
memcpy
(
cur_data
,
&
ll
,
rest_len
);
use_next_block
();
use_next_block
(
TRUE
);
memcpy
(
cur_data
,
((
byte
*
)
&
ll
)
+
rest_len
,
8
-
rest_len
);
memcpy
(
cur_data
,
((
byte
*
)
&
ll
)
+
rest_len
,
8
-
rest_len
);
cur_data
+=
8
-
rest_len
;
cur_data
+=
8
-
rest_len
;
}
}
...
@@ -112,14 +112,14 @@ void Querycache_stream::store_str_only(const char *str, uint str_len)
...
@@ -112,14 +112,14 @@ void Querycache_stream::store_str_only(const char *str, uint str_len)
do
do
{
{
size_t
rest_len
=
data_end
-
cur_data
;
size_t
rest_len
=
data_end
-
cur_data
;
if
(
rest_len
>
str_len
)
if
(
rest_len
>
=
str_len
)
{
{
memcpy
(
cur_data
,
str
,
str_len
);
memcpy
(
cur_data
,
str
,
str_len
);
cur_data
+=
str_len
;
cur_data
+=
str_len
;
return
;
return
;
}
}
memcpy
(
cur_data
,
str
,
rest_len
);
memcpy
(
cur_data
,
str
,
rest_len
);
use_next_block
();
use_next_block
(
TRUE
);
str_len
-=
rest_len
;
str_len
-=
rest_len
;
str
+=
rest_len
;
str
+=
rest_len
;
}
while
(
str_len
);
}
while
(
str_len
);
...
@@ -145,7 +145,7 @@ void Querycache_stream::store_safe_str(const char *str, uint str_len)
...
@@ -145,7 +145,7 @@ void Querycache_stream::store_safe_str(const char *str, uint str_len)
char
Querycache_stream
::
load_char
()
char
Querycache_stream
::
load_char
()
{
{
if
(
cur_data
==
data_end
)
if
(
cur_data
==
data_end
)
use_next_block
();
use_next_block
(
FALSE
);
return
*
(
cur_data
++
);
return
*
(
cur_data
++
);
}
}
...
@@ -160,13 +160,13 @@ ushort Querycache_stream::load_short()
...
@@ -160,13 +160,13 @@ ushort Querycache_stream::load_short()
}
}
if
(
data_end
==
cur_data
)
if
(
data_end
==
cur_data
)
{
{
use_next_block
();
use_next_block
(
FALSE
);
result
=
uint2korr
(
cur_data
);
result
=
uint2korr
(
cur_data
);
cur_data
+=
2
;
cur_data
+=
2
;
return
result
;
return
result
;
}
}
((
byte
*
)
&
result
)[
0
]
=
*
cur_data
;
((
byte
*
)
&
result
)[
0
]
=
*
cur_data
;
use_next_block
();
use_next_block
(
FALSE
);
((
byte
*
)
&
result
)[
1
]
=
*
(
cur_data
++
);
((
byte
*
)
&
result
)[
1
]
=
*
(
cur_data
++
);
return
result
;
return
result
;
}
}
...
@@ -183,14 +183,14 @@ uint Querycache_stream::load_int()
...
@@ -183,14 +183,14 @@ uint Querycache_stream::load_int()
}
}
if
(
!
rest_len
)
if
(
!
rest_len
)
{
{
use_next_block
();
use_next_block
(
FALSE
);
result
=
uint4korr
(
cur_data
);
result
=
uint4korr
(
cur_data
);
cur_data
+=
4
;
cur_data
+=
4
;
return
result
;
return
result
;
}
}
char
buf
[
4
];
char
buf
[
4
];
memcpy
(
buf
,
cur_data
,
rest_len
);
memcpy
(
buf
,
cur_data
,
rest_len
);
use_next_block
();
use_next_block
(
FALSE
);
memcpy
(
buf
+
rest_len
,
cur_data
,
4
-
rest_len
);
memcpy
(
buf
+
rest_len
,
cur_data
,
4
-
rest_len
);
cur_data
+=
4
-
rest_len
;
cur_data
+=
4
-
rest_len
;
result
=
uint4korr
(
buf
);
result
=
uint4korr
(
buf
);
...
@@ -209,13 +209,13 @@ ulonglong Querycache_stream::load_ll()
...
@@ -209,13 +209,13 @@ ulonglong Querycache_stream::load_ll()
}
}
if
(
!
rest_len
)
if
(
!
rest_len
)
{
{
use_next_block
();
use_next_block
(
FALSE
);
result
=
uint8korr
(
cur_data
);
result
=
uint8korr
(
cur_data
);
cur_data
+=
8
;
cur_data
+=
8
;
return
result
;
return
result
;
}
}
memcpy
(
&
result
,
cur_data
,
rest_len
);
memcpy
(
&
result
,
cur_data
,
rest_len
);
use_next_block
();
use_next_block
(
FALSE
);
memcpy
(((
byte
*
)
&
result
)
+
rest_len
,
cur_data
,
8
-
rest_len
);
memcpy
(((
byte
*
)
&
result
)
+
rest_len
,
cur_data
,
8
-
rest_len
);
cur_data
+=
8
-
rest_len
;
cur_data
+=
8
-
rest_len
;
return
result
;
return
result
;
...
@@ -226,7 +226,7 @@ void Querycache_stream::load_str_only(char *buffer, uint str_len)
...
@@ -226,7 +226,7 @@ void Querycache_stream::load_str_only(char *buffer, uint str_len)
do
do
{
{
size_t
rest_len
=
data_end
-
cur_data
;
size_t
rest_len
=
data_end
-
cur_data
;
if
(
rest_len
>
str_len
)
if
(
rest_len
>
=
str_len
)
{
{
memcpy
(
buffer
,
cur_data
,
str_len
);
memcpy
(
buffer
,
cur_data
,
str_len
);
cur_data
+=
str_len
;
cur_data
+=
str_len
;
...
@@ -234,7 +234,7 @@ void Querycache_stream::load_str_only(char *buffer, uint str_len)
...
@@ -234,7 +234,7 @@ void Querycache_stream::load_str_only(char *buffer, uint str_len)
break
;
break
;
}
}
memcpy
(
buffer
,
cur_data
,
rest_len
);
memcpy
(
buffer
,
cur_data
,
rest_len
);
use_next_block
();
use_next_block
(
FALSE
);
str_len
-=
rest_len
;
str_len
-=
rest_len
;
buffer
+=
rest_len
;
buffer
+=
rest_len
;
}
while
(
str_len
);
}
while
(
str_len
);
...
...
libmysqld/emb_qcache.h
View file @
78ff4943
...
@@ -22,22 +22,43 @@ class Querycache_stream
...
@@ -22,22 +22,43 @@ class Querycache_stream
uint
headers_len
;
uint
headers_len
;
public:
public:
#ifndef DBUG_OFF
#ifndef DBUG_OFF
Query_cache_block
*
first_block
;
uint
stored_size
;
uint
stored_size
;
#endif
#endif
Querycache_stream
(
Query_cache_block
*
ini_block
,
uint
ini_headers_len
)
:
Querycache_stream
(
Query_cache_block
*
ini_block
,
uint
ini_headers_len
)
:
block
(
ini_block
),
headers_len
(
ini_headers_len
)
block
(
ini_block
),
headers_len
(
ini_headers_len
)
{
{
use_next_block
();
cur_data
=
((
byte
*
)
block
)
+
headers_len
;
data_end
=
cur_data
+
(
block
->
used
-
headers_len
);
#ifndef DBUG_OFF
#ifndef DBUG_OFF
first_block
=
ini_block
;
stored_size
=
0
;
stored_size
=
0
;
#endif
#endif
}
}
void
use_next_block
()
void
use_next_block
(
bool
writing
)
{
{
/*
This shouldn't be called if there is only one block, or to loop
around to the first block again. That means we're trying to write
more data than we allocated space for.
*/
DBUG_ASSERT
(
block
->
next
!=
block
);
DBUG_ASSERT
(
block
->
next
!=
first_block
);
block
=
block
->
next
;
/*
While writing, update the type of each block as we write to it.
While reading, make sure that the block is of the expected type.
*/
if
(
writing
)
block
->
type
=
Query_cache_block
::
RES_CONT
;
else
DBUG_ASSERT
(
block
->
type
==
Query_cache_block
::
RES_CONT
);
cur_data
=
((
byte
*
)
block
)
+
headers_len
;
cur_data
=
((
byte
*
)
block
)
+
headers_len
;
data_end
=
cur_data
+
(
block
->
used
-
headers_len
);
data_end
=
cur_data
+
(
block
->
used
-
headers_len
);
}
}
void
store_char
(
char
c
);
void
store_char
(
char
c
);
void
store_short
(
ushort
s
);
void
store_short
(
ushort
s
);
void
store_int
(
uint
i
);
void
store_int
(
uint
i
);
...
...
mysql-test/r/query_cache.result
View file @
78ff4943
...
@@ -944,4 +944,31 @@ show status like 'qcache_queries_in_cache';
...
@@ -944,4 +944,31 @@ show status like 'qcache_queries_in_cache';
Variable_name Value
Variable_name Value
Qcache_queries_in_cache 0
Qcache_queries_in_cache 0
drop table t1;
drop table t1;
set GLOBAL query_cache_size=64*1024;
create table t1 (a text);
insert into t1 values (repeat('abcdefghijklmnopqrstuvwxyz', 550));
create table t2 (a text);
insert into t2 values (repeat('ijklmnopqrstuvwxyzabcdefgh', 550));
select a from t1;
select a from t2;
show status like 'Qcache_%_blocks';
Variable_name Value
Qcache_free_blocks 1
Qcache_total_blocks 7
insert into t1 select reverse(a) from t1;
show status like 'Qcache_%_blocks';
Variable_name Value
Qcache_free_blocks 2
Qcache_total_blocks 5
select a from t1;
show status like 'Qcache_%_blocks';
Variable_name Value
Qcache_free_blocks 1
Qcache_total_blocks 8
select a from t1;
a
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flush query cache;
drop table t1, t2;
set GLOBAL query_cache_size=0;
set GLOBAL query_cache_size=0;
mysql-test/t/query_cache.test
View file @
78ff4943
...
@@ -685,4 +685,49 @@ repair table t1;
...
@@ -685,4 +685,49 @@ repair table t1;
show
status
like
'qcache_queries_in_cache'
;
show
status
like
'qcache_queries_in_cache'
;
drop
table
t1
;
drop
table
t1
;
# Bug #9549: Make sure cached queries that span more than one cache block
# are handled properly in the embedded server.
# We just want a small query cache, so we can fragment it easily
set
GLOBAL
query_cache_size
=
64
*
1024
;
# This actually gives us a usable cache size of about 48K
# Each table is about 14K
create
table
t1
(
a
text
);
insert
into
t1
values
(
repeat
(
'abcdefghijklmnopqrstuvwxyz'
,
550
));
create
table
t2
(
a
text
);
insert
into
t2
values
(
repeat
(
'ijklmnopqrstuvwxyzabcdefgh'
,
550
));
# Load a query from each table into the query cache
--
disable_result_log
select
a
from
t1
;
# Q1
select
a
from
t2
;
# Q2
--
enable_result_log
show
status
like
'Qcache_%_blocks'
;
# Now the cache looks like (14K for Q1)(14K for Q2)(20K free)
# Flush Q1 from the cache by adding an out-of-order chunk to t1
insert
into
t1
select
reverse
(
a
)
from
t1
;
show
status
like
'Qcache_%_blocks'
;
# Now the cache looks like (14K free)(14K for Q2)(20K free)
# Load our new data into the query cache
--
disable_result_log
select
a
from
t1
;
# Q3
--
enable_result_log
show
status
like
'Qcache_%_blocks'
;
# Now the cache should be like (14K for Q3)(14K for Q2)(14K for Q3)(6K free)
# Note that Q3 is split across two chunks!
# Load Q3 from the cache, and actually pay attention to the results
select
a
from
t1
;
flush
query
cache
;
drop
table
t1
,
t2
;
set
GLOBAL
query_cache_size
=
0
;
set
GLOBAL
query_cache_size
=
0
;
sql/sql_cache.cc
View file @
78ff4943
...
@@ -1933,6 +1933,11 @@ my_bool Query_cache::write_result_data(Query_cache_block **result_block,
...
@@ -1933,6 +1933,11 @@ my_bool Query_cache::write_result_data(Query_cache_block **result_block,
type
=
Query_cache_block
::
RES_CONT
;
type
=
Query_cache_block
::
RES_CONT
;
}
while
(
block
!=
*
result_block
);
}
while
(
block
!=
*
result_block
);
#else
#else
/*
Set type of first block, emb_store_querycache_result() will handle
the others.
*/
(
*
result_block
)
->
type
=
type
;
Querycache_stream
qs
(
*
result_block
,
headers_len
);
Querycache_stream
qs
(
*
result_block
,
headers_len
);
emb_store_querycache_result
(
&
qs
,
(
THD
*
)
data
);
emb_store_querycache_result
(
&
qs
,
(
THD
*
)
data
);
#endif
/*!EMBEDDED_LIBRARY*/
#endif
/*!EMBEDDED_LIBRARY*/
...
...
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