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new innodb query cache behaviour (recommit because of problem with 4.1 repository pushing)

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fixed bug in quqry cache dbd transaction processing


mysql-test/r/innodb_cache.result:
  new innodb query cache behaviour
sql/ha_berkeley.h:
  new innodb query cache behaviour
sql/ha_innodb.cc:
  new innodb query cache behaviour
sql/ha_innodb.h:
  new innodb query cache behaviour
sql/handler.cc:
  new innodb query cache behaviour
  fixed bug in transaction support of bdb
sql/handler.h:
  new innodb query cache behaviour
sql/sql_cache.cc:
  new innodb query cache behaviour
sql/sql_cache.h:
  new innodb query cache behaviour
This commit is contained in:
unknown 2002-11-03 10:15:14 +02:00
parent 4358ac0c9f
commit c987bc2a5e
11 changed files with 237 additions and 27 deletions
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100
mysql-test/r/bdb_cache.result Normal file
View File

@ -0,0 +1,100 @@
drop table if exists t1, t2, t3;
flush status;
set autocommit=0;
create table t1 (a int not null) type=bdb;
insert into t1 values (1),(2),(3);
select * from t1;
a
1
2
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
drop table t1;
commit;
set autocommit=1;
begin;
create table t1 (a int not null) type=bdb;
insert into t1 values (1),(2),(3);
select * from t1;
a
1
2
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
drop table t1;
commit;
create table t1 (a int not null) type=bdb;
create table t2 (a int not null) type=bdb;
create table t3 (a int not null) type=bdb;
insert into t1 values (1),(2);
insert into t2 values (1),(2);
insert into t3 values (1),(2);
select * from t1;
a
1
2
select * from t2;
a
1
2
select * from t3;
a
1
2
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 3
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
begin;
select * from t1;
a
1
2
select * from t2;
a
1
2
select * from t3;
a
1
2
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 3
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
insert into t1 values (3);
insert into t2 values (3);
insert into t1 values (4);
select * from t1;
a
1
2
3
4
select * from t2;
a
1
2
3
select * from t3;
a
1
2
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 3
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
commit;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1

6
mysql-test/r/innodb_cache.result
View File

@ -10,7 +10,7 @@ a
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
Qcache_queries_in_cache 1
drop table t1;
commit;
set autocommit=1;
@ -24,7 +24,7 @@ a
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
Qcache_queries_in_cache 1
drop table t1;
commit;
create table t1 (a int not null) type=innodb;
@ -97,4 +97,4 @@ Qcache_hits 0
commit;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
Qcache_queries_in_cache 3

1
mysql-test/t/bdb_cache-master.opt Normal file
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@ -0,0 +1 @@
--set-variable=query_cache_size=1M

50
mysql-test/t/bdb_cache.test Normal file
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@ -0,0 +1,50 @@
-- source include/have_bdb.inc
-- source include/have_query_cache.inc
#
# Without auto_commit.
#
drop table if exists t1, t2, t3;
flush status;
set autocommit=0;
create table t1 (a int not null) type=bdb;
insert into t1 values (1),(2),(3);
select * from t1;
show status like "Qcache_queries_in_cache";
drop table t1;
commit;
set autocommit=1;
begin;
create table t1 (a int not null) type=bdb;
insert into t1 values (1),(2),(3);
select * from t1;
show status like "Qcache_queries_in_cache";
drop table t1;
commit;
create table t1 (a int not null) type=bdb;
create table t2 (a int not null) type=bdb;
create table t3 (a int not null) type=bdb;
insert into t1 values (1),(2);
insert into t2 values (1),(2);
insert into t3 values (1),(2);
select * from t1;
select * from t2;
select * from t3;
show status like "Qcache_queries_in_cache";
show status like "Qcache_hits";
begin;
select * from t1;
select * from t2;
select * from t3;
show status like "Qcache_queries_in_cache";
show status like "Qcache_hits";
insert into t1 values (3);
insert into t2 values (3);
insert into t1 values (4);
select * from t1;
select * from t2;
select * from t3;
show status like "Qcache_queries_in_cache";
show status like "Qcache_hits";
commit;
show status like "Qcache_queries_in_cache";

1
sql/ha_berkeley.h
View File

@ -164,6 +164,7 @@ class ha_berkeley: public handler
}
longlong get_auto_increment();
void print_error(int error, myf errflag);
uint8 table_cache_type() { return HA_CACHE_TBL_TRANSACT; }
};
extern bool berkeley_skip, berkeley_shared_data;

2
sql/ha_innodb.cc
View File

@ -462,7 +462,7 @@ If thd is not in the autocommit state, this function also starts a new
transaction for thd if there is no active trx yet, and assigns a consistent
read view to it if there is no read view yet. */
my_bool
bool
innobase_query_caching_of_table_permitted(
/*======================================*/
/* out: TRUE if permitted, FALSE if not;

3
sql/ha_innodb.h
View File

@ -168,6 +168,7 @@ class ha_innobase: public handler
enum thr_lock_type lock_type);
void init_table_handle_for_HANDLER();
longlong get_auto_increment();
uint8 table_cache_type() { return HA_CACHE_TBL_ASKTRANSACT; }
};
extern bool innodb_skip;
@ -206,5 +207,5 @@ int innobase_close_connection(THD *thd);
int innobase_drop_database(char *path);
int innodb_show_status(THD* thd);
my_bool innobase_query_caching_of_table_permitted(THD* thd, char* full_name,
bool innobase_query_caching_of_table_permitted(THD* thd, char* full_name,
uint full_name_len);

11
sql/handler.cc
View File

@ -294,6 +294,7 @@ int ha_commit_trans(THD *thd, THD_TRANS* trans)
error=1;
}
else
if (!(thd->options & OPTION_BEGIN))
transaction_commited= 1;
trans->bdb_tid=0;
}
@ -838,6 +839,16 @@ int handler::delete_all_rows()
return (my_errno=HA_ERR_WRONG_COMMAND);
}
bool handler::caching_allowed(THD* thd, char* table_key,
uint key_length, uint8 cache_type)
{
if (cache_type == HA_CACHE_TBL_ASKTRANSACT)
return innobase_query_caching_of_table_permitted(thd, table_key,
key_length);
else
return 1;
}
/****************************************************************************
** Some general functions that isn't in the handler class
****************************************************************************/

15
sql/handler.h
View File

@ -116,6 +116,11 @@
#define HA_OPTION_NO_DELAY_KEY_WRITE (1L << 18)
#define HA_MAX_REC_LENGTH 65535
/* Table caching type */
#define HA_CACHE_TBL_NONTRANSACT 0
#define HA_CACHE_TBL_ASKTRANSACT 1
#define HA_CACHE_TBL_TRANSACT 2
enum db_type { DB_TYPE_UNKNOWN=0,DB_TYPE_DIAB_ISAM=1,
DB_TYPE_HASH,DB_TYPE_MISAM,DB_TYPE_PISAM,
DB_TYPE_RMS_ISAM, DB_TYPE_HEAP, DB_TYPE_ISAM,
@ -343,6 +348,16 @@ public:
virtual THR_LOCK_DATA **store_lock(THD *thd,
THR_LOCK_DATA **to,
enum thr_lock_type lock_type)=0;
/* Type of table for caching query */
virtual uint8 table_cache_type() { return HA_CACHE_TBL_NONTRANSACT; }
/*
Is query with this cable cachable (have sense only for ASKTRANSACT
tables)
*/
static bool caching_allowed(THD* thd, char* table_key,
uint key_length, uint8 cahe_type);
};
/* Some extern variables used with handlers */

45
sql/sql_cache.cc
View File

@ -757,8 +757,10 @@ void Query_cache::store_query(THD *thd, TABLE_LIST *tables_used)
if (query_cache_size == 0)
DBUG_VOID_RETURN;
uint8 tables_type= 0;
if ((tables = is_cacheable(thd, thd->query_length,
thd->query, &thd->lex, tables_used)))
thd->query, &thd->lex, tables_used,
&tables_type)))
{
NET *net = &thd->net;
byte flags = (thd->client_capabilities & CLIENT_LONG_FLAG ? 0x80 : 0);
@ -837,6 +839,7 @@ void Query_cache::store_query(THD *thd, TABLE_LIST *tables_used)
net->query_cache_query= (gptr) query_block;
header->writer(net);
header->tables_type(tables_type);
// init_n_lock make query block locked
BLOCK_UNLOCK_WR(query_block);
}
@ -884,6 +887,7 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length)
Query_cache_block_table *block_table, *block_table_end;
ulong tot_length;
byte flags;
bool check_tables;
DBUG_ENTER("Query_cache::send_result_to_client");
if (query_cache_size == 0 ||
@ -975,6 +979,7 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length)
}
DBUG_PRINT("qcache", ("Query have result 0x%lx", (ulong) query));
check_tables= query->tables_type() & HA_CACHE_TBL_ASKTRANSACT;
// Check access;
block_table= query_block->table(0);
block_table_end= block_table+query_block->n_tables;
@ -1005,6 +1010,16 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length)
thd->safe_to_cache_query=0; // Don't try to cache this
goto err_unlock; // Parse query
}
if (check_tables && !handler::caching_allowed(thd, table->db(),
table->key_length(),
table->type()))
{
DBUG_PRINT("qcache", ("Handler not allow caching for %s.%s",
table_list.db, table_list.alias));
BLOCK_UNLOCK_RD(query_block);
thd->safe_to_cache_query=0; // Don't try to cache this
goto err_unlock; // Parse query
}
}
move_to_query_list_end(query_block);
hits++;
@ -1062,7 +1077,8 @@ void Query_cache::invalidate(THD *thd, TABLE_LIST *tables_used,
{
DBUG_ASSERT(!using_transactions || tables_used->table!=0);
if (using_transactions &&
tables_used->table->file->has_transactions())
(tables_used->table->file->table_cache_type() ==
HA_CACHE_TBL_TRANSACT))
/*
Tables_used->table can't be 0 in transaction.
Only 'drop' invalidate not opened table, but 'drop'
@ -1116,7 +1132,8 @@ void Query_cache::invalidate(THD *thd, TABLE *table,
{
using_transactions = using_transactions &&
(thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN));
if (using_transactions && table->file->has_transactions())
if (using_transactions &&
(table->file->table_cache_type() == HA_CACHE_TBL_TRANSACT))
thd->add_changed_table(table);
else
invalidate_table(table);
@ -1925,7 +1942,8 @@ my_bool Query_cache::register_all_tables(Query_cache_block *block,
block_table->n=n;
if (!insert_table(tables_used->table->key_length,
tables_used->table->table_cache_key, block_table,
tables_used->db_length))
tables_used->db_length,
tables_used->table->file->table_cache_type()))
break;
if (tables_used->table->db_type == DB_TYPE_MRG_MYISAM)
@ -1938,11 +1956,12 @@ my_bool Query_cache::register_all_tables(Query_cache_block *block,
{
char key[MAX_DBKEY_LENGTH];
uint32 db_length;
uint key_length =filename_2_table_key(key, table->table->filename,
uint key_length= filename_2_table_key(key, table->table->filename,
&db_length);
(++block_table)->n= ++n;
if (!insert_table(key_length, key, block_table,
db_length))
db_length,
tables_used->table->file->table_cache_type()))
goto err;
}
}
@ -1969,7 +1988,7 @@ err:
my_bool
Query_cache::insert_table(uint key_len, char *key,
Query_cache_block_table *node,
uint32 db_length)
uint32 db_length, uint8 cache_type)
{
DBUG_ENTER("Query_cache::insert_table");
DBUG_PRINT("qcache", ("insert table node 0x%lx, len %d",
@ -2007,6 +2026,8 @@ Query_cache::insert_table(uint key_len, char *key,
}
char *db = header->db();
header->table(db + db_length + 1);
header->key_length(key_len);
header->type(cache_type);
}
Query_cache_block_table *list_root = table_block->table(0);
@ -2437,7 +2458,9 @@ void Query_cache::double_linked_list_join(Query_cache_block *head_tail,
TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
char *query,
LEX *lex, TABLE_LIST *tables_used)
LEX *lex,
TABLE_LIST *tables_used,
uint8 *tables_type)
{
TABLE_COUNTER_TYPE tables = 0;
DBUG_ENTER("Query_cache::is_cacheable");
@ -2448,7 +2471,6 @@ TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
OPTION_TO_QUERY_CACHE))) &&
thd->safe_to_cache_query)
{
my_bool has_transactions = 0;
DBUG_PRINT("qcache", ("options %lx %lx, type %u",
OPTION_TO_QUERY_CACHE,
lex->select->options,
@ -2460,8 +2482,7 @@ TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
DBUG_PRINT("qcache", ("table %s, db %s, type %u",
tables_used->real_name,
tables_used->db, tables_used->table->db_type));
has_transactions = (has_transactions ||
tables_used->table->file->has_transactions());
*tables_type|= tables_used->table->file->table_cache_type();
if (tables_used->table->db_type == DB_TYPE_MRG_ISAM ||
tables_used->table->tmp_table != NO_TMP_TABLE ||
@ -2485,7 +2506,7 @@ TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
}
if ((thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) &&
has_transactions)
((*tables_type)&HA_CACHE_TBL_TRANSACT))
{
DBUG_PRINT("qcache", ("not in autocommin mode"));
DBUG_RETURN(0);

26
sql/sql_cache.h
View File

@ -115,18 +115,21 @@ struct Query_cache_query
Query_cache_block *res;
NET *wri;
ulong len;
uint8 tbls_type;
inline void init_n_lock();
void unlock_n_destroy();
inline ulonglong found_rows() { return limit_found_rows; }
inline void found_rows(ulonglong rows) { limit_found_rows = rows; }
inline void found_rows(ulonglong rows) { limit_found_rows= rows; }
inline Query_cache_block *result() { return res; }
inline void result(Query_cache_block *p) { res=p; }
inline void result(Query_cache_block *p) { res= p; }
inline NET *writer() { return wri; }
inline void writer(NET *p) { wri=p; }
inline void writer(NET *p) { wri= p; }
inline uint8 tables_type() { return tbls_type; }
inline void tables_type(uint8 type) { tbls_type= type; }
inline ulong length() { return len; }
inline ulong add(ulong packet_len) { return(len += packet_len); }
inline void length(ulong length) { len = length; }
inline ulong add(ulong packet_len) { return(len+= packet_len); }
inline void length(ulong length) { len= length; }
inline gptr query()
{
return (gptr)(((byte*)this)+
@ -144,10 +147,16 @@ struct Query_cache_query
struct Query_cache_table
{
char *tbl;
uint key_len;
uint8 table_type;
inline char *db() { return (char *) data(); }
inline char *table() { return tbl; }
inline void table(char *table) { tbl = table; }
inline void table(char *table) { tbl= table; }
inline uint key_length() { return key_len; }
inline void key_length(uint len) { key_len= len; }
inline uint8 type() { return table_type; }
inline void type(uint8 t) { table_type= t; }
inline gptr data()
{
return (gptr)(((byte*)this)+
@ -276,7 +285,7 @@ protected:
TABLE_COUNTER_TYPE tables);
my_bool insert_table(uint key_len, char *key,
Query_cache_block_table *node,
uint32 db_length);
uint32 db_length, uint8 cache_type);
void unlink_table(Query_cache_block_table *node);
Query_cache_block *get_free_block (ulong len, my_bool not_less,
ulong min);
@ -334,7 +343,8 @@ protected:
(query without tables not cached)
*/
TABLE_COUNTER_TYPE is_cacheable(THD *thd, uint32 query_len, char *query,
LEX *lex, TABLE_LIST *tables_used);
LEX *lex, TABLE_LIST *tables_used,
uint8 *tables_type);
public:
Query_cache(ulong query_cache_limit = ULONG_MAX,