1berry/MariaDB-server
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge

Browse Source
This commit is contained in:
tomas@poseidon.ndb.mysql.com 2004-11-24 12:04:17 +00:00
commit b53e083827
10 changed files with 232 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sql/ha_innodb.cc
View File

@ -655,8 +655,9 @@ innobase_query_caching_of_table_permitted(
char* full_name, /* in: concatenation of database name,
the null character '\0', and the table
name */
uint full_name_len) /* in: length of the full name, i.e.
uint full_name_len, /* in: length of the full name, i.e.
len(dbname) + len(tablename) + 1 */
ulonglong *unused) /* unused for this engine */
{
ibool is_autocommit;
trx_t* trx;

20
sql/ha_innodb.h
View File

@ -33,6 +33,10 @@ typedef struct st_innobase_share {
} INNOBASE_SHARE;
my_bool innobase_query_caching_of_table_permitted(THD* thd, char* full_name,
uint full_name_len,
ulonglong *unused);
/* The class defining a handle to an Innodb table */
class ha_innobase: public handler
{
@ -168,6 +172,20 @@ class ha_innobase: public handler
void init_table_handle_for_HANDLER();
longlong get_auto_increment();
uint8 table_cache_type() { return HA_CACHE_TBL_ASKTRANSACT; }
/*
ask handler about permission to cache table during query registration
*/
my_bool cached_table_registration(THD *thd, char *table_key,
uint key_length,
qc_engine_callback *call_back,
ulonglong *engine_data)
{
*call_back= innobase_query_caching_of_table_permitted;
*engine_data= 0;
return innobase_query_caching_of_table_permitted(thd, table_key,
key_length,
engine_data);
}
static char *get_mysql_bin_log_name();
static ulonglong get_mysql_bin_log_pos();
@ -233,8 +251,6 @@ 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,
uint full_name_len);
void innobase_release_temporary_latches(void* innobase_tid);
void innobase_store_binlog_offset_and_flush_log(char *binlog_name,longlong offset);

134
sql/ha_ndbcluster.cc
View File

@ -4457,19 +4457,145 @@ const char* ha_ndbcluster::index_type(uint key_number)
}
uint8 ha_ndbcluster::table_cache_type()
{
DBUG_ENTER("ha_ndbcluster::table_cache_type");
switch (m_query_cache_type)
{
case 0:
return HA_CACHE_TBL_NOCACHE;
DBUG_PRINT("exit",("HA_CACHE_TBL_NOCACHE"));
DBUG_RETURN(HA_CACHE_TBL_NOCACHE);
case 1:
return HA_CACHE_TBL_ASKTRANSACT;
DBUG_PRINT("exit",("HA_CACHE_TBL_ASKTRANSACT"));
DBUG_RETURN(HA_CACHE_TBL_ASKTRANSACT);
case 2:
return HA_CACHE_TBL_TRANSACT;
DBUG_PRINT("exit",("HA_CACHE_TBL_TRANSACT"));
DBUG_RETURN(HA_CACHE_TBL_TRANSACT);
default:
return HA_CACHE_TBL_NOCACHE;
DBUG_PRINT("exit",("HA_CACHE_TBL_NOCACHE"));
DBUG_RETURN(HA_CACHE_TBL_NOCACHE);
}
}
static
my_bool
ndbcluster_cache_retrieval_allowed(
/*======================================*/
/* out: TRUE if permitted, FALSE if not;
note that the value FALSE means invalidation
of query cache if *engine_data is changed */
THD* thd, /* in: thd of the user who is trying to
store a result to the query cache or
retrieve it */
char* full_name, /* in: concatenation of database name,
the null character '\0', and the table
name */
uint full_name_len, /* in: length of the full name, i.e.
len(dbname) + len(tablename) + 1 */
ulonglong *engine_data) /* in: value set in call to
ha_ndbcluster::cached_table_registration
out: if return FALSE this is used to invalidate
all cached queries with this table*/
{
DBUG_ENTER("ndbcluster_cache_retrieval_allowed");
char tabname[128];
char *dbname= full_name;
my_bool is_autocommit;
{
int dbname_len= strlen(full_name);
int tabname_len= full_name_len-dbname_len-1;
memcpy(tabname, full_name+dbname_len+1, tabname_len);
tabname[tabname_len]= '\0';
}
if (thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))
is_autocommit = FALSE;
else
is_autocommit = TRUE;
DBUG_PRINT("enter",("dbname=%s, tabname=%s, autocommit=%d",
dbname,tabname,is_autocommit));
if (!is_autocommit)
{
DBUG_PRINT("info",("OPTION_NOT_AUTOCOMMIT=%d OPTION_BEGIN=%d",
thd->options & OPTION_NOT_AUTOCOMMIT,
thd->options & OPTION_BEGIN));
// ToDo enable cache inside a transaction
// no need to invalidate though so leave *engine_data
DBUG_RETURN(FALSE);
}
{
Ndb *ndb;
Uint64 commit_count;
if (!(ndb= check_ndb_in_thd(thd)))
{
*engine_data= *engine_data+1; // invalidate
DBUG_RETURN(FALSE);
}
ndb->setDatabaseName(dbname);
if (ndb_get_table_statistics(ndb, tabname, 0, &commit_count))
{
*engine_data= *engine_data+1; // invalidate
DBUG_RETURN(FALSE);
}
if (*engine_data != commit_count)
{
*engine_data= commit_count; // invalidate
DBUG_RETURN(FALSE);
}
}
DBUG_PRINT("exit",("*engine_data=%d ok, use cache",*engine_data));
DBUG_RETURN(TRUE);
}
my_bool
ha_ndbcluster::cached_table_registration(
/*======================================*/
/* out: TRUE if permitted, FALSE if not;
note that the value FALSE means invalidation
of query cache if *engine_data is changed */
THD* thd, /* in: thd of the user who is trying to
store a result to the query cache or
retrieve it */
char* full_name, /* in: concatenation of database name,
the null character '\0', and the table
name */
uint full_name_len, /* in: length of the full name, i.e.
len(dbname) + len(tablename) + 1 */
qc_engine_callback
*engine_callback, /* out: function to be called before using
cache on this table */
ulonglong *engine_data) /* out: if return FALSE this is used to
invalidate all cached queries with this table*/
{
DBUG_ENTER("ha_ndbcluster::cached_table_registration");
my_bool is_autocommit;
if (thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))
is_autocommit = FALSE;
else
is_autocommit = TRUE;
DBUG_PRINT("enter",("dbname=%s, tabname=%s, is_autocommit=%d",
m_dbname,m_tabname,is_autocommit));
if (!is_autocommit)
{
DBUG_PRINT("info",("OPTION_NOT_AUTOCOMMIT=%d OPTION_BEGIN=%d",
thd->options & OPTION_NOT_AUTOCOMMIT,
thd->options & OPTION_BEGIN));
// ToDo enable cache inside a transaction
// no need to invalidate though so leave *engine_data
DBUG_RETURN(FALSE);
}
{
Uint64 commit_count;
m_ndb->setDatabaseName(m_dbname);
if (ndb_get_table_statistics(m_ndb, m_tabname, 0, &commit_count))
{
*engine_data= 0;
DBUG_RETURN(FALSE);
}
*engine_data= commit_count;
}
*engine_callback= ndbcluster_cache_retrieval_allowed;
DBUG_PRINT("exit",("*engine_data=%d", *engine_data));
DBUG_RETURN(TRUE);
}
/*
Handling the shared NDB_SHARE structure that is needed to
provide table locking.

5
sql/ha_ndbcluster.h
View File

@ -146,7 +146,10 @@ class ha_ndbcluster: public handler
static Thd_ndb* seize_thd_ndb();
static void release_thd_ndb(Thd_ndb* thd_ndb);
uint8 table_cache_type();
my_bool cached_table_registration(THD *thd, char *table_key,
uint key_length,
qc_engine_callback *engine_callback,
ulonglong *engine_data);
private:
int alter_table_name(const char *from, const char *to);
int drop_table();

9
sql/handler.cc
View File

@ -229,15 +229,6 @@ handler *get_new_handler(TABLE *table, enum db_type db_type)
}
}
bool ha_caching_allowed(THD* thd, char* table_key,
uint key_length, uint8 cache_type)
{
#ifdef HAVE_INNOBASE_DB
if (cache_type == HA_CACHE_TBL_ASKTRANSACT)
return innobase_query_caching_of_table_permitted(thd, table_key, key_length);
#endif
return 1;
}
int ha_init()
{

15
sql/handler.h
View File

@ -506,10 +506,15 @@ public:
/* Type of table for caching query */
virtual uint8 table_cache_type() { return HA_CACHE_TBL_NONTRANSACT; }
/*
Is query with this table cachable (have sense only for ASKTRANSACT
tables)
*/
/* ask handler about permission to cache table during query registration */
virtual my_bool cached_table_registration(THD *thd, char *table_key,
uint key_length,
qc_engine_callback *engine_callback,
ulonglong *engine_data)
{
*engine_callback= 0;
return 1;
}
};
/* Some extern variables used with handlers */
@ -528,8 +533,6 @@ extern TYPELIB tx_isolation_typelib;
T != DB_TYPE_BERKELEY_DB && \
T != DB_TYPE_NDBCLUSTER)
bool ha_caching_allowed(THD* thd, char* table_key,
uint key_length, uint8 cache_type);
enum db_type ha_resolve_by_name(const char *name, uint namelen);
const char *ha_get_storage_engine(enum db_type db_type);
handler *get_new_handler(TABLE *table, enum db_type db_type);

3
sql/mysql_priv.h
View File

@ -340,6 +340,9 @@ inline THD *_current_thd(void)
}
#define current_thd _current_thd()
typedef my_bool (*qc_engine_callback)(THD *thd, char *table_key,
uint key_length,
ulonglong *engine_data);
#include "sql_string.h"
#include "sql_list.h"
#include "sql_map.h"

64
sql/sql_cache.cc
View File

@ -918,12 +918,12 @@ end:
int
Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length)
{
ulonglong engine_data;
Query_cache_query *query;
Query_cache_block *first_result_block, *result_block;
Query_cache_block_table *block_table, *block_table_end;
ulong tot_length;
Query_cache_query_flags flags;
bool check_tables;
DBUG_ENTER("Query_cache::send_result_to_client");
if (query_cache_size == 0 || thd->variables.query_cache_type == 0)
@ -1024,7 +1024,6 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length)
goto err_unlock;
}
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;
@ -1085,19 +1084,29 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length)
goto err_unlock; // Parse query
}
#endif /*!NO_EMBEDDED_ACCESS_CHECKS*/
if (check_tables && !ha_caching_allowed(thd, table->db(),
table->key_length(),
table->type()))
engine_data= table->engine_data();
if (table->callback() &&
!(*table->callback())(thd, table->db(),
table->key_length(),
&engine_data))
{
DBUG_PRINT("qcache", ("Handler does not allow caching for %s.%s",
table_list.db, table_list.alias));
BLOCK_UNLOCK_RD(query_block);
thd->lex->safe_to_cache_query= 0; // Don't try to cache this
if (engine_data != table->engine_data())
{
DBUG_PRINT("qcache",
("Handler require invalidation queries of %s.%s %lld-%lld",
table_list.db, table_list.alias,
engine_data, table->engine_data()));
invalidate_table(table->db(), table->key_length());
}
goto err_unlock; // Parse query
}
else
DBUG_PRINT("qcache", ("handler allow caching (%d) %s,%s",
check_tables, table_list.db, table_list.alias));
DBUG_PRINT("qcache", ("handler allow caching %s,%s",
table_list.db, table_list.alias));
}
move_to_query_list_end(query_block);
hits++;
@ -2122,7 +2131,9 @@ my_bool Query_cache::register_all_tables(Query_cache_block *block,
if (!insert_table(tables_used->table->key_length,
tables_used->table->table_cache_key, block_table,
tables_used->db_length,
tables_used->table->file->table_cache_type()))
tables_used->table->file->table_cache_type(),
tables_used->callback_func,
tables_used->engine_data))
break;
if (tables_used->table->db_type == DB_TYPE_MRG_MYISAM)
@ -2138,9 +2149,13 @@ my_bool Query_cache::register_all_tables(Query_cache_block *block,
uint key_length= filename_2_table_key(key, table->table->filename,
&db_length);
(++block_table)->n= ++n;
/*
There are not callback function for for MyISAM, and engine data
*/
if (!insert_table(key_length, key, block_table,
db_length,
tables_used->table->file->table_cache_type()))
tables_used->table->file->table_cache_type(),
0, 0))
goto err;
}
}
@ -2167,7 +2182,9 @@ err:
my_bool
Query_cache::insert_table(uint key_len, char *key,
Query_cache_block_table *node,
uint32 db_length, uint8 cache_type)
uint32 db_length, uint8 cache_type,
qc_engine_callback callback,
ulonglong engine_data)
{
DBUG_ENTER("Query_cache::insert_table");
DBUG_PRINT("qcache", ("insert table node 0x%lx, len %d",
@ -2177,6 +2194,23 @@ Query_cache::insert_table(uint key_len, char *key,
hash_search(&tables, (byte*) key,
key_len));
if (table_block &&
table_block->table()->engine_data() != engine_data)
{
DBUG_PRINT("qcache",
("Handler require invalidation queries of %s.%s %lld-%lld",
table_block->table()->db(),
table_block->table()->table(),
engine_data,
table_block->table()->engine_data()));
/*
as far as we delete all queries with this table, table block will be
deleted, too
*/
invalidate_table(table_block);
table_block= 0;
}
if (table_block == 0)
{
DBUG_PRINT("qcache", ("new table block from 0x%lx (%u)",
@ -2207,6 +2241,8 @@ Query_cache::insert_table(uint key_len, char *key,
header->table(db + db_length + 1);
header->key_length(key_len);
header->type(cache_type);
header->callback(callback);
header->engine_data(engine_data);
}
Query_cache_block_table *list_root = table_block->table(0);
@ -2727,9 +2763,11 @@ my_bool Query_cache::ask_handler_allowance(THD *thd,
for (; tables_used; tables_used= tables_used->next)
{
TABLE *table= tables_used->table;
if (!ha_caching_allowed(thd, table->table_cache_key,
table->key_length,
table->file->table_cache_type()))
handler *handler= table->file;
if (!handler->cached_table_registration(thd, table->table_cache_key,
table->key_length,
&tables_used->callback_func,
&tables_used->engine_data))
{
DBUG_PRINT("qcache", ("Handler does not allow caching for %s.%s",
tables_used->db, tables_used->alias));

12
sql/sql_cache.h
View File

@ -145,6 +145,10 @@ struct Query_cache_table
char *tbl;
uint32 key_len;
uint8 table_type;
/* unique for every engine reference */
qc_engine_callback callback_func;
/* data need by some engines */
ulonglong engine_data_buff;
inline char *db() { return (char *) data(); }
inline char *table() { return tbl; }
@ -153,6 +157,10 @@ struct Query_cache_table
inline void key_length(uint32 len) { key_len= len; }
inline uint8 type() { return table_type; }
inline void type(uint8 t) { table_type= t; }
inline qc_engine_callback callback() { return callback_func; }
inline void callback(qc_engine_callback fn){ callback_func= fn; }
inline ulonglong engine_data() { return engine_data_buff; }
inline void engine_data(ulonglong data) { engine_data_buff= data; }
inline gptr data()
{
return (gptr)(((byte*)this)+
@ -281,7 +289,9 @@ protected:
TABLE_COUNTER_TYPE tables);
my_bool insert_table(uint key_len, char *key,
Query_cache_block_table *node,
uint32 db_length, uint8 cache_type);
uint32 db_length, uint8 cache_type,
qc_engine_callback callback,
ulonglong engine_data);
void unlink_table(Query_cache_block_table *node);
Query_cache_block *get_free_block (ulong len, my_bool not_less,
ulong min);

4
sql/table.h
View File

@ -207,6 +207,10 @@ typedef struct st_table_list
TABLE *table; /* opened table */
st_table_list *table_list; /* pointer to node of list of all tables */
class st_select_lex_unit *derived; /* SELECT_LEX_UNIT of derived table */
/* data need by some engines in query cache*/
ulonglong engine_data;
/* call back function for asking handler about caching in query cache */
qc_engine_callback callback_func;
GRANT_INFO grant;
thr_lock_type lock_type;
uint outer_join; /* Which join type */