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processing trunsactional tables in query cache

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mysql-test/r/innodb_cache.result:
  new test for query cache with transactions
mysql-test/t/innodb_cache.test:
  new test for query cache with transactions
sql/sql_cache.cc:
  processing trunsactional tables in query cache & removing strlen
sql/sql_class.cc:
  processing trunsactional tables in query cache & added transaction-live memory
sql/sql_class.h:
  processing trunsactional tables in query cache & added transaction-live memory
sql/sql_parse.cc:
  processing trunsactional tables in query cache & added transaction-live memory
sql/table.h:
  removing strlen operation from query cache
This commit is contained in:
unknown
2002-03-15 23:57:31 +02:00
parent 75a268a65b
commit 0510e98e11
14 changed files with 405 additions and 134 deletions
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87
sql/sql_class.cc
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@@ -34,6 +34,8 @@
#ifdef __WIN__
#include <io.h>
#endif
#include <mysys_err.h>
#include <assert.h>
/*****************************************************************************
** Instansiate templates
@@ -105,6 +107,7 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
net.vio=0;
ull=0;
system_thread=cleanup_done=0;
transaction.changed_tables = 0;
#ifdef __WIN__
real_id = 0;
#endif
@@ -136,6 +139,7 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
/* Initialize sub structures */
bzero((char*) &mem_root,sizeof(mem_root));
bzero((char*) &transaction.mem_root,sizeof(transaction.mem_root));
user_connect=(UC *)0;
hash_init(&user_vars, USER_VARS_HASH_SIZE, 0, 0,
(hash_get_key) get_var_key,
@@ -211,6 +215,7 @@ THD::~THD()
safeFree(db);
safeFree(ip);
free_root(&mem_root,MYF(0));
free_root(&transaction.mem_root,MYF(0));
mysys_var=0; // Safety (shouldn't be needed)
#ifdef SIGNAL_WITH_VIO_CLOSE
pthread_mutex_destroy(&active_vio_lock);
@@ -255,6 +260,88 @@ bool THD::store_globals()
my_pthread_setspecific_ptr(THR_NET, &net));
}
/* routings to adding tables to list of changed in transaction tables */
inline static void list_include(CHANGED_TABLE_LIST** prev,
CHANGED_TABLE_LIST* curr,
CHANGED_TABLE_LIST* new_table)
{
if (new_table)
{
*prev = new_table;
(*prev)->next = curr;
}
}
/* add table to list of changed in transaction tables */
void THD::add_changed_table(TABLE *table)
{
DBUG_ENTER("THD::add_changed_table (table)");
DBUG_ASSERT((options & (OPTION_NOT_AUTO_COMMIT | OPTION_BEGIN)) &&
table->file->has_transactions());
CHANGED_TABLE_LIST** prev = &transaction.changed_tables;
CHANGED_TABLE_LIST* curr = transaction.changed_tables;
for(; curr; prev = &(curr->next), curr = curr->next)
{
int cmp = (long)curr->key_length - (long)table->key_length;
if (cmp < 0)
{
list_include(prev, curr, changed_table_dup(table));
DBUG_PRINT("info",
("key_length %u %u", table->key_length, (*prev)->key_length));
DBUG_VOID_RETURN;
}
else if (cmp == 0)
{
cmp = memcmp(curr->key ,table->table_cache_key, curr->key_length);
if (cmp < 0)
{
list_include(prev, curr, changed_table_dup(table));
DBUG_PRINT("info",
("key_length %u %u", table->key_length, (*prev)->key_length));
DBUG_VOID_RETURN;
}
else if (cmp == 0)
{
DBUG_PRINT("info", ("already in list"));
DBUG_VOID_RETURN;
}
}
}
*prev = changed_table_dup(table);
DBUG_PRINT("info", ("key_length %u %u", table->key_length, (*prev)->key_length));
DBUG_VOID_RETURN;
}
CHANGED_TABLE_LIST* THD::changed_table_dup(TABLE *table)
{
CHANGED_TABLE_LIST* new_table =
(CHANGED_TABLE_LIST*) trans_alloc(ALIGN_SIZE(sizeof(CHANGED_TABLE_LIST))+
table->key_length + 1);
if (!new_table)
{
my_error(EE_OUTOFMEMORY, MYF(ME_BELL),
ALIGN_SIZE(sizeof(TABLE_LIST)) + table->key_length + 1);
killed= 1;
return 0;
}
new_table->key = (char *) (((byte*)new_table)+
ALIGN_SIZE(sizeof(CHANGED_TABLE_LIST)));
new_table->next = 0;
new_table->key_length = table->key_length;
uint32 db_len = ((new_table->table_name =
::strmake(new_table->key, table->table_cache_key,
table->key_length) + 1) - new_table->key);
::memcpy(new_table->key + db_len, table->table_cache_key + db_len,
table->key_length - db_len);
return new_table;
}
/*****************************************************************************
** Functions to provide a interface to select results
*****************************************************************************/