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Code Activity

CLIENT_MULTI_QUERIES -> CLIENT_MULTI_STATEMENTS

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New multi-key-cache handling. This was needed becasue the old one didn't work reliable with MERGE tables.
ALTER TABLE table_name ... CHARACTER SET  ... now changes all char/varchar/text columns to the given character set
(One must use ALTER TABLE ... DEFAULT CHARACTER SET ... to change the default character set)
Fixed that have_compress is detected properly (fixes problems with func_compress.test on platforms without zlib)
New syntax for CACHE INDEX ('keys' is optional if no index name is given and one mentions the key cache name only ones)
Removed compiler warnings
Added mysql_set_server_option() to allow clients like PHP to easaily set/reset the multi-statement flag.
This commit is contained in:
monty@mashka.mysql.fi
2003-11-18 13:47:27 +02:00
parent f277c9f88a
commit cab1dc628c
125 changed files with 1754 additions and 1216 deletions
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160
sql/sql_base.cc
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@@ -35,6 +35,7 @@ HASH assign_cache;
static int open_unireg_entry(THD *thd,TABLE *entry,const char *db,
const char *name, const char *alias);
static void free_cache_entry(TABLE *entry);
static void free_assign_entry(KEY_CACHE_ASMT *key_cache_asmt);
static void mysql_rm_tmp_tables(void);
@@ -142,7 +143,8 @@ OPEN_TABLE_LIST *list_open_tables(THD *thd, const char *wild)
OPEN_TABLE_LIST *table;
TABLE *entry=(TABLE*) hash_element(&open_cache,idx);
if ((!entry->real_name))
DBUG_ASSERT(entry->real_name);
if ((!entry->real_name)) // To be removed
continue; // Shouldn't happen
if (wild)
{
@@ -772,8 +774,6 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name,
reg1 TABLE *table;
char key[MAX_DBKEY_LENGTH];
uint key_length;
KEY_CACHE_ASMT *key_cache_asmt;
KEY_CACHE_VAR *key_cache;
DBUG_ENTER("open_table");
/* find a unused table in the open table cache */
@@ -816,76 +816,6 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name,
DBUG_RETURN(0);
}
VOID(pthread_mutex_lock(&LOCK_assign));
key_cache_asmt= (KEY_CACHE_ASMT*) hash_search(&assign_cache,
(byte*) key, key_length) ;
if (thd->open_options & HA_OPEN_TO_ASSIGN)
{
/* When executing a CACHE INDEX command*/
if (key_cache_asmt)
{
if (key_cache_asmt->requests++)
{
/* Another thread are assigning this table to some key cache*/
/* Put the assignment request into the queue of such requests */
struct st_my_thread_var *last;
struct st_my_thread_var *thread= thd->mysys_var;
if (! (last= key_cache_asmt->queue))
thread->next= thread;
else
{
thread->next= last->next;
last->next= thread;
}
key_cache_asmt->queue= thread;
/* Wait until the request can be processed */
do
{
VOID(pthread_cond_wait(&thread->suspend, &LOCK_assign));
}
while (thread->next);
}
}
else
{
/*
The table has not been explicitly assigned to any key cache yet;
by default it's assigned to the default key cache;
*/
if (!(key_cache_asmt=
(KEY_CACHE_ASMT *) my_malloc(sizeof(*key_cache_asmt),
MYF(MY_WME | MY_ZEROFILL))) ||
!(key_cache_asmt->db_name= my_strdup(db, MYF(MY_WME))) ||
!(key_cache_asmt->table_name= my_strdup(table_name, MYF(MY_WME))) ||
!(key_cache_asmt->table_key= my_memdup((const byte *) key,
key_length, MYF(MY_WME))))
{
VOID(pthread_mutex_unlock(&LOCK_assign));
if (key_cache_asmt)
{
if (key_cache_asmt->db_name)
my_free((gptr) key_cache_asmt->db_name, MYF(0));
if (key_cache_asmt->table_name)
my_free((gptr) key_cache_asmt->table_name, MYF(0));
my_free((gptr) key_cache_asmt, MYF(0));
}
DBUG_RETURN(NULL);
}
key_cache_asmt->key_length= key_length;
key_cache_asmt->key_cache= &dflt_key_cache_var;
VOID(my_hash_insert(&assign_cache, (byte *) key_cache_asmt));
key_cache_asmt->requests++;
}
key_cache_asmt->to_reassign= 0;
}
key_cache= key_cache_asmt ? key_cache_asmt->key_cache : &dflt_key_cache_var;
VOID(pthread_mutex_unlock(&LOCK_assign));
VOID(pthread_mutex_lock(&LOCK_open));
if (!thd->open_tables)
@@ -929,8 +859,6 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name,
table->prev->next=table->next; /* Remove from unused list */
table->next->prev=table->prev;
table->key_cache= key_cache;
table->key_cache_asmt= key_cache_asmt;
}
else
{
@@ -944,8 +872,6 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name,
VOID(pthread_mutex_unlock(&LOCK_open));
DBUG_RETURN(NULL);
}
table->key_cache= key_cache;
table->key_cache_asmt= key_cache_asmt;
if (open_unireg_entry(thd, table,db,table_name,alias) ||
!(table->table_cache_key=memdup_root(&table->mem_root,(char*) key,
key_length)))
@@ -963,8 +889,7 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name,
}
table->in_use=thd;
check_unused();
check_unused(); // Debugging call
VOID(pthread_mutex_unlock(&LOCK_open));
if (refresh)
@@ -1071,8 +996,8 @@ bool reopen_table(TABLE *table,bool locked)
tmp.grant= table->grant;
/* Replace table in open list */
tmp.next=table->next;
tmp.prev=table->prev;
tmp.next= table->next;
tmp.prev= table->prev;
if (table->file)
VOID(closefrm(table)); // close file, free everything
@@ -1740,54 +1665,6 @@ bool rm_temporary_table(enum db_type base, char *path)
DBUG_RETURN(error);
}
static void free_assign_entry(KEY_CACHE_ASMT *key_cache_asmt)
{
DBUG_ENTER("free_assign_entry");
my_free((gptr) key_cache_asmt->table_key, MYF(0));
my_free((gptr) key_cache_asmt, MYF(0));
DBUG_VOID_RETURN;
}
static byte *assign_cache_key(const byte *record,uint *length,
my_bool not_used __attribute__((unused)))
{
KEY_CACHE_ASMT *entry=(KEY_CACHE_ASMT *) record;
*length=entry->key_length;
return (byte*) entry->table_key;
}
void assign_cache_init(void)
{
VOID(hash_init(&assign_cache, &my_charset_bin,
table_cache_size+16, 0, 0, assign_cache_key,
(hash_free_key) free_assign_entry,0));
}
void assign_cache_free(void)
{
DBUG_ENTER("assign_cache_free");
hash_free(&assign_cache);
DBUG_VOID_RETURN;
}
void reassign_key_cache(KEY_CACHE_ASMT *key_cache_asmt,
KEY_CACHE_VAR *new_key_cache)
{
if (key_cache_asmt->prev)
{
/* Unlink key_cache_asmt from the assignment list for the old key cache */
if ((*key_cache_asmt->prev= key_cache_asmt->next))
key_cache_asmt->next->prev= key_cache_asmt->prev;
}
/* Link key_cache_asmt into the assignment list for the new key cache */
key_cache_asmt->prev= &new_key_cache->assign_list;
if ((key_cache_asmt->next= new_key_cache->assign_list))
key_cache_asmt->next->prev= &key_cache_asmt->next;
new_key_cache->assign_list= key_cache_asmt;
key_cache_asmt->key_cache= new_key_cache;
}
/*****************************************************************************
** find field in list or tables. if field is unqualifed and unique,
@@ -2215,7 +2092,21 @@ bool setup_tables(TABLE_LIST *tables)
}
void get_key_map_from_key_list(key_map *map, TABLE *table,
/*
Create a key_map from a list of index names
SYNOPSIS
get_key_map_from_key_list()
map key_map to fill in
table Table
index_list List of index names
RETURN
0 ok; In this case *map will includes the choosed index
1 error
*/
bool get_key_map_from_key_list(key_map *map, TABLE *table,
List<String> *index_list)
{
List_iterator_fast<String> it(*index_list);
@@ -2231,13 +2122,14 @@ void get_key_map_from_key_list(key_map *map, TABLE *table,
my_error(ER_KEY_COLUMN_DOES_NOT_EXITS, MYF(0), name->c_ptr(),
table->real_name);
map->set_all();
return;
return 1;
}
map->set_bit(pos-1);
}
return;
return 0;
}
/****************************************************************************
This just drops in all fields instead of current '*' field
Returns pointer to last inserted field if ok
@@ -2488,7 +2380,7 @@ int mysql_create_index(THD *thd, TABLE_LIST *table_list, List<Key> &keys)
DBUG_ENTER("mysql_create_index");
bzero((char*) &create_info,sizeof(create_info));
create_info.db_type=DB_TYPE_DEFAULT;
create_info.table_charset= thd->variables.collation_database;
create_info.default_table_charset= thd->variables.collation_database;
DBUG_RETURN(mysql_alter_table(thd,table_list->db,table_list->real_name,
&create_info, table_list,
fields, keys, drop, alter, 0, (ORDER*)0, FALSE,
@@ -2505,7 +2397,7 @@ int mysql_drop_index(THD *thd, TABLE_LIST *table_list, List<Alter_drop> &drop)
DBUG_ENTER("mysql_drop_index");
bzero((char*) &create_info,sizeof(create_info));
create_info.db_type=DB_TYPE_DEFAULT;
create_info.table_charset= thd->variables.collation_database;
create_info.default_table_charset= thd->variables.collation_database;
DBUG_RETURN(mysql_alter_table(thd,table_list->db,table_list->real_name,
&create_info, table_list,
fields, keys, drop, alter, 0, (ORDER*)0, FALSE,