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WL#3823 Modify VARIABLE_VALUE columns to VARCHAR within INFORMATION_SCHEMA STATUS tables

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This commit is contained in:
gluh@mysql.com/eagle.(none)
2007-05-15 12:45:50 +05:00
parent 353eac9557
commit 579cce54ab
7 changed files with 60 additions and 219 deletions
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248
sql/sql_show.cc
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@ -4516,9 +4516,19 @@ int fill_variables(THD *thd, TABLE_LIST *tables, COND *cond)
int res= 0;
LEX *lex= thd->lex;
const char *wild= lex->wild ? lex->wild->ptr() : NullS;
enum enum_schema_tables schema_table_idx=
get_schema_table_idx(tables->schema_table);
enum enum_var_type option_type= OPT_SESSION;
bool upper_case_names= (schema_table_idx != SCH_VARIABLES);
bool sorted_vars= (schema_table_idx == SCH_VARIABLES);
if (lex->option_type == OPT_GLOBAL ||
schema_table_idx == SCH_GLOBAL_VARIABLES)
option_type= OPT_GLOBAL;
rw_rdlock(&LOCK_system_variables_hash);
res= show_status_array(thd, wild, enumerate_sys_vars(thd, TRUE),
lex->option_type, 0, "", tables->table, 0);
res= show_status_array(thd, wild, enumerate_sys_vars(thd, sorted_vars),
option_type, NULL, "", tables->table, upper_case_names);
rw_unlock(&LOCK_system_variables_hash);
DBUG_RETURN(res);
}
@ -4530,16 +4540,34 @@ int fill_status(THD *thd, TABLE_LIST *tables, COND *cond)
LEX *lex= thd->lex;
const char *wild= lex->wild ? lex->wild->ptr() : NullS;
int res= 0;
STATUS_VAR tmp;
STATUS_VAR *tmp1, tmp;
enum enum_schema_tables schema_table_idx=
get_schema_table_idx(tables->schema_table);
enum enum_var_type option_type;
bool upper_case_names= (schema_table_idx != SCH_STATUS);
if (lex->option_type == OPT_GLOBAL ||
schema_table_idx == SCH_GLOBAL_STATUS)
{
option_type= OPT_GLOBAL;
tmp1= &tmp;
}
else
{
option_type= OPT_SESSION;
if (schema_table_idx == SCH_SESSION_STATUS)
tmp1= &thd->status_var;
else
tmp1= thd->initial_status_var;
}
pthread_mutex_lock(&LOCK_status);
if (lex->option_type == OPT_GLOBAL)
if (option_type == OPT_GLOBAL)
calc_sum_of_all_status(&tmp);
res= show_status_array(thd, wild,
(SHOW_VAR *)all_status_vars.buffer,
OPT_GLOBAL,
(lex->option_type == OPT_GLOBAL ?
&tmp: thd->initial_status_var),
"", tables->table, 0);
option_type, tmp1, "", tables->table,
upper_case_names);
pthread_mutex_unlock(&LOCK_status);
DBUG_RETURN(res);
}
@ -4782,12 +4810,10 @@ TABLE *create_schema_table(THD *thd, TABLE_LIST *table_list)
/* Don't let unimplemented types pass through. Could be a grave error. */
DBUG_ASSERT(fields_info->field_type == MYSQL_TYPE_STRING);
/* this should be changed when Item_empty_string is fixed(in 4.1) */
if (!(item= new Item_empty_string("", 0, cs)))
if (!(item= new Item_empty_string("", fields_info->field_length, cs)))
{
DBUG_RETURN(0);
}
item->max_length= fields_info->field_length * cs->mbmaxlen;
item->set_name(fields_info->field_name,
strlen(fields_info->field_name), cs);
break;
@ -5228,172 +5254,6 @@ int fill_schema_files(THD *thd, TABLE_LIST *tables, COND *cond)
DBUG_RETURN(0);
}
int fill_schema_status(THD *thd, SHOW_VAR *variables,
struct system_status_var *status_var,
const char *prefix, TABLE *table)
{
SHOW_VAR tmp, *var;
SHOW_TYPE show_type;
LEX_STRING null_lex_str;
char buff[SHOW_VAR_FUNC_BUFF_SIZE];
char name_buf[64], *name_pos;
int name_len;
DBUG_ENTER("fill_schema_status");
null_lex_str.str= 0;
null_lex_str.length= 0;
name_pos= strnmov(name_buf, prefix, sizeof(name_buf) - 1);
if (*prefix)
*name_pos++= '_';
name_len= name_buf + sizeof(name_buf) - name_pos;
for (; variables->name; variables++)
{
strnmov(name_pos, variables->name, name_len);
name_buf[sizeof(name_buf) - 1]= 0;
make_upper(name_buf);
for (var= variables; var->type == SHOW_FUNC; var= &tmp)
((mysql_show_var_func)(var->value))(thd, &tmp, buff);
show_type= var->type;
if (show_type == SHOW_ARRAY)
{
fill_schema_status(thd, (SHOW_VAR*) var->value,
status_var, name_buf, table);
}
else
{
char *value= var->value;
restore_record(table, s->default_values);
table->field[0]->store(name_buf, strlen(name_buf), system_charset_info);
if (show_type == SHOW_SYS)
{
show_type= ((sys_var*) value)->show_type();
value= (char*) ((sys_var*) value)->value_ptr(thd, OPT_GLOBAL,
&null_lex_str);
}
switch (show_type)
{
case SHOW_DOUBLE_STATUS:
value= (char*) status_var + (ulong) value;
table->field[1]->store(*(double*) value);
break;
case SHOW_LONG_STATUS:
value= (char*) status_var + (ulong) value;
/* fall through */
case SHOW_LONG:
case SHOW_LONG_NOFLUSH: /* the difference lies in refresh_status() */
table->field[1]->store((longlong) *(long*) value, false);
break;
case SHOW_LONGLONG:
table->field[1]->store(*(longlong*) value, false);
break;
case SHOW_HA_ROWS:
table->field[1]->store((longlong) *(ha_rows*) value, false);
break;
case SHOW_BOOL:
table->field[1]->store((longlong) *(bool*) value, false);
break;
case SHOW_MY_BOOL:
table->field[1]->store((longlong) *(my_bool*) value, false);
break;
case SHOW_INT:
table->field[1]->store((longlong) *(uint32*) value, false);
break;
case SHOW_HAVE: /* always displayed as 0 */
table->field[1]->store((longlong) 0, false);
break;
case SHOW_CHAR_PTR:
value= *(char**) value;
/* fall through */
case SHOW_CHAR: /* always displayed as 0 */
table->field[1]->store((longlong) 0, false);
break;
case SHOW_KEY_CACHE_LONG:
value= (char*) dflt_key_cache + (ulong) value;
table->field[1]->store((longlong) *(long*) value, false);
break;
case SHOW_KEY_CACHE_LONGLONG:
value= (char*) dflt_key_cache + (ulong) value;
table->field[1]->store(*(longlong*) value, false);
break;
case SHOW_UNDEF: /* always displayed as 0 */
table->field[1]->store((longlong) 0, false);
break;
case SHOW_SYS: /* cannot happen */
default:
DBUG_ASSERT(0);
break;
}
table->field[1]->set_notnull();
if (schema_table_store_record(thd, table))
DBUG_RETURN(1);
}
}
DBUG_RETURN(0);
}
int fill_schema_global_status(THD *thd, TABLE_LIST *tables, COND *cond)
{
STATUS_VAR tmp;
int res= 0;
DBUG_ENTER("fill_schema_global_status");
pthread_mutex_lock(&LOCK_status);
calc_sum_of_all_status(&tmp);
res= fill_schema_status(thd, (SHOW_VAR*) all_status_vars.buffer,
&tmp, "", tables->table);
pthread_mutex_unlock(&LOCK_status);
DBUG_RETURN(res);
}
int fill_schema_session_status(THD *thd, TABLE_LIST *tables, COND *cond)
{
int res= 0;
DBUG_ENTER("fill_schema_session_status");
pthread_mutex_lock(&LOCK_status);
res= fill_schema_status(thd, (SHOW_VAR*) all_status_vars.buffer,
&thd->status_var, "", tables->table);
pthread_mutex_unlock(&LOCK_status);
DBUG_RETURN(res);
}
int fill_schema_global_variables(THD *thd, TABLE_LIST *tables, COND *cond)
{
int res= 0;
DBUG_ENTER("fill_schema_global_variables");
rw_rdlock(&LOCK_system_variables_hash);
res= show_status_array(thd, "", enumerate_sys_vars(thd, FALSE), OPT_GLOBAL,
NULL, "", tables->table, 1);
rw_unlock(&LOCK_system_variables_hash);
DBUG_RETURN(res);
}
int fill_schema_session_variables(THD *thd, TABLE_LIST *tables, COND *cond)
{
int res= 0;
DBUG_ENTER("fill_schema_session_variables");
rw_rdlock(&LOCK_system_variables_hash);
res= show_status_array(thd, "", enumerate_sys_vars(thd, FALSE), OPT_SESSION,
NULL, "", tables->table, 1);
rw_unlock(&LOCK_system_variables_hash);
DBUG_RETURN(res);
}
ST_FIELD_INFO schema_fields_info[]=
{
@ -5762,25 +5622,9 @@ ST_FIELD_INFO partitions_fields_info[]=
ST_FIELD_INFO variables_fields_info[]=
{
{"Variable_name", 80, MYSQL_TYPE_STRING, 0, 0, "Variable_name"},
{"Value", FN_REFLEN, MYSQL_TYPE_STRING, 0, 0, "Value"},
{0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
};
ST_FIELD_INFO status_fields_info[]=
{
{"VARIABLE_NAME", 64, MYSQL_TYPE_STRING, 0, 0, "Variable_name"},
{"VARIABLE_VALUE", 2207, MYSQL_TYPE_DECIMAL, 0, 0, "Value"},
{0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
};
ST_FIELD_INFO system_variables_fields_info[]=
{
{"VARIABLE_NAME", 64, MYSQL_TYPE_STRING, 0, 0, "Variable_name"},
{"VARIABLE_VALUE", 65535, MYSQL_TYPE_STRING, 0, 1, "Value"},
{"VARIABLE_VALUE", 20480, MYSQL_TYPE_STRING, 0, 1, "Value"},
{0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
};
@ -5920,10 +5764,10 @@ ST_SCHEMA_TABLE schema_tables[]=
Events::fill_schema_events, make_old_format, 0, -1, -1, 0},
{"FILES", files_fields_info, create_schema_table,
fill_schema_files, 0, 0, -1, -1, 0},
{"GLOBAL_STATUS", status_fields_info, create_schema_table,
fill_schema_global_status, make_old_format, 0, -1, -1, 0},
{"GLOBAL_VARIABLES", system_variables_fields_info, create_schema_table,
fill_schema_global_variables, make_old_format, 0, -1, -1, 0},
{"GLOBAL_STATUS", variables_fields_info, create_schema_table,
fill_status, make_old_format, 0, -1, -1, 0},
{"GLOBAL_VARIABLES", variables_fields_info, create_schema_table,
fill_variables, make_old_format, 0, -1, -1, 0},
{"KEY_COLUMN_USAGE", key_column_usage_fields_info, create_schema_table,
get_all_tables, 0, get_schema_key_column_usage_record, 4, 5, 0},
{"OPEN_TABLES", open_tables_fields_info, create_schema_table,
@ -5943,10 +5787,10 @@ ST_SCHEMA_TABLE schema_tables[]=
fill_schema_shemata, make_schemata_old_format, 0, 1, -1, 0},
{"SCHEMA_PRIVILEGES", schema_privileges_fields_info, create_schema_table,
fill_schema_schema_privileges, 0, 0, -1, -1, 0},
{"SESSION_STATUS", status_fields_info, create_schema_table,
fill_schema_session_status, make_old_format, 0, -1, -1, 0},
{"SESSION_VARIABLES", system_variables_fields_info, create_schema_table,
fill_schema_session_variables, make_old_format, 0, -1, -1, 0},
{"SESSION_STATUS", variables_fields_info, create_schema_table,
fill_status, make_old_format, 0, -1, -1, 0},
{"SESSION_VARIABLES", variables_fields_info, create_schema_table,
fill_variables, make_old_format, 0, -1, -1, 0},
{"STATISTICS", stat_fields_info, create_schema_table,
get_all_tables, make_old_format, get_schema_stat_record, 1, 2, 0},
{"STATUS", variables_fields_info, create_schema_table, fill_status,