diff options
Diffstat (limited to 'sql/sql_show.cc')
| -rw-r--r-- | sql/sql_show.cc | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/sql/sql_show.cc b/sql/sql_show.cc index 9abc40a09dc..141f49c0e1d 100644 --- a/sql/sql_show.cc +++ b/sql/sql_show.cc @@ -2220,6 +2220,31 @@ void remove_status_vars(SHOW_VAR *list) } + +static void update_key_cache_stat_var(KEY_CACHE *key_cache, size_t ofs) +{ + uint var_no; + switch (ofs) { + case offsetof(KEY_CACHE, blocks_used): + case offsetof(KEY_CACHE, blocks_unused): + case offsetof(KEY_CACHE, global_blocks_changed): + var_no= (ofs-offsetof(KEY_CACHE, blocks_used))/sizeof(ulong); + *(ulong *)((char *) key_cache + ofs)= + (ulong) get_key_cache_stat_value(key_cache, var_no); + break; + case offsetof(KEY_CACHE, global_cache_r_requests): + case offsetof(KEY_CACHE, global_cache_read): + case offsetof(KEY_CACHE, global_cache_w_requests): + case offsetof(KEY_CACHE, global_cache_write): + var_no= 3+(ofs-offsetof(KEY_CACHE, global_cache_w_requests))/ + sizeof(ulonglong); + *(ulonglong *)((char *) key_cache + ofs)= + get_key_cache_stat_value(key_cache, var_no); + break; + } +} + + static bool show_status_array(THD *thd, const char *wild, SHOW_VAR *variables, enum enum_var_type value_type, @@ -2352,10 +2377,12 @@ static bool show_status_array(THD *thd, const char *wild, break; } case SHOW_KEY_CACHE_LONG: + update_key_cache_stat_var(dflt_key_cache, (size_t) value); value= (char*) dflt_key_cache + (ulong)value; end= int10_to_str(*(long*) value, buff, 10); break; case SHOW_KEY_CACHE_LONGLONG: + update_key_cache_stat_var(dflt_key_cache, (size_t) value); value= (char*) dflt_key_cache + (ulong)value; end= longlong10_to_str(*(longlong*) value, buff, 10); break; @@ -6611,6 +6638,90 @@ int fill_schema_files(THD *thd, TABLE_LIST *tables, COND *cond) } +static +int store_key_cache_table_record(THD *thd, TABLE *table, + const char *name, uint name_length, + KEY_CACHE *key_cache, + uint partitions, uint partition_no) +{ + KEY_CACHE_STATISTICS key_cache_stats; + uint err; + DBUG_ENTER("store_key_cache_table_record"); + + get_key_cache_statistics(key_cache, partition_no, &key_cache_stats); + + if (key_cache_stats.mem_size == 0) + DBUG_RETURN(0); + + restore_record(table, s->default_values); + table->field[0]->store(name, name_length, system_charset_info); + if (partitions == 0) + table->field[1]->set_null(); + else + { + table->field[1]->set_notnull(); + table->field[1]->store((long) partitions, TRUE); + } + + if (partition_no == 0) + table->field[2]->set_null(); + else + { + table->field[2]->set_notnull(); + table->field[2]->store((long) partition_no, TRUE); + } + table->field[3]->store(key_cache_stats.mem_size, TRUE); + table->field[4]->store(key_cache_stats.block_size, TRUE); + table->field[5]->store(key_cache_stats.blocks_used, TRUE); + table->field[6]->store(key_cache_stats.blocks_unused, TRUE); + table->field[7]->store(key_cache_stats.blocks_changed, TRUE); + table->field[8]->store(key_cache_stats.read_requests, TRUE); + table->field[9]->store(key_cache_stats.reads, TRUE); + table->field[10]->store(key_cache_stats.write_requests, TRUE); + table->field[11]->store(key_cache_stats.writes, TRUE); + + err= schema_table_store_record(thd, table); + DBUG_RETURN(err); +} + + +int fill_key_cache_tables(THD *thd, TABLE_LIST *tables, COND *cond) +{ + TABLE *table= tables->table; + I_List_iterator<NAMED_LIST> it(key_caches); + NAMED_LIST *element; + DBUG_ENTER("fill_key_cache_tables"); + + while ((element= it++)) + { + KEY_CACHE *key_cache= (KEY_CACHE *) element->data; + + if (!key_cache->key_cache_inited) + continue; + + uint partitions= key_cache->partitions; + DBUG_ASSERT(partitions <= MAX_KEY_CACHE_PARTITIONS); + + if (partitions) + { + for (uint i= 0; i < partitions; i++) + { + if (store_key_cache_table_record(thd, table, + element->name, element->name_length, + key_cache, partitions, i+1)) + DBUG_RETURN(1); + } + } + + if (store_key_cache_table_record(thd, table, + element->name, element->name_length, + key_cache, partitions, 0)) + DBUG_RETURN(1); + } + DBUG_RETURN(0); +} + + ST_FIELD_INFO schema_fields_info[]= { {"CATALOG_NAME", FN_REFLEN, MYSQL_TYPE_STRING, 0, 1, 0, SKIP_OPEN_TABLE}, @@ -7188,6 +7299,35 @@ ST_FIELD_INFO referential_constraints_fields_info[]= }; +ST_FIELD_INFO keycache_fields_info[]= +{ + {"KEY_CACHE_NAME", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE}, + {"PARTITIONS", 3, MYSQL_TYPE_LONG, 0, + (MY_I_S_MAYBE_NULL | MY_I_S_UNSIGNED) , 0, SKIP_OPEN_TABLE}, + {"PARTITION_NUMBER", 3, MYSQL_TYPE_LONG, 0, + (MY_I_S_MAYBE_NULL | MY_I_S_UNSIGNED), 0, SKIP_OPEN_TABLE}, + {"FULL_SIZE", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), 0, SKIP_OPEN_TABLE}, + {"BLOCK_SIZE", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), 0, SKIP_OPEN_TABLE }, + {"USED_BLOCKS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), "Key_blocks_used", SKIP_OPEN_TABLE}, + {"UNUSED_BLOCKS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), "Key_blocks_unused", SKIP_OPEN_TABLE}, + {"DIRTY_BLOCKS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), "Key_blocks_not_flushed", SKIP_OPEN_TABLE}, + {"READ_REQUESTS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), "Key_read_requests", SKIP_OPEN_TABLE}, + {"READS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), "Key_reads", SKIP_OPEN_TABLE}, + {"WRITE_REQUESTS", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), "Key_write_requests", SKIP_OPEN_TABLE}, + {"WRITES", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG, 0, + (MY_I_S_UNSIGNED), "Key_writes", SKIP_OPEN_TABLE}, + {0, 0, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE} +}; + + /* Description of ST_FIELD_INFO in table.h @@ -7227,6 +7367,8 @@ ST_SCHEMA_TABLE schema_tables[]= fill_variables, make_old_format, 0, 0, -1, 0, 0}, {"INDEX_STATISTICS", index_stats_fields_info, create_schema_table, fill_schema_index_stats, make_old_format, 0, -1, -1, 0, 0}, + {"KEY_CACHES", keycache_fields_info, create_schema_table, + fill_key_cache_tables, make_old_format, 0, -1,-1, 0, 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_TABLE_ONLY}, |