mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 20:12:31 +01:00
357 lines
9.6 KiB
C++
357 lines
9.6 KiB
C++
/* Copyright(C) 2019 MariaDB
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This program is free software; you can redistribute itand /or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111 - 1301 USA*/
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#include <mysql_version.h>
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#include <mysql/plugin.h>
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#include <my_global.h>
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#include <sql_class.h>
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#include <sql_i_s.h>
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#include <mysql/plugin.h>
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#include <sql_show.h>
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#include <threadpool_generic.h>
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namespace Show {
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static ST_FIELD_INFO groups_fields_info[] =
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{
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Column("GROUP_ID", SLong(6), NOT_NULL),
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Column("CONNECTIONS", SLong(6), NOT_NULL),
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Column("THREADS", SLong(6), NOT_NULL),
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Column("ACTIVE_THREADS", SLong(6), NOT_NULL),
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Column("STANDBY_THREADS", SLong(6), NOT_NULL),
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Column("QUEUE_LENGTH", SLong(6), NOT_NULL),
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Column("HAS_LISTENER", STiny(1), NOT_NULL),
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Column("IS_STALLED", STiny(1), NOT_NULL),
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CEnd()
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};
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} // namespace Show
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static int groups_fill_table(THD* thd, TABLE_LIST* tables, COND*)
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{
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if (!all_groups)
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return 0;
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TABLE* table = tables->table;
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for (uint i = 0; i < threadpool_max_size && all_groups[i].pollfd != INVALID_HANDLE_VALUE; i++)
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{
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thread_group_t* group = &all_groups[i];
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/* ID */
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table->field[0]->store(i, true);
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/* CONNECTION_COUNT */
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table->field[1]->store(group->connection_count, true);
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/* THREAD_COUNT */
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table->field[2]->store(group->thread_count, true);
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/* ACTIVE_THREAD_COUNT */
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table->field[3]->store(group->active_thread_count, true);
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/* STANDBY_THREAD_COUNT */
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table->field[4]->store(group->waiting_threads.elements(), true);
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/* QUEUE LENGTH */
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uint queue_len = group->queues[TP_PRIORITY_LOW].elements()
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+ group->queues[TP_PRIORITY_HIGH].elements();
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table->field[5]->store(queue_len, true);
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/* HAS_LISTENER */
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table->field[6]->store((longlong)(group->listener != 0), true);
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/* IS_STALLED */
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table->field[7]->store(group->stalled, true);
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if (schema_table_store_record(thd, table))
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return 1;
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}
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return 0;
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}
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static int groups_init(void* p)
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{
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ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*)p;
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schema->fields_info = Show::groups_fields_info;
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schema->fill_table = groups_fill_table;
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return 0;
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}
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namespace Show {
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static ST_FIELD_INFO queues_field_info[] =
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{
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Column("GROUP_ID", SLong(6), NOT_NULL),
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Column("POSITION", SLong(6), NOT_NULL),
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Column("PRIORITY", SLong(1), NOT_NULL),
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Column("CONNECTION_ID", ULonglong(19), NOT_NULL),
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Column("QUEUEING_TIME_MICROSECONDS", SLonglong(19), NOT_NULL),
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CEnd()
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};
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} // namespace Show
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typedef connection_queue_t::Iterator connection_queue_iterator;
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static int queues_fill_table(THD* thd, TABLE_LIST* tables, COND*)
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{
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if (!all_groups)
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return 0;
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TABLE* table = tables->table;
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for (uint group_id = 0;
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group_id < threadpool_max_size && all_groups[group_id].pollfd != INVALID_HANDLE_VALUE;
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group_id++)
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{
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thread_group_t* group = &all_groups[group_id];
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mysql_mutex_lock(&group->mutex);
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bool err = false;
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int pos = 0;
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ulonglong now = microsecond_interval_timer();
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for (uint prio = 0; prio < NQUEUES && !err; prio++)
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{
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connection_queue_iterator it(group->queues[prio]);
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TP_connection_generic* c;
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while ((c = it++) != 0)
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{
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/* GROUP_ID */
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table->field[0]->store(group_id, true);
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/* POSITION */
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table->field[1]->store(pos++, true);
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/* PRIORITY */
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table->field[2]->store(prio, true);
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/* CONNECTION_ID */
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table->field[3]->store(c->thd->thread_id, true);
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/* QUEUEING_TIME */
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table->field[4]->store(now - c->enqueue_time, true);
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err = schema_table_store_record(thd, table);
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if (err)
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break;
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}
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}
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mysql_mutex_unlock(&group->mutex);
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if (err)
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return 1;
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}
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return 0;
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}
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static int queues_init(void* p)
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{
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ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*)p;
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schema->fields_info = Show::queues_field_info;
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schema->fill_table = queues_fill_table;
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return 0;
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}
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namespace Show {
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static ST_FIELD_INFO stats_fields_info[] =
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{
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Column("GROUP_ID", SLong(6), NOT_NULL),
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Column("THREAD_CREATIONS", SLonglong(19), NOT_NULL),
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Column("THREAD_CREATIONS_DUE_TO_STALL", SLonglong(19), NOT_NULL),
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Column("WAKES", SLonglong(19), NOT_NULL),
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Column("WAKES_DUE_TO_STALL", SLonglong(19), NOT_NULL),
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Column("THROTTLES", SLonglong(19), NOT_NULL),
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Column("STALLS", SLonglong(19), NOT_NULL),
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Column("POLLS_BY_LISTENER", SLonglong(19), NOT_NULL),
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Column("POLLS_BY_WORKER", SLonglong(19), NOT_NULL),
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Column("DEQUEUES_BY_LISTENER", SLonglong(19), NOT_NULL),
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Column("DEQUEUES_BY_WORKER", SLonglong(19), NOT_NULL),
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CEnd()
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};
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} // namespace Show
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static int stats_fill_table(THD* thd, TABLE_LIST* tables, COND*)
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{
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if (!all_groups)
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return 0;
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TABLE* table = tables->table;
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for (uint i = 0; i < threadpool_max_size && all_groups[i].pollfd != INVALID_HANDLE_VALUE; i++)
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{
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table->field[0]->store(i, true);
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thread_group_t* group = &all_groups[i];
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mysql_mutex_lock(&group->mutex);
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thread_group_counters_t* counters = &group->counters;
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table->field[1]->store(counters->thread_creations, true);
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table->field[2]->store(counters->thread_creations_due_to_stall, true);
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table->field[3]->store(counters->wakes, true);
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table->field[4]->store(counters->wakes_due_to_stall, true);
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table->field[5]->store(counters->throttles, true);
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table->field[6]->store(counters->stalls, true);
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table->field[7]->store(counters->polls_by_listener, true);
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table->field[8]->store(counters->polls_by_worker, true);
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table->field[9]->store(counters->dequeues_by_listener, true);
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table->field[10]->store(counters->dequeues_by_worker, true);
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mysql_mutex_unlock(&group->mutex);
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if (schema_table_store_record(thd, table))
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return 1;
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}
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return 0;
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}
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static int stats_reset_table()
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{
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for (uint i = 0; i < threadpool_max_size && all_groups[i].pollfd != INVALID_HANDLE_VALUE; i++)
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{
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thread_group_t* group = &all_groups[i];
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mysql_mutex_lock(&group->mutex);
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memset(&group->counters, 0, sizeof(group->counters));
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mysql_mutex_unlock(&group->mutex);
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}
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return 0;
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}
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static int stats_init(void* p)
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{
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ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*)p;
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schema->fields_info = Show::stats_fields_info;
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schema->fill_table = stats_fill_table;
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schema->reset_table = stats_reset_table;
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return 0;
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}
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namespace Show {
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static ST_FIELD_INFO waits_fields_info[] =
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{
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Column("REASON", Varchar(16), NOT_NULL),
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Column("COUNT", SLonglong(19), NOT_NULL),
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CEnd()
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};
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} // namespace Show
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/* See thd_wait_type enum for explanation*/
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static const LEX_CSTRING wait_reasons[THD_WAIT_LAST] =
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{
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{STRING_WITH_LEN("UNKNOWN")},
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{STRING_WITH_LEN("SLEEP")},
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{STRING_WITH_LEN("DISKIO")},
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{STRING_WITH_LEN("ROW_LOCK")},
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{STRING_WITH_LEN("GLOBAL_LOCK")},
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{STRING_WITH_LEN("META_DATA_LOCK")},
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{STRING_WITH_LEN("TABLE_LOCK")},
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{STRING_WITH_LEN("USER_LOCK")},
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{STRING_WITH_LEN("BINLOG")},
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{STRING_WITH_LEN("GROUP_COMMIT")},
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{STRING_WITH_LEN("SYNC")},
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{STRING_WITH_LEN("NET")}
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};
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extern Atomic_counter<unsigned long long> tp_waits[THD_WAIT_LAST];
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static int waits_fill_table(THD* thd, TABLE_LIST* tables, COND*)
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{
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if (!all_groups)
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return 0;
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TABLE* table = tables->table;
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for (auto i = 0; i < THD_WAIT_LAST; i++)
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{
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table->field[0]->store(wait_reasons[i].str, wait_reasons[i].length, system_charset_info);
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table->field[1]->store(tp_waits[i], true);
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if (schema_table_store_record(thd, table))
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return 1;
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}
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return 0;
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}
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static int waits_reset_table()
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{
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for (auto i = 0; i < THD_WAIT_LAST; i++)
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tp_waits[i] = 0;
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return 0;
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}
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static int waits_init(void* p)
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{
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ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*)p;
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schema->fields_info = Show::waits_fields_info;
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schema->fill_table = waits_fill_table;
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schema->reset_table = waits_reset_table;
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return 0;
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}
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static struct st_mysql_information_schema plugin_descriptor =
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{ MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION };
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maria_declare_plugin(thread_pool_info)
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{
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MYSQL_INFORMATION_SCHEMA_PLUGIN,
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&plugin_descriptor,
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"THREAD_POOL_GROUPS",
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"Vladislav Vaintroub",
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"Provides information about threadpool groups.",
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PLUGIN_LICENSE_GPL,
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groups_init,
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0,
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0x0100,
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NULL,
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NULL,
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"1.0",
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MariaDB_PLUGIN_MATURITY_STABLE
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},
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{
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MYSQL_INFORMATION_SCHEMA_PLUGIN,
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&plugin_descriptor,
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"THREAD_POOL_QUEUES",
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"Vladislav Vaintroub",
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"Provides information about threadpool queues.",
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PLUGIN_LICENSE_GPL,
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queues_init,
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0,
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0x0100,
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NULL,
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NULL,
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"1.0",
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MariaDB_PLUGIN_MATURITY_STABLE
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},
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{
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MYSQL_INFORMATION_SCHEMA_PLUGIN,
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&plugin_descriptor,
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"THREAD_POOL_STATS",
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"Vladislav Vaintroub",
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"Provides performance counter information for threadpool.",
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PLUGIN_LICENSE_GPL,
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stats_init,
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0,
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0x0100,
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NULL,
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NULL,
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"1.0",
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MariaDB_PLUGIN_MATURITY_STABLE
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},
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{
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MYSQL_INFORMATION_SCHEMA_PLUGIN,
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&plugin_descriptor,
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"THREAD_POOL_WAITS",
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"Vladislav Vaintroub",
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"Provides wait counters for threadpool.",
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PLUGIN_LICENSE_GPL,
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waits_init,
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0,
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0x0100,
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NULL,
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NULL,
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"1.0",
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MariaDB_PLUGIN_MATURITY_STABLE
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}
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maria_declare_plugin_end;
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