mariadb/storage/perfschema/table_esms_global_by_event_name.cc

/* Copyright (c) 2010, 2023, Oracle and/or its affiliates.

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License, version 2.0,
  as published by the Free Software Foundation.

  This program is also distributed with certain software (including
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  as designated in a particular file or component or in included license
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  This program is distributed in the hope that it will be useful,
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  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License, version 2.0, for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */

/**
  @file storage/perfschema/table_esms_global_by_event_name.cc
  Table EVENTS_STATEMENTS_SUMMARY_GLOBAL_BY_EVENT_NAME (implementation).
*/

#include "my_global.h"
#include "my_thread.h"
#include "pfs_instr_class.h"
#include "pfs_column_types.h"
#include "pfs_column_values.h"
#include "table_esms_global_by_event_name.h"
#include "pfs_global.h"
#include "pfs_instr.h"
#include "pfs_timer.h"
#include "pfs_visitor.h"
#include "field.h"

THR_LOCK table_esms_global_by_event_name::m_table_lock;

PFS_engine_table_share_state
table_esms_global_by_event_name::m_share_state = {
  false /* m_checked */
};

PFS_engine_table_share
table_esms_global_by_event_name::m_share=
{
  { C_STRING_WITH_LEN("events_statements_summary_global_by_event_name") },
  &pfs_truncatable_acl,
  table_esms_global_by_event_name::create,
  NULL, /* write_row */
  table_esms_global_by_event_name::delete_all_rows,
  table_esms_global_by_event_name::get_row_count,
  sizeof(PFS_simple_index),
  &m_table_lock,
  { C_STRING_WITH_LEN("CREATE TABLE events_statements_summary_global_by_event_name("
                      "EVENT_NAME VARCHAR(128) not null comment 'Event name.',"
                      "COUNT_STAR BIGINT unsigned not null comment 'Number of summarized events',"
                      "SUM_TIMER_WAIT BIGINT unsigned not null comment 'Total wait time of the summarized events that are timed.',"
                      "MIN_TIMER_WAIT BIGINT unsigned not null comment 'Minimum wait time of the summarized events that are timed.',"
                      "AVG_TIMER_WAIT BIGINT unsigned not null comment 'Average wait time of the summarized events that are timed.',"
                      "MAX_TIMER_WAIT BIGINT unsigned not null comment 'Maximum wait time of the summarized events that are timed.',"
                      "SUM_LOCK_TIME BIGINT unsigned not null comment 'Sum of the LOCK_TIME column in the events_statements_current table.',"
                      "SUM_ERRORS BIGINT unsigned not null comment 'Sum of the ERRORS column in the events_statements_current table.',"
                      "SUM_WARNINGS BIGINT unsigned not null comment 'Sum of the WARNINGS column in the events_statements_current table.',"
                      "SUM_ROWS_AFFECTED BIGINT unsigned not null comment 'Sum of the ROWS_AFFECTED column in the events_statements_current table.',"
                      "SUM_ROWS_SENT BIGINT unsigned not null comment 'Sum of the ROWS_SENT column in the events_statements_current table.',"
                      "SUM_ROWS_EXAMINED BIGINT unsigned not null comment 'Sum of the ROWS_EXAMINED column in the events_statements_current table.',"
                      "SUM_CREATED_TMP_DISK_TABLES BIGINT unsigned not null comment 'Sum of the CREATED_TMP_DISK_TABLES column in the events_statements_current table.',"
                      "SUM_CREATED_TMP_TABLES BIGINT unsigned not null comment 'Sum of the CREATED_TMP_TABLES column in the events_statements_current table.',"
                      "SUM_SELECT_FULL_JOIN BIGINT unsigned not null comment 'Sum of the SELECT_FULL_JOIN column in the events_statements_current table.',"
                      "SUM_SELECT_FULL_RANGE_JOIN BIGINT unsigned not null comment 'Sum of the SELECT_FULL_RANGE_JOIN column in the events_statements_current table.',"
                      "SUM_SELECT_RANGE BIGINT unsigned not null comment 'Sum of the SELECT_RANGE column in the events_statements_current table.',"
                      "SUM_SELECT_RANGE_CHECK BIGINT unsigned not null comment 'Sum of the SELECT_RANGE_CHECK column in the events_statements_current table.',"
                      "SUM_SELECT_SCAN BIGINT unsigned not null comment 'Sum of the SELECT_SCAN column in the events_statements_current table.',"
                      "SUM_SORT_MERGE_PASSES BIGINT unsigned not null comment 'Sum of the SORT_MERGE_PASSES column in the events_statements_current table.',"
                      "SUM_SORT_RANGE BIGINT unsigned not null comment 'Sum of the SORT_RANGE column in the events_statements_current table.',"
                      "SUM_SORT_ROWS BIGINT unsigned not null comment 'Sum of the SORT_ROWS column in the events_statements_current table.',"
                      "SUM_SORT_SCAN BIGINT unsigned not null comment 'Sum of the SORT_SCAN column in the events_statements_current table.',"
                      "SUM_NO_INDEX_USED BIGINT unsigned not null comment 'Sum of the NO_INDEX_USED column in the events_statements_current table.',"
                      "SUM_NO_GOOD_INDEX_USED BIGINT unsigned not null comment 'Sum of the NO_GOOD_INDEX_USED column in the events_statements_current table.')") },
  false, /* m_perpetual */
  false, /* m_optional */
  &m_share_state
};

PFS_engine_table*
table_esms_global_by_event_name::create(void)
{
  return new table_esms_global_by_event_name();
}

int
table_esms_global_by_event_name::delete_all_rows(void)
{
  reset_events_statements_by_thread();
  reset_events_statements_by_account();
  reset_events_statements_by_user();
  reset_events_statements_by_host();
  reset_events_statements_global();
  return 0;
}

ha_rows
table_esms_global_by_event_name::get_row_count(void)
{
  return statement_class_max;
}

table_esms_global_by_event_name::table_esms_global_by_event_name()
  : PFS_engine_table(&m_share, &m_pos),
    m_row_exists(false), m_pos(1), m_next_pos(1)
{}

void table_esms_global_by_event_name::reset_position(void)
{
  m_pos= 1;
  m_next_pos= 1;
}

int table_esms_global_by_event_name::rnd_init(bool scan)
{
  m_normalizer= time_normalizer::get(statement_timer);
  return 0;
}

int table_esms_global_by_event_name::rnd_next(void)
{
  PFS_statement_class *statement_class;

  if (global_instr_class_statements_array == NULL)
    return HA_ERR_END_OF_FILE;

  m_pos.set_at(&m_next_pos);

  statement_class= find_statement_class(m_pos.m_index);
  if (statement_class)
  {
    make_row(statement_class);
    m_next_pos.set_after(&m_pos);
    return 0;
  }

  return HA_ERR_END_OF_FILE;
}

int
table_esms_global_by_event_name::rnd_pos(const void *pos)
{
  PFS_statement_class *statement_class;

  set_position(pos);

  if (global_instr_class_statements_array == NULL)
    return HA_ERR_END_OF_FILE;

  statement_class=find_statement_class(m_pos.m_index);
  if (statement_class)
  {
    make_row(statement_class);
    return 0;
  }

  return HA_ERR_RECORD_DELETED;
}


void table_esms_global_by_event_name
::make_row(PFS_statement_class *klass)
{
  m_row_exists= false;

  if (klass->is_mutable())
    return;

  m_row.m_event_name.make_row(klass);

  PFS_connection_statement_visitor visitor(klass);
  PFS_connection_iterator::visit_global(true,  /* hosts */
                                        false, /* users */
                                        true,  /* accounts */
                                        true,  /* threads */
                                        false, /* THDs */
                                        & visitor);

  m_row.m_stat.set(m_normalizer, & visitor.m_stat);
  m_row_exists= true;
}

int table_esms_global_by_event_name
::read_row_values(TABLE *table, unsigned char *, Field **fields,
                  bool read_all)
{
  Field *f;

  if (unlikely(! m_row_exists))
    return HA_ERR_RECORD_DELETED;

  /* Set the null bits */
  assert(table->s->null_bytes == 0);

  for (; (f= *fields) ; fields++)
  {
    if (read_all || bitmap_is_set(table->read_set, f->field_index))
    {
      switch(f->field_index)
      {
      case 0: /* NAME */
        m_row.m_event_name.set_field(f);
        break;
      default: /* 1, ... COUNT/SUM/MIN/AVG/MAX */
        m_row.m_stat.set_field(f->field_index - 1, f);
        break;
      }
    }
  }

  return 0;
}