69 lines
2.6 KiB
C++
69 lines
2.6 KiB
C++
/* Copyright (c) 2018, 2021, Alibaba and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL/PolarDB-X Engine hereby grant you an
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additional permission to link the program and your derivative works with the
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separately licensed software that they have included with
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MySQL/PolarDB-X Engine.
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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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "plugin/performance_point/pps_stat.h"
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#include <memory>
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#include "plugin/performance_point/pps.h"
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void PPS_thread::begin_statement() {
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PPS_statement *sub_statement = nullptr;
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/* Top level statement */
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if (m_statement == nullptr) {
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m_statement = &m_main_statement;
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DBUG_ASSERT(m_statement->prev == nullptr);
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} else {
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std::unique_ptr<PPS_statement, PPS_element_deleter<PPS_statement>>
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m_pps_statement(allocate_object<PPS_statement>());
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if (m_pps_statement) {
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sub_statement = m_pps_statement.release();
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sub_statement->prev = m_statement;
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m_statement = sub_statement;
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}
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}
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}
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/**
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End statement:
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1) Aggregate statement stats to THD;
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2) Reset statement stats.
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*/
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void PPS_thread::end_statement() {
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DBUG_ASSERT(m_statement);
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/**
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If malloc failed when begin statement, then current m_statement will be
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NULL. and result in statistics loss, here allow to happen it.
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*/
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if (m_statement) {
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m_cpu_stat.aggregate_from(m_statement->cpu_stat());
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m_io_stat.aggregate_from(m_statement->io_stat());
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m_lock_stat.aggregate_from(m_statement->lock_stat());
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m_statement->reset();
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if (m_statement == &m_main_statement) {
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DBUG_ASSERT(m_statement->prev == nullptr);
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m_statement = nullptr;
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} else {
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PPS_statement *current = m_statement;
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m_statement = m_statement->prev;
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DBUG_ASSERT(m_statement != nullptr);
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destroy_object<PPS_statement>(current);
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}
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}
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}
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