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91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
/* Copyright (c) 2010, 2012, Oracle 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 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 02110-1335 USA */
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#ifndef TABLE_IO_WAITS_SUMMARY_BY_TABLE_H
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#define TABLE_IO_WAITS_SUMMARY_BY_TABLE_H
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/**
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@file storage/perfschema/table_tiws_by_table.h
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Table TABLE_IO_WAITS_SUMMARY_BY_TABLE (declarations).
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*/
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#include "pfs_column_types.h"
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#include "pfs_engine_table.h"
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#include "pfs_instr_class.h"
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#include "pfs_instr.h"
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#include "table_helper.h"
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/**
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@addtogroup Performance_schema_tables
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@{
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*/
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/**
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A row of table
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PERFORMANCE_SCHEMA.TABLE_IO_WAITS_SUMMARY_BY_TABLE.
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*/
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struct row_tiws_by_table
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{
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/** Column OBJECT_TYPE, SCHEMA_NAME, OBJECT_NAME. */
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PFS_object_row m_object;
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/** Columns COUNT/SUM/MIN/AVG/MAX (+_READ, +WRITE). */
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PFS_table_io_stat_row m_stat;
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};
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/** Table PERFORMANCE_SCHEMA.TABLE_IO_WAITS_SUMMARY_BY_TABLE. */
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class table_tiws_by_table : public PFS_engine_table
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{
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public:
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/** Table share */
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static PFS_engine_table_share m_share;
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static PFS_engine_table* create();
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static int delete_all_rows();
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virtual int rnd_init(bool scan);
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virtual int rnd_next();
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virtual int rnd_pos(const void *pos);
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virtual void reset_position(void);
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protected:
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virtual int read_row_values(TABLE *table,
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unsigned char *buf,
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Field **fields,
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bool read_all);
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table_tiws_by_table();
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public:
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~table_tiws_by_table()
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{}
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protected:
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void make_row(PFS_table_share *table_share);
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private:
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/** Table share lock. */
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static THR_LOCK m_table_lock;
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/** Current row. */
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row_tiws_by_table m_row;
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/** True is the current row exists. */
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bool m_row_exists;
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/** Current position. */
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PFS_simple_index m_pos;
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/** Next position. */
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PFS_simple_index m_next_pos;
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};
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/** @} */
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#endif
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