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88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/* Copyright (c) 2008, 2010, 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 Foundation,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
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#ifndef TABLE_FILE_INSTANCES_H
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#define TABLE_FILE_INSTANCES_H
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/**
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@file storage/perfschema/table_file_instances.h
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Table FILE_INSTANCES (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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/**
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@addtogroup Performance_schema_tables
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@{
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*/
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/** A row of PERFORMANCE_SCHEMA.FILE_INSTANCES. */
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struct row_file_instances
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{
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/** Column FILE_NAME. */
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const char *m_filename;
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/** Length in bytes of @c m_filename. */
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uint m_filename_length;
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/** Column EVENT_NAME. */
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const char *m_event_name;
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/** Length in bytes of @c m_event_name. */
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uint m_event_name_length;
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/** Column OPEN_COUNT. */
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uint m_open_count;
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};
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/** Table PERFORMANCE_SCHEMA.FILE_INSTANCES. */
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class table_file_instances : 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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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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private:
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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_file_instances();
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public:
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~table_file_instances()
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{}
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private:
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void make_row(PFS_file *pfs);
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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_file_instances m_row;
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/** True if 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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