89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
/* Copyright (c) 2012, 2019, 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, 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 hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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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#ifndef CURSOR_BY_THREAD_CONNECT_ATTR_H
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#define CURSOR_BY_THREAD_CONNECT_ATTR_H
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/**
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@file storage/perfschema/cursor_by_thread_connect_attr.h
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*/
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#include <sys/types.h>
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#include "storage/perfschema/pfs_column_types.h"
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#include "storage/perfschema/pfs_engine_table.h"
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#include "storage/perfschema/pfs_instr.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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Position of a cursor on abstract table
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PERFORMANCE_SCHEMA.SESSION_CONNECT_ATTRS.
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*/
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struct pos_connect_attr_by_thread_by_attr : public PFS_double_index {
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pos_connect_attr_by_thread_by_attr() : PFS_double_index(0, 0) {}
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inline void next_thread(void) {
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m_index_1++;
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m_index_2 = 0;
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}
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inline void reset(void) {
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m_index_1 = 0;
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m_index_2 = 0;
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}
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};
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/** Cursor CURSOR_BY_THREAD_CONNECT_ATTR. */
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class cursor_by_thread_connect_attr : public PFS_engine_table {
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public:
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static ha_rows get_row_count();
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virtual void reset_position(void);
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virtual int rnd_next();
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virtual int rnd_pos(const void *pos);
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virtual int index_init(uint, bool) { return 1; }
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virtual int index_next() { return 1; }
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protected:
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cursor_by_thread_connect_attr(const PFS_engine_table_share *share);
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public:
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~cursor_by_thread_connect_attr() {}
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protected:
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virtual int make_row(PFS_thread *thread, uint ordinal) = 0;
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/** Current position. */
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pos_connect_attr_by_thread_by_attr m_pos;
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/** Next position. */
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pos_connect_attr_by_thread_by_attr m_next_pos;
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};
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/** @} */
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#endif
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