/* Copyright (c) 2012, 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
but not limited to OpenSSL ) that is licensed under separate terms ,
as designated in a particular file or component or in included license
documentation . The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL .
This program is distributed in the hope that it will be useful ,
but WITHOUT ANY WARRANTY ; without even the implied warranty of
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 ,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef CURSOR_BY_THREAD_CONNECT_ATTR_H
#define CURSOR_BY_THREAD_CONNECT_ATTR_H
#include "pfs_column_types.h"
#include "pfs_engine_table.h"
#include "pfs_instr.h"
/**
\ addtogroup Performance_schema_tables
@ {
*/
/**
Position of a cursor on abstract table
PERFORMANCE_SCHEMA . SESSION_CONNECT_ATTRS .
*/
struct pos_connect_attr_by_thread_by_attr
: public PFS_double_index
{
pos_connect_attr_by_thread_by_attr()
: PFS_double_index(0 , 0 )
{}
inline void next_thread(void )
{
m_index_1++;
m_index_2= 0 ;
}
inline void reset(void )
{
m_index_1= 0 ;
m_index_2= 0 ;
}
};
/** Cursor CURSOR_BY_THREAD_CONNECT_ATTR. */
class cursor_by_thread_connect_attr : public PFS_engine_table
{
public :
static ha_rows get_row_count();
int rnd_next() override;
int rnd_pos(const void *pos) override;
void reset_position(void ) override;
protected :
cursor_by_thread_connect_attr(const PFS_engine_table_share *share);
public :
~cursor_by_thread_connect_attr() = default ;
protected :
virtual void make_row(PFS_thread *thread, uint ordinal)= 0 ;
/** True if row exists */
bool m_row_exists;
private :
/** Current position. */
pos_connect_attr_by_thread_by_attr m_pos;
/** Next position. */
pos_connect_attr_by_thread_by_attr m_next_pos;
};
/** @} */
#endif
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