/* Copyright (c) 2008, 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 */
#include "my_global.h"
#include "cursor_by_thread_connect_attr.h"
#include "pfs_buffer_container.h"
ha_rows
cursor_by_thread_connect_attr::get_row_count(void )
{
/*
The real number of attributes per thread does not matter ,
we only need to hint the optimizer there are many per thread ,
so abusing session_connect_attrs_size_per_thread
( which is a number of bytes , not attributes )
*/
return global_thread_container.get_row_count() *
session_connect_attrs_size_per_thread;
}
cursor_by_thread_connect_attr::cursor_by_thread_connect_attr(
const PFS_engine_table_share *share) :
PFS_engine_table(share, &m_pos), m_row_exists(false )
{}
int cursor_by_thread_connect_attr::rnd_next(void )
{
PFS_thread *thread;
bool has_more_thread= true ;
for (m_pos.set_at(&m_next_pos);
has_more_thread;
m_pos.next_thread())
{
thread= global_thread_container.get(m_pos.m_index_1, & has_more_thread);
if (thread != NULL)
{
make_row(thread, m_pos.m_index_2);
if (m_row_exists)
{
m_next_pos.set_after(&m_pos);
return 0 ;
}
}
}
return HA_ERR_END_OF_FILE;
}
int cursor_by_thread_connect_attr::rnd_pos(const void *pos)
{
PFS_thread *thread;
set_position(pos);
thread= global_thread_container.get(m_pos.m_index_1);
if (thread != NULL)
{
make_row(thread, m_pos.m_index_2);
if (m_row_exists)
return 0 ;
}
return HA_ERR_RECORD_DELETED;
}
void cursor_by_thread_connect_attr::reset_position(void )
{
m_pos.reset();
m_next_pos.reset();
}
Messung V0.5 in Prozent C=98 H=91 G=94
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-08)
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