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/* Copyright (c) 2011, 2022, 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
/**
@file storage/perfschema/cursor_by_thread.cc
Cursor CURSOR_BY_THREAD (implementation).
*/
#include "my_global.h"
#include "cursor_by_thread.h"
#include "pfs_instr.h"
#include "pfs_buffer_container.h"
ha_rows
cursor_by_thread::get_row_count(void)
{
return global_thread_container.get_row_count();
}
cursor_by_thread::cursor_by_thread(const PFS_engine_table_share *share)
: PFS_engine_table(share, &m_pos),
m_pos(0), m_next_pos(0)
{}
void cursor_by_thread::reset_position(void)
{
m_pos.m_index= 0;
m_next_pos.m_index= 0;
}
int cursor_by_thread::rnd_next(void)
{
PFS_thread *pfs;
m_pos.set_at(&m_next_pos);
PFS_thread_iterator it= global_thread_container.iterate(m_pos.m_index);
pfs= it.scan_next(& m_pos.m_index);
if (pfs != NULL)
{
make_row(pfs);
m_next_pos.set_after(&m_pos);
return 0;
}
return HA_ERR_END_OF_FILE;
}
int
cursor_by_thread::rnd_pos(const void *pos)
{
PFS_thread *pfs;
set_position(pos);
pfs= global_thread_container.get(m_pos.m_index);
if (pfs != NULL)
{
make_row(pfs);
return 0;
}
return HA_ERR_RECORD_DELETED;
}
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