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82 lines
2.1 KiB
C++
82 lines
2.1 KiB
C++
/* Copyright (c) 2011, 2023, Oracle and/or its affiliates.
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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 Street, Fifth Floor, Boston, MA 02110-1335 USA */
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/**
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@file storage/perfschema/cursor_by_host.cc
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Cursor CURSOR_BY_HOST (implementation).
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*/
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#include "my_global.h"
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#include "cursor_by_host.h"
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#include "pfs_buffer_container.h"
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ha_rows
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cursor_by_host::get_row_count(void)
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{
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return global_host_container.get_row_count();
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}
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cursor_by_host::cursor_by_host(const PFS_engine_table_share *share)
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: PFS_engine_table(share, &m_pos),
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m_pos(0), m_next_pos(0)
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{}
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void cursor_by_host::reset_position(void)
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{
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m_pos.m_index= 0;
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m_next_pos.m_index= 0;
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}
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int cursor_by_host::rnd_next(void)
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{
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PFS_host *pfs;
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m_pos.set_at(&m_next_pos);
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PFS_host_iterator it= global_host_container.iterate(m_pos.m_index);
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pfs= it.scan_next(& m_pos.m_index);
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if (pfs != NULL)
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{
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make_row(pfs);
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m_next_pos.set_after(&m_pos);
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return 0;
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}
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return HA_ERR_END_OF_FILE;
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}
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int
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cursor_by_host::rnd_pos(const void *pos)
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{
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PFS_host *pfs;
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set_position(pos);
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pfs= global_host_container.get(m_pos.m_index);
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if (pfs != NULL)
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{
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make_row(pfs);
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return 0;
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}
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return HA_ERR_RECORD_DELETED;
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}
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