diff options
Diffstat (limited to 'storage/perfschema/cursor_by_account.cc')
-rw-r--r-- | storage/perfschema/cursor_by_account.cc | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/storage/perfschema/cursor_by_account.cc b/storage/perfschema/cursor_by_account.cc new file mode 100644 index 00000000..2fa224d3 --- /dev/null +++ b/storage/perfschema/cursor_by_account.cc @@ -0,0 +1,82 @@ +/* Copyright (c) 2011, 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */ + +/** + @file storage/perfschema/cursor_by_account.cc + Cursor CURSOR_BY_ACCOUNT (implementation). +*/ + +#include "my_global.h" +#include "cursor_by_account.h" +#include "pfs_buffer_container.h" + +ha_rows +cursor_by_account::get_row_count(void) +{ + return global_account_container.get_row_count(); +} + +cursor_by_account::cursor_by_account(const PFS_engine_table_share *share) + : PFS_engine_table(share, &m_pos), + m_pos(0), m_next_pos(0) +{} + +void cursor_by_account::reset_position(void) +{ + m_pos.m_index= 0; + m_next_pos.m_index= 0; +} + +int cursor_by_account::rnd_next(void) +{ + PFS_account *pfs; + + m_pos.set_at(&m_next_pos); + PFS_account_iterator it= global_account_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_account::rnd_pos(const void *pos) +{ + PFS_account *pfs; + + set_position(pos); + + pfs= global_account_container.get(m_pos.m_index); + if (pfs != NULL) + { + make_row(pfs); + return 0; + } + + return HA_ERR_RECORD_DELETED; +} + |