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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
commit | a175314c3e5827eb193872241446f2f8f5c9d33c (patch) | |
tree | cd3d60ca99ae00829c52a6ca79150a5b6e62528b /storage/perfschema/cursor_by_thread_connect_attr.h | |
parent | Initial commit. (diff) | |
download | mariadb-10.5-9e4947182e0b875da38088fdd168e775f473b8ad.tar.xz mariadb-10.5-9e4947182e0b875da38088fdd168e775f473b8ad.zip |
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'storage/perfschema/cursor_by_thread_connect_attr.h')
-rw-r--r-- | storage/perfschema/cursor_by_thread_connect_attr.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/storage/perfschema/cursor_by_thread_connect_attr.h b/storage/perfschema/cursor_by_thread_connect_attr.h new file mode 100644 index 00000000..7aa31115 --- /dev/null +++ b/storage/perfschema/cursor_by_thread_connect_attr.h @@ -0,0 +1,89 @@ +/* Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. + + 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(); + + virtual int rnd_next(); + virtual int rnd_pos(const void *pos); + virtual void reset_position(void); + +protected: + cursor_by_thread_connect_attr(const PFS_engine_table_share *share); + +public: + ~cursor_by_thread_connect_attr() + {} + +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 |