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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:04:16 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:04:16 +0000
commita68fb2d8219f6bccc573009600e9f23e89226a5e (patch)
treed742d35d14ae816e99293d2b01face30e9f3a46b /storage/perfschema/cursor_by_thread.h
parentInitial commit. (diff)
downloadmariadb-10.6-upstream.tar.xz
mariadb-10.6-upstream.zip
Adding upstream version 1:10.6.11.upstream/1%10.6.11upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'storage/perfschema/cursor_by_thread.h')
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1 files changed, 68 insertions, 0 deletions
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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 */
+
+#ifndef CURSOR_BY_THREAD_H
+#define CURSOR_BY_THREAD_H
+
+/**
+ @file storage/perfschema/cursor_by_thread.h
+ Cursor CURSOR_BY_THREAD (declarations).
+*/
+
+#include "pfs_engine_table.h"
+#include "pfs_instr.h"
+#include "table_helper.h"
+
+/**
+ @addtogroup Performance_schema_tables
+ @{
+*/
+
+/** Cursor CURSOR_BY_THREAD. */
+class cursor_by_thread : 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(const PFS_engine_table_share *share);
+
+public:
+ ~cursor_by_thread()
+ {}
+
+protected:
+ virtual void make_row(PFS_thread *thread)= 0;
+
+private:
+ /** Current position. */
+ PFS_simple_index m_pos;
+ /** Next position. */
+ PFS_simple_index m_next_pos;
+};
+
+/** @} */
+#endif