121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
/* Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
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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 St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef TABLE_SESSION_CONNECT_H
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#define TABLE_SESSION_CONNECT_H
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/**
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@file storage/perfschema/table_session_connect.h
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TABLE SESSION_CONNECT (abstract)
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*/
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#include <sys/types.h>
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#include "storage/perfschema/cursor_by_thread_connect_attr.h"
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#include "storage/perfschema/pfs_column_types.h"
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#include "storage/perfschema/table_helper.h"
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#define MAX_ATTR_NAME_CHARS 32
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#define MAX_ATTR_VALUE_CHARS 1024
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#define MAX_UTF8MB4_BYTES 4
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/** symbolic names for field offsets, keep in sync with field_types */
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enum field_offsets {
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FO_PROCESS_ID,
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FO_ATTR_NAME,
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FO_ATTR_VALUE,
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FO_ORDINAL_POSITION
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};
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/**
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A row of PERFORMANCE_SCHEMA.SESSION_CONNECT_ATTRS and
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PERFORMANCE_SCHEMA.SESSION_ACCOUNT_CONNECT_ATTRS.
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*/
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struct row_session_connect_attrs {
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/** Column PROCESS_ID. */
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ulong m_process_id;
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/** Column ATTR_NAME. In UTF8MB4 */
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char m_attr_name[MAX_ATTR_NAME_CHARS * MAX_UTF8MB4_BYTES];
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/** Length in bytes of @c m_attr_name. */
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uint m_attr_name_length;
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/** Column ATTR_VALUE. In UTF8MB4 */
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char m_attr_value[MAX_ATTR_VALUE_CHARS * MAX_UTF8MB4_BYTES];
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/** Length in bytes of @c m_attr_name. */
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uint m_attr_value_length;
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/** Column ORDINAL_POSITION. */
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ulong m_ordinal_position;
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};
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class PFS_index_session_connect : public PFS_engine_index {
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public:
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PFS_index_session_connect()
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: PFS_engine_index(&m_key_1, &m_key_2),
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m_key_1("PROCESSLIST_ID"),
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m_key_2("ATTR_NAME") {}
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~PFS_index_session_connect() {}
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virtual bool match(PFS_thread *pfs);
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virtual bool match(row_session_connect_attrs *row);
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private:
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PFS_key_processlist_id m_key_1;
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PFS_key_name m_key_2;
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};
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/** Abstract table PERFORMANCE_SCHEMA.SESSION_CONNECT_ATTRS. */
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class table_session_connect : public cursor_by_thread_connect_attr {
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protected:
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table_session_connect(const PFS_engine_table_share *share);
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public:
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~table_session_connect();
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protected:
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virtual int index_init(uint idx, bool sorted);
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virtual int index_next();
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virtual int make_row(PFS_thread *pfs, uint ordinal);
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virtual bool thread_fits(PFS_thread *thread);
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virtual int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
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bool read_all);
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protected:
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/** Current row. */
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row_session_connect_attrs m_row;
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/** Safe copy of @c PFS_thread::m_session_connect_attrs. */
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char *m_copy_session_connect_attrs;
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/** Safe copy of @c PFS_thread::m_session_connect_attrs_length. */
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uint m_copy_session_connect_attrs_length;
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PFS_index_session_connect *m_opened_index;
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};
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bool read_nth_attr(const char *connect_attrs, uint connect_attrs_length,
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const CHARSET_INFO *connect_attrs_cs, uint ordinal,
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char *attr_name, uint max_attr_name, uint *attr_name_length,
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char *attr_value, uint max_attr_value,
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uint *attr_value_length);
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/** @} */
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#endif
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