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Diffstat (limited to 'storage/perfschema/table_esms_by_digest.h')
-rw-r--r-- | storage/perfschema/table_esms_by_digest.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/storage/perfschema/table_esms_by_digest.h b/storage/perfschema/table_esms_by_digest.h new file mode 100644 index 00000000..4711ffc5 --- /dev/null +++ b/storage/perfschema/table_esms_by_digest.h @@ -0,0 +1,101 @@ +/* Copyright (c) 2010, 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 */ + +#ifndef TABLE_ESMS_BY_DIGEST_H +#define TABLE_ESMS_BY_DIGEST_H + +/** + @file storage/perfschema/table_esms_by_digest.h + Table EVENTS_STATEMENTS_SUMMARY_BY_DIGEST (declarations). +*/ + +#include "table_helper.h" +#include "pfs_digest.h" + +/** + @addtogroup Performance_schema_tables + @{ +*/ + +/** + A row of table + PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_SUMMARY_BY_DIGEST. +*/ +struct row_esms_by_digest +{ + /** Columns DIGEST/DIGEST_TEXT. */ + PFS_digest_row m_digest; + + /** Columns COUNT_STAR, SUM/MIN/AVG/MAX TIMER_WAIT. */ + PFS_statement_stat_row m_stat; + + /** Column FIRST_SEEN. */ + ulonglong m_first_seen; + /** Column LAST_SEEN. */ + ulonglong m_last_seen; +}; + +/** Table PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_SUMMARY_BY_DIGEST. */ +class table_esms_by_digest : public PFS_engine_table +{ +public: + static PFS_engine_table_share_state m_share_state; + /** Table share */ + static PFS_engine_table_share m_share; + static PFS_engine_table* create(); + static int delete_all_rows(); + static ha_rows get_row_count(); + + virtual int rnd_next(); + virtual int rnd_pos(const void *pos); + virtual void reset_position(void); + +protected: + virtual int read_row_values(TABLE *table, + unsigned char *buf, + Field **fields, + bool read_all); + + table_esms_by_digest(); + +public: + ~table_esms_by_digest() = default; + +protected: + void make_row(PFS_statements_digest_stat*); + +private: + /** Table share lock. */ + static THR_LOCK m_table_lock; + + /** Current row. */ + row_esms_by_digest m_row; + /** True is the current row exists. */ + bool m_row_exists; + /** Current position. */ + PFS_simple_index m_pos; + /** Next position. */ + PFS_simple_index m_next_pos; +}; + +/** @} */ +#endif |