1 /* Copyright (c) 2011, 2021, Oracle and/or its affiliates. 2 3 This program is free software; you can redistribute it and/or modify 4 it under the terms of the GNU General Public License, version 2.0, 5 as published by the Free Software Foundation. 6 7 This program is also distributed with certain software (including 8 but not limited to OpenSSL) that is licensed under separate terms, 9 as designated in a particular file or component or in included license 10 documentation. The authors of MySQL hereby grant you an additional 11 permission to link the program and your derivative works with the 12 separately licensed software that they have included with MySQL. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License, version 2.0, for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software Foundation, 21 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */ 22 23 #ifndef TABLE_MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME_H 24 #define TABLE_MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME_H 25 26 /** 27 @file storage/perfschema/table_mems_by_user_by_event_name.h 28 Table MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME (declarations). 29 */ 30 31 #include "pfs_column_types.h" 32 #include "pfs_engine_table.h" 33 #include "pfs_instr_class.h" 34 #include "pfs_user.h" 35 #include "table_helper.h" 36 37 /** 38 @addtogroup Performance_schema_tables 39 @{ 40 */ 41 42 /** A row of PERFORMANCE_SCHEMA.MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME. */ 43 struct row_mems_by_user_by_event_name 44 { 45 /** Column USER. */ 46 PFS_user_row m_user; 47 /** Column EVENT_NAME. */ 48 PFS_event_name_row m_event_name; 49 /** Columns COUNT_ALLOC, ... */ 50 PFS_memory_stat_row m_stat; 51 }; 52 53 /** 54 Position of a cursor on 55 PERFORMANCE_SCHEMA.EVENTS_MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME. 56 Index 1 on user (0 based) 57 Index 2 on memory class (1 based) 58 */ 59 struct pos_mems_by_user_by_event_name 60 : public PFS_double_index 61 { pos_mems_by_user_by_event_namepos_mems_by_user_by_event_name62 pos_mems_by_user_by_event_name() 63 : PFS_double_index(0, 1) 64 {} 65 resetpos_mems_by_user_by_event_name66 inline void reset(void) 67 { 68 m_index_1= 0; 69 m_index_2= 1; 70 } 71 next_userpos_mems_by_user_by_event_name72 inline void next_user(void) 73 { 74 m_index_1++; 75 m_index_2= 1; 76 } 77 next_classpos_mems_by_user_by_event_name78 inline void next_class(void) 79 { 80 m_index_2++; 81 } 82 }; 83 84 /** Table PERFORMANCE_SCHEMA.MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME. */ 85 class table_mems_by_user_by_event_name : public PFS_engine_table 86 { 87 public: 88 /** Table share */ 89 static PFS_engine_table_share m_share; 90 static PFS_engine_table* create(); 91 static int delete_all_rows(); 92 static ha_rows get_row_count(); 93 94 virtual int rnd_next(); 95 virtual int rnd_pos(const void *pos); 96 virtual void reset_position(void); 97 98 private: 99 virtual int read_row_values(TABLE *table, 100 unsigned char *buf, 101 Field **fields, 102 bool read_all); 103 104 table_mems_by_user_by_event_name(); 105 106 public: ~table_mems_by_user_by_event_name()107 ~table_mems_by_user_by_event_name() 108 {} 109 110 private: 111 void make_row(PFS_user *user, PFS_memory_class *klass); 112 113 /** Table share lock. */ 114 static THR_LOCK m_table_lock; 115 /** Fields definition. */ 116 static TABLE_FIELD_DEF m_field_def; 117 118 /** Current row. */ 119 row_mems_by_user_by_event_name m_row; 120 /** True is the current row exists. */ 121 bool m_row_exists; 122 /** Current position. */ 123 pos_mems_by_user_by_event_name m_pos; 124 /** Next position. */ 125 pos_mems_by_user_by_event_name m_next_pos; 126 }; 127 128 /** @} */ 129 #endif 130