1 /* Copyright (c) 2010, 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 21 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ 22 23 #ifndef TABLE_EWS_BY_HOST_BY_EVENT_NAME_H 24 #define TABLE_EWS_BY_HOST_BY_EVENT_NAME_H 25 26 /** 27 @file storage/perfschema/table_ews_by_host_by_event_name.h 28 Table EVENTS_WAITS_SUMMARY_BY_HOST_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_instr.h" 35 #include "pfs_host.h" 36 #include "table_helper.h" 37 38 /** 39 @addtogroup Performance_schema_tables 40 @{ 41 */ 42 43 /** 44 A row of table 45 PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME. 46 */ 47 struct row_ews_by_host_by_event_name 48 { 49 /** Column HOST. */ 50 PFS_host_row m_host; 51 /** Column EVENT_NAME. */ 52 PFS_event_name_row m_event_name; 53 /** Columns COUNT_STAR, SUM/MIN/AVG/MAX TIMER_WAIT. */ 54 PFS_stat_row m_stat; 55 }; 56 57 /** 58 Position of a cursor on 59 PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME. 60 Index 1 on host (0 based) 61 Index 2 on instrument view 62 Index 3 on instrument class (1 based) 63 */ 64 struct pos_ews_by_host_by_event_name 65 : public PFS_triple_index, public PFS_instrument_view_constants 66 { pos_ews_by_host_by_event_namepos_ews_by_host_by_event_name67 pos_ews_by_host_by_event_name() 68 : PFS_triple_index(0, FIRST_VIEW, 1) 69 {} 70 resetpos_ews_by_host_by_event_name71 inline void reset(void) 72 { 73 m_index_1= 0; 74 m_index_2= FIRST_VIEW; 75 m_index_3= 1; 76 } 77 next_hostpos_ews_by_host_by_event_name78 inline void next_host(void) 79 { 80 m_index_1++; 81 m_index_2= FIRST_VIEW; 82 m_index_3= 1; 83 } 84 has_more_viewpos_ews_by_host_by_event_name85 inline bool has_more_view(void) 86 { return (m_index_2 <= LAST_VIEW); } 87 next_viewpos_ews_by_host_by_event_name88 inline void next_view(void) 89 { 90 m_index_2++; 91 m_index_3= 1; 92 } 93 }; 94 95 /** Table PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME. */ 96 class table_ews_by_host_by_event_name : public PFS_engine_table 97 { 98 public: 99 /** Table share */ 100 static PFS_engine_table_share m_share; 101 static PFS_engine_table* create(); 102 static int delete_all_rows(); 103 static ha_rows get_row_count(); 104 105 virtual int rnd_next(); 106 virtual int rnd_pos(const void *pos); 107 virtual void reset_position(void); 108 109 protected: 110 virtual int read_row_values(TABLE *table, 111 unsigned char *buf, 112 Field **fields, 113 bool read_all); 114 115 table_ews_by_host_by_event_name(); 116 117 public: ~table_ews_by_host_by_event_name()118 ~table_ews_by_host_by_event_name() 119 {} 120 121 protected: 122 void make_row(PFS_host *host, PFS_instr_class *klass); 123 124 private: 125 /** Table share lock. */ 126 static THR_LOCK m_table_lock; 127 /** Fields definition. */ 128 static TABLE_FIELD_DEF m_field_def; 129 130 /** Current row. */ 131 row_ews_by_host_by_event_name m_row; 132 /** True is the current row exists. */ 133 bool m_row_exists; 134 /** Current position. */ 135 pos_ews_by_host_by_event_name m_pos; 136 /** Next position. */ 137 pos_ews_by_host_by_event_name m_next_pos; 138 }; 139 140 /** @} */ 141 #endif 142