MySQL 8.0.29
Source Code Documentation
table_mems_by_host_by_event_name.h
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22
23#ifndef TABLE_MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME_H
24#define TABLE_MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME_H
25
26/**
27 @file storage/perfschema/table_mems_by_host_by_event_name.h
28 Table MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME (declarations).
29*/
30
31#include <sys/types.h>
32
33#include "my_base.h"
36
37class Field;
38class Plugin_table;
39struct PFS_host;
40struct PFS_instr_class;
41struct PFS_memory_class;
42struct TABLE;
43struct THR_LOCK;
44
45/**
46 @addtogroup performance_schema_tables
47 @{
48*/
49
51 public:
54 m_key_1("HOST"),
55 m_key_2("EVENT_NAME") {}
56
58
59 virtual bool match(PFS_host *pfs);
60 virtual bool match(PFS_instr_class *instr_class);
61
62 private:
65};
66
67/** A row of PERFORMANCE_SCHEMA.MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME. */
69 /** Column HOST */
71 /** Column EVENT_NAME. */
73 /** Columns COUNT_ALLOC, ... */
75};
76
77/**
78 Position of a cursor on
79 PERFORMANCE_SCHEMA.EVENTS_MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME.
80 Index 1 on host (0 based)
81 Index 2 on memory class (1 based)
82*/
85
86 inline void reset(void) {
87 m_index_1 = 0;
88 m_index_2 = 1;
89 }
90
91 inline void next_host(void) {
92 m_index_1++;
93 m_index_2 = 1;
94 }
95
96 inline void next_class(void) { m_index_2++; }
97};
98
99/** Table PERFORMANCE_SCHEMA.MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME. */
101 public:
102 /** Table share */
105 static int delete_all_rows();
106 static ha_rows get_row_count();
107
108 void reset_position(void) override;
109
110 int rnd_next() override;
111 int rnd_pos(const void *pos) override;
112
113 int index_init(uint idx, bool sorted) override;
114 int index_next() override;
115
116 private:
117 int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
118 bool read_all) override;
119
121
122 public:
124
125 private:
127
128 /** Table share lock. */
130 /** Table definition. */
132
133 /** Current row. */
135 /** Current position. */
137 /** Next position. */
139
141};
142
143/** @} */
144#endif
Definition: field.h:573
Definition: pfs_engine_table.h:299
An abstract PERFORMANCE_SCHEMA table.
Definition: pfs_engine_table.h:69
Definition: table_mems_by_host_by_event_name.h:50
PFS_key_event_name m_key_2
Definition: table_mems_by_host_by_event_name.h:64
PFS_key_host m_key_1
Definition: table_mems_by_host_by_event_name.h:63
PFS_index_mems_by_host_by_event_name()
Definition: table_mems_by_host_by_event_name.h:52
~PFS_index_mems_by_host_by_event_name() override=default
virtual bool match(PFS_host *pfs)
Definition: table_mems_by_host_by_event_name.cc:86
Definition: table_helper.h:1431
Definition: table_helper.h:1458
Class to hold information regarding a table to be created on behalf of a plugin.
Definition: plugin_table.h:39
Table PERFORMANCE_SCHEMA.MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME.
Definition: table_mems_by_host_by_event_name.h:100
table_mems_by_host_by_event_name()
Definition: table_mems_by_host_by_event_name.cc:120
static ha_rows get_row_count()
Definition: table_mems_by_host_by_event_name.cc:116
int index_next() override
Find key in index, read record.
Definition: table_mems_by_host_by_event_name.cc:181
static THR_LOCK m_table_lock
Table share lock.
Definition: table_mems_by_host_by_event_name.h:129
pos_mems_by_host_by_event_name m_next_pos
Next position.
Definition: table_mems_by_host_by_event_name.h:138
pos_mems_by_host_by_event_name m_pos
Current position.
Definition: table_mems_by_host_by_event_name.h:136
PFS_index_mems_by_host_by_event_name * m_opened_index
Definition: table_mems_by_host_by_event_name.h:140
row_mems_by_host_by_event_name m_row
Current row.
Definition: table_mems_by_host_by_event_name.h:134
static PFS_engine_table * create(PFS_engine_table_share *)
Definition: table_mems_by_host_by_event_name.cc:104
static Plugin_table m_table_def
Table definition.
Definition: table_mems_by_host_by_event_name.h:131
int index_init(uint idx, bool sorted) override
Definition: table_mems_by_host_by_event_name.cc:171
~table_mems_by_host_by_event_name() override=default
static PFS_engine_table_share m_share
Table share.
Definition: table_mems_by_host_by_event_name.h:103
int rnd_pos(const void *pos) override
Fetch a row by position.
Definition: table_mems_by_host_by_event_name.cc:152
int make_row(PFS_host *host, PFS_memory_class *klass)
Definition: table_mems_by_host_by_event_name.cc:211
int read_row_values(TABLE *table, unsigned char *buf, Field **fields, bool read_all) override
Read the current row values.
Definition: table_mems_by_host_by_event_name.cc:239
void reset_position(void) override
Reset the cursor position to the beginning of the table.
Definition: table_mems_by_host_by_event_name.cc:123
static int delete_all_rows()
Definition: table_mems_by_host_by_event_name.cc:109
int rnd_next() override
Fetch the next row in this cursor.
Definition: table_mems_by_host_by_event_name.cc:128
char * pos
Definition: do_ctype.cc:76
This file includes constants used by all storage engines.
my_off_t ha_rows
Definition: my_base.h:1139
const char * host
Definition: mysqladmin.cc:58
Definition: buf0block_hint.cc:29
Performance schema tables (declarations).
static const LEX_CSTRING pfs
Definition: sql_show_processlist.cc:65
Position of a double cursor, for iterations using 2 nested loops.
Definition: pfs_engine_table.h:593
uint m_index_1
Outer index.
Definition: pfs_engine_table.h:595
uint m_index_2
Current index within index_1.
Definition: pfs_engine_table.h:597
A PERFORMANCE_SCHEMA table share.
Definition: pfs_engine_table.h:357
Row fragment for column EVENT_NAME.
Definition: table_helper.h:596
Row fragment for column HOST.
Definition: table_helper.h:541
Per host statistics.
Definition: pfs_host.h:62
Information for all instrumentation.
Definition: pfs_instr_class.h:204
Instrumentation metadata for a memory.
Definition: pfs_instr_class.h:555
Row fragment for memory statistics columns.
Definition: table_helper.h:1076
Definition: table.h:1394
Definition: thr_lock.h:138
Position of a cursor on PERFORMANCE_SCHEMA.EVENTS_MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME.
Definition: table_mems_by_host_by_event_name.h:83
void reset(void)
Definition: table_mems_by_host_by_event_name.h:86
pos_mems_by_host_by_event_name()
Definition: table_mems_by_host_by_event_name.h:84
void next_host(void)
Definition: table_mems_by_host_by_event_name.h:91
void next_class(void)
Definition: table_mems_by_host_by_event_name.h:96
A row of PERFORMANCE_SCHEMA.MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME.
Definition: table_mems_by_host_by_event_name.h:68
PFS_host_row m_host
Column HOST.
Definition: table_mems_by_host_by_event_name.h:70
PFS_memory_stat_row m_stat
Columns COUNT_ALLOC, ...
Definition: table_mems_by_host_by_event_name.h:74
PFS_event_name_row m_event_name
Column EVENT_NAME.
Definition: table_mems_by_host_by_event_name.h:72
Helpers to implement a performance schema table.
unsigned int uint
Definition: uca-dump.cc:29