MySQL 8.1.0
Source Code Documentation
table_mems_by_host_by_event_name.h
Go to the documentation of this file.
1/* Copyright (c) 2011, 2023, 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 St, Fifth Floor, Boston, MA 02110-1301 USA */
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() {
87 m_index_1 = 0;
88 m_index_2 = 1;
89 }
90
91 inline void next_host() {
92 m_index_1++;
93 m_index_2 = 1;
94 }
95
96 inline void next_class() { 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() 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:575
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
void reset_position() override
Reset the cursor position to the beginning of the table.
Definition: table_mems_by_host_by_event_name.cc:123
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
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
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:63
static PFS_engine_table_share_proxy table
Definition: pfs.cc:60
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:592
uint m_index_1
Outer index.
Definition: pfs_engine_table.h:594
uint m_index_2
Current index within index_1.
Definition: pfs_engine_table.h:596
A PERFORMANCE_SCHEMA table share.
Definition: pfs_engine_table.h:357
Row fragment for column EVENT_NAME.
Definition: table_helper.h:582
Row fragment for column HOST.
Definition: table_helper.h:527
Per host statistics.
Definition: pfs_host.h:63
Information for all instrumentation.
Definition: pfs_instr_class.h:204
Instrumentation metadata for a memory.
Definition: pfs_instr_class.h:572
Row fragment for memory statistics columns.
Definition: table_helper.h:1064
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
pos_mems_by_host_by_event_name()
Definition: table_mems_by_host_by_event_name.h:84
void next_class()
Definition: table_mems_by_host_by_event_name.h:96
void reset()
Definition: table_mems_by_host_by_event_name.h:86
void next_host()
Definition: table_mems_by_host_by_event_name.h:91
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.