MySQL 8.0.29
Source Code Documentation
table_all_instr.h
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22
23#ifndef TABLE_ALL_INSTR_H
24#define TABLE_ALL_INSTR_H
25
26/**
27 @file storage/perfschema/table_all_instr.h
28 Abstract tables for all instruments (declarations).
29*/
30
31#include <sys/types.h>
32
33#include "my_compiler.h"
38
39/**
40 @addtogroup performance_schema_tables
41 @{
42*/
43
44/** Position of a cursor on table_all_instr. */
48
49 inline void reset(void) {
51 m_index_2 = 0;
52 }
53
54 inline bool has_more_view(void) { return (m_index_1 <= LAST_VIEW); }
55
56 inline void next_view(void) {
57 m_index_1++;
58 m_index_2 = 0;
59 }
60};
61
63 public:
65 : PFS_engine_index(key_1) {}
66
67 ~PFS_index_all_instr() override = default;
68
69 virtual bool match(PFS_mutex *) { return false; }
70 virtual bool match(PFS_rwlock *) { return false; }
71 virtual bool match(PFS_cond *) { return false; }
72 virtual bool match(PFS_file *) { return false; }
73 virtual bool match(PFS_socket *) { return false; }
74 /* All views match by default. */
75 virtual bool match_view(uint view [[maybe_unused]]) { return true; }
76};
77
78/**
79 Abstract table, a union of all instrumentations instances.
80 This table is a union of:
81 - a view on all mutex instances,
82 - a view on all rwlock instances,
83 - a view on all cond instances,
84 - a view on all file instances,
85 - a view on all socket instances
86*/
88 public:
89 static ha_rows get_row_count();
90
91 int index_init(uint, bool) override { return 0; }
92 int rnd_next() override;
93 int rnd_pos(const void *pos) override;
94 void reset_position(void) override;
95 int index_next(void) override;
96
97 protected:
98 explicit table_all_instr(const PFS_engine_table_share *share);
99
100 public:
101 ~table_all_instr() override = default;
102
103 protected:
104 /**
105 Build a row in the mutex instance view.
106 @param pfs the mutex instance
107 */
108 virtual int make_mutex_row(PFS_mutex *pfs) = 0;
109 /**
110 Build a row in the rwlock instance view.
111 @param pfs the rwlock instance
112 */
113 virtual int make_rwlock_row(PFS_rwlock *pfs) = 0;
114 /**
115 Build a row in the condition instance view.
116 @param pfs the condition instance
117 */
118 virtual int make_cond_row(PFS_cond *pfs) = 0;
119 /**
120 Build a row in the file instance view.
121 @param pfs the file instance
122 */
123 virtual int make_file_row(PFS_file *pfs) = 0;
124 /**
125 Build a row in the socket instance view.
126 @param pfs the socket instance
127 */
128 virtual int make_socket_row(PFS_socket *pfs) = 0;
129
130 /** Current position. */
132 /** Next position. */
134
136};
137
138/** @} */
139#endif
Definition: pfs_engine_table.h:299
Definition: pfs_engine_table.h:267
An abstract PERFORMANCE_SCHEMA table.
Definition: pfs_engine_table.h:69
Definition: table_all_instr.h:62
~PFS_index_all_instr() override=default
virtual bool match(PFS_file *)
Definition: table_all_instr.h:72
virtual bool match(PFS_mutex *)
Definition: table_all_instr.h:69
PFS_index_all_instr(PFS_engine_key *key_1)
Definition: table_all_instr.h:64
virtual bool match(PFS_socket *)
Definition: table_all_instr.h:73
virtual bool match(PFS_cond *)
Definition: table_all_instr.h:71
virtual bool match_view(uint view)
Definition: table_all_instr.h:75
virtual bool match(PFS_rwlock *)
Definition: table_all_instr.h:70
Abstract table, a union of all instrumentations instances.
Definition: table_all_instr.h:87
virtual int make_file_row(PFS_file *pfs)=0
Build a row in the file instance view.
void reset_position(void) override
Reset the cursor position to the beginning of the table.
Definition: table_all_instr.cc:47
virtual int make_mutex_row(PFS_mutex *pfs)=0
Build a row in the mutex instance view.
int rnd_pos(const void *pos) override
Fetch a row by position.
Definition: table_all_instr.cc:109
pos_all_instr m_next_pos
Next position.
Definition: table_all_instr.h:133
static ha_rows get_row_count()
Definition: table_all_instr.cc:36
virtual int make_socket_row(PFS_socket *pfs)=0
Build a row in the socket instance view.
int index_next(void) override
Find key in index, read record.
Definition: table_all_instr.cc:154
table_all_instr(const PFS_engine_table_share *share)
Definition: table_all_instr.cc:44
virtual int make_cond_row(PFS_cond *pfs)=0
Build a row in the condition instance view.
pos_all_instr m_pos
Current position.
Definition: table_all_instr.h:131
virtual int make_rwlock_row(PFS_rwlock *pfs)=0
Build a row in the rwlock instance view.
int rnd_next() override
Fetch the next row in this cursor.
Definition: table_all_instr.cc:52
int index_init(uint, bool) override
Definition: table_all_instr.h:91
~table_all_instr() override=default
PFS_index_all_instr * m_opened_index
Definition: table_all_instr.h:135
char * pos
Definition: do_ctype.cc:76
my_off_t ha_rows
Definition: my_base.h:1139
Header for compiler-dependent features.
Performance schema tables (declarations).
Performance schema instruments (declarations).
Performance schema instruments metadata (declarations).
static const LEX_CSTRING pfs
Definition: sql_show_processlist.cc:65
Instrumented condition implementation.
Definition: pfs_instr.h:159
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
Instrumented File and FILE implementation.
Definition: pfs_instr.h:176
Name space, internal views used within table setup_instruments.
Definition: table_helper.h:503
static const uint LAST_VIEW
Definition: table_helper.h:515
static const uint FIRST_VIEW
Definition: table_helper.h:506
Instrumented mutex implementation.
Definition: pfs_instr.h:100
Instrumented rwlock implementation.
Definition: pfs_instr.h:126
Instrumented socket implementation.
Definition: pfs_instr.h:286
Position of a cursor on table_all_instr.
Definition: table_all_instr.h:46
bool has_more_view(void)
Definition: table_all_instr.h:54
pos_all_instr()
Definition: table_all_instr.h:47
void next_view(void)
Definition: table_all_instr.h:56
void reset(void)
Definition: table_all_instr.h:49
Helpers to implement a performance schema table.
unsigned int uint
Definition: uca-dump.cc:29