MySQL 8.0.31
Source Code Documentation
table_esmh_global.h
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23
24#ifndef TABLE_ESMH_GLOBAL_H
25#define TABLE_ESMH_GLOBAL_H
26
27/**
28 @file storage/perfschema/table_esmh_global.h
29 Table EVENTS_STATEMENTS_HISTOGRAM_GLOBAL (declarations).
30*/
31
33
34/**
35 @addtogroup performance_schema_tables
36 @{
37*/
38
40 public:
42 : PFS_engine_index(&m_key_1), m_key_1("BUCKET_NUMBER") {}
43
44 ~PFS_index_esmh_global() override = default;
45
46 bool match_bucket(ulong bucket_index);
47
48 private:
50};
51
52/**
53 A row of table
54 PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_HISTOGRAM_GLOBAL.
55*/
56
58 /** Column BUCKET_NUMBER. */
60 /** Column COUNT_BUCKET_AND_LOWER. */
62};
63
65 /** Statistics for all buckets. */
67};
68
70 /** Column BUCKET_NUMBER. */
72 /** Column BUCKET_TIMER_LOW. */
74 /** Column BUCKET_TIMER_HIGH. */
76 /** Column COUNT_BUCKET. */
78 /** Column COUNT_BUCKET_AND_LOWER. */
80 /** Column BUCKET_QUANTILE. */
82};
83
84/** Table PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_HISTOGRAM_GLOBAL. */
87
88 public:
89 /** Table share */
92 static int delete_all_rows();
93 static ha_rows get_row_count();
94
95 void reset_position(void) override;
96
97 int rnd_next() override;
98 int rnd_pos(const void *pos) override;
99
100 int index_init(uint idx, bool sorted) override;
101 int index_next() override;
102
103 protected:
104 int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
105 bool read_all) override;
106
108
109 public:
110 ~table_esmh_global() override = default;
111
112 protected:
113 void materialize();
114 int make_row(ulong bucket_index);
115
116 private:
117 /** Table share lock. */
119 /** Table definition. */
121
122 /** Current row. */
125 /** Current position. */
127 /** Next position. */
129
131
133};
134
135/** @} */
136#endif
Definition: field.h:574
Definition: pfs_engine_table.h:299
An abstract PERFORMANCE_SCHEMA table.
Definition: pfs_engine_table.h:69
Definition: table_esmh_global.h:39
bool match_bucket(ulong bucket_index)
Definition: table_esmh_global.cc:79
~PFS_index_esmh_global() override=default
PFS_key_bucket_number m_key_1
Definition: table_esmh_global.h:49
PFS_index_esmh_global()
Definition: table_esmh_global.h:41
Definition: table_helper.h:1498
Class to hold information regarding a table to be created on behalf of a plugin.
Definition: plugin_table.h:39
Table PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_HISTOGRAM_GLOBAL.
Definition: table_esmh_global.h:85
int make_row(ulong bucket_index)
Definition: table_esmh_global.cc:176
static THR_LOCK m_table_lock
Table share lock.
Definition: table_esmh_global.h:118
PFS_index_esmh_global * m_opened_index
Definition: table_esmh_global.h:130
static PFS_engine_table_share m_share
Table share.
Definition: table_esmh_global.h:90
void reset_position(void) override
Reset the cursor position to the beginning of the table.
Definition: table_esmh_global.cc:106
static PFS_engine_table * create(PFS_engine_table_share *)
Definition: table_esmh_global.cc:87
int rnd_next() override
Fetch the next row in this cursor.
Definition: table_esmh_global.cc:111
void materialize()
Definition: table_esmh_global.cc:154
table_esmh_global()
Definition: table_esmh_global.cc:100
PFS_simple_index pos_t
Definition: table_esmh_global.h:86
~table_esmh_global() override=default
static Plugin_table m_table_def
Table definition.
Definition: table_esmh_global.h:120
static ha_rows get_row_count()
Definition: table_esmh_global.cc:98
bool m_materialized
Definition: table_esmh_global.h:132
int index_init(uint idx, bool sorted) override
Definition: table_esmh_global.cc:132
int read_row_values(TABLE *table, unsigned char *buf, Field **fields, bool read_all) override
Read the current row values.
Definition: table_esmh_global.cc:206
pos_t m_next_pos
Next position.
Definition: table_esmh_global.h:128
int rnd_pos(const void *pos) override
Fetch a row by position.
Definition: table_esmh_global.cc:122
row_esmh_global m_row
Definition: table_esmh_global.h:124
pos_t m_pos
Current position.
Definition: table_esmh_global.h:126
int index_next() override
Find key in index, read record.
Definition: table_esmh_global.cc:141
PFS_esmh_global_histogram m_materialized_histogram
Current row.
Definition: table_esmh_global.h:123
static int delete_all_rows()
Definition: table_esmh_global.cc:93
char * pos
Definition: do_ctype.cc:76
my_off_t ha_rows
Definition: my_base.h:1139
unsigned long long int ulonglong
Definition: my_inttypes.h:55
Definition: buf0block_hint.cc:29
#define NUMBER_OF_BUCKETS
Number of buckets used in histograms.
Definition: pfs_histogram.h:35
A PERFORMANCE_SCHEMA table share.
Definition: pfs_engine_table.h:357
A row of table PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_HISTOGRAM_GLOBAL.
Definition: table_esmh_global.h:57
ulonglong m_count_bucket_and_lower
Column COUNT_BUCKET_AND_LOWER.
Definition: table_esmh_global.h:61
ulonglong m_count_bucket
Column BUCKET_NUMBER.
Definition: table_esmh_global.h:59
Definition: table_esmh_global.h:64
PFS_esmh_global_bucket m_buckets[NUMBER_OF_BUCKETS]
Statistics for all buckets.
Definition: table_esmh_global.h:66
Position of a cursor, for simple iterations.
Definition: pfs_engine_table.h:558
Definition: table.h:1396
Definition: thr_lock.h:138
Definition: table_esmh_global.h:69
ulonglong m_bucket_timer_low
Column BUCKET_TIMER_LOW.
Definition: table_esmh_global.h:73
ulonglong m_count_bucket
Column COUNT_BUCKET.
Definition: table_esmh_global.h:77
ulong m_bucket_number
Column BUCKET_NUMBER.
Definition: table_esmh_global.h:71
ulonglong m_bucket_timer_high
Column BUCKET_TIMER_HIGH.
Definition: table_esmh_global.h:75
double m_percentile
Column BUCKET_QUANTILE.
Definition: table_esmh_global.h:81
ulonglong m_count_bucket_and_lower
Column COUNT_BUCKET_AND_LOWER.
Definition: table_esmh_global.h:79
Helpers to implement a performance schema table.
unsigned int uint
Definition: uca-dump.cc:29