MySQL 8.0.29
Source Code Documentation
pfs_con_slice.h
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21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22
23#ifndef PFS_CON_SLICE_H
24#define PFS_CON_SLICE_H
25
26/**
27 @file storage/perfschema/pfs_con_slice.h
28 Performance schema connection slice (declarations).
29*/
30
31#include <stddef.h>
32
33#include "lf.h"
36
37struct PFS_single_stat;
38struct PFS_stage_stat;
41struct PFS_error_stat;
42class PFS_opaque_container_page;
43
44/**
45 @addtogroup performance_schema_buffers
46 @{
47*/
48
49/**
50 A connection slice, an arbitrary grouping of several connections.
51 This structure holds statistics for grouping of connections.
52*/
54 /** Reset all statistics. */
55 inline void reset_stats() {
56 m_has_waits_stats = false;
57 m_has_stages_stats = false;
60 m_has_errors_stats = false;
61 m_has_memory_stats = false;
63 }
64
65 /** Reset all wait statistics. */
66 void reset_waits_stats();
67 /** Reset all stages statistics. */
68 void reset_stages_stats();
69 /** Reset all statements statistics. */
71 /** Reset all transactions statistics. */
73 /** Reset all errors statistics. */
74 void reset_errors_stats();
75 /** Reset all status variable statistics. */
77
79 m_has_waits_stats = false;
81 }
82
84 if (!m_has_waits_stats) {
85 return nullptr;
86 }
88 }
89
91 if (!m_has_waits_stats) {
93 m_has_waits_stats = true;
94 }
96 }
97
99 m_has_stages_stats = false;
101 }
102
104 if (!m_has_stages_stats) {
105 return nullptr;
106 }
108 }
109
111 if (!m_has_stages_stats) {
113 m_has_stages_stats = true;
114 }
116 }
117
121 }
122
125 return nullptr;
126 }
128 }
129
134 }
136 }
137
141 }
142
145 return nullptr;
146 }
148 }
149
154 }
156 }
157
159 m_has_errors_stats = false;
161 }
162
164 if (!m_has_errors_stats) {
165 return nullptr;
166 }
168 }
169
171 if (!m_has_errors_stats) {
173 m_has_errors_stats = true;
174 }
176 }
177
178 protected:
180
181 private:
187
188 /**
189 Per connection slice waits aggregated statistics.
190 This member holds the data for the table
191 PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_*_BY_EVENT_NAME.
192 Immutable, safe to use without internal lock.
193 */
195
196 /**
197 Per connection slice stages aggregated statistics.
198 This member holds the data for the table
199 PERFORMANCE_SCHEMA.EVENTS_STAGES_SUMMARY_BY_*_BY_EVENT_NAME.
200 Immutable, safe to use without internal lock.
201 */
203
204 /**
205 Per connection slice statements aggregated statistics.
206 This member holds the data for the table
207 PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_SUMMARY_BY_*_BY_EVENT_NAME.
208 Immutable, safe to use without internal lock.
209 */
211
212 /**
213 Per connection slice transactions aggregated statistics.
214 This member holds the data for the table
215 PERFORMANCE_SCHEMA.EVENTS_TRANSACTIONS_SUMMARY_BY_*_BY_EVENT_NAME.
216 Immutable, safe to use without internal lock.
217 */
219
220 /**
221 Per connection slice error aggregated statistics.
222 This member holds the data for the table
223 PERFORMANCE_SCHEMA.EVENTS_ERRORS_SUMMARY_BY_*_BY_ERROR.
224 Immutable, safe to use without internal lock.
225 */
227
228 public:
231 }
232
233 /**
234 Aggregated status variables.
235 */
237
238 /** Container page. */
239 PFS_opaque_container_page *m_page;
240};
241
242/** @} */
243#endif
void reset_stages_stats()
Reset all stages statistics.
Definition: pfs_con_slice.cc:48
void reset_errors_stats()
Reset all errors statistics.
Definition: pfs_con_slice.cc:72
void reset_statements_stats()
Reset all statements statistics.
Definition: pfs_con_slice.cc:56
void reset_waits_stats()
Reset all wait statistics.
Definition: pfs_con_slice.cc:40
void reset_transactions_stats()
Reset all transactions statistics.
Definition: pfs_con_slice.cc:64
SHOW_VAR status_vars[]
Definition: mysqld.cc:9410
Performance schema internal locks (declarations).
Status variables statistics (declarations).
A connection slice, an arbitrary grouping of several connections.
Definition: pfs_con_slice.h:53
bool m_has_memory_stats
Definition: pfs_con_slice.h:179
PFS_error_stat * m_instr_class_errors_stats
Per connection slice error aggregated statistics.
Definition: pfs_con_slice.h:226
bool m_has_stages_stats
Definition: pfs_con_slice.h:183
PFS_single_stat * write_instr_class_waits_stats()
Definition: pfs_con_slice.h:90
const PFS_error_stat * read_instr_class_errors_stats() const
Definition: pfs_con_slice.h:163
void aggregate_status_stats(const System_status_var *status_vars)
Definition: pfs_con_slice.h:229
PFS_single_stat * m_instr_class_waits_stats
Per connection slice waits aggregated statistics.
Definition: pfs_con_slice.h:194
bool m_has_transactions_stats
Definition: pfs_con_slice.h:185
const PFS_single_stat * read_instr_class_waits_stats() const
Definition: pfs_con_slice.h:83
const PFS_transaction_stat * read_instr_class_transactions_stats() const
Definition: pfs_con_slice.h:143
void set_instr_class_waits_stats(PFS_single_stat *array)
Definition: pfs_con_slice.h:78
PFS_error_stat * write_instr_class_errors_stats()
Definition: pfs_con_slice.h:170
void set_instr_class_stages_stats(PFS_stage_stat *array)
Definition: pfs_con_slice.h:98
void reset_status_stats()
Reset all status variable statistics.
Definition: pfs_con_slice.h:76
void set_instr_class_statements_stats(PFS_statement_stat *array)
Definition: pfs_con_slice.h:118
PFS_transaction_stat * m_instr_class_transactions_stats
Per connection slice transactions aggregated statistics.
Definition: pfs_con_slice.h:218
PFS_stage_stat * m_instr_class_stages_stats
Per connection slice stages aggregated statistics.
Definition: pfs_con_slice.h:202
PFS_opaque_container_page * m_page
Container page.
Definition: pfs_con_slice.h:239
PFS_statement_stat * m_instr_class_statements_stats
Per connection slice statements aggregated statistics.
Definition: pfs_con_slice.h:210
const PFS_statement_stat * read_instr_class_statements_stats() const
Definition: pfs_con_slice.h:123
bool m_has_waits_stats
Definition: pfs_con_slice.h:182
PFS_status_stats m_status_stats
Aggregated status variables.
Definition: pfs_con_slice.h:236
PFS_transaction_stat * write_instr_class_transactions_stats()
Definition: pfs_con_slice.h:150
bool m_has_errors_stats
Definition: pfs_con_slice.h:186
void set_instr_class_errors_stats(PFS_error_stat *array)
Definition: pfs_con_slice.h:158
const PFS_stage_stat * read_instr_class_stages_stats() const
Definition: pfs_con_slice.h:103
bool m_has_statements_stats
Definition: pfs_con_slice.h:184
PFS_stage_stat * write_instr_class_stages_stats()
Definition: pfs_con_slice.h:110
void reset_stats()
Reset all statistics.
Definition: pfs_con_slice.h:55
void set_instr_class_transactions_stats(PFS_transaction_stat *array)
Definition: pfs_con_slice.h:138
PFS_statement_stat * write_instr_class_statements_stats()
Definition: pfs_con_slice.h:130
Statistics for all server errors.
Definition: pfs_stat.h:539
Single statistic.
Definition: pfs_stat.h:51
Statistics for stage usage.
Definition: pfs_stat.h:322
Statistics for statement usage.
Definition: pfs_stat.h:375
Definition: pfs_status.h:34
void aggregate_from(const System_status_var *from)
Definition: pfs_status.cc:59
void reset()
Definition: pfs_status.cc:45
Statistics for transaction usage.
Definition: pfs_stat.h:441
Per thread status variables.
Definition: system_variables.h:467