1 /* Copyright (c) 2010, 2021, 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 /**
24 @file storage/perfschema/table_esgs_by_thread_by_event_name.cc
25 Table EVENTS_STAGES_SUMMARY_BY_HOST_BY_EVENT_NAME (implementation).
26 */
27
28 #include "my_global.h"
29 #include "my_thread.h"
30 #include "pfs_instr_class.h"
31 #include "pfs_column_types.h"
32 #include "pfs_column_values.h"
33 #include "table_esgs_by_thread_by_event_name.h"
34 #include "pfs_global.h"
35 #include "pfs_visitor.h"
36 #include "pfs_buffer_container.h"
37 #include "field.h"
38
39 THR_LOCK table_esgs_by_thread_by_event_name::m_table_lock;
40
41 static const TABLE_FIELD_TYPE field_types[]=
42 {
43 {
44 { C_STRING_WITH_LEN("THREAD_ID") },
45 { C_STRING_WITH_LEN("bigint(20)") },
46 { NULL, 0}
47 },
48 {
49 { C_STRING_WITH_LEN("EVENT_NAME") },
50 { C_STRING_WITH_LEN("varchar(128)") },
51 { NULL, 0}
52 },
53 {
54 { C_STRING_WITH_LEN("COUNT_STAR") },
55 { C_STRING_WITH_LEN("bigint(20)") },
56 { NULL, 0}
57 },
58 {
59 { C_STRING_WITH_LEN("SUM_TIMER_WAIT") },
60 { C_STRING_WITH_LEN("bigint(20)") },
61 { NULL, 0}
62 },
63 {
64 { C_STRING_WITH_LEN("MIN_TIMER_WAIT") },
65 { C_STRING_WITH_LEN("bigint(20)") },
66 { NULL, 0}
67 },
68 {
69 { C_STRING_WITH_LEN("AVG_TIMER_WAIT") },
70 { C_STRING_WITH_LEN("bigint(20)") },
71 { NULL, 0}
72 },
73 {
74 { C_STRING_WITH_LEN("MAX_TIMER_WAIT") },
75 { C_STRING_WITH_LEN("bigint(20)") },
76 { NULL, 0}
77 }
78 };
79
80 TABLE_FIELD_DEF
81 table_esgs_by_thread_by_event_name::m_field_def=
82 { 7, field_types };
83
84 PFS_engine_table_share
85 table_esgs_by_thread_by_event_name::m_share=
86 {
87 { C_STRING_WITH_LEN("events_stages_summary_by_thread_by_event_name") },
88 &pfs_truncatable_acl,
89 table_esgs_by_thread_by_event_name::create,
90 NULL, /* write_row */
91 table_esgs_by_thread_by_event_name::delete_all_rows,
92 table_esgs_by_thread_by_event_name::get_row_count,
93 sizeof(pos_esgs_by_thread_by_event_name),
94 &m_table_lock,
95 &m_field_def,
96 false, /* checked */
97 false /* perpetual */
98 };
99
100 PFS_engine_table*
create(void)101 table_esgs_by_thread_by_event_name::create(void)
102 {
103 return new table_esgs_by_thread_by_event_name();
104 }
105
106 int
delete_all_rows(void)107 table_esgs_by_thread_by_event_name::delete_all_rows(void)
108 {
109 reset_events_stages_by_thread();
110 return 0;
111 }
112
113 ha_rows
get_row_count(void)114 table_esgs_by_thread_by_event_name::get_row_count(void)
115 {
116 return global_thread_container.get_row_count() * stage_class_max;
117 }
118
table_esgs_by_thread_by_event_name()119 table_esgs_by_thread_by_event_name::table_esgs_by_thread_by_event_name()
120 : PFS_engine_table(&m_share, &m_pos),
121 m_row_exists(false), m_pos(), m_next_pos()
122 {}
123
reset_position(void)124 void table_esgs_by_thread_by_event_name::reset_position(void)
125 {
126 m_pos.reset();
127 m_next_pos.reset();
128 }
129
rnd_init(bool scan)130 int table_esgs_by_thread_by_event_name::rnd_init(bool scan)
131 {
132 m_normalizer= time_normalizer::get(stage_timer);
133 return 0;
134 }
135
rnd_next(void)136 int table_esgs_by_thread_by_event_name::rnd_next(void)
137 {
138 PFS_thread *thread;
139 PFS_stage_class *stage_class;
140 bool has_more_thread= true;
141
142 for (m_pos.set_at(&m_next_pos);
143 has_more_thread;
144 m_pos.next_thread())
145 {
146 thread= global_thread_container.get(m_pos.m_index_1, & has_more_thread);
147 if (thread != NULL)
148 {
149 stage_class= find_stage_class(m_pos.m_index_2);
150 if (stage_class)
151 {
152 make_row(thread, stage_class);
153 m_next_pos.set_after(&m_pos);
154 return 0;
155 }
156 }
157 }
158
159 return HA_ERR_END_OF_FILE;
160 }
161
162 int
rnd_pos(const void * pos)163 table_esgs_by_thread_by_event_name::rnd_pos(const void *pos)
164 {
165 PFS_thread *thread;
166 PFS_stage_class *stage_class;
167
168 set_position(pos);
169
170 thread= global_thread_container.get(m_pos.m_index_1);
171 if (thread != NULL)
172 {
173 stage_class= find_stage_class(m_pos.m_index_2);
174 if (stage_class)
175 {
176 make_row(thread, stage_class);
177 return 0;
178 }
179 }
180
181 return HA_ERR_RECORD_DELETED;
182 }
183
184 void table_esgs_by_thread_by_event_name
make_row(PFS_thread * thread,PFS_stage_class * klass)185 ::make_row(PFS_thread *thread, PFS_stage_class *klass)
186 {
187 pfs_optimistic_state lock;
188 m_row_exists= false;
189
190 /* Protect this reader against a thread termination */
191 thread->m_lock.begin_optimistic_lock(&lock);
192
193 m_row.m_thread_internal_id= thread->m_thread_internal_id;
194
195 m_row.m_event_name.make_row(klass);
196
197 PFS_connection_stage_visitor visitor(klass);
198 PFS_connection_iterator::visit_thread(thread, & visitor);
199
200 if (thread->m_lock.end_optimistic_lock(&lock))
201 m_row_exists= true;
202
203 m_row.m_stat.set(m_normalizer, & visitor.m_stat);
204 }
205
206 int table_esgs_by_thread_by_event_name
read_row_values(TABLE * table,unsigned char *,Field ** fields,bool read_all)207 ::read_row_values(TABLE *table, unsigned char *, Field **fields,
208 bool read_all)
209 {
210 Field *f;
211
212 if (unlikely(! m_row_exists))
213 return HA_ERR_RECORD_DELETED;
214
215 /* Set the null bits */
216 assert(table->s->null_bytes == 0);
217
218 for (; (f= *fields) ; fields++)
219 {
220 if (read_all || bitmap_is_set(table->read_set, f->field_index))
221 {
222 switch(f->field_index)
223 {
224 case 0: /* THREAD_ID */
225 set_field_ulonglong(f, m_row.m_thread_internal_id);
226 break;
227 case 1: /* NAME */
228 m_row.m_event_name.set_field(f);
229 break;
230 default: /* 2, ... COUNT/SUM/MIN/AVG/MAX */
231 m_row.m_stat.set_field(f->field_index - 2, f);
232 break;
233 }
234 }
235 }
236
237 return 0;
238 }
239
240