1 /* Copyright (c) 2008, 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 Foundation,
21   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
22 
23 #ifndef TABLE_EVENTS_WAITS_H
24 #define TABLE_EVENTS_WAITS_H
25 
26 /**
27   @file storage/perfschema/table_events_waits.h
28   Table EVENTS_WAITS_xxx (declarations).
29 */
30 
31 #include "pfs_column_types.h"
32 #include "pfs_engine_table.h"
33 #include "pfs_events_waits.h"
34 
35 struct PFS_thread;
36 
37 /**
38   @addtogroup Performance_schema_tables
39   @{
40 */
41 
42 /** A row of table_events_waits_common. */
43 struct row_events_waits
44 {
45   /** Column THREAD_ID. */
46   ulonglong m_thread_internal_id;
47   /** Column EVENT_ID. */
48   ulonglong m_event_id;
49   /** Column END_EVENT_ID. */
50   ulonglong m_end_event_id;
51   /** Column NESTING_EVENT_ID. */
52   ulonglong m_nesting_event_id;
53   /** Column NESTING_EVENT_TYPE. */
54   enum_event_type m_nesting_event_type;
55   /** Column EVENT_NAME. */
56   const char *m_name;
57   /** Length in bytes of @c m_name. */
58   uint m_name_length;
59   /** Column TIMER_START. */
60   ulonglong m_timer_start;
61   /** Column TIMER_END. */
62   ulonglong m_timer_end;
63   /** Column TIMER_WAIT. */
64   ulonglong m_timer_wait;
65   /** Column OBJECT_TYPE. */
66   const char *m_object_type;
67   /** Length in bytes of @c m_object_type. */
68   uint m_object_type_length;
69   /** Column OBJECT_SCHEMA. */
70   char m_object_schema[COL_OBJECT_SCHEMA_SIZE];
71   /** Length in bytes of @c m_object_schema. */
72   uint m_object_schema_length;
73   /** Column OBJECT_NAME. */
74   char m_object_name[COL_OBJECT_NAME_EXTENDED_SIZE];
75   /** Length in bytes of @c m_object_name. */
76   uint m_object_name_length;
77   /** Column INDEX_NAME. */
78   char m_index_name[COL_INDEX_NAME_SIZE];
79   /** Length in bytes of @c m_index_name. */
80   uint m_index_name_length;
81   /** Column OBJECT_INSTANCE_BEGIN. */
82   intptr m_object_instance_addr;
83   /** Column SOURCE. */
84   char m_source[COL_SOURCE_SIZE];
85   /** Length in bytes of @c m_source. */
86   uint m_source_length;
87   /** Column OPERATION. */
88   enum_operation_type m_operation;
89   /** Column NUMBER_OF_BYTES. */
90   ulonglong m_number_of_bytes;
91   /** Column FLAGS. */
92   uint m_flags;
93 };
94 
95 /** Position of a cursor on PERFORMANCE_SCHEMA.EVENTS_WAITS_CURRENT. */
96 struct pos_events_waits_current : public PFS_double_index
97 {
pos_events_waits_currentpos_events_waits_current98   pos_events_waits_current()
99     : PFS_double_index(0, 0)
100   {}
101 
resetpos_events_waits_current102   inline void reset(void)
103   {
104     m_index_1= 0;
105     m_index_2= 0;
106   }
107 
next_threadpos_events_waits_current108   inline void next_thread(void)
109   {
110     m_index_1++;
111     m_index_2= 0;
112   }
113 };
114 
115 /** Position of a cursor on PERFORMANCE_SCHEMA.EVENTS_WAITS_HISTORY. */
116 struct pos_events_waits_history : public PFS_double_index
117 {
pos_events_waits_historypos_events_waits_history118   pos_events_waits_history()
119     : PFS_double_index(0, 0)
120   {}
121 
resetpos_events_waits_history122   inline void reset(void)
123   {
124     m_index_1= 0;
125     m_index_2= 0;
126   }
127 
next_threadpos_events_waits_history128   inline void next_thread(void)
129   {
130     m_index_1++;
131     m_index_2= 0;
132   }
133 };
134 
135 /**
136   Adapter, for table sharing the structure of
137   PERFORMANCE_SCHEMA.EVENTS_WAITS_CURRENT.
138 */
139 class table_events_waits_common : public PFS_engine_table
140 {
141 protected:
142   virtual int read_row_values(TABLE *table,
143                               unsigned char *buf,
144                               Field **fields,
145                               bool read_all);
146 
147   table_events_waits_common(const PFS_engine_table_share *share, void *pos);
148 
~table_events_waits_common()149   ~table_events_waits_common()
150   {}
151 
152   void clear_object_columns();
153   int make_table_object_columns(PFS_events_waits *wait);
154   int make_file_object_columns(PFS_events_waits *wait);
155   int make_socket_object_columns(PFS_events_waits *wait);
156   int make_metadata_lock_object_columns(PFS_events_waits *wait);
157 
158   void make_row(PFS_events_waits *wait);
159 
160   /** Current row. */
161   row_events_waits m_row;
162   /** True if the current row exists. */
163   bool m_row_exists;
164 };
165 
166 /** Table PERFORMANCE_SCHEMA.EVENTS_WAITS_CURRENT. */
167 class table_events_waits_current : public table_events_waits_common
168 {
169 public:
170   /** Table share */
171   static PFS_engine_table_share m_share;
172   static PFS_engine_table* create();
173   static int delete_all_rows();
174   static ha_rows get_row_count();
175 
176   virtual int rnd_next();
177   virtual int rnd_pos(const void *pos);
178   virtual void reset_position(void);
179 
180 protected:
181   table_events_waits_current();
182 
183 public:
~table_events_waits_current()184   ~table_events_waits_current()
185   {}
186 
187 private:
188   friend class table_events_waits_history;
189   friend class table_events_waits_history_long;
190 
191   /** Table share lock. */
192   static THR_LOCK m_table_lock;
193   /**
194     Fields definition.
195     Also used by table_events_waits_history
196     and table_events_waits_history_long.
197   */
198   static TABLE_FIELD_DEF m_field_def;
199 
200   void make_row(PFS_thread *thread, PFS_events_waits *wait);
201 
202   /** Current position. */
203   pos_events_waits_current m_pos;
204   /** Next position. */
205   pos_events_waits_current m_next_pos;
206 };
207 
208 /** Table PERFORMANCE_SCHEMA.EVENTS_WAITS_HISTORY. */
209 class table_events_waits_history : public table_events_waits_common
210 {
211 public:
212   /** Table share */
213   static PFS_engine_table_share m_share;
214   static PFS_engine_table* create();
215   static int delete_all_rows();
216   static ha_rows get_row_count();
217 
218   virtual int rnd_next();
219   virtual int rnd_pos(const void *pos);
220   virtual void reset_position(void);
221 
222 protected:
223   table_events_waits_history();
224 
225 public:
~table_events_waits_history()226   ~table_events_waits_history()
227   {}
228 
229 private:
230   /** Table share lock. */
231   static THR_LOCK m_table_lock;
232 
233   void make_row(PFS_thread *thread, PFS_events_waits *wait);
234 
235   /** Current position. */
236   pos_events_waits_history m_pos;
237   /** Next position. */
238   pos_events_waits_history m_next_pos;
239 };
240 
241 /** Table PERFORMANCE_SCHEMA.EVENTS_WAITS_HISTORY_LONG. */
242 class table_events_waits_history_long : public table_events_waits_common
243 {
244 public:
245   /** Table share */
246   static PFS_engine_table_share m_share;
247   static PFS_engine_table* create();
248   static int delete_all_rows();
249   static ha_rows get_row_count();
250 
251   virtual int rnd_next();
252   virtual int rnd_pos(const void *pos);
253   virtual void reset_position(void);
254 
255 protected:
256   table_events_waits_history_long();
257 
258 public:
~table_events_waits_history_long()259   ~table_events_waits_history_long()
260   {}
261 
262 private:
263   /** Table share lock. */
264   static THR_LOCK m_table_lock;
265 
266   /** Current position. */
267   PFS_simple_index m_pos;
268   /** Next position. */
269   PFS_simple_index m_next_pos;
270 };
271 
272 /** @} */
273 #endif
274