MySQL 8.0.31
Source Code Documentation
transaction_impl.h
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22
23#ifndef DD__TRANSACTION_IMPL_INCLUDED
24#define DD__TRANSACTION_IMPL_INCLUDED
25
26#include <sys/types.h>
27#include <map>
28
29#include "my_inttypes.h"
31#include "sql/dd/dd_kill_immunizer.h" // dd::DD_kill_immunizer
56#include "sql/dd/string_type.h" // dd::String_type
58#include "sql/field.h"
59#include "sql/handler.h"
60#include "sql/set_var.h"
61#include "sql/sql_class.h" // THD::killed_state
62#include "thr_lock.h"
63
65
66namespace dd {
67
68class Raw_table;
69
70///////////////////////////////////////////////////////////////////////////
71
72/**
73 Auxiliary class for opening dictionary tables.
74*/
76 public:
78 : m_thd(thd), m_lock_type(lock_type), m_ignore_global_read_lock(false) {}
79
81
82 Raw_table *get_table(const String_type &name) const;
83
84 template <typename T>
86 return get_table(T::DD_table::instance().name());
87 }
88
89 template <typename X>
91 X::Impl::register_tables(this);
92 }
93
94 template <typename X>
95 void add_table() {
96 this->add_table(X::instance().name());
97 }
98
99 /**
100 Open all the DD tables in list Open_dictionary_tables_ctx::m_tables.
101
102 @return true - On failure and error is reported.
103 @return false - On success.
104 */
105 bool open_tables();
106
107 void add_table(const String_type &name);
108
109 THD *get_thd() const { return m_thd; }
110
111 /**
112 Ignore global read lock when opening the tables.
113 */
116 }
117
118 private:
122 typedef std::map<String_type, Raw_table *> Object_table_map;
124};
125
126/**
127 Implementation of read-only data-dictionary transaction.
128 Relies on attachable transactions infrastructure.
129*/
131 public:
133 : otx(thd, TL_READ), m_thd(thd), m_kill_immunizer(thd) {
135 thd->tx_isolation = isolation;
136 }
137
139
141
142 private:
144
146};
147
148///////////////////////////////////////////////////////////////////////////
149
150/**
151 Class for storing/restoring state during dictionary update operations.
152*/
154 public:
156
158
160
161 private:
163
165
167
168 // Stores state before DD operations
177
178 /*
179 Save auto_increment_increment state.
180
181 Value of the auto_increment_increment is set to 1 in the constructor.
182 auto_increment_offset is used only when auto_increment_increment is greater
183 than 1. So saving only auto_increment_increment value.
184 */
186
187 // Save auto_inc_intervals_in_cur_stmt_for_binlog
189
191};
192
193///////////////////////////////////////////////////////////////////////////
194
195} // namespace dd
196
197#endif // DD__TRANSACTION_IMPL_INCLUDED
List of Discrete_interval objects.
Definition: discrete_interval.h:86
Storage for backup of Open_tables_state.
Definition: sql_class.h:680
Definition: sql_lex.h:2528
For each client connection we create a separate thread with THD serving as a thread/connection descri...
Definition: sql_class.h:922
enum_tx_isolation tx_isolation
Definition: sql_class.h:2485
void end_attachable_transaction()
End an active attachable transaction.
Definition: sql_class.cc:2198
void begin_attachable_ro_transaction()
Start a read-only attachable transaction.
Definition: sql_class.cc:2194
RAII class for immunizing the THD from kill operations.
Definition: dd_kill_immunizer.h:45
Auxiliary class for opening dictionary tables.
Definition: transaction_impl.h:75
void mark_ignore_global_read_lock()
Ignore global read lock when opening the tables.
Definition: transaction_impl.h:114
std::map< String_type, Raw_table * > Object_table_map
Definition: transaction_impl.h:122
Raw_table * get_table() const
Definition: transaction_impl.h:85
THD * m_thd
Definition: transaction_impl.h:119
bool m_ignore_global_read_lock
Definition: transaction_impl.h:121
bool open_tables()
Open all the DD tables in list Open_dictionary_tables_ctx::m_tables.
Definition: transaction_impl.cc:55
~Open_dictionary_tables_ctx()
Definition: transaction_impl.cc:42
Open_dictionary_tables_ctx(THD *thd, thr_lock_type lock_type)
Definition: transaction_impl.h:77
THD * get_thd() const
Definition: transaction_impl.h:109
thr_lock_type m_lock_type
Definition: transaction_impl.h:120
void register_tables()
Definition: transaction_impl.h:90
void add_table()
Definition: transaction_impl.h:95
Object_table_map m_tables
Definition: transaction_impl.h:123
Definition: raw_table.h:43
Implementation of read-only data-dictionary transaction.
Definition: transaction_impl.h:130
Transaction_ro(THD *thd, enum_tx_isolation isolation)
Definition: transaction_impl.h:132
~Transaction_ro()
Definition: transaction_impl.h:138
DD_kill_immunizer m_kill_immunizer
Definition: transaction_impl.h:145
Open_dictionary_tables_ctx otx
Definition: transaction_impl.h:140
THD * m_thd
Definition: transaction_impl.h:143
Class for storing/restoring state during dictionary update operations.
Definition: transaction_impl.h:153
enum_check_fields m_saved_check_for_truncated_fields
Definition: transaction_impl.h:174
~Update_dictionary_tables_ctx()
Definition: transaction_impl.cc:199
THD * m_thd
Definition: transaction_impl.h:162
DD_kill_immunizer m_kill_immunizer
Definition: transaction_impl.h:164
sql_mode_t m_saved_mode
Definition: transaction_impl.h:172
Query_tables_list * m_query_tables_list_backup
Definition: transaction_impl.h:166
long long m_latest_auto_incr_id
Definition: transaction_impl.h:173
ulong m_saved_auto_increment_increment
Definition: transaction_impl.h:185
uint m_saved_in_sub_stmt
Definition: transaction_impl.h:175
Open_dictionary_tables_ctx otx
Definition: transaction_impl.h:159
Open_tables_backup m_open_tables_state_backup
Definition: transaction_impl.h:169
ulonglong m_saved_options
Definition: transaction_impl.h:171
Update_dictionary_tables_ctx(THD *thd)
Definition: transaction_impl.cc:138
bool m_saved_binlog_row_based
Definition: transaction_impl.h:170
Discrete_intervals_list m_auto_inc_intervals_forced_saved
Definition: transaction_impl.h:190
Discrete_intervals_list m_auto_inc_intervals_in_cur_stmt_for_binlog_saved
Definition: transaction_impl.h:188
bool m_saved_time_zone_used
Definition: transaction_impl.h:176
ulonglong sql_mode_t
Definition: dd_event.h:36
Some integer typedefs for easier portability.
unsigned long long int ulonglong
Definition: my_inttypes.h:55
The version of the current data dictionary table definitions.
Definition: dictionary_client.h:42
Char_string_template< String_type_allocator > String_type
Definition: string_type.h:50
"public" interface to sys_var - server configuration variables.
enum_check_fields
Definition: field.h:171
enum_tx_isolation
Definition: handler.h:2973
case opt name
Definition: sslopt-case.h:32
thr_lock_type
Definition: thr_lock.h:50
@ TL_WRITE
Definition: thr_lock.h:91
@ TL_READ
Definition: thr_lock.h:61
unsigned int uint
Definition: uca-dump.cc:29