MySQL  8.0.27
Source Code Documentation
item_pfs_func.h
Go to the documentation of this file.
1 /* Copyright (c) 2000, 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 #ifndef ITEM_PFS_FUNC_INCLUDED
24 #define ITEM_PFS_FUNC_INCLUDED
25 
26 /* Function items used by mysql */
27 
28 #include "my_inttypes.h"
29 #include "sql/item_func.h"
30 #include "sql/item_strfunc.h"
31 #include "sql/parse_location.h" // POS
32 #include "sql_string.h"
33 
34 class Item;
35 class THD;
36 struct Parse_context;
37 
38 /** ps_current_thread_id() */
39 
43 
44  public:
46  : Item_int_func(pos), m_thread_id(0) {}
47  bool itemize(Parse_context *pc, Item **res) override;
48  const char *func_name() const override { return "ps_current_thread_id"; }
49  bool resolve_type(THD *) override;
50  bool fix_fields(THD *thd, Item **ref) override;
51  longlong val_int() override;
52 };
53 
54 /** ps_thread_id() */
55 
56 class Item_func_pfs_thread_id final : public Item_int_func {
59 
60  public:
62  : Item_int_func(pos, a), m_thread_id(0) {}
63  bool itemize(Parse_context *pc, Item **res) override;
64  const char *func_name() const override { return "ps_thread_id"; }
65  bool resolve_type(THD *) override;
66  longlong val_int() override;
67 };
68 
69 /** format_bytes() */
70 
74  char m_value_buffer[20];
75 
76  public:
78  const char *func_name() const override { return "format_bytes"; }
79  bool resolve_type(THD *) override;
80  String *val_str(String *str) override;
81 };
82 
83 /** format_pico_time() */
84 
88  char m_value_buffer[20];
89 
90  public:
92  : Item_str_func(pos, a) {}
93  const char *func_name() const override { return "format_pico_time"; }
94  bool resolve_type(THD *) override;
95  String *val_str(String *str) override;
96 };
97 
98 #endif /* ITEM_PFS_FUNC_INCLUDED */
ps_current_thread_id()
Definition: item_pfs_func.h:40
Item_int_func super
Definition: item_pfs_func.h:41
bool resolve_type(THD *) override
Resolve type-related information for this item, such as result field type, maximum size,...
Definition: item_pfs_func.cc:61
bool fix_fields(THD *thd, Item **ref) override
Definition: item_pfs_func.cc:67
const char * func_name() const override
Definition: item_pfs_func.h:48
ulonglong m_thread_id
Definition: item_pfs_func.h:42
longlong val_int() override
Definition: item_pfs_func.cc:73
bool itemize(Parse_context *pc, Item **res) override
ps_current_thread_id()
Definition: item_pfs_func.cc:54
Item_func_pfs_current_thread_id(const POS &pos)
Definition: item_pfs_func.h:45
format_bytes()
Definition: item_pfs_func.h:71
Item_func_pfs_format_bytes(const POS &pos, Item *a)
Definition: item_pfs_func.h:77
String * val_str(String *str) override
Definition: item_pfs_func.cc:161
bool resolve_type(THD *) override
format_bytes()
Definition: item_pfs_func.cc:155
String m_value
Definition: item_pfs_func.h:73
const char * func_name() const override
Definition: item_pfs_func.h:78
Item_str_func super
Definition: item_pfs_func.h:72
char m_value_buffer[20]
Definition: item_pfs_func.h:74
format_pico_time()
Definition: item_pfs_func.h:85
char m_value_buffer[20]
Definition: item_pfs_func.h:88
String m_value
Definition: item_pfs_func.h:87
String * val_str(String *str) override
Definition: item_pfs_func.cc:232
const char * func_name() const override
Definition: item_pfs_func.h:93
Item_str_func super
Definition: item_pfs_func.h:86
Item_func_pfs_format_pico_time(const POS &pos, Item *a)
Definition: item_pfs_func.h:91
bool resolve_type(THD *) override
format_pico_time()
Definition: item_pfs_func.cc:225
ps_thread_id()
Definition: item_pfs_func.h:56
bool resolve_type(THD *) override
Resolve type-related information for this item, such as result field type, maximum size,...
Definition: item_pfs_func.cc:102
longlong val_int() override
Definition: item_pfs_func.cc:108
Item_func_pfs_thread_id(const POS &pos, Item *a)
Definition: item_pfs_func.h:61
bool itemize(Parse_context *pc, Item **res) override
ps_thread_id()
Definition: item_pfs_func.cc:95
ulonglong m_thread_id
Definition: item_pfs_func.h:58
Item_int_func super
Definition: item_pfs_func.h:57
const char * func_name() const override
Definition: item_pfs_func.h:64
Definition: item_func.h:896
Definition: item_strfunc.h:75
Base class that is used to represent any kind of expression in a relational query.
Definition: item.h:802
Using this class is fraught with peril, and you need to be very careful when doing so.
Definition: sql_string.h:165
For each client connection we create a separate thread with THD serving as a thread/connection descri...
Definition: sql_class.h:821
char * pos
Definition: do_ctype.cc:76
Some integer typedefs for easier portability.
unsigned long long int ulonglong
Definition: my_inttypes.h:55
long long int longlong
Definition: my_inttypes.h:54
std::string str(const mysqlrouter::ConfigGenerator::Options::Endpoint &ep)
Definition: config_generator.cc:1056
PT & ref(PT *tp)
Definition: tablespace_impl.cc:358
Our own string classes, used pervasively throughout the executor.
Environment data for the contextualization phase.
Definition: parse_tree_node_base.h:90
Bison "location" class.
Definition: parse_location.h:42