MySQL 8.0.29
Source Code Documentation
psi_stage_bits.h
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22
23#ifndef COMPONENTS_SERVICES_BITS_PSI_STAGE_BITS_H
24#define COMPONENTS_SERVICES_BITS_PSI_STAGE_BITS_H
25
27
28/**
29 @file mponents/services/bits/psi_stage_bits.h
30 Performance schema instrumentation interface.
31
32 @defgroup psi_abi_stage Stage Instrumentation (ABI)
33 @ingroup psi_abi
34 @{
35*/
36
37/**
38 Instrumented stage key.
39 To instrument a stage, a stage key must be obtained using @c register_stage.
40 Using a zero key always disable the instrumentation.
41*/
42typedef unsigned int PSI_stage_key;
43
44/**
45 @def PSI_STAGE_VERSION_1
46 Performance Schema Stage Interface number for version 1.
47 This version is supported.
48*/
49#define PSI_STAGE_VERSION_1 1
50
51/**
52 @def PSI_CURRENT_STAGE_VERSION
53 Performance Schema Stage Interface number for the most recent version.
54 The most current version is @c PSI_STAGE_VERSION_1
55*/
56#define PSI_CURRENT_STAGE_VERSION 1
57
58/**
59 Interface for an instrumented stage progress.
60 This is a public structure, for efficiency.
61*/
63 unsigned long long m_work_completed;
64 unsigned long long m_work_estimated;
65};
67
68/**
69 Stage instrument information.
70 @since PSI_STAGE_VERSION_1
71 This structure is used to register an instrumented stage.
72*/
74 /** The registered stage key. */
76 /** The name of the stage instrument to register. */
77 const char *m_name{nullptr};
78 /**
79 The flags of the stage instrument to register.
80 @sa PSI_FLAG_PROGRESS
81 */
82 unsigned int m_flags{0};
83 /** Documentation. */
84 const char *m_documentation{nullptr};
85};
87
88/**
89 Stage registration API.
90 @param category a category name
91 @param info an array of stage info to register
92 @param count the size of the info array
93*/
94typedef void (*register_stage_v1_t)(const char *category,
95 struct PSI_stage_info_v1 **info, int count);
96
97/**
98 Start a new stage, and implicitly end the previous stage.
99 @param key the key of the new stage
100 @param src_file the source file name
101 @param src_line the source line number
102 @return the new stage progress
103*/
104typedef PSI_stage_progress_v1 *(*start_stage_v1_t)(PSI_stage_key key,
105 const char *src_file,
106 int src_line);
107
108/**
109 Get the current stage progress.
110 @return the stage progress
111*/
112typedef PSI_stage_progress_v1 *(*get_current_stage_progress_v1_t)(void);
113
114/** End the current stage. */
115typedef void (*end_stage_v1_t)(void);
116
119
120/** @} (end of group psi_abi_stage) */
121
122#endif /* COMPONENTS_SERVICES_BITS_PSI_STAGE_BITS_H */
unsigned int PSI_stage_key
Instrumented stage key.
Definition: psi_stage_bits.h:42
void(* register_stage_v1_t)(const char *category, struct PSI_stage_info_v1 **info, int count)
Stage registration API.
Definition: psi_stage_bits.h:94
void(* end_stage_v1_t)(void)
End the current stage.
Definition: psi_stage_bits.h:115
static int count
Definition: myisam_ftdump.cc:42
Log info(cout, "NOTE")
static const char * category
Definition: sha2_password.cc:168
Performance schema instrumentation interface.
required string key
Definition: replication_asynchronous_connection_failover.proto:59
Stage instrument information.
Definition: psi_stage_bits.h:73
unsigned int m_flags
The flags of the stage instrument to register.
Definition: psi_stage_bits.h:82
PSI_stage_key m_key
The registered stage key.
Definition: psi_stage_bits.h:75
const char * m_name
The name of the stage instrument to register.
Definition: psi_stage_bits.h:77
const char * m_documentation
Documentation.
Definition: psi_stage_bits.h:84
Interface for an instrumented stage progress.
Definition: psi_stage_bits.h:62
unsigned long long m_work_estimated
Definition: psi_stage_bits.h:64
unsigned long long m_work_completed
Definition: psi_stage_bits.h:63