MySQL  8.0.17
Source Code Documentation
psi_mdl.h
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22 
23 #ifndef MYSQL_PSI_MDL_H
24 #define MYSQL_PSI_MDL_H
25 
26 /**
27  @file include/mysql/psi/psi_mdl.h
28  Performance schema instrumentation interface.
29 
30  @defgroup psi_abi_mdl Metadata Lock Instrumentation (ABI)
31  @ingroup psi_abi
32  @{
33 */
34 
35 #include "my_inttypes.h"
36 #include "my_macros.h"
37 #include "my_psi_config.h" // IWYU pragma: keep
38 #include "my_sharedlib.h"
40 
41 /**
42  @def PSI_MDL_VERSION_1
43  Performance Schema Metadata Lock Interface number for version 1.
44  This version is supported.
45 */
46 #define PSI_MDL_VERSION_1 1
47 
48 /**
49  @def PSI_CURRENT_MDL_VERSION
50  Performance Schema Metadata Lock Interface number for the most recent version.
51  The most current version is @c PSI_MDL_VERSION_1
52 */
53 #define PSI_CURRENT_MDL_VERSION 1
54 
55 /** Entry point for the performance schema interface. */
57  /**
58  ABI interface finder.
59  Calling this method with an interface version number returns either
60  an instance of the ABI for this version, or NULL.
61  @sa PSI_MDL_VERSION_1
62  @sa PSI_MDL_VERSION_2
63  @sa PSI_CURRENT_MDL_VERSION
64  */
65  void *(*get_interface)(int version);
66 };
68 
69 #ifdef HAVE_PSI_METADATA_INTERFACE
70 
71 /**
72  Performance Schema Metadata Lock Interface, version 1.
73  @since PSI_TRANSACTION_VERSION_1
74 */
81 };
82 
84 
86 
87 #endif /* HAVE_PSI_METADATA_INTERFACE */
88 
89 /** @} (end of group psi_abi_mdl) */
90 
91 #endif /* MYSQL_PSI_MDL_H */
Some common macros.
create_metadata_lock_v1_t create_metadata_lock
Definition: psi_mdl.h:76
Some integer typedefs for easier portability.
#define MYSQL_PLUGIN_IMPORT
Definition: my_sharedlib.h:70
Performance Schema Metadata Lock Interface, version 1.
Definition: psi_mdl.h:75
struct PSI_metadata_locker *(* start_metadata_wait_v1_t)(struct PSI_metadata_locker_state_v1 *state, struct PSI_metadata_lock *mdl, const char *src_file, unsigned int src_line)
Definition: psi_mdl_bits.h:95
void(* set_metadata_lock_status_v1_t)(PSI_metadata_lock *lock, opaque_mdl_status mdl_status)
Definition: psi_mdl_bits.h:90
end_metadata_wait_v1_t end_metadata_wait
Definition: psi_mdl.h:80
MYSQL_PLUGIN_IMPORT PSI_mdl_service_t * psi_mdl_service
Definition: psi_noop.cc:548
Functions related to handling of plugins and other dynamically loaded libraries.
Defines various enable/disable and HAVE_ macros related to the performance schema instrumentation sys...
void(* end_metadata_wait_v1_t)(struct PSI_metadata_locker *locker, int rc)
Definition: psi_mdl_bits.h:99
start_metadata_wait_v1_t start_metadata_wait
Definition: psi_mdl.h:79
const string version("\ersion\)
void(* destroy_metadata_lock_v1_t)(PSI_metadata_lock *lock)
Definition: psi_mdl_bits.h:93
PSI_metadata_lock *(* create_metadata_lock_v1_t)(void *identity, const struct MDL_key *key, opaque_mdl_type mdl_type, opaque_mdl_duration mdl_duration, opaque_mdl_status mdl_status, const char *src_file, unsigned int src_line)
Definition: psi_mdl_bits.h:85
destroy_metadata_lock_v1_t destroy_metadata_lock
Definition: psi_mdl.h:78
Entry point for the performance schema interface.
Definition: psi_mdl.h:56
Performance schema instrumentation interface.
set_metadata_lock_status_v1_t set_metadata_lock_status
Definition: psi_mdl.h:77