service_pfs_notification.cc File Reference

The performance schema implementation of the notification service. More...

#include <mysql/components/my_service.h>
#include <mysql/components/service_implementation.h>
#include <mysql/plugin.h>
#include <string.h>
#include <atomic>
#include "my_systime.h"
#include "pfs_thread_provider.h"
#include "sql/log.h"
#include "storage/perfschema/pfs_instr.h"
#include "storage/perfschema/pfs_server.h"
#include "storage/perfschema/pfs_services.h"
#include "template_utils.h"

Classes
struct	PFS_notification_node
	PFS_notification_node Element of the notification registry containing callback functions. More...
struct	PFS_notification_registry
	PFS_notification_registry A singly linked list of callback registrations. More...

Macros
#define	EVENT_THREAD_CREATE   0x0001
	Bitmap identifiers for PSI_notification callbacks. More...
#define	EVENT_THREAD_DESTROY   0x0002
#define	EVENT_SESSION_CONNECT   0x0004
#define	EVENT_SESSION_DISCONNECT   0x0008
#define	EVENT_SESSION_CHANGE_USER   0x0010

Functions
void	pfs_get_thread_system_attrs (PFS_thread *thread, PSI_thread_attrs *thread_attrs)
int	pfs_register_notification (const PSI_notification *callbacks, bool with_ref_count)
	Register callbacks for the Notification service. More...
int	pfs_unregister_notification (int handle)
	Unregister callbacks for the Notification service. More...
void	pfs_notify_thread_create (PFS_thread *thread)
	Invoke callbacks registered for create thread events. More...
void	pfs_notify_thread_destroy (PFS_thread *thread)
	Invoke callbacks registered for destroy thread events. More...
void	pfs_notify_session_connect (PFS_thread *thread)
	Invoke callbacks registered for session connect events. More...
void	pfs_notify_session_disconnect (PFS_thread *thread)
	Invoke callbacks registered for session disconnect events. More...
void	pfs_notify_session_change_user (PFS_thread *thread)
	Invoke callbacks registered for session change user events. More...
int	impl_register_notification (const PSI_notification *callbacks, bool with_ref_count)
	Notification Service implementation. More...
int	impl_unregister_notification (int handle)

Variables
static PFS_notification_registry	pfs_notification_registry
	Notification service registry. More...
const mysql_service_pfs_notification_v3_t	SERVICE_IMPLEMENTATION (mysql_server, pfs_notification_v3)

Detailed Description

The performance schema implementation of the notification service.

Macro Definition Documentation

EVENT_SESSION_CHANGE_USER

#define EVENT_SESSION_CHANGE_USER   0x0010

EVENT_SESSION_CONNECT

#define EVENT_SESSION_CONNECT   0x0004

EVENT_SESSION_DISCONNECT

#define EVENT_SESSION_DISCONNECT   0x0008

EVENT_THREAD_CREATE

#define EVENT_THREAD_CREATE   0x0001

Bitmap identifiers for PSI_notification callbacks.

See also

PSI_notification

EVENT_THREAD_DESTROY

#define EVENT_THREAD_DESTROY   0x0002

Function Documentation

impl_register_notification()

int impl_register_notification	(	const PSI_notification *	callbacks,
		bool	with_ref_count
	)

Notification Service implementation.

impl_unregister_notification()

int impl_unregister_notification

(

int

handle

)

pfs_get_thread_system_attrs()

void pfs_get_thread_system_attrs	(	PFS_thread *	thread,
		PSI_thread_attrs *	thread_attrs
	)

pfs_notify_session_change_user()

void pfs_notify_session_change_user

(

PFS_thread *

thread

)

Invoke callbacks registered for session change user events.

Parameters

thread

instrumented thread

See also

PSI_v1::notify_session_change_user

pfs_notify_session_connect()

void pfs_notify_session_connect

(

PFS_thread *

thread

)

Invoke callbacks registered for session connect events.

Parameters

thread

instrumented thread

See also

PSI_v1::notify_session_connect

pfs_notify_session_disconnect()

void pfs_notify_session_disconnect

(

PFS_thread *

thread

)

Invoke callbacks registered for session disconnect events.

Parameters

thread

instrumented thread

See also

PSI_v1::notify_session_disconnect

pfs_notify_thread_create()

void pfs_notify_thread_create

(

PFS_thread *

thread

)

Invoke callbacks registered for create thread events.

This is an internal function, not part of Notification API.

Parameters

thread

instrumented thread

See also

pfs_notify_thread_create

pfs_notify_thread_destroy()

void pfs_notify_thread_destroy

(

PFS_thread *

thread

)

Invoke callbacks registered for destroy thread events.

This is an internal function, not part of Notification API.

Parameters

thread

instrumented thread

See also

pfs_notify_thread_destroy

pfs_register_notification()

int pfs_register_notification	(	const PSI_notification *	callbacks,
		bool	with_ref_count
	)

Register callbacks for the Notification service.

Parameters

callbacks	block of callback function pointers
with_ref_count	true if callbacks can be unregistered

Returns

handle unique handle needed to unregister, 0 on failure

See also

PSI_v1::register_notification

pfs_unregister_notification()

int pfs_unregister_notification

(

int

handle

)

Unregister callbacks for the Notification service.

Parameters

handle

unique handle returned by register_notification()

Returns

0 if successful, non-zero otherwise

See also

PSI_v1::unregister_notification

Variable Documentation

pfs_notification_registry

PFS_notification_registry pfs_notification_registry

static

Notification service registry.

SERVICE_IMPLEMENTATION

const mysql_service_pfs_notification_v3_t SERVICE_IMPLEMENTATION(mysql_server, pfs_notification_v3)	(	mysql_server	,
		pfs_notification_v3
	)

Initial value:

= {
    impl_register_notification, impl_unregister_notification}