A facade to the functionality of the Event Scheduler. More...

#include <events.h>

Public Types
enum	enum_opt_event_scheduler { EVENTS_OFF , EVENTS_ON , EVENTS_DISABLED }

Public Member Functions
	Events (const Events &)=delete

void	operator= (Events &)=delete

Static Public Member Functions
static bool	start (int *err_no)

static bool	stop ()

static bool	init (bool opt_noacl)
	Initializes the scheduler's structures. More...

static void	deinit ()

static void	init_mutexes ()

static bool	create_event (THD thd, Event_parse_data parse_data, bool if_not_exists)
	Create a new event. More...

static bool	update_event (THD thd, Event_parse_data parse_data, const LEX_CSTRING new_dbname, const LEX_CSTRING new_name)
	Alter an event. More...

static bool	drop_event (THD *thd, LEX_CSTRING dbname, LEX_CSTRING name, bool if_exists)
	Drops an event. More...

static bool	lock_schema_events (THD *thd, const dd::Schema &schema)
	Take exclusive metadata lock on all events in a schema. More...

static bool	drop_schema_events (THD *thd, const dd::Schema &schema)
	Drops all events from a schema. More...

static bool	show_create_event (THD *thd, LEX_CSTRING dbname, LEX_CSTRING name)
	Implement SHOW CREATE EVENT statement. More...

static int	reconstruct_interval_expression (String *buf, interval_type interval, longlong expression)

static void	dump_internal_status ()

Static Public Attributes
static ulong	opt_event_scheduler = Events::EVENTS_OFF

Static Private Attributes
static Event_queue *	event_queue

static Event_scheduler *	scheduler

Detailed Description

A facade to the functionality of the Event Scheduler.

Every public operation against the scheduler has to be executed via the interface provided by a static method of this class. No instance of this class is ever created and it has no non-static data members.

The life cycle of the Events module is the following:

At server start up: init_mutexes() -> init() When the server is running: create_event(), drop_event(), start_or_stop_event_scheduler(), etc At shutdown: deinit(), destroy_mutexes().

The peculiar initialization and shutdown cycle is an adaptation to the outside server startup/shutdown framework and mimics the rest of MySQL subsystems (ACL, time zone tables, etc).

Member Enumeration Documentation

◆ enum_opt_event_scheduler

enum Events::enum_opt_event_scheduler

Enumerator
EVENTS_OFF
EVENTS_ON
EVENTS_DISABLED

Constructor & Destructor Documentation

◆ Events()

Events::Events ( const Events & )

delete

Member Function Documentation

◆ operator=()

void Events::operator= ( Events & )

delete

The documentation for this class was generated from the following files:

sql/events.h
sql/events.cc

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes