You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
136 lines
3.7 KiB
136 lines
3.7 KiB
#ifndef _EVENT_SCHEDULER_H_
|
|
#define _EVENT_SCHEDULER_H_
|
|
/* Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License, version 2.0,
|
|
as published by the Free Software Foundation.
|
|
|
|
This program is also distributed with certain software (including
|
|
but not limited to OpenSSL) that is licensed under separate terms,
|
|
as designated in a particular file or component or in included license
|
|
documentation. The authors of MySQL hereby grant you an additional
|
|
permission to link the program and your derivative works with the
|
|
separately licensed software that they have included with MySQL.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License, version 2.0, for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
|
|
|
|
/**
|
|
@addtogroup Event_Scheduler
|
|
@{
|
|
*/
|
|
/**
|
|
@file
|
|
|
|
Declarations of the scheduler thread class
|
|
and related functionality.
|
|
|
|
This file is internal to Event_Scheduler module. Please do not
|
|
include it directly. All public declarations of Event_Scheduler
|
|
module are in events.h and event_data_objects.h.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include "my_inttypes.h"
|
|
#include "mysql/components/services/mysql_cond_bits.h"
|
|
#include "mysql/components/services/mysql_mutex_bits.h"
|
|
#include "mysql/components/services/psi_stage_bits.h"
|
|
|
|
class Event_db_repository;
|
|
class Event_job_data;
|
|
class Event_queue;
|
|
class Event_queue_element_for_exec;
|
|
class THD;
|
|
|
|
void pre_init_event_thread(THD *thd);
|
|
|
|
bool post_init_event_thread(THD *thd);
|
|
|
|
void deinit_event_thread(THD *thd);
|
|
|
|
class Event_worker_thread {
|
|
public:
|
|
void run(THD *thd, Event_queue_element_for_exec *event);
|
|
|
|
private:
|
|
void print_warnings(THD *thd, Event_job_data *et);
|
|
};
|
|
|
|
class Event_scheduler {
|
|
public:
|
|
Event_scheduler(Event_queue *event_queue_arg);
|
|
~Event_scheduler();
|
|
|
|
/* State changing methods follow */
|
|
|
|
bool start(int *err_no);
|
|
|
|
bool stop();
|
|
|
|
/*
|
|
Need to be public because has to be called from the function
|
|
passed to my_thread_create.
|
|
*/
|
|
bool run(THD *thd);
|
|
|
|
/* Information retrieving methods follow */
|
|
bool is_running();
|
|
|
|
void dump_internal_status();
|
|
|
|
private:
|
|
int workers_count();
|
|
|
|
/* helper functions */
|
|
bool execute_top(Event_queue_element_for_exec *event_name);
|
|
|
|
/* helper functions for working with mutexes & conditionals */
|
|
void lock_data(const char *func, uint line);
|
|
|
|
void unlock_data(const char *func, uint line);
|
|
|
|
void cond_wait(THD *thd, struct timespec *abstime,
|
|
const PSI_stage_info *stage, const char *src_func,
|
|
const char *src_file, uint src_line);
|
|
|
|
mysql_mutex_t LOCK_scheduler_state;
|
|
|
|
enum enum_state { INITIALIZED = 0, RUNNING, STOPPING };
|
|
|
|
/* This is the current status of the life-cycle of the scheduler. */
|
|
enum enum_state state;
|
|
|
|
THD *scheduler_thd;
|
|
|
|
mysql_cond_t COND_state;
|
|
|
|
Event_queue *queue;
|
|
|
|
uint mutex_last_locked_at_line;
|
|
uint mutex_last_unlocked_at_line;
|
|
const char *mutex_last_locked_in_func;
|
|
const char *mutex_last_unlocked_in_func;
|
|
bool mutex_scheduler_data_locked;
|
|
bool waiting_on_cond;
|
|
|
|
ulonglong started_events;
|
|
|
|
private:
|
|
// Disallow copy construction and assignment.
|
|
Event_scheduler(const Event_scheduler &) = delete;
|
|
void operator=(Event_scheduler &) = delete;
|
|
};
|
|
|
|
/**
|
|
@} (End of group Event_Scheduler)
|
|
*/
|
|
|
|
#endif /* _EVENT_SCHEDULER_H_ */
|
|
|