mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 20:42:30 +01:00
3da4eef700
Uninitialized in the constructor member variables were pointing to nirvana and causing a crash when debug information of the Event Scheduler was dumped in result to COM_DEBUG packet sent to the server. sql/event_queue.cc: Initialize member variables or they will point to nirvana and could possible cause a crash during dumping of debug information. sql/event_queue.h: remove unneeded line sql/event_scheduler.cc: Initialize member variables or they will point to nirvana and could possible cause a crash during dumping of debug information. sql/event_scheduler.h: remove unneeded state
143 lines
2.9 KiB
C++
143 lines
2.9 KiB
C++
#ifndef _EVENT_SCHEDULER_H_
|
|
#define _EVENT_SCHEDULER_H_
|
|
/* Copyright (C) 2004-2006 MySQL AB
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; version 2 of the License.
|
|
|
|
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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
|
|
/**
|
|
@file
|
|
This file is internal to Events module. Please do not include it directly.
|
|
All public declarations of Events module are in events.h and
|
|
event_data_objects.h.
|
|
*/
|
|
|
|
|
|
class Event_queue;
|
|
class Event_job_data;
|
|
class Event_db_repository;
|
|
class Events;
|
|
|
|
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:
|
|
static void
|
|
init(Event_db_repository *db_repository_arg)
|
|
{
|
|
db_repository= db_repository_arg;
|
|
}
|
|
|
|
void
|
|
run(THD *thd, Event_queue_element_for_exec *event);
|
|
|
|
private:
|
|
void
|
|
print_warnings(THD *thd, Event_job_data *et);
|
|
|
|
static Event_db_repository *db_repository;
|
|
};
|
|
|
|
|
|
class Event_scheduler
|
|
{
|
|
public:
|
|
Event_scheduler(Event_queue *event_queue_arg);
|
|
~Event_scheduler();
|
|
|
|
|
|
/* State changing methods follow */
|
|
|
|
bool
|
|
start();
|
|
|
|
bool
|
|
stop();
|
|
|
|
/*
|
|
Need to be public because has to be called from the function
|
|
passed to pthread_create.
|
|
*/
|
|
bool
|
|
run(THD *thd);
|
|
|
|
|
|
/* Information retrieving methods follow */
|
|
bool
|
|
is_running();
|
|
|
|
void
|
|
dump_internal_status();
|
|
|
|
private:
|
|
uint
|
|
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 char* msg,
|
|
const char *func, uint line);
|
|
|
|
pthread_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;
|
|
|
|
pthread_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:
|
|
/* Prevent use of these */
|
|
Event_scheduler(const Event_scheduler &);
|
|
void operator=(Event_scheduler &);
|
|
};
|
|
|
|
#endif /* _EVENT_SCHEDULER_H_ */
|