mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 12:32:27 +01:00
3b840adee7
Cleaned up the code a bit. Fixed few leaks. This code still does not load events on server startup from disk. The problem is that there is a need for a THD instance, which does not exist during server boot. This will be solved soon. Still Event_timed is used both for the memory queue and for exectution. This will be changed according to WL#3337 probably in the next commit.
132 lines
2.8 KiB
C++
132 lines
2.8 KiB
C++
#ifndef _EVENT_QUEUE_H_
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#define _EVENT_QUEUE_H_
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/* Copyright (C) 2004-2006 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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class sp_name;
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class Event_timed;
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class Event_db_repository;
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class Event_job_data;
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class THD;
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typedef bool * (*event_timed_identifier_comparator)(Event_timed*, Event_timed*);
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class Event_scheduler_ng;
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class Event_queue
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{
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public:
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Event_queue();
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void
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init_mutexes();
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void
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deinit_mutexes();
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bool
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init_queue(Event_db_repository *db_repo, Event_scheduler_ng *sched);
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void
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deinit_queue();
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/* Methods for queue management follow */
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int
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create_event(THD *thd, Event_parse_data *et);
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int
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update_event(THD *thd, Event_parse_data *et, LEX_STRING *new_schema,
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LEX_STRING *new_name);
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bool
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drop_event(THD *thd, sp_name *name);
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void
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drop_schema_events(THD *thd, LEX_STRING schema);
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uint
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events_count();
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uint
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events_count_no_lock();
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static bool
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check_system_tables(THD *thd);
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void
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recalculate_queue(THD *thd);
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void
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empty_queue();
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Event_timed *
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get_top_for_execution_if_time(THD *thd, time_t now, struct timespec *abstime);
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Event_timed*
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get_top();
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void
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remove_top();
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void
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top_changed();
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protected:
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Event_timed *
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find_event(LEX_STRING db, LEX_STRING name, bool remove_from_q);
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int
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load_events_from_db(THD *thd);
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void
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drop_matching_events(THD *thd, LEX_STRING pattern,
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bool (*)(Event_timed *,LEX_STRING *));
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/* LOCK_event_queue is the mutex which protects the access to the queue. */
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pthread_mutex_t LOCK_event_queue;
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Event_db_repository *db_repository;
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uint mutex_last_locked_at_line;
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uint mutex_last_unlocked_at_line;
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const char* mutex_last_locked_in_func;
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const char* mutex_last_unlocked_in_func;
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bool mutex_queue_data_locked;
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/* helper functions for working with mutexes & conditionals */
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void
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lock_data(const char *func, uint line);
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void
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unlock_data(const char *func, uint line);
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void
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notify_observers();
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void
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dbug_dump_queue(time_t now);
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Event_scheduler_ng *scheduler;
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//public:
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/* The sorted queue with the Event_timed objects */
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QUEUE queue;
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};
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#endif /* _EVENT_QUEUE_H_ */
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