1 files changed, 121 insertions, 0 deletions
diff --git a/sql/event_queue.h b/sql/event_queue.h
new file mode 100644
index 00000000000..5b70506d388
--- /dev/null
+++ b/sql/event_queue.h
@@ -0,0 +1,121 @@
+#ifndef _EVENT_QUEUE_H_
+#define _EVENT_QUEUE_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; either version 2 of the License, or
+   (at your option) any later version.
+
+   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 */
+
+class Event_basic;
+class Event_db_repository;
+class Event_job_data;
+class Event_queue_element;
+
+class THD;
+class Event_scheduler;
+
+class Event_queue
+{
+public:
+  Event_queue();
+
+  void
+  init_mutexes();
+
+  void
+  deinit_mutexes();
+
+  bool
+  init_queue(THD *thd, Event_db_repository *db_repo);
+  
+  void
+  deinit_queue();
+
+  /* Methods for queue management follow */
+
+  int
+  create_event(THD *thd, LEX_STRING dbname, LEX_STRING name);
+
+  int
+  update_event(THD *thd, LEX_STRING dbname, LEX_STRING name,
+               LEX_STRING *new_schema, LEX_STRING *new_name);
+
+  void
+  drop_event(THD *thd, LEX_STRING dbname, LEX_STRING name);
+
+  void
+  drop_schema_events(THD *thd, LEX_STRING schema);
+
+  void
+  recalculate_activation_times(THD *thd);
+
+  bool
+  get_top_for_execution_if_time(THD *thd, Event_job_data **job_data);
+
+  void
+  dump_internal_status();
+
+  int
+  load_events_from_db(THD *thd);
+
+protected:
+  void
+  find_n_remove_event(LEX_STRING db, LEX_STRING name);
+
+
+  void
+  drop_matching_events(THD *thd, LEX_STRING pattern,
+                       bool (*)(LEX_STRING, Event_basic *));
+
+  void
+  empty_queue();
+
+  void
+  dbug_dump_queue(time_t now);
+
+  /* LOCK_event_queue is the mutex which protects the access to the queue. */
+  pthread_mutex_t LOCK_event_queue;
+  pthread_cond_t COND_queue_state;
+
+  Event_db_repository *db_repository;
+
+  Event_scheduler *scheduler;
+
+  /* The sorted queue with the Event_job_data objects */
+  QUEUE queue;
+
+  TIME next_activation_at;
+
+  uint mutex_last_locked_at_line;
+  uint mutex_last_unlocked_at_line;
+  uint mutex_last_attempted_lock_at_line;
+  const char* mutex_last_locked_in_func;
+  const char* mutex_last_unlocked_in_func;
+  const char* mutex_last_attempted_lock_in_func;
+  bool mutex_queue_data_locked;
+  bool mutex_queue_data_attempting_lock;
+  bool waiting_on_cond;
+
+  /* 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);
+};
+
+#endif /* _EVENT_QUEUE_H_ */