WL#3337 (Event scheduler new architecture)

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.


sql/event_data_objects.cc:
  Strip unneeded stuff from class Event_timed
  Event_timed is still used for the queue and execution.
  That will be changed in the next commit.
sql/event_data_objects.h:
  Strip unneeded stuff from class Event_timed
  Event_timed is still used for the queue and execution.
  That will be changed in the next commit.
sql/event_db_repository.cc:
  Cosmetics.
  Add a new method load_named_event_job, to be made complete in the 
  next commit. It will load from disk an instance of Event_job_data to
  be used during execution.
sql/event_db_repository.h:
  find_event does not need MEM_ROOT anymore
  because the memory is allocated on Event's own root.
sql/event_queue.cc:
  Remove dead code.
  Move dumping of the queue to separate method.
  Make critical sections in create_event & update_event
  as small as possible - load the new event outside of the section
  and free the object also outside of it.
sql/event_queue.h:
  init -> init_queue -> easier for ctags
  deinit -> deinit_queue -> easier for ctags
sql/event_scheduler.cc:
  empty this file
sql/event_scheduler.h:
  empty this file
sql/event_scheduler_ng.cc:
  add back DBUG_RETURN(0) in thread handlers.
  We don't stop running events when stopping the scheduler. Therefore
  remove this method now. If it is needed later it can be added back.
sql/event_scheduler_ng.h:
  Remove stop_all_running_threads()
  init -> init_scheduler
  deinit -> deinit_scheduler
  easier for ctags
sql/events.cc:
  Cosmetics
sql/events.h:
  Cosmetics
sql/set_var.cc:
  Remove references to dead code
sql/sql_parse.cc:
  Reorganize a bit.

1 files changed, 0 insertions, 25 deletions

diff --git a/sql/event_data_objects.h b/sql/event_data_objects.h
index 5ae5c7e81ab..a5aaf0e66fa 100644
--- a/sql/event_data_objects.h
+++ b/sql/event_data_objects.h
@@ -63,12 +63,6 @@ class Event_timed
 {
   Event_timed(const Event_timed &);	/* Prevent use of these */
   void operator=(Event_timed &);
-  my_bool in_spawned_thread;
-  ulong locked_by_thread_id;
-  my_bool running;
-  ulong thread_id;
-  pthread_mutex_t LOCK_running;
-  pthread_cond_t COND_finished;
 
   bool status_changed;
   bool last_executed_changed;
@@ -118,7 +112,6 @@ public:
   ulong sql_mode;
 
   bool dropped;
-  bool free_sphead_on_delete;
   uint flags;//all kind of purposes
 
   static void *operator new(size_t size)
@@ -146,9 +139,6 @@ public:
   void
   init();
 
-  void
-  deinit_mutexes();
-
   int
   load_from_row(TABLE *table);
 
@@ -172,24 +162,9 @@ public:
 
   int
   compile(THD *thd, MEM_ROOT *mem_root);
-
-  bool
-  is_running();
-
-  int
-  spawn_now(void * (*thread_func)(void*), void *arg);
-  
-  bool
-  spawn_thread_finish(THD *thd);
   
   void
   free_sp();
-
-  int
-  kill_thread(THD *thd);
-
-  void
-  set_thread_id(ulong tid) { thread_id= tid; }
 };