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WL#3337 (Event scheduler new architecture)

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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.
This commit is contained in:
unknown
2006-07-05 17:12:50 +02:00
parent a5dfeb02e9
commit b9a7fe2757
14 changed files with 242 additions and 2286 deletions
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25
sql/event_data_objects.h
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@ -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; }
};