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Fix for bug#22740 Events: Decouple Event_queue from Event_db_repository

Browse Source 
This patch implements the idea of the bug report by making Event_queue
unaware of Event_db_repository by making a higher level class - Events,
which is aware of most of all classes, responsible for passing all data
needed for adding/updating/deleting an event to/from the queue.

Introduces few new classes :
 - Event_worker_thread
 - Event_queue_element_for_exec
This commit is contained in:
kroki/tomash@moonlight.home
2007-01-29 20:46:29 +03:00
parent db5c164688
commit c06c7356e3
9 changed files with 406 additions and 370 deletions
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31
sql/event_queue.h
View File

@ -16,12 +16,10 @@
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 Event_queue_element_for_exec;
class THD;
class Event_scheduler;
class Event_queue
{
@ -35,19 +33,19 @@ public:
deinit_mutexes();
bool
init_queue(THD *thd, Event_db_repository *db_repo);
init_queue(THD *thd);
void
deinit_queue();
/* Methods for queue management follow */
int
create_event(THD *thd, LEX_STRING dbname, LEX_STRING name);
void
create_event(THD *thd, Event_queue_element *new_element);
int
void
update_event(THD *thd, LEX_STRING dbname, LEX_STRING name,
LEX_STRING *new_schema, LEX_STRING *new_name);
Event_queue_element *new_element);
void
drop_event(THD *thd, LEX_STRING dbname, LEX_STRING name);
@ -59,14 +57,15 @@ public:
recalculate_activation_times(THD *thd);
bool
get_top_for_execution_if_time(THD *thd, Event_job_data **job_data);
get_top_for_execution_if_time(THD *thd,
Event_queue_element_for_exec **event_name);
void
dump_internal_status();
int
load_events_from_db(THD *thd);
void
empty_queue();
protected:
void
find_n_remove_event(LEX_STRING db, LEX_STRING name);
@ -76,8 +75,6 @@ protected:
drop_matching_events(THD *thd, LEX_STRING pattern,
bool (*)(LEX_STRING, Event_basic *));
void
empty_queue();
void
dbug_dump_queue(time_t now);
@ -86,11 +83,7 @@ protected:
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 */
/* The sorted queue with the Event_queue_element objects */
QUEUE queue;
TIME next_activation_at;