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Merge bk-internal.mysql.com:/home/bk/mysql-5.1

Browse Source 
into  bodhi.local:/opt/local/work/mysql-5.1-runtime
This commit is contained in:
kostja@bodhi.local
2007-04-03 14:34:37 +04:00
parent 8b8a61d77a 6ca1e16e4e
commit 93d0316f45
49 changed files with 637 additions and 509 deletions
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31
sql/event_queue.cc
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@ -32,16 +32,6 @@
#define LOCK_QUEUE_DATA() lock_data(SCHED_FUNC, __LINE__)
#define UNLOCK_QUEUE_DATA() unlock_data(SCHED_FUNC, __LINE__)
struct event_queue_param
{
THD *thd;
Event_queue *queue;
pthread_mutex_t LOCK_loaded;
pthread_cond_t COND_loaded;
bool loading_finished;
};
/*
Compares the execute_at members of two Event_queue_element instances.
Used as callback for the prioritized queue when shifting
@ -62,7 +52,7 @@ struct event_queue_param
execute_at.second_part is not considered during comparison
*/
static int
static int
event_queue_element_compare_q(void *vptr, byte* a, byte *b)
{
my_time_t lhs = ((Event_queue_element *)a)->execute_at;
@ -148,7 +138,7 @@ Event_queue::init_queue(THD *thd)
0 /*max_on_top*/, event_queue_element_compare_q,
NULL, EVENT_QUEUE_EXTENT))
{
sql_print_error("SCHEDULER: Can't initialize the execution queue");
sql_print_error("Event Scheduler: Can't initialize the execution queue");
goto err;
}
@ -183,7 +173,7 @@ Event_queue::deinit_queue()
}
/*
/**
Adds an event to the queue.
SYNOPSIS
@ -210,7 +200,7 @@ Event_queue::create_event(THD *thd, Event_queue_element *new_element)
LOCK_QUEUE_DATA();
queue_insert_safe(&queue, (byte *) new_element);
dbug_dump_queue(thd->query_start());
pthread_cond_broadcast(&COND_queue_state);
pthread_cond_broadcast(&COND_queue_state);
UNLOCK_QUEUE_DATA();
}
DBUG_VOID_RETURN;
@ -258,7 +248,7 @@ Event_queue::update_event(THD *thd, LEX_STRING dbname, LEX_STRING name,
{
DBUG_PRINT("info", ("new event in the queue: 0x%lx", (long) new_element));
queue_insert_safe(&queue, (byte *) new_element);
pthread_cond_broadcast(&COND_queue_state);
pthread_cond_broadcast(&COND_queue_state);
}
dbug_dump_queue(thd->query_start());
@ -289,7 +279,7 @@ Event_queue::drop_event(THD *thd, LEX_STRING dbname, LEX_STRING name)
find_n_remove_event(dbname, name);
dbug_dump_queue(thd->query_start());
UNLOCK_QUEUE_DATA();
/*
We don't signal here because the scheduler will catch the change
next time it wakes up.
@ -311,7 +301,7 @@ Event_queue::drop_event(THD *thd, LEX_STRING dbname, LEX_STRING name)
RETURN VALUE
>=0 Number of dropped events
NOTE
Expected is the caller to acquire lock on LOCK_event_queue
*/
@ -343,7 +333,7 @@ Event_queue::drop_matching_events(THD *thd, LEX_STRING pattern,
i++;
}
/*
We don't call pthread_cond_broadcast(&COND_queue_state);
We don't call pthread_cond_broadcast(&COND_queue_state);
If we remove the top event:
1. The queue is empty. The scheduler will wake up at some time and
realize that the queue is empty. If create_event() comes inbetween
@ -465,7 +455,8 @@ Event_queue::empty_queue()
uint i;
DBUG_ENTER("Event_queue::empty_queue");
DBUG_PRINT("enter", ("Purging the queue. %u element(s)", queue.elements));
sql_print_information("SCHEDULER: Purging queue. %u events", queue.elements);
sql_print_information("Event Scheduler: Purging the queue. %u events",
queue.elements);
/* empty the queue */
for (i= 0; i < queue.elements; ++i)
{
@ -598,7 +589,7 @@ Event_queue::get_top_for_execution_if_time(THD *thd,
if (top->status == Event_queue_element::DISABLED)
{
DBUG_PRINT("info", ("removing from the queue"));
sql_print_information("SCHEDULER: Last execution of %s.%s. %s",
sql_print_information("Event Scheduler: Last execution of %s.%s. %s",
top->dbname.str, top->name.str,
top->dropped? "Dropping.":"");
delete top;