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MDEV-4506: Parallel replication: Intermediate commit.

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A few fixes following tests. Now can apply one INSERT event in
a separate worker thread.
This commit is contained in:
unknown
2013-06-25 09:30:19 +02:00
parent 26a9fbc416
commit 6d1e55f518
3 changed files with 57 additions and 4 deletions
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14
sql/rpl_parallel.cc
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@@ -13,9 +13,13 @@ rpt_handle_event(rpl_parallel_thread::queued_event *qev,
struct rpl_parallel_thread *rpt)
{
int err;
Relay_log_info *rli= qev->rli;
thd->rli_slave= rli;
thd->rpl_filter = rli->mi->rpl_filter;
/* ToDo: Access to thd, and what about rli, split out a parallel part? */
err= apply_event_and_update_pos(qev->ev, thd, qev->rli, rpt);
mysql_mutex_lock(&rli->data_lock);
err= apply_event_and_update_pos(qev->ev, thd, rli, rpt);
/* ToDo: error handling. */
/* ToDo: also free qev->ev, or hold on to it for a bit if necessary. */
}
@@ -108,7 +112,7 @@ handle_rpl_parallel_thread(void *arg)
}
}
rpt_handle_event(events, thd, rpt);
free(events);
my_free(events);
events= next;
}
@@ -313,6 +317,7 @@ rpl_parallel_thread_pool::destroy()
rpl_parallel_change_thread_count(this, 0, true);
mysql_mutex_destroy(&LOCK_rpl_thread_pool);
mysql_cond_destroy(&COND_rpl_thread_pool);
inited= false;
}
@@ -325,8 +330,8 @@ rpl_parallel_thread_pool::get_thread(rpl_parallel_entry *entry)
while ((rpt= free_list) == NULL)
mysql_cond_wait(&COND_rpl_thread_pool, &LOCK_rpl_thread_pool);
free_list= rpt->next;
mysql_mutex_lock(&rpt->LOCK_rpl_thread);
mysql_mutex_unlock(&LOCK_rpl_thread_pool);
mysql_mutex_lock(&rpt->LOCK_rpl_thread);
rpt->current_entry= entry;
return rpt;
@@ -383,6 +388,9 @@ rpl_parallel::do_event(Relay_log_info *rli, Log_event *ev, THD *parent_thd)
rpl_parallel_thread *cur_thread;
rpl_parallel_thread::queued_event *qev;
/* ToDo: what to do with this lock?!? */
mysql_mutex_unlock(&rli->data_lock);
if (!(qev= (rpl_parallel_thread::queued_event *)my_malloc(sizeof(*qev),
MYF(0))))
{