fix_max_connections to resize alarm_queue (Bug #1435)

include/queues.h:
  resize_queue()
include/thr_alarm.h:
  resize_thr_alarm() to resize alarm_queue
mysys/queues.c:
  resize_queue()
mysys/thr_alarm.c:
  resize_thr_alarm() to resize alarm_queue

1 files changed, 10 insertions, 0 deletions

diff --git a/mysys/thr_alarm.c b/mysys/thr_alarm.c
index 2289f8208bc..5d2ac8b0099 100644
--- a/mysys/thr_alarm.c
+++ b/mysys/thr_alarm.c
@@ -120,6 +120,16 @@ void init_thr_alarm(uint max_alarms)
   DBUG_VOID_RETURN;
 }
 
+void resize_thr_alarm(uint max_alarms)
+{
+  pthread_mutex_lock(&LOCK_alarm);
+  /* it's ok not to shrink the queue sometimes */
+  if (alarm_queue.elements < max_alarms)
+    resize_queue(&alarm_queue,max_alarms+1);
+  pthread_mutex_unlock(&LOCK_alarm);
+  return;
+}
+
 /*
   Request alarm after sec seconds.