Function start_slave_deadlock_handler_thread

sql/slave.cc:542–563

Start the slave deadlock handler thread. This thread is used to kill worker thread transactions during parallel replication, when a storage engine attempts to take an errorneous conflicting lock that would cause a deadlock. Killing is done asynchroneously, as the kill may not be safe within the context of a callback from inside storage engine locking code. */

  callback from inside storage engine locking code.
*/
static int
start_slave_deadlock_handler_thread()
{
  pthread_t th;

  mysql_mutex_lock(&LOCK_slave_deadlock_handler);
  slave_deadlock_handler_thread_running= false;
  slave_deadlock_handler_thread_stop= false;
  if (mysql_thread_create(key_thread_slave_deadlock_handler,
                          &th, &connection_attrib, slave_deadlock_handler,
                          NULL))
  {
    sql_print_error("Failed to create thread while initialising slave");
    return 1;
  }

  while (!slave_deadlock_handler_thread_running)
    mysql_cond_wait(&COND_slave_deadlock_handler, &LOCK_slave_deadlock_handler);
  mysql_mutex_unlock(&LOCK_slave_deadlock_handler);

  return 0;
}


static void