Method Delayed_insert

sql/sql_insert.cc:2668–2705

  */
  MDL_request grl_protection;
  Delayed_insert(LEX *lex)
    :locks_in_memory(0), thd(next_thread_id()),
     table(0),tables_in_use(0), stacked_inserts(0),
     status(0), retry(0), handler_thread_initialized(FALSE), group_count(0)
  {
    DBUG_ENTER("Delayed_insert constructor");
    thd.security_ctx->user=(char*) delayed_user;
    thd.security_ctx->host=(char*) my_localhost;
    thd.security_ctx->ip= NULL;
    thd.query_id= 0;
    strmake_buf(thd.security_ctx->priv_user, thd.security_ctx->user);
    thd.current_tablenr=0;
    thd.set_command(COM_DELAYED_INSERT);
    thd.lex->current_select= lex->current_select;
    thd.lex->sql_command= lex->sql_command;        // For innodb::store_lock()
    thd.lex->duplicates= lex->duplicates;
    /*
      Prevent changes to global.lock_wait_timeout from affecting
      delayed insert threads as any timeouts in delayed inserts
      are not communicated to the client.
    */
    thd.variables.lock_wait_timeout= LONG_TIMEOUT;

    bzero((char*) &thd.net, sizeof(thd.net));		// Safety
    bzero((char*) &table_list, sizeof(table_list));	// Safety
    thd.system_thread= SYSTEM_THREAD_DELAYED_INSERT;
    thd.security_ctx->host_or_ip= "";
    bzero((char*) &info,sizeof(info));
    mysql_mutex_init(key_delayed_insert_mutex, &mutex, MY_MUTEX_INIT_FAST);
    mysql_cond_init(key_delayed_insert_cond, &cond, NULL);
    mysql_cond_init(key_delayed_insert_cond_client, &cond_client, NULL);
    mysql_mutex_lock(&LOCK_delayed_insert);
    delayed_insert_threads++;
    mysql_mutex_unlock(&LOCK_delayed_insert);
    delayed_lock= global_system_variables.low_priority_updates ?
                                          TL_WRITE_LOW_PRIORITY : TL_WRITE;
    DBUG_VOID_RETURN;
  }
  ~Delayed_insert() override
  {
    /* The following is not really needed, but just for safety */