From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS4713 221.184.0.0/13 X-Spam-Status: No, score=-3.7 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by dcvr.yhbt.net (Postfix) with ESMTP id 755921F453 for ; Thu, 7 Feb 2019 14:35:21 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 3C89A118FEC; Thu, 7 Feb 2019 23:35:16 +0900 (JST) Received: from o1678948x4.outbound-mail.sendgrid.net (o1678948x4.outbound-mail.sendgrid.net [167.89.48.4]) by neon.ruby-lang.org (Postfix) with ESMTPS id A3759118FED for ; Thu, 7 Feb 2019 23:35:13 +0900 (JST) Received: by filter0010p3iad2.sendgrid.net with SMTP id filter0010p3iad2-29178-5C5C421D-25 2019-02-07 14:35:09.550804814 +0000 UTC m=+155947.300048072 Received: from herokuapp.com (ec2-54-226-126-161.compute-1.amazonaws.com [54.226.126.161]) by ismtpd0023p1mdw1.sendgrid.net (SG) with ESMTP id 8VrvBjKsQ4OeMf0M3_J4nw for ; Thu, 07 Feb 2019 14:35:09.448 +0000 (UTC) Date: Thu, 07 Feb 2019 14:35:10 +0000 (UTC) From: merch-redmine@jeremyevans.net To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 66925 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 15592 X-Redmine-Issue-Author: akr X-Redmine-Sender: jeremyevans0 X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-SG-EID: ync6xU2WACa70kv/Ymy4QrNMhiuLXJG8OTL2vJD1yS5SPd1cNKjIDfwnCRqEDpBfPV67LiCK2thwBZ aep8a9RIZPpjDbllqmm4bWmPkI91AnQtWRMY2isTNZx7AEtIEEwlcLB6dZWMT+ax1ifouIZrMK+XlD foOviA/Pc5yXhQ21SYr2DM/sHS6gZSsIQL9kjlfXQNfODVnse8Gh/aVJXg== X-ML-Name: ruby-core X-Mail-Count: 91472 Subject: [ruby-core:91472] [Ruby trunk Feature#15592] mode that "autoload" behaves "require" immediately X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #15592 has been updated by jeremyevans0 (Jeremy Evans). akr (Akira Tanaka) wrote: > How about a feature to switch "autoload" behavior to "require" immediately. I would definitely use this, or something similar that immediately references all constants that would be autoloaded, as it would make it much easier to use libraries that use autoload in applications using chroot(2). ---------------------------------------- Feature #15592: mode that "autoload" behaves "require" immediately https://bugs.ruby-lang.org/issues/15592#change-76731 * Author: akr (Akira Tanaka) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- How about a feature to switch "autoload" behavior to "require" immediately. autoload is a feature for lazy loading. matz dislikes autoload as [Feature #5653]. I heard that he dislikes class (and other) definitions at arbitrary timing. I agree that eager loading is safer than lazy loading. However, lazy loading realize shorter loading time and it makes development cycle shorter. It is more important for larger applications as Eregon said in https://bugs.ruby-lang.org/issues/5653#note-39 . It is especially important when library loading causes I/O (code generation from DB schema). These two, safety of eager loading and easier development of lazy loading, conflicts. But if we can distinguish production mode and development mode, we can enjoy both benefits. So, I propose a feature to select autoload behavior from two modes: - autoload behaves as lazy loading as now in development mode - autoload behaves as eager loading (immediately invokes "require") in production mode. There are several idea to switch the mode: - $AUTOLOAD_MODE = :eager or :lazy - RubyVM.autoload_mode = :eager or :lazy - ObjectSpace.autoload_mode = :eager or lazy I'm not sure there is a good enough one in above list, though. -- https://bugs.ruby-lang.org/