From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on ip-172-31-65-14.ec2.internal X-Spam-Level: X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 Path: eternal-september.org!reader01.eternal-september.org!aioe.org!qYcU9JfyUhY8OJVCu5UZdA.user.46.165.242.91.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: String view of file Date: Tue, 3 Jan 2023 18:02:54 +0100 Organization: Aioe.org NNTP Server Message-ID: References: <10f5dfec-32fb-4333-a9b6-2ee71c1871c0n@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: gioia.aioe.org; logging-data="27772"; posting-host="qYcU9JfyUhY8OJVCu5UZdA.user.gioia.aioe.org"; mail-complaints-to="abuse@aioe.org"; User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.6.1 X-Notice: Filtered by postfilter v. 0.9.2 Content-Language: en-US Xref: reader01.eternal-september.org comp.lang.ada:64773 List-Id: On 2023-01-03 17:37, Jeffrey R.Carter wrote: > On 2023-01-02 00:36, Jesper Quorning wrote: >> >> - Zero copy access to a (read-only) file. > > So far as I know, any access to a file involves copying information from > the external medium into memory, so this may be impossible. ... in many cases copying drastically improves performance, e.g. caching, read ahead techniques etc. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de