Ancestors

Toot

Written by Romain Guy on 2024-12-20 at 00:57

New blog post! If you are a Kotlin or Java Android developer, this one should make you go 🤯.

https://www.romainguy.dev/posts/2024/naming-is-hard/

I'm not even sorry.

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Descendants

Written by Ian G. Clifton on 2024-12-20 at 01:10

@romainguy Over the holidays you can rewrite the obfuscator to analyze which fields are used together to pick obfuscated names based on the L1 cache implications. Should be a quick and easy project 😉

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Written by Romain Guy on 2024-12-20 at 01:20

@iangclifton I thought about it many times 😅

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Written by Jake Wharton on 2024-12-20 at 03:58

@romainguy This hurt me

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Written by Romain Guy on 2024-12-20 at 04:31

@jw Yeah but you loved it too

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Written by Jake Wharton on 2024-12-20 at 04:53

@romainguy I very much did 🫤

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Written by bondolo on 2024-12-20 at 04:23

@romainguy Alphabetizing is such a strange choice. Especially given the use of ProGuard/R8. The declaration order would seem to be preferable in most cases (barring false sharing of course).

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Written by Romain Guy on 2024-12-20 at 04:32

@bondolo I would indeed prefer declaration order as well. I should ask the ART team about the reasoning behind this choice. I'm sure there's a great reason.

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Written by v̾i̾t̾r̾i̾o̾l̾i̾x̾ on 2024-12-20 at 04:35

@romainguy 🤯

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Written by Ryan Harter on 2024-12-20 at 04:49

@romainguy That's...interesting.

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Written by Aurimas Liutikas :google: on 2024-12-20 at 07:23

@romainguy WTF 😒

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Written by Sven Jacobs :androidHead: on 2024-12-20 at 07:23

@romainguy Well, that's unexpected 🤯 From now on I'm going to prepend a_ to all important fields. No, of course I'm just joking 😉

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Written by terrakok on 2024-12-20 at 09:12

@romainguy i1, i2, i3, ... are returned back to the game :androidJetpack:

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Written by michael aubert on 2024-12-20 at 10:03

@romainguy 64 bytes cache line seems like it should be increased by now. I wonder how often phones get an L1 cache hit these days.

(not a magic wand, just an observation. changing the behaviour of ART would also be good)

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Written by Igor K on 2024-12-20 at 14:14

😲 how much is R8 messing with micro optimizations? I imagine this would be one case but it cannot be the only

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Written by Ellen Shapiro on 2024-12-20 at 14:40

@romainguy @jw

=> View attached media

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Written by humazed on 2024-12-28 at 00:33

@romainguy, how did you even know this was a thing?

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Written by Romain Guy on 2024-12-28 at 02:57

@humazed I always wondered what the memory layouts of objects was so a few years I read through ART's source code. Also validated by testing when attempting to do some data oriented programming. Then procrastinated on a blog post for years 😂

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