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stjepang's profile
Stjepan Glavina
Stjepan Glavina
Stjepan Glavina
@stjepang

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Stjepan Glavina

@stjepang

async runtimes and concurrency primitives in @rustlang he/they (available for hire)

Berlin, Germany
stjepang.github.io
Joined October 2009

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    1. Stjepan Glavina‏ @stjepang Feb 28
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      When runtimes are so simple, the ability to build a best-in-class one is then not in the hands of a few concurrency experts anymore, but rather in everyone's hands. 5/12

      2 replies 0 retweets 17 likes
      Show this thread
    2. Stjepan Glavina‏ @stjepang Feb 28
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      Furthermore, less complexity means fewer bugs, API easier to learn, and code that is easier to maintain and extend. 6/12

      1 reply 1 retweet 14 likes
      Show this thread
    3. Stjepan Glavina‏ @stjepang Feb 28
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      Safe code inspires confidence. No need to anxiously test runtimes with thread sanitizer, miri, or loom. No need to even use those tools because safe code is immune to the kinds of bugs they catch! 7/12

      1 reply 1 retweet 13 likes
      Show this thread
    4. Stjepan Glavina‏ @stjepang Feb 28
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      Don't worry about tunables because you can tune everything in a custom runtime. 8/12

      1 reply 1 retweet 12 likes
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    5. Stjepan Glavina‏ @stjepang Feb 28
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      Because there is freedom to tune all the moving parts, you should be able outperform all other runtimes by yourself! 9/12

      1 reply 1 retweet 14 likes
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    6. Stjepan Glavina‏ @stjepang Feb 28
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      If you look at how big the presently popular runtimes are, I want to reduce the complexity 10-20x in terms of lines of code and the size of API. 10/12

      1 reply 1 retweet 12 likes
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    7. Stjepan Glavina‏ @stjepang Feb 28
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      I'm also excited to see more people building more async runtimes in Rust! I really think so far we've only been scratching the surface and there is so much yet to explore. 11/12

      1 reply 1 retweet 16 likes
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    8. Stjepan Glavina‏ @stjepang Feb 28
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      Curious to hear thoughts and happy to answer questions! 12/12

      4 replies 1 retweet 12 likes
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    9. CryZe‏ @CryZe107 Feb 28
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      Replying to @stjepang

      That sounds great, but we definitely need to make sure that libraries can easily support all these various custom runtimes. At the moment there's too many different types between the different runtimes, so most libraries just get forked entirely instead.

      1 reply 0 retweets 0 likes
    10. Stjepan Glavina‏ @stjepang Feb 28
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      Replying to @CryZe107

      I agree this is a real problem, but I also think it's not as big as is commonly believed. The solution is to use types from the futures crate instead, and when tempted to use types from a runtime, try to push that use onto the user of your library instead.

      1 reply 0 retweets 2 likes
      Stjepan Glavina‏ @stjepang Feb 28
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      Replying to @stjepang @CryZe107

      To illustrate what I mean by that, consider async-h1, a beautifully simple HTTP client/server that consists of just two functions and only uses traits from the futures crate in its API. https://github.com/http-rs/async-h1/blob/f930e7bbbb48c21c69535ab86a4cdc5a36ecde49/examples/server.rs#L30 …

      11:47 AM - 28 Feb 2020
      • 6 Likes
      • Florian Gilcher ∠(・.-)―〉 →◎ Esteban K – 🦀⚙️@home InsanityBit yosh Marc Boschma kero
      1 reply 0 retweets 6 likes
        1. New conversation
        2. Stjepan Glavina‏ @stjepang Feb 28
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          Replying to @stjepang @CryZe107

          The point here is that async-h1 is not establishing TCP connections by itself, which is the part specific to runtimes. Instead, it's leaving that part to the user of the library, and only interfacing with it through traits from the futures crate.

          1 reply 0 retweets 2 likes
        3. InsanityBit‏ @InsanityBit Feb 29
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          Replying to @stjepang @CryZe107

          Is there a spawn in futures? I haven't ever managed to stay 100% in futures traits.

          1 reply 0 retweets 1 like
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