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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. Patrick Walton‏ @pcwalton 15 Aug 2019
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      It’s a shame that the ergonomic problems of Java-the-language obscure the really impressive technical achievements of the JVM.

      10 replies 46 retweets 345 likes
    2. Fadi Botros‏ @botros__fadi 15 Aug 2019
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      Replying to @pcwalton

      And this is why Kotlin and Scala (which I think had an influence on Rust) exist. But I think that introducing such a bloated thing like the GC wasn’t that good (except in Async programming) But honestly, it was revolutionary, but still inefficient in sync programming.

      3 replies 0 retweets 5 likes
    3. Tony “Abolish ICE” Arcieri  🦀‏ @bascule 15 Aug 2019
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      Replying to @botros__fadi @pcwalton

      ARC is eager and GC is lazy. This confers a ton of advantages for advanced generational/copying collectors like the JVM's: - Different allocation strategies for short vs long-lived objects - Better data locality - Better throughput because of the above and avoiding ARC busywork

      1 reply 0 retweets 6 likes
      Patrick Walton‏ @pcwalton 15 Aug 2019
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      Replying to @bascule @botros__fadi

      Note that barriers, needed for generational GC, make tracing GC “eager” as well. And advanced reference counting schemes like RC-Immix typically do some form of deferred reference counting, which is “lazy”.

      2:35 PM - 15 Aug 2019
      • 5 Likes
      • isiah meadows 🧢 MaMo whitequark Tony “Abolish ICE” Arcieri 🦀 Fadi Botros
      1 reply 0 retweets 5 likes
        1. Patrick Walton‏ @pcwalton 15 Aug 2019
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          Replying to @pcwalton @bascule @botros__fadi

          You’re touching on what David Bacon describes in “A Unified Theory of Garbage Collection”: https://courses.cs.washington.edu/courses/cse590p/05au/p50-bacon.pdf …

          0 replies 0 retweets 12 likes
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