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MorlockP's profile
ⓘ Dogs don't have thumbs
ⓘ Dogs don't have thumbs
ⓘ Dogs don't have thumbs
@MorlockP

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ⓘ Dogs don't have thumbs

@MorlockP

Two-time Prometheus award-winning hard science fiction author. https://www.amazon.com/dp/B005JPPMS6  Learn how to homestead https://www.amazon.com/dp/B093BC3K1T 

Aristillus Crater, Luna
amazon.com/dp/B005JPPMS6
Joined June 2012

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    1. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      3/ uses the number of 1 bits in a number to perform a certain optimization. How are nodes of the hashtable (which we use to store nodes of the tree) allocated? Glad you asked. Via a custom memory allocator that manages both heap and stack. Well that's not so bad is it?

      3 replies 0 retweets 8 likes
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    2. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      4/ well, actually, it sort of is. The memory allocator - for obscure reasons that can best be explained as "premature optimization is the root of all evil" - can flip between different 'eras' or scopes, and when it does, the stack and the heap switch directions.

      2 replies 1 retweet 14 likes
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    3. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      5/ so, at least this is all well documented, right? no there are no comments. except occasionally things like "this is very obscure and bad, but we have to keep it" 100% serious

      2 replies 2 retweets 14 likes
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    4. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      6/ well, at least you can deduce what's going on from function names, right? no the functions are all named after obscure literature or puns and so forth

      5 replies 0 retweets 20 likes
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    5. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      7/ well, ok, so the functions aren't given good names, but if a variable is named something like "input_data_ptr", that helps, right? no the variables are all single letters like a, b, c, d

      2 replies 0 retweets 12 likes
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    6. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      8/ so anyway, my task is to change a certain data type from 32 bit to 64 bit except really, it's from 30 bit to 62 bit, because we use the top two bits to store metadata in a structure, or something, right? no, via bit twiddling

      2 replies 0 retweets 12 likes
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    7. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      9/ well, at least you can single step into the functions that do the bit twiddling and watch them work, right? no, it's all implemented via #defines, so you can't single step into the multi-line "functions"

      2 replies 0 retweets 11 likes
      Show this thread
    8. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      10/ well, at least you can rewrite the #defines into functions so that you CAN single step through them, to see exactly where the memory corruption takes place, right? no why not?

      1 reply 0 retweets 8 likes
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    9. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      11/ answer: let me circle back to that later ok, but at least you can use the types that functions return to help you understand the code, right? no, the code freely casts from type to type

      1 reply 0 retweets 11 likes
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    10. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      12/ well, you can look at those explicit casts and deduce something from them, right? no, the casts are implicit

      2 replies 0 retweets 10 likes
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      ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

      13/ well, at least you know that none of the implicit casts lose any significant bits, or mangles sign bits into data bits, or vice versa, right, because the compiler warns in those cases? no, because that compiler warning has been turned off

      7:49 AM - 7 Jun 2019
      • 12 Likes
      • operation lockstep idprism ❤ 🇺🇸 ✠ Frank Lloyd Righteous, Ph.D Misanthropologist pomme de terrible ~botnet-filref Taubuster Classic. Some Other Nick Redneck Prometheus 2.1 aidan l. coyne✝️🇻🇦🏡🔕☀️
      2 replies 0 retweets 12 likes
        1. New conversation
        2. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          14/ well, ok, hopping back, at least you can use function signatures to help you understand things, right? no, because #defines ah, right, you said that...ok, so rewrite those as functions no, because any one given #define is applied to arguments of MULTIPLE DIFFERENT TYPES

          1 reply 0 retweets 13 likes
          Show this thread
        3. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          15/ so, anyway, a few weeks later: * I've commented all of the code * I've renamed several funcs * I've rewritten macros as funcs * I've renamed variables * I've turned on compiler warnings * I've written funcs to do safe casts (or crash with error if values forbid it) >>>

          4 replies 0 retweets 11 likes
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        4. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          16/ ...and I've narrowed down a memory corruption issue to about a 5 line block. whew. Thank God this is F̶r̶i̶ whiskey-day

          1 reply 0 retweets 18 likes
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        5. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          17/ Anyway, gig is scheduled to run another ~4 weeks and I'm laying 50/50 odds that they won't renew me because I'm incompetent. ¯\_(ツ)_/¯

          4 replies 0 retweets 14 likes
          Show this thread
        6. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          ⓘ Dogs don't have thumbs Retweeted Arthur Frelling Dent

          18/ Oh, no, this isn't a "a Friday". This is "a most of May and all of June so far"https://twitter.com/ArthurFrDent/status/1137009727538249729 …

          ⓘ Dogs don't have thumbs added,

          Arthur Frelling Dent @ArthurFrDent
          In which a friday has gone to hell, the weekend is blown up, and ditchdigging seems a more worthwhile profession. https://twitter.com/MorlockP/status/1137006334073868288 …
          2 replies 0 retweets 18 likes
          Show this thread
        7. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          19/ There was a certain mailing list I was on once, and then I left, and then some other guy joined, and read something about me and - not knowing that I'd been on the list - said "wow, look at this retard". He was corrected. >>>

          1 reply 0 retweets 10 likes
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        8. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          20/ "oh, no, Travis didn't retard himself into that situation. He GENIUSed his way into that situation."

          1 reply 0 retweets 20 likes
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        9. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          21/ Likewise, this code base. This is not the work of a retard. This is the work of a genius. The work of a retard can be discarded and replaced. The work of a genius needs to be tidied up by lesser craftsmen, who labor in obscurity. Michelangelo didn't spread his own tarps

          6 replies 9 retweets 40 likes
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        10. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          22/ Found the memory corruption issue. Old code: typedef uint32_t fred; typdef struct { fred a; fred b; } bob; new code: I replace uint32_t with uin64_t; sizeof(bob) automatically updates, right? no we're not doing sizeof(bob) ; we've got it hardcoded.

          6 replies 0 retweets 22 likes
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        11. ⓘ Dogs don't have thumbs‏ @MorlockP 7 Jun 2019

          ⓘ Dogs don't have thumbs Retweeted Camping Roomba

          23/https://twitter.com/ctdonath/status/1137049658210037763 …

          ⓘ Dogs don't have thumbs added,

          Camping Roomba @ctdonath
          Replying to @MorlockP
          Novice: hardcodes 2x size of uint32_t because bob is a fixed size. Craftsman: codes sizeof(bob) because abstraction matters. Genius: hardcodes 2x size of uint32_t because significant speedup. Maintainer: codes sizeof(bob) because abstraction mattered.
          0 replies 0 retweets 12 likes
          Show this thread
        12. End of conversation

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