Keynote: RailsConf 2022 - It's been a minute!
summary
Mentions that widget shipped in ruby31 and that a working tenderjit pure‑Ruby JIT exists, plus an ar264 ARM64 assembler gem and a jit_buffer provides executable memory cross‑platform. Describes a concrete hack: one blob of bytes is crafted so x86 interprets a jump and ARM interprets different instructions yet both return 0x2b, avoiding any if statements and letting tests run on both architectures. Notes a surprising personal stat: five cat photos per day on average and a 5,000 photo album limit.
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chapters (6)
- 0:00Start
- 10:43JIT: Generate Machine Code at Runtime
- 12:29Analog Terminal Bell
- 13:09Professional Software Development
- 54:38What does H2 mean for Hijack?
- 55:55Next Generation Rack
