wasm nixos

.replit

run = "crystal run main.cr"
# crystal build main.cr --cross-compile --target wasm32-unknown-wasi
# wasm2wat main.wasm -o main.wat
## wasm2c main.wasm --no-debug-names -o main.c
## gcc -O3 -march=native -c main.c -o main.o

entrypoint = "main.cr"

[nix]
channel = "stable-23_11"

replit.nix

{ pkgs }: {
	deps = [
		pkgs.crystal
		pkgs.shards
		pkgs.openssl
		pkgs.pkg-config
    pkgs.wabt
    pkgs.glibc.dev
    pkgs.gcc
    pkgs.lld
    pkgs.llvm
    pkgs.libllvm
    pkgs.pcre.dev
    pkgs.wasmer
	];
}

~/WetSkilledAngels$ crystal build --release --no-debug main.cr
~/WetSkilledAngels$ time ./main
"4\n"

real 0m0.118s
user 0m0.013s
sys 0m0.032s
~/WetSkilledAngels$ time iwasm main.aot
4

real 0m0.038s
user 0m0.016s
sys 0m0.022s

stdout = IO::Memory.new
status = Process.run("iwasm", ["main.aot"], output: stdout)
output = stdout.to_s

p output

---

~/WetSkilledAngels$ time ./main
"4\n"

real 0m0.050s
user 0m0.026s
sys 0m0.014s
~/WetSkilledAngels$

stdout = IO::Memory.new
process = Process.new("iwasm", ["main.aot"], output: stdout)
status = process.wait
p stdout.to_s

~/WetSkilledAngels$ ./main
WASM 35.97 ( 27.80ms) (±38.53%) 37.7kB/op 1956003.75× slower
Native 70.35M ( 14.21ns) (±49.93%) 0.0B/op fastest

require "benchmark"

Benchmark.ips do |x|
  x.report("WASM") { 
    stdout = IO::Memory.new
    status = Process.run("iwasm", ["main.aot"], output: stdout)
    output = stdout.to_s
    }
  x.report("Native") { 
    trait     = 10 # Kowalstwo
    skill     = 5  # Siła
    playerlvl = 1
    energy    = 1
    itemlvl   = 1

      score = Math.hypot(playerlvl, itemlvl)          # Im więcej tym gorzej, drugi wyraz jest silniejszy
      power = Math.log(skill**trait, score)/10*energy # Pierwszy wyraz w log zwiększa szansę, a drugi ogranicza
      difficulty = power/itemlvl
    }
end