lune/tests/ffi/README.md

tests/ffi

Requirements

gcc for library compiling (for external-*)

Test Results

External tests

• external_math
• external_pointer
• external_print
• external_struct
• external_closure

Luau-side

• pretty_print

  need box, ref test

• isInteger

• into_boundary

  need assertion

• from_boundary

  need assertion

• cast

  need assertion

Benchmark Results

Note: LuaJit's os.clock function returns process CPU time (used) which much smaller then Luau's os.clock output. In this benchmark, luau uses 'time.h' instead of os.clock. See utility/proc_clock

benchmark/external_call

Target external c function

int add(int a, int b) {
    return a + b;
}

bench_scale = 1000000

Lune ffi call function

cargo run run tests/ffi/benchmark/external_call cargo run --profile=release run tests/ffi/benchmark/external_call

Lune release target: 0.205127 (sec) Lune dev target: 1.556489 (sec)

LuaJit ffi call function

luajit tests/ffi/benchmark/external_call/luajit.lua

LuaJIT 2.1.1727870382: 0.001682 (sec) flags = JIT ON SSE3 SSE4.1 BMI2 fold cse dce fwd dse narrow loop abc sink fuse

Deno ffi call function

deno run --unstable-ffi --allow-ffi ./tests/ffi/benchmark/external_call/deno.ts

Deno 1.46.3: 0.006384 (sec) v8 = 12.9.202.5-rusty

Sysinformation

CPU: AMD Ryzen 5 7600 (12) @ 5.1 MEM: 61898MiB 5600 MT/s KERNEL: 6.8.12-2-pve (Proxmox VE 8.2.7 x86_64)