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Monorepo for Aesthetic.Computer aesthetic.computer
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465// Executed by perf.mjs in a bounded, permission-restricted child process.import vm from "node:vm";import { performance } from "node:perf_hooks";
// Check the executing runtime too: a PATH entry named node must not silently// accept permission flags while running an unrestricted engine.if(process.versions.bun || !process.permission?.has || process.permission.has('fs.read')){ throw new Error('Headless benchmark requires a permission-restricted Node process.');}
let input = "";for await (const chunk of process.stdin) input += chunk;try { const { source, frames, warmup, width, height, seed, timeoutMs } = JSON.parse(input); const context = vm.createContext(Object.create(null), { codeGeneration: { strings: false, wasm: false }, }); vm.runInContext(` let randomState = ${seed} || 1; Math.random = () => { randomState ^= randomState << 13; randomState ^= randomState >>> 17; randomState ^= randomState << 5; return (randomState >>> 0) / 4294967296; }; `, context, { timeout: 100 }); const module = new vm.SourceTextModule(source, { context, identifier: "piece.mjs", importModuleDynamically: () => { throw new Error("Imports are unavailable in the headless logic benchmark."); }, }); await module.link(() => { throw new Error("Imports are unavailable in the headless logic benchmark."); }); await module.evaluate({ timeout: timeoutMs }); context.__piece = module.namespace; // All callbacks are created inside the guest realm; no host function, fs, // process, network client, or constructor is passed through the piece API. vm.runInContext(` const counts = Object.create(null); const drawing = ["wipe", "ink", "line", "circle", "box", "rect", "point", "plot", "polygon", "triangle", "write", "print", "paste"]; const api = { screen: { width: ${width}, height: ${height} } }; for (const name of drawing) api[name] = (..._args) => { counts[name] = (counts[name] || 0) + 1; return api; }; Object.freeze(api.screen); Object.freeze(api); if (typeof __piece.paint !== "function" && typeof __piece.sim !== "function") throw new Error("This piece has no paint or sim export to benchmark."); function call(name) { const result = __piece[name]?.(api); if (result && typeof result.then === "function") throw new Error("Async lifecycle functions are unavailable in the headless benchmark."); } call("boot"); for (let frame = 0; frame < ${warmup}; frame++) { call("sim"); call("paint"); } for (const name of Object.keys(counts)) counts[name] = 0; `, context, { timeout: timeoutMs }); const started = performance.now(); vm.runInContext(` for (let frame = 0; frame < ${frames}; frame++) { call("sim"); call("paint"); } `, context, { timeout: timeoutMs }); const elapsedMs = performance.now() - started; const totalCalls = JSON.parse(vm.runInContext("JSON.stringify(counts)", context, { timeout: 100 })); const drawCalls = Object.fromEntries(Object.entries(totalCalls).map(([name, count]) => [name, count / frames])); process.stdout.write(JSON.stringify({ measurement: "headless-logic", frames, warmup, width, height, seed, elapsedMs, msPerFrame: elapsedMs / frames, drawCalls, totalCalls }));} catch (error) { process.stderr.write(String(error.message).slice(0, 4096)); process.exitCode = 1;}