non_async_loop_repro.js
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non_async_loop_repro.js
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	const TOTAL = Number(process.env.TOTAL \|\| 5000000);
	const MODE = process.env.MODE \|\| "routeSync";

	function nowMs() {
	return performance.now();
	}

	function makeContext() {
	return {
	finalized: false,
	req: {
	routeIndex: -1
	},
	res: null,
	text(body, status = 200) {
	this.finalized = true;
	this.res = { body, status };
	return this.res;
	}
	};
	}

	function routeSync(c) {
	return c.text("ok");
	}

	function runTightLoop() {
	let acc = 0;
	for (let i = 0; i < TOTAL; i++) {
	acc += i;
	}
	return acc;
	}

	function runRouteSyncLoop() {
	let finalized = 0;
	for (let i = 0; i < TOTAL; i++) {
	const ctx = makeContext();
	routeSync(ctx);
	if (ctx.finalized) finalized++;
	}
	return finalized;
	}

	function main() {
	const startedAt = nowMs();
	const result = MODE === "tightLoop" ? runTightLoop() : runRouteSyncLoop();
	const elapsedMs = nowMs() - startedAt;

	console.log(`mode=${MODE}`);
	console.log(`total=${TOTAL}`);
	console.log(`elapsed_ms=${elapsedMs.toFixed(3)}`);
	console.log(`ops_per_sec=${(TOTAL / (elapsedMs / 1000)).toFixed(1)}`);
	console.log(`result=${result}`);
	}

	main();

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