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denoland-deno/cli/tests/workers_startup_bench.ts
Kitson Kelly 9837d324a7 Update to TypeScript 3.7 (#3275)
and update to prettier 1.19

Also, update `assert()` and remove not null assertions where possibly
in `cli`.

Closes #3273
2019-11-13 13:42:34 -05:00

25 lines
773 B
TypeScript

// Benchmark measures time it takes to start and stop a number of workers.
const workerCount = 50;
async function bench(): Promise<void> {
const workers: Worker[] = [];
for (let i = 1; i <= workerCount; ++i) {
const worker = new Worker("./subdir/bench_worker.ts");
const promise = new Promise((resolve): void => {
worker.onmessage = (e): void => {
if (e.data.cmdId === 0) resolve();
};
});
worker.postMessage({ cmdId: 0, action: 2 });
await promise;
workers.push(worker);
}
console.log("Done creating workers closing workers!");
for (const worker of workers) {
worker.postMessage({ action: 3 });
await worker.closed; // Required to avoid a cmdId not in table error.
}
console.log("Finished!");
}
bench();