| // Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| // @dart=2.9 |
| |
| import 'dart:isolate'; |
| |
| import 'json_benchmark.dart'; |
| import 'latency.dart'; |
| |
| main() async { |
| // Start GC pressure from helper isolate. |
| final exitPort = ReceivePort(); |
| final exitFuture = exitPort.first; |
| final isolate = await Isolate.spawn(run, null, onExit: exitPort.sendPort); |
| |
| // Measure event loop latency. |
| const tickDuration = const Duration(milliseconds: 1); |
| const numberOfTicks = 8 * 1000; // min 8 seconds. |
| final EventLoopLatencyStats stats = |
| await measureEventLoopLatency(tickDuration, numberOfTicks); |
| |
| // Kill isolate & wait until it's dead. |
| isolate.kill(priority: Isolate.immediate); |
| await exitFuture; |
| |
| // Report event loop latency statistics. |
| stats.report('EventLoopLatencyJson'); |
| } |
| |
| void run(dynamic msg) { |
| while (true) { |
| JsonRoundTripBenchmark().run(); |
| } |
| } |