| // Copyright (c) 2017, 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. |
| |
| /// Shared code used by fasta_perf and incremental_perf. |
| library front_end.tool.perf_common; |
| |
| import 'dart:io'; |
| |
| import 'package:front_end/src/api_prototype/front_end.dart'; |
| import 'package:front_end/src/fasta/command_line_reporting.dart'; |
| import 'package:front_end/src/fasta/fasta_codes.dart'; |
| import 'package:kernel/target/flutter.dart' show FlutterTarget; |
| import 'package:kernel/target/targets.dart' show Target, TargetFlags; |
| import 'package:kernel/target/vm.dart' show VmTarget; |
| |
| /// Error messages that we temporarily allow when compiling benchmarks in strong |
| /// mode. |
| /// |
| /// This whitelist lets us run the compiler benchmarks while those errors get |
| /// fixed. We don't blindly allow any error message because we would then miss |
| /// situations where the benchmarks are actually broken. |
| /// |
| /// Note: the performance bots compile both dart2js and the flutter-gallery app |
| /// as benchmarks, so they both need to be checked before we remove a message |
| /// from this set. |
| final whitelistMessageCode = new Set<String>.from(<String>[ |
| // Code names in this list should match the key used in messages.yaml |
| codeInvalidAssignment.name, |
| codeOverrideTypeMismatchParameter.name, |
| codeOverriddenMethodCause.name, |
| |
| // The following errors are not covered by unit tests in the SDK repo because |
| // they are only seen today in the flutter-gallery benchmark (external to |
| // this repo). |
| codeInvalidCastFunctionExpr.name, |
| codeInvalidCastTopLevelFunction.name, |
| codeUndefinedGetter.name, |
| codeUndefinedMethod.name, |
| ]); |
| |
| onErrorHandler(bool isStrong) { |
| bool messageReported = false; |
| return (CompilationMessage m) { |
| if (m.severity == Severity.internalProblem || |
| m.severity == Severity.error) { |
| if (!isStrong || !whitelistMessageCode.contains(m.code)) { |
| var uri = m.span.start.sourceUrl; |
| var offset = m.span.start.offset; |
| stderr.writeln('$uri:$offset: ' |
| '${severityName(m.severity, capitalized: true)}: ${m.message}'); |
| exitCode = 1; |
| } else if (!messageReported) { |
| messageReported = true; |
| stderr.writeln('Whitelisted error messages omitted'); |
| } |
| } |
| }; |
| } |
| |
| /// Creates a [VmTarget] or [FlutterTarget] with strong-mode enabled or |
| /// disabled. |
| // TODO(sigmund): delete as soon as the disableTypeInference flag and the |
| // strongMode flag get merged, and we have a single way of specifying the |
| // strong-mode flag to the FE. |
| Target createTarget({bool isFlutter: false, bool strongMode: true}) { |
| var flags = new TargetFlags(strongMode: strongMode); |
| if (isFlutter) { |
| return strongMode |
| ? new FlutterTarget(flags) |
| : new LegacyFlutterTarget(flags); |
| } else { |
| return strongMode ? new VmTarget(flags) : new LegacyVmTarget(flags); |
| } |
| } |
| |
| class LegacyVmTarget extends VmTarget { |
| LegacyVmTarget(TargetFlags flags) : super(flags); |
| |
| @override |
| bool get disableTypeInference => true; |
| } |
| |
| class LegacyFlutterTarget extends FlutterTarget { |
| LegacyFlutterTarget(TargetFlags flags) : super(flags); |
| |
| @override |
| bool get disableTypeInference => true; |
| } |
| |
| class TimingsCollector { |
| final Stopwatch stopwatch = new Stopwatch(); |
| |
| final Map<String, List<double>> timings = <String, List<double>>{}; |
| |
| final bool verbose; |
| |
| TimingsCollector(this.verbose); |
| |
| String currentKey; |
| |
| void start(String key) { |
| if (currentKey != null) { |
| throw "Attempt to time '$key' while '$currentKey' is running."; |
| } |
| currentKey = key; |
| stopwatch |
| ..reset() |
| ..start(); |
| } |
| |
| void stop(String key) { |
| stopwatch.stop(); |
| if (currentKey == null) { |
| throw "Need to call 'start' before calling 'stop'."; |
| } |
| if (currentKey != key) { |
| throw "Can't stop timing '$key' because '$currentKey' is running."; |
| } |
| currentKey = null; |
| double duration = |
| stopwatch.elapsedMicroseconds / Duration.microsecondsPerMillisecond; |
| List<double> durations = (timings[key] ??= <double>[]); |
| durations.add(duration); |
| if (verbose) { |
| print("$key took: ${duration}ms"); |
| } |
| } |
| |
| void printTimings() { |
| timings.forEach((String key, List<double> durations) { |
| double total = 0.0; |
| for (double duration in durations.skip(3)) { |
| total += duration; |
| } |
| print("$key took: ${total/(durations.length - 3)}ms"); |
| }); |
| } |
| } |