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https://github.com/dart-lang/sdk
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Add a front end perf test that computes unlinked summaries.
R=sigmund@google.com Review URL: https://codereview.chromium.org/2544643002 .
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@ -19,6 +19,8 @@ import 'package:analyzer/src/dart/sdk/sdk.dart' show FolderBasedDartSdk;
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import 'package:analyzer/src/generated/parser.dart';
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import 'package:analyzer/src/generated/source.dart';
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import 'package:analyzer/src/generated/source_io.dart';
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import 'package:analyzer/src/summary/format.dart';
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import 'package:analyzer/src/summary/summarize_ast.dart';
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import 'package:kernel/analyzer/loader.dart';
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import 'package:kernel/kernel.dart';
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import 'package:package_config/discovery.dart';
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@ -69,6 +71,11 @@ main(List<String> args) async {
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// are leaking memory?). That's why we run it twice and not 10 times.
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for (int i = 0; i < 2; i++) await generateKernel(entryUri);
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},
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'unlinked_summarize': () async {
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Set<Source> files = scanReachableFiles(entryUri);
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// TODO(sigmund): replace the warmup with instrumented snapshots.
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for (int i = 0; i < 10; i++) unlinkedSummarizeFiles(files);
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}
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};
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var handler = handlers[bench];
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@ -173,6 +180,29 @@ void parseFiles(Set<Source> files) {
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report("parse", pTime);
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}
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/// Produces unlinked summaries for every file in [files] and reports the time
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/// spent doing so.
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void unlinkedSummarizeFiles(Set<Source> files) {
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// The code below will record again how many chars are scanned and how long it
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// takes to scan them, even though we already did so in [scanReachableFiles].
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// Recording and reporting this twice is unnecessary, but we do so for now to
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// validate that the results are consistent.
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scanTimer = new Stopwatch();
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var old = scanTotalChars;
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scanTotalChars = 0;
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var summarizeTimer = new Stopwatch()..start();
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for (var source in files) {
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unlinkedSummarize(source);
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}
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summarizeTimer.stop();
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if (old != scanTotalChars) print('input size changed? ${old} chars');
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// TODO(paulberry): subtract out scan/parse time?
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var summarizeTime = summarizeTimer.elapsedMicroseconds;
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report('unlinked summarize', summarizeTime);
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}
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/// Add to [files] all sources reachable from [start].
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void collectSources(Source start, Set<Source> files) {
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if (!files.add(start)) return;
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@ -199,6 +229,11 @@ CompilationUnit parseFull(Source source) {
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return parser.parseCompilationUnit(token);
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}
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UnlinkedUnitBuilder unlinkedSummarize(Source source) {
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var unit = parseFull(source);
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return serializeAstUnlinked(unit);
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}
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/// Scan [source] and return the first token produced by the scanner.
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Token tokenize(Source source) {
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scanTimer.start();
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