| // import 'dart:io' hide BytesBuilder; |
| // import 'dart:typed_data'; |
| // |
| // import 'package:analyzer/file_system/physical_file_system.dart'; |
| // import 'package:analyzer/src/dart/analysis/analysis_context_collection.dart'; |
| // import 'package:vm_service/vm_service.dart'; |
| // import 'package:analyzer/src/dart/analysis/byte_store.dart'; |
| // import 'package:analyzer/src/dart/analysis/file_content_cache.dart'; |
| // import 'package:analyzer/src/dart/analysis/unlinked_unit_store.dart'; |
| // |
| // import 'heap/analysis.dart'; |
| // import 'heap/format.dart'; |
| // import 'heap/load.dart'; |
| // |
| // /// --observe:5000 --disable-service-auth-codes --pause_isolates_on_unhandled_exceptions=false --pause_isolates_on_exit=false |
| // void main() async { |
| // // var path = '/Users/scheglov/dart/rwf-materials'; |
| // // var path = '/Users/scheglov/dart/rwf-materials/01-setting-up-your-environment'; |
| // var path = |
| // '/Users/scheglov/dart/rwf-materials/01-setting-up-your-environment/projects/starter/packages/component_library'; |
| // |
| // // var profiler = ProcessProfiler.getProfilerForPlatform()!; |
| // while (true) { |
| // var resourceProvider = PhysicalResourceProvider.INSTANCE; |
| // var fileContentCache = FileContentCache(resourceProvider); |
| // var unlinkedUnitStore = UnlinkedUnitStoreImpl(); |
| // |
| // var collection = AnalysisContextCollectionImpl( |
| // byteStore: MemoryByteStore(), |
| // resourceProvider: resourceProvider, |
| // fileContentCache: fileContentCache, |
| // unlinkedUnitStore: unlinkedUnitStore, |
| // sdkPath: '/Users/scheglov/Applications/dart-sdk', |
| // // performanceLog: PerformanceLog(stdout), |
| // includedPaths: [ |
| // path, |
| // ], |
| // // packagesFile: |
| // // '/Users/scheglov/dart/rwf-materials/15-automating-test-executions-and-build-distributions/projects/final/.dart_tool/package_config.json', |
| // ); |
| // |
| // print('[Analysis contexts: ${collection.contexts.length}]'); |
| // |
| // // double maxMemory = 0; |
| // var timer = Stopwatch()..start(); |
| // for (var analysisContext in collection.contexts) { |
| // // print(analysisContext.contextRoot.root.path); |
| // var analyzedFiles = analysisContext.contextRoot.analyzedFiles().toList(); |
| // for (var filePath in analyzedFiles) { |
| // if (filePath.endsWith('.dart')) { |
| // // print(' $filePath'); |
| // var analysisSession = analysisContext.currentSession; |
| // await analysisSession.getResolvedUnit(filePath); |
| // |
| // // collectAllGarbage(); |
| // |
| // // var usageInfo = await profiler.getProcessUsage(pid); |
| // // var memoryMB = usageInfo!.memoryMB; |
| // // if (memoryMB > maxMemory) { |
| // // maxMemory = memoryMB; |
| // // print(' heap: $maxMemory MB'); |
| // // // if (maxMemory > 2000) { |
| // // // writeHeapSnapshotToFile( |
| // // // '/Users/scheglov/dart/rwf-materials/2000.heap', |
| // // // ); |
| // // // // await Future<void>.delayed(const Duration(seconds: 10)); |
| // // // exit(0); |
| // // // } |
| // // } |
| // // maxMemory = max(maxMemory, usageInfo!.memoryMB); |
| // } |
| // } |
| // } |
| // timer.stop(); |
| // print('[time: ${timer.elapsedMilliseconds} ms]'); |
| // |
| // { |
| // var timer = Stopwatch()..start(); |
| // var chunks = await loadFromUri(Uri.parse('http://127.0.0.1:5000')); |
| // // final length = chunks |
| // // .map((e) => e.lengthInBytes) |
| // // .fold<int>(0, (prev, e) => prev + e); |
| // // print( |
| // // ' [${timer.elapsedMilliseconds} ms] ' |
| // // 'Downloaded heap snapshot, ${length / 1024 / 1024} MB.', |
| // // ); |
| // |
| // if (0 == 1) { |
| // final bytesBuilder = BytesBuilder(); |
| // for (final chunk in chunks) { |
| // bytesBuilder.add( |
| // chunk.buffer.asUint8List( |
| // chunk.offsetInBytes, |
| // chunk.lengthInBytes, |
| // ), |
| // ); |
| // } |
| // final bytes = bytesBuilder.toBytes(); |
| // final path = '/Users/scheglov/tmp/01.heap_snapshot'; |
| // File(path).writeAsBytesSync(bytes); |
| // final lengthStr = (bytes.length / 1024 / 1024).toStringAsFixed(2); |
| // print('Stored $lengthStr MB into $path'); |
| // } |
| // |
| // final graph = HeapSnapshotGraph.fromChunks(chunks); |
| // print(' [${timer.elapsedMilliseconds} ms] Created HeapSnapshotGraph.'); |
| // print(' externalSize: ${graph.externalSize}'); |
| // print(' shallowSize: ${graph.shallowSize}'); |
| // print(' Objects: ${graph.objects.length}'); |
| // |
| // final analysis = Analysis(graph); |
| // print(' [${timer.elapsedMilliseconds} ms] Created Analysis.'); |
| // |
| // { |
| // print('All objects.'); |
| // final objects = analysis.reachableObjects; |
| // final stats = analysis.generateObjectStats(objects); |
| // print(formatHeapStats(stats, maxLines: 20)); |
| // print(''); |
| // } |
| // |
| // { |
| // print('FileState(s)'); |
| // var fileStateList = analysis.filter( |
| // analysis.reachableObjects, |
| // (object) { |
| // return object.klass.name == 'FileState'; |
| // }, |
| // ); |
| // analysis.printObjectStats(fileStateList); |
| // print(''); |
| // final allObjects = analysis.transitiveGraph(fileStateList); |
| // analysis.printObjectStats(allObjects); |
| // print(''); |
| // } |
| // |
| // if (0 == 1) { |
| // print('Instances of: _SimpleUri'); |
| // final uriList = analysis.filterByClassPatterns( |
| // analysis.reachableObjects, |
| // ['_SimpleUri'], |
| // ); |
| // final stats = analysis.generateObjectStats(uriList); |
| // print(formatHeapStats(stats, maxLines: 20)); |
| // print(''); |
| // |
| // final uriStringList = analysis.findReferences(uriList, [':_uri']); |
| // |
| // // TODO(scheglov) Restore |
| // final uniqueUriStrSet = Set<String>(); |
| // for (final objectId in uriStringList) { |
| // var object = graph.objects[objectId]; |
| // var uriStr = object.data as String; |
| // if (!uniqueUriStrSet.add(uriStr)) { |
| // throw StateError('Duplicate URI: $uriStr'); |
| // } |
| // } |
| // |
| // final dstats = analysis.generateDataStats(uriStringList); |
| // print(formatDataStats(dstats, maxLines: 20)); |
| // } |
| // |
| // if (0 == 0) { |
| // print('Instances of: LibraryElementImpl'); |
| // final uriList = analysis.filterByClassPatterns( |
| // analysis.reachableObjects, |
| // ['LibraryElementImpl'], |
| // ); |
| // final stats = analysis.generateObjectStats(uriList); |
| // print(formatHeapStats(stats, maxLines: 20)); |
| // print(''); |
| // } |
| // |
| // if (0 == 0) { |
| // print('Instances of: _GrowableList'); |
| // final objectList = analysis.filter(analysis.reachableObjects, (object) { |
| // return object.klass.libraryUri == Uri.parse('dart:core') && |
| // object.klass.name == '_GrowableList'; |
| // // return analysis.variableLengthOf(object) == 0; |
| // }); |
| // |
| // // final objectList = analysis.filterByClassPatterns( |
| // // analysis.reachableObjects, |
| // // ['_GrowableList'], |
| // // ); |
| // final stats = analysis.generateObjectStats(objectList); |
| // print(formatHeapStats(stats, maxLines: 20)); |
| // print(''); |
| // |
| // const maxEntries = 10; |
| // final paths = analysis.retainingPathsOf(objectList, 10); |
| // for (int i = 0; i < paths.length; ++i) { |
| // if (maxEntries != -1 && i >= maxEntries) break; |
| // final path = paths[i]; |
| // print('There are ${path.count} retaining paths of'); |
| // print(formatRetainingPath(analysis.graph, paths[i])); |
| // print(''); |
| // } |
| // |
| // { |
| // print('Instances of empty: _GrowableList'); |
| // final emptyList = analysis.filter(objectList, (object) { |
| // return analysis.variableLengthOf(object) == 0; |
| // }); |
| // final stats = analysis.generateObjectStats(emptyList); |
| // print(formatHeapStats(stats, maxLines: 20)); |
| // print(''); |
| // |
| // // final paths = analysis.retainingPathsOf(emptyList, 10); |
| // // for (int i = 0; i < paths.length; ++i) { |
| // // if (maxEntries != -1 && i >= maxEntries) break; |
| // // final path = paths[i]; |
| // // print('There are ${path.count} retaining paths of'); |
| // // print(formatRetainingPath(analysis.graph, paths[i])); |
| // // print(''); |
| // // } |
| // } |
| // // final dstats = analysis.generateDataStats(uriStringList); |
| // // print(formatDataStats(dstats, maxLines: 20)); |
| // } |
| // } |
| // |
| // break; |
| // |
| // // writeHeapSnapshotToFile( |
| // // '/Users/scheglov/dart/rwf-materials/2001.heap', |
| // // ); |
| // } |
| // |
| // // var analysisContext = collection.contextFor(path); |
| // // var unitResult = await analysisContext.currentSession.getResolvedUnit(path); |
| // // unitResult as ResolvedUnitResult; |
| // |
| // // await Future<void>.delayed(const Duration(days: 1)); |
| // } |
| // |
| // extension on Analysis { |
| // void printObjectStats(IntSet objectIds) { |
| // final stats = generateObjectStats(objectIds); |
| // print(formatHeapStats(stats, maxLines: 20)); |
| // print(''); |
| // } |
| // |
| // void printRetainers( |
| // IntSet objectIds, { |
| // int maxEntries = 3, |
| // }) { |
| // final paths = retainingPathsOf(objectIds, 20); |
| // for (int i = 0; i < paths.length; ++i) { |
| // if (i >= maxEntries) break; |
| // final path = paths[i]; |
| // print('There are ${path.count} retaining paths of'); |
| // print(formatRetainingPath(graph, paths[i])); |
| // print(''); |
| // } |
| // } |
| // |
| // IntSet filterByClass( |
| // IntSet objectIds, { |
| // required Uri libraryUri, |
| // required String name, |
| // }) { |
| // return filter(reachableObjects, (object) { |
| // return object.klass.libraryUri == libraryUri && object.klass.name == name; |
| // }); |
| // } |
| // } |
