Add two memory usage benchmarks

pkg/analysis_server/benchmark/perf/benchmark_local.dart

 // Copyright (c) 2016, 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.
 
 library server.performance.local;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 
 import 'benchmark_scenario.dart';
+import 'memory_tests.dart';
 
 main(List<String> args) async {
   int length = args.length;
   if (length < 1) {
     print(
         'Usage: dart benchmark_local.dart path_to_sdk_checkout [path_to_flutter_checkout]');
     return;
   } else if (length == 1) {
     paths = new PathHolder(sdkPath: args[0]);
   } else {
     paths = new PathHolder(sdkPath: args[0], flutterPath: args[1]);
   }
   String now = new DateTime.now().toUtc().toIso8601String();
   print('Benchmark started: $now');
   print('');
   print('');
   await run_local_initialAnalysis_1();
   await run_local_initialAnalysis_2();
   await run_local_initialAnalysis_3();
   await run_local_change_1();
   await run_local_change_2();
   await run_local_completion_1();
   await run_local_completion_2();
   await run_local_completion_3();
   await run_local_completion_4();
   await run_local_refactoring_1();
+
+  await run_memory_initialAnalysis_1();
+  await run_memory_initialAnalysis_2();
 }
 
 PathHolder paths;
 
 Future run_local_change_1() async {
   String id = 'local-change-1';
   String description = r'''
 1. Open 'analyzer'.
 2. Change a method body in src/task/dart.dart.
 3. Measure the time to finish analysis.
@@ skipping 169 matching lines @@
           file: '${paths.analyzer}/lib/src/context/cache.dart',
           fileChange: new FileChange(
               afterStr: 'getState(An', afterStrBack: 3, insertStr: 'NewName'),
           refactoringAtStr: 'getSourcesWithFullName(String path)',
           refactoringKind: RefactoringKind.RENAME,
           refactoringOptions: new RenameOptions('getSourcesWithFullName2'),
           numOfRepeats: 5);
   printBenchmarkResults(id, description, times);
 }
 
+Future run_memory_initialAnalysis_1() async {
+  String id = 'memory-initialAnalysis-1';
+  String description = r'''
+1. Start server, set 'analyzer' and 'analysis_server' analysis roots.

[scheglov, 2016/07/06 17:55:04]

I as can see, we set only "analyzer" as the analysis root.

+2. Measure the memory usage after finishing initial analysis.
+3. Shutdown the server.
+4. Go to (1).
+''';
+  List<int> sizes = await AnalysisServerMemoryUsageTest
+      .start_waitInitialAnalysis_shutdown(
+          roots: <String>[paths.analyzer], numOfRepeats: 3);
+  printMemoryResults(id, description, sizes);
+}
+
+Future run_memory_initialAnalysis_2() async {
+  String id = 'memory-initialAnalysis-2';
+  String description = r'''
+1. Start server, set 'analyzer' and 'analysis_server' analysis roots.
+2. Measure the memory usage after finishing initial analysis.
+3. Shutdown the server.
+4. Go to (1).
+''';
+  List<int> sizes = await AnalysisServerMemoryUsageTest
+      .start_waitInitialAnalysis_shutdown(
+          roots: <String>[paths.analyzer, paths.analysisServer],
+          numOfRepeats: 3);
+  printMemoryResults(id, description, sizes);
+}
+
 class PathHolder {
   String analysisServer;
   String analyzer;
   String flutterHelloWorld;
   String flutterStocks;
 
   PathHolder({String sdkPath, String flutterPath}) {
     analysisServer = '$sdkPath/pkg/analysis_server';
     analyzer = '$sdkPath/pkg/analyzer';
     flutterHelloWorld = '$flutterPath/examples/hello_world';
     flutterStocks = '$flutterPath/examples/stocks';
   }
 }