Measure time spent running pub

pkg/analysis_server/lib/src/context_manager.dart

 // Copyright (c) 2014, 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 context.directory.manager;
 
 import 'dart:async';
 import 'dart:collection';
 
+import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/source/package_map_provider.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:path/path.dart' as pathos;
 import 'package:watcher/watcher.dart';
 
@@ skipping 299 matching lines @@
    * Compute the appropriate package URI resolver for [folder], and store
    * dependency information in [info]. Return `null` if no package map can
    * be computed.
    */
   UriResolver _computePackageUriResolver(Folder folder, _ContextInfo info) {
     if (info.packageRoot != null) {
       info.packageMapDependencies = new Set<String>();
       return new PackageUriResolver([new JavaFile(info.packageRoot)]);
     } else {
       beginComputePackageMap();
-      PackageMapInfo packageMapInfo =
-          _packageMapProvider.computePackageMap(folder);
+      PackageMapInfo packageMapInfo;
+      ServerPerformanceStatistics.pub.makeCurrentWhile(() {
+        packageMapInfo = _packageMapProvider.computePackageMap(folder);
+      });
       endComputePackageMap();
       info.packageMapDependencies = packageMapInfo.dependencies;
       if (packageMapInfo.packageMap == null) {
         return null;
       }
       return new PackageMapUriResolver(
           resourceProvider,
           packageMapInfo.packageMap);
       // TODO(paulberry): if any of the dependencies is outside of [folder],
       // we'll need to watch their parent folders as well.
@@ skipping 13 matching lines @@
     _contexts[folder] = info;
     info.changeSubscription = folder.changes.listen((WatchEvent event) {
       _handleWatchEvent(folder, info, event);
     });
     UriResolver packageUriResolver = _computePackageUriResolver(folder, info);
     info.context = addContext(folder, packageUriResolver);
     return info;
   }
 
   /**
-   * Create a new context associated with the given [folder]. The [pubspecFile]
-   * is the `pubspec.yaml` file contained in the folder. Add any sources that
-   * are not included in one of the [children] to the context.
-   */
-  _ContextInfo _createContextWithSources(Folder folder, File pubspecFile,
-      List<_ContextInfo> children) {
-    _ContextInfo info = _createContext(folder, pubspecFile, children);
-    ChangeSet changeSet = new ChangeSet();
-    _addSourceFiles(changeSet, folder, info);
-    applyChangesToContext(folder, changeSet);
-    return info;
-  }
-
-  /**
    * Creates a new context associated with [folder].
    *
    * If there are subfolders with 'pubspec.yaml' files, separate contexts
    * are created for them, and excluded from the context associated with
    * [folder].
    *
    * If [folder] itself contains a 'pubspec.yaml' file, subfolders are ignored.
    *
    * If [withPubspecOnly] is `true`, a context will be created only if there
    * is a 'pubspec.yaml' file in [folder].
@@ skipping 19 matching lines @@
     // no pubspec, done
     if (withPubspecOnly) {
       return children;
     }
     // OK, create a context without a pubspec
     _createContextWithSources(folder, pubspecFile, children);
     return children;
   }
 
   /**
+   * Create a new context associated with the given [folder]. The [pubspecFile]
+   * is the `pubspec.yaml` file contained in the folder. Add any sources that
+   * are not included in one of the [children] to the context.
+   */
+  _ContextInfo _createContextWithSources(Folder folder, File pubspecFile,
+      List<_ContextInfo> children) {
+    _ContextInfo info = _createContext(folder, pubspecFile, children);
+    ChangeSet changeSet = new ChangeSet();
+    _addSourceFiles(changeSet, folder, info);
+    applyChangesToContext(folder, changeSet);
+    return info;
+  }
+
+  /**
    * Clean up and destroy the context associated with the given folder.
    */
   void _destroyContext(Folder folder) {
     _contexts[folder].changeSubscription.cancel();
     _contexts.remove(folder);
     removeContext(folder);
   }
 
   /**
    * Extract a new [pubspecFile]-based context from [oldInfo].
@@ skipping 272 matching lines @@
     return excludes(resource.path);
   }
 
   /**
    * Returns `true` if [path] is the pubspec file of this context.
    */
   bool isPubspec(String path) {
     return path == pubspecPath;
   }
 }