Add timing info for file IO into Dart based analyzer.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//179123010

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@33191 260f80e4-7a28-3924-810f-c04153c831b5

pkg/analyzer/bin/analyzer.dart

@@ -33,12 +33,14 @@ void main(args) {
 
     if (options.perf) {
       int totalTime = JavaSystem.currentTimeMillis() - startTime;
+      int ioTime = PerformanceStatistics.io.result;
       int scanTime = PerformanceStatistics.scan.result;
       int parseTime = PerformanceStatistics.parse.result;
       int resolveTime = PerformanceStatistics.resolve.result;
       int errorsTime = PerformanceStatistics.errors.result;
       int hintsTime = PerformanceStatistics.hints.result;
       int angularTime = PerformanceStatistics.angular.result;
+      print("io:$ioTime");
       print("scan:$scanTime");
       print("parse:$parseTime");
       print("resolve:$resolveTime");
@@ -46,7 +48,7 @@ void main(args) {
       print("hints:$hintsTime");
       print("angular:$angularTime");
       print("other:${totalTime
-        - (scanTime + parseTime + resolveTime + errorsTime + hintsTime
+        - (ioTime + scanTime + parseTime + resolveTime + errorsTime + hintsTime
            + angularTime)}");
       print("total:$totalTime");
       print("");

pkg/analyzer/lib/src/generated/engine.dart

@@ -8600,6 +8600,11 @@ class PerformanceStatistics {
    */
   static TimeCounter angular = new TimeCounter();
 
+  /**
+   * The [TimeCounter] for time spent in reading files.
+   */
+  static TimeCounter io = new TimeCounter();
+
   /**
    * The [TimeCounter] for time spent in scanning.
    */

pkg/analyzer/lib/src/generated/source_io.dart

@@ -10,7 +10,8 @@ library engine.source.io;
 import 'source.dart';
 import 'java_core.dart';
 import 'java_io.dart';
-import 'engine.dart' show AnalysisContext, AnalysisEngine, TimestampedData;
+import 'engine.dart';
+import 'utilities_general.dart';
 export 'source.dart';
 
 /**
@@ -101,10 +102,22 @@ class FileBasedSource implements Source {
 
   bool exists() => _file.isFile();
 
-  TimestampedData<String> get contents => contentsFromFile;
+  TimestampedData<String> get contents {
+    TimeCounter_TimeCounterHandle handle = PerformanceStatistics.io.start();
+    try {
+      return contentsFromFile;
+    } finally {
+      handle.stop();
+    }
+  }
 
   void getContentsToReceiver(Source_ContentReceiver receiver) {
-    getContentsFromFileToReceiver(receiver);
+    TimeCounter_TimeCounterHandle handle = PerformanceStatistics.io.start();
+    try {
+      getContentsFromFileToReceiver(receiver);
+    } finally {
+      handle.stop();
+    }
   }
 
   String get encoding {

pkg/analyzer/pubspec.yaml

@@ -1,5 +1,5 @@
 name: analyzer
-version: 0.13.0-dev
+version: 0.13.0-dev.1
 author: Dart Team <misc@dartlang.org>
 description: Static analyzer for Dart.
 homepage: http://www.dartlang.org