New analyzer snapshot.

pkg/analyzer/lib/src/generated/source_io.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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.source.io;
 
 import 'source.dart';
 import 'java_core.dart';
 import 'java_io.dart';
 import 'utilities_general.dart';
+import 'instrumentation.dart';
 import 'engine.dart';
 export 'source.dart';
 
 /**
  * Instances of the class [DirectoryBasedSourceContainer] represent a source container that
  * contains all sources within a given directory.
  */
 class DirectoryBasedSourceContainer implements SourceContainer {
   /**
    * Append the system file separator to the given path unless the path already ends with a
@@ skipping 94 matching lines @@
 
   @override
   bool exists() => file.isFile();
 
   @override
   TimestampedData<String> get contents {
     TimeCounter_TimeCounterHandle handle = PerformanceStatistics.io.start();
     try {
       return contentsFromFile;
     } finally {
-      handle.stop();
+      _reportIfSlowIO(handle.stop());
     }
   }
 
   @override
   String get encoding {
     if (_encoding == null) {
       _encoding = "${new String.fromCharCode(uriKind.encoding)}${file.toURI().toString()}";
     }
     return _encoding;
   }
@@ skipping 38 matching lines @@
    * because contexts can have local overrides of the content of a source that the source is not
    * aware of.
    *
    * @return the contents of the source paired with the modification stamp of the source
    * @throws Exception if the contents of this source could not be accessed
    * @see #getContents()
    */
   TimestampedData<String> get contentsFromFile {
     return new TimestampedData<String>(file.lastModified(), file.readAsStringSync());
   }
+
+  /**
+   * Record the time the IO took if it was slow
+   */
+  void _reportIfSlowIO(int nanos) {
+    //If slower than 10ms
+    if (nanos > 10 * TimeCounter.NANOS_PER_MILLI) {
+      InstrumentationBuilder builder = Instrumentation.builder2("SlowIO");
+      try {
+        builder.data3("fileName", fullName);
+        builder.metric2("IO-Time-Nanos", nanos);
+      } finally {
+        builder.log();
+      }
+    }
+  }
 }
 
 /**
  * Instances of the class `FileUriResolver` resolve `file` URI's.
  */
 class FileUriResolver extends UriResolver {
   /**
    * The name of the `file` scheme.
    */
   static String FILE_SCHEME = "file";
@@ skipping 312 matching lines @@
       for (JavaFile dir in _relativeDirectories) {
         JavaFile file = new JavaFile.relative(dir, filePath);
         if (file.exists()) {
           return new FileBasedSource.con2(file, UriKind.FILE_URI);
         }
       }
     }
     return null;
   }
 }