Improved profiler view and inclusive profile tree

runtime/observatory/lib/utils.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 utils;
 
 import 'dart:math';
 
 class Utils {
+
+  static String formatPercentNormalized(double x) {
+    var percent = 100.0 * x;
+    return '${percent.toStringAsFixed(2)}%';
+  }
+
   static String formatPercent(num a, num total) {
-    var percent = 100.0 * (a / total);
-    return '${percent.toStringAsFixed(2)}%';
+    return formatPercentNormalized(a / total);
   }
 
   static String zeroPad(int value, int pad) {
     String prefix = "";
     while (pad > 1) {
       int pow10 = pow(10, pad - 1);
       if (value < pow10) {
         prefix = prefix + "0";
       }
       pad--;
@@ skipping 17 matching lines @@
     if (v != 0) {
       r = '$v,$r';
     }
     return r;
   }
 
   static String formatTimePrecise(double time) {
     if (time == null) {
       return "-";
     }
+    const millisPerSecond = 1000;
+
+    var millis = (time * millisPerSecond).round();
+    return formatTimeMilliseconds(millis);
+  }
+
+  static String formatTimeMilliseconds(int millis) {
     const millisPerHour = 60 * 60 * 1000;
     const millisPerMinute = 60 * 1000;
     const millisPerSecond = 1000;
 
-    var millis = (time * millisPerSecond).round();
-
     var hours = millis ~/ millisPerHour;
     millis = millis % millisPerHour;
 
     var minutes = millis ~/ millisPerMinute;
     millis = millis % millisPerMinute;
 
     var seconds = millis ~/ millisPerSecond;
     millis = millis % millisPerSecond;
 
     if (hours > 0) {
       return ("${zeroPad(hours,2)}"
-              ":${zeroPad(minutes,2)}"
+               ":${zeroPad(minutes,2)}"
+               ":${zeroPad(seconds,2)}"
+               ".${zeroPad(millis,3)}");
+    } else if (minutes > 0) {
+      return ("${zeroPad(minutes,2)}"
               ":${zeroPad(seconds,2)}"
               ".${zeroPad(millis,3)}");
     } else {
-      return ("${zeroPad(minutes,2)}"
-              ":${zeroPad(seconds,2)}"
+      return ("${zeroPad(seconds,2)}"
               ".${zeroPad(millis,3)}");
     }
   }
 
   static String formatSize(int bytes) {
     const int digits = 1;
     const int bytesPerKB = 1024;
     const int bytesPerMB = 1024 * bytesPerKB;
     const int bytesPerGB = 1024 * bytesPerMB;
     const int bytesPerTB = 1024 * bytesPerGB;
@@ skipping 36 matching lines @@
       return '${minutes}m ${seconds}s';
     }
     return '${seconds}s';
   }
 
   static String formatSeconds(double x) {
     return x.toStringAsFixed(2);
   }
 
   static bool runningInJavaScript() => identical(1.0, 1);
-}
+}