Version 1.1.0-dev.5.2

dart/tools/tracesummary.dart

Index: dart/tools/tracesummary.dart
===================================================================
--- dart/tools/tracesummary.dart	(revision 31530)
+++ dart/tools/tracesummary.dart	(working copy)
@@ -1,163 +0,0 @@
-// Copyright (c) 2013, 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.
-
-// Print a summary of a profile trace.
-
-import 'dart:convert';
-import 'dart:io';
-
-class TraceSymbol {
-  final String name;
-  int exclusive = 0;
-  int inclusive = 0;
-  TraceSymbol(this.name);
-}
-
-class TraceSummary {
-  final int numSymbols;
-
-  Map<String, TraceSymbol> _symbols = {};
-  List _events = [];
-  List<TraceSymbol> _stack = [];
-  List<TraceSymbol> _topExclusive = [];
-  List<TraceSymbol> _topInclusive = [];
-  bool _marked = false;
-  int _totalSamples = 0;
-
-  TraceSummary(this.numSymbols);
-
-  void _processEventsFromFile(String name) {
-    var file = new File(name);
-    var events = [];
-    try {
-      var contents = file.readAsStringSync();
-      events = JSON.decode(contents);
-    } catch (e) {
-      print('Exception for $name $e');
-    }
-    _processEvents(events);
-  }
-
-  void _processBegin(Map event) {
-    var name = event['name'];
-    if (name == '<no frame>') {
-      return;
-    }
-    var symbol = _symbols[name];
-    if (symbol == null) {
-      symbol = new TraceSymbol(name);
-      _symbols[name] = symbol;
-    }
-    _stack.add(symbol);
-    _marked = false;
-  }
-
-  void _processEnd(Map event) {
-    var name = event['name'];
-    if (name == '<no frame>') {
-      return;
-    }
-    var symbol = _stack.last;
-    if (symbol.name != name) {
-      throw new StateError('$name not found at top of stack.');
-    }
-    if ((_stack.length > 1) && (_marked == false)) {
-      // We are transitioning from the sequence of begins to the sequence
-      // of ends. Mark the symbols on the stack.
-      _marked = true;
-      _totalSamples++;
-      // Mark all symbols except the top with an inclusive tick.
-      for (int i = 1; i < _stack.length; i++) {
-        _stack[i].inclusive++;
-      }
-      _stack.last.exclusive++;
-    }
-    _stack.removeLast();
-  }
-
-  void _processEvents(List events) {
-    for (var i = 0; i < events.length; i++) {
-      Map event = events[i];
-      if (event['ph'] == 'M') {
-        // Ignore.
-      } else if (event['ph'] == 'B') {
-        _processBegin(event);
-      } else if (event['ph'] == 'E') {
-        _processEnd(event);
-      }
-    }
-  }
-
-  void _findTopExclusive() {
-    _topExclusive = _symbols.values.toList();
-    _topExclusive.sort((a, b) {
-      return b.exclusive - a.exclusive;
-    });
-  }
-
-
-  void _findTopInclusive() {
-    _topInclusive = _symbols.values.toList();
-    _topInclusive.sort((a, b) {
-      return b.inclusive - a.inclusive;
-    });
-  }
-
-  void summarize(String input) {
-    _processEventsFromFile(input);
-    _findTopExclusive();
-    _findTopInclusive();
-    _print();
-  }
-
-  String _pad(String input, int minLength) {
-    int length = input.length;
-    for (int i = 0; i < minLength - length; i++) {
-      input = ' $input';
-    }
-    return input;
-  }
-
-  static const TICKS_LENGTH = 10;
-  static const PERCENT_LENGTH = 7;
-
-  void _printSymbol(int t, String name) {
-    String ticks = t.toString();
-    ticks = _pad(ticks, TICKS_LENGTH);
-    double total = (t / _totalSamples);
-    String percent = (total * 100.0).toStringAsFixed(2);
-    percent = _pad(percent, PERCENT_LENGTH);
-    print('$ticks  $percent  $name');
-  }
-
-  void _print() {
-    print('Top ${numSymbols} inclusive symbols');
-    print('--------------------------');
-    print('     ticks  percent  name');
-    _topInclusive.getRange(0, numSymbols).forEach((a) {
-      _printSymbol(a.inclusive, a.name);
-    });
-    print('');
-    print('Top ${numSymbols} exclusive symbols');
-    print('--------------------------');
-    print('     ticks  percent  name');
-    _topExclusive.getRange(0, numSymbols).forEach((a) {
-      _printSymbol(a.exclusive, a.name);
-    });
-  }
-}
-
-main(List<String> arguments) {
-  if (arguments.length < 1) {
-    print('${Platform.executable} ${Platform.script} <input> [symbol count]');
-    return;
-  }
-  String input = arguments[0];
-  int numSymbols = 10;
-  if (arguments.length >= 2) {
-    numSymbols = int.parse(arguments[1]);
-  }
-  TraceSummary ts = new TraceSummary(numSymbols);
-  ts.summarize(input);
-}