OLD | NEW |
1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library dart_style.benchmark.benchmark; | 5 library dart_style.benchmark.benchmark; |
6 | 6 |
7 import 'dart:io'; | 7 import 'dart:io'; |
8 | 8 |
9 import 'package:path/path.dart' as p; | 9 import 'package:path/path.dart' as p; |
10 | 10 |
(...skipping 15 matching lines...) Expand all Loading... |
26 // us see how much variance there is. | 26 // us see how much variance there is. |
27 for (var i = 0; i <= NUM_TRIALS; i++) { | 27 for (var i = 0; i <= NUM_TRIALS; i++) { |
28 var start = new DateTime.now(); | 28 var start = new DateTime.now(); |
29 | 29 |
30 // For a single benchmark, format the source multiple times. | 30 // For a single benchmark, format the source multiple times. |
31 var result; | 31 var result; |
32 for (var j = 0; j < FORMATS_PER_TRIAL; j++) { | 32 for (var j = 0; j < FORMATS_PER_TRIAL; j++) { |
33 result = formatSource(); | 33 result = formatSource(); |
34 } | 34 } |
35 | 35 |
36 var elapsed = new DateTime.now() | 36 var elapsed = |
37 .difference(start).inMilliseconds / FORMATS_PER_TRIAL; | 37 new DateTime.now().difference(start).inMilliseconds / FORMATS_PER_TRIAL; |
38 | 38 |
39 // Keep track of the best run so far. | 39 // Keep track of the best run so far. |
40 if (elapsed >= best) continue; | 40 if (elapsed >= best) continue; |
41 best = elapsed; | 41 best = elapsed; |
42 | 42 |
43 // Sanity check to make sure the output is what we expect and to make sure | 43 // Sanity check to make sure the output is what we expect and to make sure |
44 // the VM doesn't optimize "dead" code away. | 44 // the VM doesn't optimize "dead" code away. |
45 if (result != expected) { | 45 if (result != expected) { |
46 print("Incorrect output:\n$result"); | 46 print("Incorrect output:\n$result"); |
47 exit(1); | 47 exit(1); |
(...skipping 24 matching lines...) Expand all Loading... |
72 result = " " * (length - result.length) + result; | 72 result = " " * (length - result.length) + result; |
73 } | 73 } |
74 | 74 |
75 return result; | 75 return result; |
76 } | 76 } |
77 | 77 |
78 String formatSource() { | 78 String formatSource() { |
79 var formatter = new DartFormatter(); | 79 var formatter = new DartFormatter(); |
80 return formatter.format(source); | 80 return formatter.format(source); |
81 } | 81 } |
OLD | NEW |