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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 dart2js.stress; | 5 library dart2js.stress; |
6 import "dart2js.dart" as dart2js; | 6 import "dart2js.dart" as dart2js; |
7 | 7 |
8 const ITERATIONS_FLAG_PREFIX = "--iterations="; | 8 const ITERATIONS_FLAG_PREFIX = "--iterations="; |
9 void main(List<String> args) { | 9 void main(List<String> args) { |
10 print("Reminder: for best performance, " | |
11 "dart2js should be run with the VM flag --heap_growth_rate=512"); | |
12 Stopwatch sw = new Stopwatch(); | 10 Stopwatch sw = new Stopwatch(); |
13 int count = 0; | 11 int count = 0; |
14 int maxCount = null; | 12 int maxCount = null; |
15 if (args.isNotEmpty && args[0].startsWith(ITERATIONS_FLAG_PREFIX)) { | 13 if (args.isNotEmpty && args[0].startsWith(ITERATIONS_FLAG_PREFIX)) { |
16 maxCount = int.parse(args[0].substring(ITERATIONS_FLAG_PREFIX.length)); | 14 maxCount = int.parse(args[0].substring(ITERATIONS_FLAG_PREFIX.length)); |
17 args = args.sublist(1); | 15 args = args.sublist(1); |
18 } | 16 } |
19 if (maxCount == null) { | 17 if (maxCount == null) { |
20 print("Running indefinitely.\n" | 18 print("Running indefinitely.\n" |
21 "Use '$ITERATIONS_FLAG_PREFIX<count>' to set a repetition count" | 19 "Use '$ITERATIONS_FLAG_PREFIX<count>' to set a repetition count" |
22 " (as first flag)."); | 20 " (as first flag)."); |
23 } | 21 } |
24 args = ["--suppress-warnings", "--suppress-hints"]..addAll(args); | 22 args = ["--suppress-warnings", "--suppress-hints"]..addAll(args); |
25 void iterate() { | 23 void iterate() { |
26 count++; | 24 count++; |
27 sw.reset(); | 25 sw.reset(); |
28 sw.start(); | 26 sw.start(); |
29 dart2js.internalMain(args) | 27 dart2js.internalMain(args) |
30 .then((_) { | 28 .then((_) { |
31 print("$count: ${sw.elapsedMilliseconds}ms"); | 29 print("$count: ${sw.elapsedMilliseconds}ms"); |
32 }) | 30 }) |
33 .then((_) { | 31 .then((_) { |
34 if (maxCount == null || count < maxCount) { | 32 if (maxCount == null || count < maxCount) { |
35 iterate(); | 33 iterate(); |
36 } | 34 } |
37 }); | 35 }); |
38 } | 36 } |
39 iterate(); | 37 iterate(); |
40 } | 38 } |
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