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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 // VMOptions=--old_gen_heap_size=64 | 5 // VMOptions=--old_gen_heap_size=64 |
6 | 6 |
7 library slow_consumer2_test; | 7 library slow_consumer2_test; |
8 | 8 |
9 import "package:expect/expect.dart"; | 9 import "package:expect/expect.dart"; |
10 import 'dart:async'; | 10 import 'dart:async'; |
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63 } | 63 } |
64 | 64 |
65 class DataProvider { | 65 class DataProvider { |
66 final int chunkSize; | 66 final int chunkSize; |
67 final int bytesPerSecond; | 67 final int bytesPerSecond; |
68 int sentCount = 0; | 68 int sentCount = 0; |
69 int targetCount; | 69 int targetCount; |
70 StreamController controller; | 70 StreamController controller; |
71 | 71 |
72 DataProvider(int this.bytesPerSecond, int this.targetCount, this.chunkSize) { | 72 DataProvider(int this.bytesPerSecond, int this.targetCount, this.chunkSize) { |
73 controller = new StreamController(onPauseStateChange: onPauseStateChange); | 73 controller = new StreamController( |
| 74 onPause: onPauseStateChange, |
| 75 onResume: onPauseStateChange); |
74 Timer.run(send); | 76 Timer.run(send); |
75 } | 77 } |
76 | 78 |
77 Stream get stream => controller.stream; | 79 Stream get stream => controller.stream; |
78 | 80 |
79 send() { | 81 send() { |
80 if (controller.isPaused) return; | 82 if (controller.isPaused) return; |
81 if (sentCount == targetCount) { | 83 if (sentCount == targetCount) { |
82 controller.close(); | 84 controller.close(); |
83 return; | 85 return; |
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112 // file). If the consumer doesn't pause the data-provider it will run out of | 114 // file). If the consumer doesn't pause the data-provider it will run out of |
113 // heap-space. | 115 // heap-space. |
114 | 116 |
115 new DataProvider(800 * MB, 100 * MB, 1 * MB).stream | 117 new DataProvider(800 * MB, 100 * MB, 1 * MB).stream |
116 .pipe(new SlowConsumer(200 * MB, 5 * MB)) | 118 .pipe(new SlowConsumer(200 * MB, 5 * MB)) |
117 .then((count) { | 119 .then((count) { |
118 port.close(); | 120 port.close(); |
119 Expect.equals(100 * MB, count); | 121 Expect.equals(100 * MB, count); |
120 }); | 122 }); |
121 } | 123 } |
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