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Issue 14196003: Change StreamController constructor. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Address comments and rebase. Created 7 years, 8 months ago
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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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