blob: 7ad7daef4256c5d4901842a3f787736375ce29be [file] [log] [blame]
// Copyright (c) 2011, 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.
// Based on dartbug.com/7681
// Verify that context chains do not lead to unintended memory being held.
library closure_cycles_test;
import "dart:async";
class X {
late Function onX;
X() {
Timer.run(() => onX(new Y()));
}
}
class Y {
late Function onY;
var heavyMemory;
static var count = 0;
Y() {
// Consume large amounts of memory per iteration to fail/succeed quicker.
heavyMemory = new List.filled(10 * 1024 * 1024, null);
// Terminate the test if we allocated enough memory without running out.
if (count++ > 100) return;
Timer.run(() => onY());
}
}
void doIt() {
var x = new X();
x.onX = (y) {
y.onY = () {
y; // Capturing y can lead to endless context chains!
doIt();
};
};
}
void main() {
doIt();
}