blob: 07f5539e0e9e0f99bacccbda958dbc56a6ee5b29 [file] [log] [blame]
// Copyright (c) 2022, 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.
/// @assertion void attach(
/// Object value,
/// T finalizationToken,
/// {Object? detach}
/// )
/// Attaches this finalizer to [value].
/// When [value] is longer accessible to the program, while still having an
/// attachment to this finalizer, the [callback] of this finalizer may be
/// called with [finalizationToken] as argument.
/// @description Checks that generic finalizer can be attached to the different
/// objects and token is passed as a callback function parameter when object
/// becomes inaccessible.
/// @author
import '../../gc_utils_lib.dart';
import '../../../../Utils/expect.dart';
class A {}
Object? returnedToken;
int cnt = 0;
final Finalizer<int> finalizer = Finalizer((token) {
returnedToken = token;
void attachToFinalizer(Object value, int finalizationToken) {
finalizer.attach(value, finalizationToken);
main() async {
attachToFinalizer(Object(), 1);
await triggerGcWithDelay();
Expect.equals(1, returnedToken);
attachToFinalizer(A(), 15);
await triggerGcWithDelay();
Expect.equals(15, returnedToken);
await triggerGcWithDelay();
Expect.equals(15, returnedToken);
attachToFinalizer(A(), 14);
await triggerGcWithDelay();
Expect.equals(14, returnedToken);
Expect.equals(3, cnt);
await triggerGcWithDelay();
await triggerGcWithDelay();
await triggerGcWithDelay();
Expect.equals(3, cnt);