| // 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 |
| /// attachement to this finalizer, the [callback] of this finalizer may be |
| /// called with [finalizationToken] as argument. |
| /// |
| /// @description Checks that generic finalizer with the given [detach] token can |
| /// be detached from the object. |
| /// @author iarkh@unipro.ru |
| |
| import '../../gc_utils_lib.dart'; |
| import '../../../../Utils/expect.dart'; |
| |
| class A {} |
| |
| int cnt = 0; |
| final Finalizer<Object> finalizer = Finalizer((token) { |
| cnt++; |
| }); |
| |
| main() async { |
| A detachToken = A(); |
| { |
| Object value = Object(); |
| finalizer.attach(value, "Finalization token", detach: detachToken); |
| value = Object(); |
| } |
| finalizer.detach(detachToken); |
| await triggerGcWithDelay(); |
| Expect.equals(0, cnt); |
| } |