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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-weak-refs --expose-gc --noincremental-marking --noincremental-marking
let cleanup_call_count = 0;
let cleanup = function(iter) {
++cleanup_call_count;
}
let fg = new FinalizationGroup(cleanup);
let key = {"k": "this is the key"};
// Create an object and register it in the FinalizationGroup. The object needs
// to be inside a closure so that we can reliably kill them!
(function() {
let object = {};
fg.register(object, "my holdings", key);
// Clear the WeakCell before the GC has a chance to discover it.
let success = fg.unregister(key);
assertTrue(success);
// object goes out of scope.
})();
// This GC will reclaim the target object.
gc();
assertEquals(0, cleanup_call_count);
// Assert that the cleanup function won't be called, since we called unregister.
let timeout_func = function() {
assertEquals(0, cleanup_call_count);
}
setTimeout(timeout_func, 0);
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