blob: eb21228663ad2ced59695a53c5b3b0e5f7cb00bc [file] [log] [blame]
//@ requireOptions("--useWeakRefs=1")
// 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
load("./resources/v8-mjsunit.js", "caller relative");
let called = false;
let cleanup = function(holdings) {
// See which target we're cleaning up and unregister the other one.
if (holdings == 1) {
let success = fg.unregister(key2);
assertTrue(success || called);
} else {
assertSame(holdings, 2);
let success = fg.unregister(key1);
assertTrue(success || called);
}
called = true;
}
let fg = new FinalizationRegistry(cleanup);
let key1 = {"k": "first key"};
let key2 = {"k": "second key"};
// Create two objects and register them in the FinalizationRegistry. The objects
// need to be inside a closure so that we can reliably kill them!
(function() {
for (let i = 0; i < 1000; ++i) {
let object1 = {};
fg.register(object1, 1, key1);
let object2 = {};
fg.register(object2, 2, key2);
}
})();
// This GC will reclaim target objects and schedule cleanup.
gc();
assertFalse(called);
// Assert that the cleanup function was called and cleaned up one holdings (but not the other one).
let timeout_func = function() {
assertTrue(called);
}
setTimeout(timeout_func, 0);