| // 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 |
| |
| let cleanup_call_count = 0; |
| let cleanup_holdings_count = 0; |
| let cleanup = function(holdings) { |
| ++cleanup_holdings_count; |
| ++cleanup_call_count; |
| } |
| |
| let fg1 = new FinalizationRegistry(cleanup); |
| let fg2 = new FinalizationRegistry(cleanup); |
| |
| // Create two objects and register them in FinalizationRegistries. The objects need |
| // to be inside a closure so that we can reliably kill them! |
| |
| (function() { |
| let object1 = {}; |
| fg1.register(object1, "holdings1"); |
| |
| let object2 = {}; |
| fg2.register(object2, "holdings2"); |
| |
| // object1 and object2 go out of scope. |
| })(); |
| |
| // This GC will discover dirty WeakCells and schedule cleanup. |
| gc(); |
| assertEquals(0, cleanup_call_count); |
| |
| // Assert that the cleanup function was called. |
| let timeout_func = function() { |
| assertEquals(2, cleanup_call_count); |
| assertEquals(2, cleanup_holdings_count); |
| } |
| |
| setTimeout(timeout_func, 0); |
