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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: --expose-gc --noincremental-marking
// Flags: --no-stress-flush-code
let cleanup0_call_count = 0;
let cleanup0_holdings_count = 0;
let cleanup1_call_count = 0;
let cleanup1_holdings_count = 0;
let cleanup0 = function(holdings) {
++cleanup0_holdings_count;
++cleanup0_call_count;
}
let cleanup1 = function(holdings) {
++cleanup1_holdings_count;
++cleanup1_call_count;
}
let fg0 = new FinalizationRegistry(cleanup0);
let fg1 = new FinalizationRegistry(cleanup1);
// Register 1 weak reference for each FinalizationRegistry and kill the objects they point to.
(function() {
// The objects need to be inside a closure so that we can reliably kill them.
let objects = [];
objects[0] = {};
objects[1] = {};
fg0.register(objects[0], "holdings0-0");
fg1.register(objects[1], "holdings1-0");
// Drop the references to the objects.
objects = [];
})();
// Will schedule both fg0 and fg1 for cleanup.
gc();
// Before the cleanup task has a chance to run, do the same thing again, so both
// FinalizationRegistries are (again) scheduled for cleanup. This has to be a IIFE function
// (so that we can reliably kill the objects) so we cannot use the same function
// as before.
(function() {
let objects = [];
objects[0] = {};
objects[1] = {};
fg0.register(objects[0], "holdings0-1");
fg1.register(objects[1], "holdings1-1");
objects = [];
})();
gc();
let timeout_func = function() {
assertEquals(2, cleanup0_call_count);
assertEquals(2, cleanup0_holdings_count);
assertEquals(2, cleanup1_call_count);
assertEquals(2, cleanup1_holdings_count);
}
// Give the cleanup task a chance to run.
setTimeout(timeout_func, 0);
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