ea526196f4
This replaces WeakFactory with FinalizationGroup. New API is here: https://weakrefs.netlify.com/ BUG=v8:8179 Change-Id: I8c1c4a70deb42581d17117423dd29d93bdd35cb0 Reviewed-on: https://chromium-review.googlesource.com/c/1435938 Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org> Commit-Queue: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#59204}
72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
// 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
|
|
// Flags: --no-stress-flush-bytecode
|
|
|
|
let cleanup0_call_count = 0;
|
|
let cleanup0_holdings_count = 0;
|
|
|
|
let cleanup1_call_count = 0;
|
|
let cleanup1_holdings_count = 0;
|
|
|
|
let cleanup0 = function(iter) {
|
|
for (holdings of iter) {
|
|
++cleanup0_holdings_count;
|
|
}
|
|
++cleanup0_call_count;
|
|
}
|
|
|
|
let cleanup1 = function(iter) {
|
|
for (holdings of iter) {
|
|
++cleanup1_holdings_count;
|
|
}
|
|
++cleanup1_call_count;
|
|
}
|
|
|
|
let fg0 = new FinalizationGroup(cleanup0);
|
|
let fg1 = new FinalizationGroup(cleanup1);
|
|
|
|
// Register 1 weak reference for each FinalizationGroup 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
|
|
// FinalizationGroups 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(1, cleanup0_call_count);
|
|
assertEquals(2, cleanup0_holdings_count);
|
|
assertEquals(1, cleanup1_call_count);
|
|
assertEquals(2, cleanup1_holdings_count);
|
|
}
|
|
|
|
// Give the cleanup task a chance to run. All holdings will be iterated during
|
|
// the same invocation of the cleanup function.
|
|
setTimeout(timeout_func, 0);
|