v8/test/mjsunit/harmony/weakrefs/cleanupsome-weakcell.js
Marja Hölttä 1ed5214c8c [js weak refs] Add WeakFactory.prototype.cleanupSome
BUG=v8:8179

Change-Id: I7dc024fe4880a787cadac8b79bca6da87e2d36de
Reviewed-on: https://chromium-review.googlesource.com/c/1328926
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57476}
2018-11-13 14:56:14 +00:00

34 lines
809 B
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
let cleanup_count = 0;
let cleanup_cells = [];
let cleanup = function(iter) {
for (wc of iter) {
cleanup_cells.push(wc);
}
++cleanup_count;
}
let wf = new WeakFactory(cleanup);
let weak_cell;
(function() {
let o = {};
weak_cell = wf.makeCell(o);
// cleanupSome won't do anything since there are no dirty WeakCells.
wf.cleanupSome();
assertEquals(0, cleanup_count);
})();
// GC will detect the WeakCell as dirty.
gc();
wf.cleanupSome();
assertEquals(1, cleanup_count);
assertEquals(1, cleanup_cells.length);
assertEquals(weak_cell, cleanup_cells[0]);