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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: --harmony-weak-refs --expose-gc --noincremental-marking
// Flags: --no-stress-flush-bytecode
let cleanup0_call_count = 0;
let cleanup0_weak_cell_count = 0;
let cleanup1_call_count = 0;
let cleanup1_weak_cell_count = 0;
let cleanup0 = function(iter) {
for (wc of iter) {
++cleanup0_weak_cell_count;
}
++cleanup0_call_count;
}
let cleanup1 = function(iter) {
for (wc of iter) {
++cleanup1_weak_cell_count;
}
++cleanup1_call_count;
}
let wf0 = new WeakFactory(cleanup0);
let wf1 = new WeakFactory(cleanup1);
// Create 1 WeakCell for each WeakFactory 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] = {};
wf0.makeCell(objects[0]);
wf1.makeCell(objects[1]);
// Drop the references to the objects.
objects = [];
// Will schedule both wf0 and wf1 for cleanup.
gc();
})();
// Before the cleanup task has a chance to run, do the same thing again, so both
// factories 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] = {};
wf0.makeCell(objects[0]);
wf1.makeCell(objects[1]);
objects = [];
gc();
})();
let timeout_func = function() {
assertEquals(1, cleanup0_call_count);
assertEquals(2, cleanup0_weak_cell_count);
assertEquals(1, cleanup1_call_count);
assertEquals(2, cleanup1_weak_cell_count);
}
// Give the cleanup task a chance to run. All WeakCells to cleanup will be
// available during the same invocation of the cleanup function.
setTimeout(timeout_func, 0);
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