1/*
2 * Copyright (C) 2017 Yusuke Suzuki <[email protected]>.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "WeakMapImpl.h"
29
30namespace JSC {
31
32// Note that this function can be executed in parallel as long as the mutator stops.
33template<typename WeakMapBucket>
34void WeakMapImpl<WeakMapBucket>::finalizeUnconditionally(VM& vm)
35{
36 auto* buffer = this->buffer();
37 for (uint32_t index = 0; index < m_capacity; ++index) {
38 auto* bucket = buffer + index;
39 if (bucket->isEmpty() || bucket->isDeleted())
40 continue;
41
42 if (vm.heap.isMarked(bucket->key()))
43 continue;
44
45 bucket->makeDeleted();
46 ++m_deleteCount;
47 RELEASE_ASSERT(m_keyCount > 0);
48 --m_keyCount;
49 }
50
51 if (shouldShrink())
52 rehash(RehashMode::RemoveBatching);
53}
54
55}
56