1/*
2 * Copyright (C) 2019 Apple Inc. All rights reserved.
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#include "config.h"
27#include "CachePayload.h"
28
29#if !OS(WINDOWS)
30#include <sys/mman.h>
31#endif
32
33namespace JSC {
34
35CachePayload CachePayload::makeMappedPayload(FileSystem::MappedFileData&& data)
36{
37 return CachePayload(true, data.leakHandle(), data.size());
38}
39
40CachePayload CachePayload::makeMallocPayload(MallocPtr<uint8_t>&& data, size_t size)
41{
42 return CachePayload(false, data.leakPtr(), size);
43}
44
45CachePayload CachePayload::makeEmptyPayload()
46{
47 return CachePayload(true, nullptr, 0);
48}
49
50CachePayload::CachePayload(CachePayload&& other)
51{
52 m_mapped = other.m_mapped;
53 m_size = other.m_size;
54 m_data = other.m_data;
55 other.m_mapped = false;
56 other.m_data = nullptr;
57 other.m_size = 0;
58}
59
60CachePayload::~CachePayload()
61{
62 freeData();
63}
64
65CachePayload& CachePayload::operator=(CachePayload&& other)
66{
67 ASSERT(&other != this);
68 freeData();
69 return *new (this) CachePayload(WTFMove(other));
70}
71
72void CachePayload::freeData()
73{
74 if (!m_data)
75 return;
76 if (m_mapped) {
77 FileSystem::unmapViewOfFile(m_data, m_size);
78 } else
79 fastFree(m_data);
80}
81
82} // namespace JSC
83