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
35#if !OS(WINDOWS)
36CachePayload CachePayload::makeMappedPayload(void* data, size_t size)
37{
38 return CachePayload(true, data, size);
39}
40#endif
41
42CachePayload CachePayload::makeMallocPayload(MallocPtr<uint8_t>&& data, size_t size)
43{
44 return CachePayload(false, data.leakPtr(), size);
45}
46
47CachePayload CachePayload::makeEmptyPayload()
48{
49 return CachePayload(true, nullptr, 0);
50}
51
52CachePayload::CachePayload(CachePayload&& other)
53{
54 m_mapped = other.m_mapped;
55 m_size = other.m_size;
56 m_data = other.m_data;
57 other.m_mapped = false;
58 other.m_data = nullptr;
59 other.m_size = 0;
60}
61
62CachePayload::~CachePayload()
63{
64 freeData();
65}
66
67CachePayload& CachePayload::operator=(CachePayload&& other)
68{
69 ASSERT(&other != this);
70 freeData();
71 return *new (this) CachePayload(WTFMove(other));
72}
73
74void CachePayload::freeData()
75{
76 if (!m_data)
77 return;
78 if (m_mapped) {
79#if !OS(WINDOWS)
80 munmap(m_data, m_size);
81#else
82 RELEASE_ASSERT_NOT_REACHED();
83#endif
84 } else
85 fastFree(m_data);
86}
87
88} // namespace JSC
89