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#pragma once
27
28#include <wtf/FileSystem.h>
29#include <wtf/MallocPtr.h>
30
31namespace JSC {
32
33class CachePayload {
34public:
35 JS_EXPORT_PRIVATE static CachePayload makeMappedPayload(FileSystem::MappedFileData&&);
36 JS_EXPORT_PRIVATE static CachePayload makeMallocPayload(MallocPtr<uint8_t>&&, size_t);
37 JS_EXPORT_PRIVATE static CachePayload makeEmptyPayload();
38
39 JS_EXPORT_PRIVATE CachePayload(CachePayload&&);
40 JS_EXPORT_PRIVATE ~CachePayload();
41 JS_EXPORT_PRIVATE CachePayload& operator=(CachePayload&& other);
42
43 const uint8_t* data() const { return m_data; }
44 size_t size() const { return m_size; }
45
46private:
47 CachePayload(bool mapped, void* data, size_t size)
48 : m_mapped(mapped)
49 , m_size(size)
50 , m_data(static_cast<uint8_t*>(data))
51 {
52 }
53
54 void freeData();
55
56 bool m_mapped;
57 size_t m_size;
58 uint8_t* m_data;
59};
60
61} // namespace JSC
62