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/MallocPtr.h>
29
30namespace JSC {
31
32class CachePayload {
33public:
34#if !OS(WINDOWS)
35 JS_EXPORT_PRIVATE static CachePayload makeMappedPayload(void*, size_t);
36#endif
37 JS_EXPORT_PRIVATE static CachePayload makeMallocPayload(MallocPtr<uint8_t>&&, size_t);
38 JS_EXPORT_PRIVATE static CachePayload makeEmptyPayload();
39
40 JS_EXPORT_PRIVATE CachePayload(CachePayload&&);
41 JS_EXPORT_PRIVATE ~CachePayload();
42 JS_EXPORT_PRIVATE CachePayload& operator=(CachePayload&& other);
43
44 const uint8_t* data() const { return m_data; }
45 size_t size() const { return m_size; }
46
47private:
48 CachePayload(bool mapped, void* data, size_t size)
49 : m_mapped(mapped)
50 , m_size(size)
51 , m_data(static_cast<uint8_t*>(data))
52 {
53 }
54
55 void freeData();
56
57 bool m_mapped;
58 size_t m_size;
59 uint8_t* m_data;
60};
61
62} // namespace JSC
63