1/*
2 * Copyright (C) 2007-2018 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 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#pragma once
30
31#ifdef __OBJC__
32#error Please use @autoreleasepool instead of AutodrainedPool.
33#endif
34
35#include <wtf/Noncopyable.h>
36
37namespace WTF {
38
39// This class allows non-Objective-C C++ code to create an autorelease pool.
40// It cannot be used in Objective-C++ code, won't be compiled; instead @autoreleasepool should be used.
41// It can be used in cross-platform code; will compile down to nothing for non-Cocoa platforms.
42
43class AutodrainedPool {
44 WTF_MAKE_NONCOPYABLE(AutodrainedPool);
45
46public:
47#if USE(FOUNDATION)
48 WTF_EXPORT_PRIVATE AutodrainedPool();
49 WTF_EXPORT_PRIVATE ~AutodrainedPool();
50#else
51 AutodrainedPool() { }
52 ~AutodrainedPool() { }
53#endif
54
55private:
56#if USE(FOUNDATION)
57 void* m_autoreleasePool;
58#endif
59};
60
61} // namespace WTF
62
63using WTF::AutodrainedPool;
64