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1 /* | |
2 * Copyright 2008 The WebRTC Project Authors. All rights reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 // Automatically initialize and and free an autoreleasepool. Never allocate | |
12 // an instance of this class using "new" - that will result in a compile-time | |
13 // error. Only use it as a stack object. | |
14 // | |
15 // Note: NSAutoreleasePool docs say that you should not normally need to | |
16 // declare an NSAutoreleasePool as a member of an object - but there's nothing | |
17 // that indicates it will be a problem, as long as the stack lifetime of the | |
18 // pool exactly matches the stack lifetime of the object. | |
19 | |
20 #ifndef WEBRTC_BASE_SCOPED_AUTORELEASE_POOL_H__ | |
21 #define WEBRTC_BASE_SCOPED_AUTORELEASE_POOL_H__ | |
22 | |
23 #if defined(WEBRTC_MAC) | |
24 | |
25 #include "webrtc/base/constructormagic.h" | |
26 | |
27 // This header may be included from Obj-C files or C++ files. | |
28 #ifdef __OBJC__ | |
29 @class NSAutoreleasePool; | |
30 #else | |
31 class NSAutoreleasePool; | |
32 #endif | |
33 | |
34 namespace rtc { | |
35 | |
36 class ScopedAutoreleasePool { | |
37 public: | |
38 ScopedAutoreleasePool(); | |
39 ~ScopedAutoreleasePool(); | |
40 | |
41 private: | |
42 // Declaring private overrides of new and delete here enforces the "only use | |
43 // as a stack object" discipline. | |
44 // | |
45 // Note: new is declared as "throw()" to get around a gcc warning about new | |
46 // returning null, but this method will never get called and therefore will | |
47 // never actually throw any exception. | |
48 void* operator new(size_t size) throw() { return nullptr; } | |
49 void operator delete (void* ptr) {} | |
50 | |
51 NSAutoreleasePool* pool_; | |
52 | |
53 RTC_DISALLOW_COPY_AND_ASSIGN(ScopedAutoreleasePool); | |
54 }; | |
55 | |
56 } // namespace rtc | |
57 | |
58 #endif // WEBRTC_MAC | |
59 #endif // WEBRTC_BASE_SCOPED_AUTORELEASE_POOL_H__ | |
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