henrike@webrtc.org | f7795df | 2014-05-13 18:00:26 +0000 | [diff] [blame^] | 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/common.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 NULL; } |
| 49 | void operator delete (void* ptr) {} |
| 50 | |
| 51 | NSAutoreleasePool* pool_; |
| 52 | |
| 53 | DISALLOW_EVIL_CONSTRUCTORS(ScopedAutoreleasePool); |
| 54 | }; |
| 55 | |
| 56 | } // namespace rtc |
| 57 | |
| 58 | #endif // WEBRTC_MAC |
| 59 | #endif // WEBRTC_BASE_SCOPED_AUTORELEASE_POOL_H__ |