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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_ | 5 #ifndef BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_ |
6 #define BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_ | 6 #define BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/base_api.h" | 9 #include "base/base_export.h" |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
11 | 11 |
12 #if defined(OS_MACOSX) | 12 #if defined(OS_MACOSX) |
13 #if defined(__OBJC__) | 13 #if defined(__OBJC__) |
14 @class NSAutoreleasePool; | 14 @class NSAutoreleasePool; |
15 #else // __OBJC__ | 15 #else // __OBJC__ |
16 class NSAutoreleasePool; | 16 class NSAutoreleasePool; |
17 #endif // __OBJC__ | 17 #endif // __OBJC__ |
18 #endif // OS_MACOSX | 18 #endif // OS_MACOSX |
19 | 19 |
20 namespace base { | 20 namespace base { |
21 namespace mac { | 21 namespace mac { |
22 | 22 |
23 // On the Mac, ScopedNSAutoreleasePool allocates an NSAutoreleasePool when | 23 // On the Mac, ScopedNSAutoreleasePool allocates an NSAutoreleasePool when |
24 // instantiated and sends it a -drain message when destroyed. This allows an | 24 // instantiated and sends it a -drain message when destroyed. This allows an |
25 // autorelease pool to be maintained in ordinary C++ code without bringing in | 25 // autorelease pool to be maintained in ordinary C++ code without bringing in |
26 // any direct Objective-C dependency. | 26 // any direct Objective-C dependency. |
27 // | 27 // |
28 // On other platforms, ScopedNSAutoreleasePool is an empty object with no | 28 // On other platforms, ScopedNSAutoreleasePool is an empty object with no |
29 // effects. This allows it to be used directly in cross-platform code without | 29 // effects. This allows it to be used directly in cross-platform code without |
30 // ugly #ifdefs. | 30 // ugly #ifdefs. |
31 class BASE_API ScopedNSAutoreleasePool { | 31 class BASE_EXPORT ScopedNSAutoreleasePool { |
32 public: | 32 public: |
33 #if !defined(OS_MACOSX) | 33 #if !defined(OS_MACOSX) |
34 ScopedNSAutoreleasePool() {} | 34 ScopedNSAutoreleasePool() {} |
35 void Recycle() { } | 35 void Recycle() { } |
36 #else // OS_MACOSX | 36 #else // OS_MACOSX |
37 ScopedNSAutoreleasePool(); | 37 ScopedNSAutoreleasePool(); |
38 ~ScopedNSAutoreleasePool(); | 38 ~ScopedNSAutoreleasePool(); |
39 | 39 |
40 // Clear out the pool in case its position on the stack causes it to be | 40 // Clear out the pool in case its position on the stack causes it to be |
41 // alive for long periods of time (such as the entire length of the app). | 41 // alive for long periods of time (such as the entire length of the app). |
42 // Only use then when you're certain the items currently in the pool are | 42 // Only use then when you're certain the items currently in the pool are |
43 // no longer needed. | 43 // no longer needed. |
44 void Recycle(); | 44 void Recycle(); |
45 private: | 45 private: |
46 NSAutoreleasePool* autorelease_pool_; | 46 NSAutoreleasePool* autorelease_pool_; |
47 #endif // OS_MACOSX | 47 #endif // OS_MACOSX |
48 | 48 |
49 private: | 49 private: |
50 DISALLOW_COPY_AND_ASSIGN(ScopedNSAutoreleasePool); | 50 DISALLOW_COPY_AND_ASSIGN(ScopedNSAutoreleasePool); |
51 }; | 51 }; |
52 | 52 |
53 } // namespace mac | 53 } // namespace mac |
54 } // namespace base | 54 } // namespace base |
55 | 55 |
56 #endif // BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_ | 56 #endif // BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_ |
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