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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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_SCOPED_CFTYPEREF_H_ | 5 #ifndef BASE_MAC_SCOPED_CFTYPEREF_H_ |
| 6 #define BASE_SCOPED_CFTYPEREF_H_ | 6 #define BASE_MAC_SCOPED_CFTYPEREF_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include <CoreFoundation/CoreFoundation.h> | 9 #include <CoreFoundation/CoreFoundation.h> |
| 10 |
| 10 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 11 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
| 12 | 13 |
| 13 // scoped_cftyperef<> is patterned after scoped_ptr<>, but maintains ownership | 14 namespace base { |
| 15 namespace mac { |
| 16 |
| 17 // ScopedCFTypeRef<> is patterned after scoped_ptr<>, but maintains ownership |
| 14 // of a CoreFoundation object: any object that can be represented as a | 18 // of a CoreFoundation object: any object that can be represented as a |
| 15 // CFTypeRef. Style deviations here are solely for compatibility with | 19 // CFTypeRef. Style deviations here are solely for compatibility with |
| 16 // scoped_ptr<>'s interface, with which everyone is already familiar. | 20 // scoped_ptr<>'s interface, with which everyone is already familiar. |
| 17 // | 21 // |
| 18 // When scoped_cftyperef<> takes ownership of an object (in the constructor or | 22 // When ScopedCFTypeRef<> takes ownership of an object (in the constructor or |
| 19 // in reset()), it takes over the caller's existing ownership claim. The | 23 // in reset()), it takes over the caller's existing ownership claim. The |
| 20 // caller must own the object it gives to scoped_cftyperef<>, and relinquishes | 24 // caller must own the object it gives to ScopedCFTypeRef<>, and relinquishes |
| 21 // an ownership claim to that object. scoped_cftyperef<> does not call | 25 // an ownership claim to that object. ScopedCFTypeRef<> does not call |
| 22 // CFRetain(). | 26 // CFRetain(). |
| 23 template<typename CFT> | 27 template<typename CFT> |
| 24 class scoped_cftyperef { | 28 class ScopedCFTypeRef { |
| 25 public: | 29 public: |
| 26 typedef CFT element_type; | 30 typedef CFT element_type; |
| 27 | 31 |
| 28 explicit scoped_cftyperef(CFT object = NULL) | 32 explicit ScopedCFTypeRef(CFT object = NULL) |
| 29 : object_(object) { | 33 : object_(object) { |
| 30 } | 34 } |
| 31 | 35 |
| 32 ~scoped_cftyperef() { | 36 ~ScopedCFTypeRef() { |
| 33 if (object_) | 37 if (object_) |
| 34 CFRelease(object_); | 38 CFRelease(object_); |
| 35 } | 39 } |
| 36 | 40 |
| 37 void reset(CFT object = NULL) { | 41 void reset(CFT object = NULL) { |
| 38 if (object_) | 42 if (object_) |
| 39 CFRelease(object_); | 43 CFRelease(object_); |
| 40 object_ = object; | 44 object_ = object; |
| 41 } | 45 } |
| 42 | 46 |
| (...skipping 24 matching lines...) Expand all Loading... |
| 67 // CFRelease(), use scoped_cftyperef<>::reset(). | 71 // CFRelease(), use scoped_cftyperef<>::reset(). |
| 68 CFT release() WARN_UNUSED_RESULT { | 72 CFT release() WARN_UNUSED_RESULT { |
| 69 CFT temp = object_; | 73 CFT temp = object_; |
| 70 object_ = NULL; | 74 object_ = NULL; |
| 71 return temp; | 75 return temp; |
| 72 } | 76 } |
| 73 | 77 |
| 74 private: | 78 private: |
| 75 CFT object_; | 79 CFT object_; |
| 76 | 80 |
| 77 DISALLOW_COPY_AND_ASSIGN(scoped_cftyperef); | 81 DISALLOW_COPY_AND_ASSIGN(ScopedCFTypeRef); |
| 78 }; | 82 }; |
| 79 | 83 |
| 80 #endif // BASE_SCOPED_CFTYPEREF_H_ | 84 } // namespace mac |
| 85 } // namespace base |
| 86 |
| 87 #endif // BASE_MAC_SCOPED_CFTYPEREF_H_ |
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