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| 1 // Copyright (c) 2010 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 APP_WIN_SCOPED_CO_MEM_H_ | 5 #ifndef CHROME_COMMON_SCOPED_CO_MEM_H_ |
| 6 #define APP_WIN_SCOPED_CO_MEM_H_ | 6 #define CHROME_COMMON_SCOPED_CO_MEM_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include <objbase.h> | 9 #include <objbase.h> |
| 10 | 10 |
| 11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 12 | 12 |
| 13 namespace app { | 13 namespace chrome { |
| 14 namespace win { | 14 namespace common { |
| 15 | 15 |
| 16 // Simple scoped memory releaser class for COM allocated memory. | 16 // Simple scoped memory releaser class for COM allocated memory. |
| 17 // Example: | 17 // Example: |
| 18 // app::win::ScopedCoMem<ITEMIDLIST> file_item; | 18 // base::win::ScopedCoMem<ITEMIDLIST> file_item; |
| 19 // SHGetSomeInfo(&file_item, ...); | 19 // SHGetSomeInfo(&file_item, ...); |
| 20 // ... | 20 // ... |
| 21 // return; <-- memory released | 21 // return; <-- memory released |
| 22 template<typename T> | 22 template<typename T> |
| 23 class ScopedCoMem { | 23 class ScopedCoMem { |
| 24 public: | 24 public: |
| 25 explicit ScopedCoMem() : mem_ptr_(NULL) {} | 25 explicit ScopedCoMem() : mem_ptr_(NULL) {} |
| 26 | 26 |
| 27 ~ScopedCoMem() { | 27 ~ScopedCoMem() { |
| 28 if (mem_ptr_) | 28 if (mem_ptr_) |
| 29 CoTaskMemFree(mem_ptr_); | 29 CoTaskMemFree(mem_ptr_); |
| 30 } | 30 } |
| 31 | 31 |
| 32 T** operator&() { // NOLINT | 32 T** operator&() { // NOLINT |
| 33 return &mem_ptr_; | 33 return &mem_ptr_; |
| 34 } | 34 } |
| 35 | 35 |
| 36 operator T*() { | 36 operator T*() { |
| 37 return mem_ptr_; | 37 return mem_ptr_; |
| 38 } | 38 } |
| 39 | 39 |
| 40 private: | 40 private: |
| 41 T* mem_ptr_; | 41 T* mem_ptr_; |
| 42 | 42 |
| 43 DISALLOW_COPY_AND_ASSIGN(ScopedCoMem); | 43 DISALLOW_COPY_AND_ASSIGN(ScopedCoMem); |
| 44 }; | 44 }; |
| 45 | 45 |
| 46 } // namespace win | 46 } // namespace common |
| 47 } // namespace app | 47 } // namespace chrome |
| 48 | 48 |
| 49 #endif // APP_WIN_SCOPED_CO_MEM_H_ | 49 #endif // CHROME_COMMON_SCOPED_CO_MEM_H_ |
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