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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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_WIN_SCOPED_HANDLE_H_ | 5 #ifndef BASE_WIN_SCOPED_HANDLE_H_ |
6 #define BASE_WIN_SCOPED_HANDLE_H_ | 6 #define BASE_WIN_SCOPED_HANDLE_H_ |
7 | 7 |
8 #include <windows.h> | 8 #include <windows.h> |
9 | 9 |
10 #include "base/base_export.h" | 10 #include "base/base_export.h" |
11 #include "base/gtest_prod_util.h" | 11 #include "base/gtest_prod_util.h" |
12 #include "base/location.h" | 12 #include "base/location.h" |
13 #include "base/logging.h" | 13 #include "base/logging.h" |
14 #include "base/macros.h" | 14 #include "base/macros.h" |
| 15 #include "base/move.h" |
15 | 16 |
16 // TODO(rvargas): remove this with the rest of the verifier. | 17 // TODO(rvargas): remove this with the rest of the verifier. |
17 #if defined(COMPILER_MSVC) | 18 #if defined(COMPILER_MSVC) |
18 #include <intrin.h> | 19 #include <intrin.h> |
19 #define BASE_WIN_GET_CALLER _ReturnAddress() | 20 #define BASE_WIN_GET_CALLER _ReturnAddress() |
20 #elif defined(COMPILER_GCC) | 21 #elif defined(COMPILER_GCC) |
21 #define BASE_WIN_GET_CALLER __builtin_extract_return_addr(\\ | 22 #define BASE_WIN_GET_CALLER __builtin_extract_return_addr(\\ |
22 __builtin_return_address(0)) | 23 __builtin_return_address(0)) |
23 #endif | 24 #endif |
24 | 25 |
25 namespace base { | 26 namespace base { |
26 namespace win { | 27 namespace win { |
27 | 28 |
28 // Generic wrapper for raw handles that takes care of closing handles | 29 // Generic wrapper for raw handles that takes care of closing handles |
29 // automatically. The class interface follows the style of | 30 // automatically. The class interface follows the style of |
30 // the ScopedFILE class with two additions: | 31 // the ScopedFILE class with two additions: |
31 // - IsValid() method can tolerate multiple invalid handle values such as NULL | 32 // - IsValid() method can tolerate multiple invalid handle values such as NULL |
32 // and INVALID_HANDLE_VALUE (-1) for Win32 handles. | 33 // and INVALID_HANDLE_VALUE (-1) for Win32 handles. |
33 // - Set() (and the constructors and assignment operators that call it) | 34 // - Set() (and the constructors and assignment operators that call it) |
34 // preserve the Windows LastError code. This ensures that GetLastError() can | 35 // preserve the Windows LastError code. This ensures that GetLastError() can |
35 // be called after stashing a handle in a GenericScopedHandle object. Doing | 36 // be called after stashing a handle in a GenericScopedHandle object. Doing |
36 // this explicitly is necessary because of bug 528394 and VC++ 2015. | 37 // this explicitly is necessary because of bug 528394 and VC++ 2015. |
37 template <class Traits, class Verifier> | 38 template <class Traits, class Verifier> |
38 class GenericScopedHandle { | 39 class GenericScopedHandle { |
| 40 MOVE_ONLY_TYPE_FOR_CPP_03(GenericScopedHandle) |
| 41 |
39 public: | 42 public: |
40 typedef typename Traits::Handle Handle; | 43 typedef typename Traits::Handle Handle; |
41 | 44 |
42 GenericScopedHandle() : handle_(Traits::NullHandle()) {} | 45 GenericScopedHandle() : handle_(Traits::NullHandle()) {} |
43 | 46 |
44 explicit GenericScopedHandle(Handle handle) : handle_(Traits::NullHandle()) { | 47 explicit GenericScopedHandle(Handle handle) : handle_(Traits::NullHandle()) { |
45 Set(handle); | 48 Set(handle); |
46 } | 49 } |
47 | 50 |
48 GenericScopedHandle(GenericScopedHandle&& other) | 51 GenericScopedHandle(GenericScopedHandle&& other) |
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102 | 105 |
103 Traits::CloseHandle(handle_); | 106 Traits::CloseHandle(handle_); |
104 handle_ = Traits::NullHandle(); | 107 handle_ = Traits::NullHandle(); |
105 } | 108 } |
106 } | 109 } |
107 | 110 |
108 private: | 111 private: |
109 FRIEND_TEST_ALL_PREFIXES(ScopedHandleTest, ActiveVerifierWrongOwner); | 112 FRIEND_TEST_ALL_PREFIXES(ScopedHandleTest, ActiveVerifierWrongOwner); |
110 FRIEND_TEST_ALL_PREFIXES(ScopedHandleTest, ActiveVerifierUntrackedHandle); | 113 FRIEND_TEST_ALL_PREFIXES(ScopedHandleTest, ActiveVerifierUntrackedHandle); |
111 Handle handle_; | 114 Handle handle_; |
112 | |
113 DISALLOW_COPY_AND_ASSIGN(GenericScopedHandle); | |
114 }; | 115 }; |
115 | 116 |
116 #undef BASE_WIN_GET_CALLER | 117 #undef BASE_WIN_GET_CALLER |
117 | 118 |
118 // The traits class for Win32 handles that can be closed via CloseHandle() API. | 119 // The traits class for Win32 handles that can be closed via CloseHandle() API. |
119 class HandleTraits { | 120 class HandleTraits { |
120 public: | 121 public: |
121 typedef HANDLE Handle; | 122 typedef HANDLE Handle; |
122 | 123 |
123 // Closes the handle. | 124 // Closes the handle. |
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179 BASE_EXPORT void OnHandleBeingClosed(HANDLE handle); | 180 BASE_EXPORT void OnHandleBeingClosed(HANDLE handle); |
180 | 181 |
181 // This testing function returns the module that the ActiveVerifier concrete | 182 // This testing function returns the module that the ActiveVerifier concrete |
182 // implementation was instantiated in. | 183 // implementation was instantiated in. |
183 BASE_EXPORT HMODULE GetHandleVerifierModuleForTesting(); | 184 BASE_EXPORT HMODULE GetHandleVerifierModuleForTesting(); |
184 | 185 |
185 } // namespace win | 186 } // namespace win |
186 } // namespace base | 187 } // namespace base |
187 | 188 |
188 #endif // BASE_WIN_SCOPED_HANDLE_H_ | 189 #endif // BASE_WIN_SCOPED_HANDLE_H_ |
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