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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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_MEMORY_SHARED_MEMORY_HANDLE_H_ | 5 #ifndef BASE_MEMORY_SHARED_MEMORY_HANDLE_H_ |
6 #define BASE_MEMORY_SHARED_MEMORY_HANDLE_H_ | 6 #define BASE_MEMORY_SHARED_MEMORY_HANDLE_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include "build/build_config.h" | 10 #include "build/build_config.h" |
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114 base::ProcessId pid); | 114 base::ProcessId pid); |
115 | 115 |
116 // Standard copy constructor. The new instance shares the underlying OS | 116 // Standard copy constructor. The new instance shares the underlying OS |
117 // primitives. | 117 // primitives. |
118 SharedMemoryHandle(const SharedMemoryHandle& handle); | 118 SharedMemoryHandle(const SharedMemoryHandle& handle); |
119 | 119 |
120 // Standard assignment operator. The updated instance shares the underlying | 120 // Standard assignment operator. The updated instance shares the underlying |
121 // OS primitives. | 121 // OS primitives. |
122 SharedMemoryHandle& operator=(const SharedMemoryHandle& handle); | 122 SharedMemoryHandle& operator=(const SharedMemoryHandle& handle); |
123 | 123 |
124 // Duplicates the underlying OS resources. Assumes the SharedMemoryHandle is | 124 // Duplicates the underlying OS resources. |
125 // of type MACH. | |
126 SharedMemoryHandle Duplicate() const; | 125 SharedMemoryHandle Duplicate() const; |
127 | 126 |
128 // Comparison operators. | 127 // Comparison operators. |
129 bool operator==(const SharedMemoryHandle& handle) const; | 128 bool operator==(const SharedMemoryHandle& handle) const; |
130 bool operator!=(const SharedMemoryHandle& handle) const; | 129 bool operator!=(const SharedMemoryHandle& handle) const; |
131 | 130 |
132 // Whether the underlying OS primitive is valid. Once the SharedMemoryHandle | 131 // Whether the underlying OS primitive is valid. Once the SharedMemoryHandle |
133 // is backed by a valid OS primitive, it becomes immutable. | 132 // is backed by a valid OS primitive, it becomes immutable. |
134 bool IsValid() const; | 133 bool IsValid() const; |
135 | 134 |
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183 // Defaults to |false|. | 182 // Defaults to |false|. |
184 bool ownership_passes_to_ipc_; | 183 bool ownership_passes_to_ipc_; |
185 }; | 184 }; |
186 }; | 185 }; |
187 }; | 186 }; |
188 #endif | 187 #endif |
189 | 188 |
190 } // namespace base | 189 } // namespace base |
191 | 190 |
192 #endif // BASE_MEMORY_SHARED_MEMORY_HANDLE_H_ | 191 #endif // BASE_MEMORY_SHARED_MEMORY_HANDLE_H_ |
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