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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 #include "base/memory/shared_memory_handle.h" | 5 #include "base/memory/shared_memory_handle.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/unguessable_token.h" | 8 #include "base/unguessable_token.h" |
9 | 9 |
10 namespace base { | 10 namespace base { |
11 | 11 |
12 SharedMemoryHandle::SharedMemoryHandle() | 12 SharedMemoryHandle::SharedMemoryHandle() |
13 : handle_(nullptr), ownership_passes_to_ipc_(false) {} | 13 : handle_(nullptr), ownership_passes_to_ipc_(false) {} |
14 | 14 |
15 SharedMemoryHandle::SharedMemoryHandle(HANDLE h, | 15 SharedMemoryHandle::SharedMemoryHandle(HANDLE h, |
| 16 size_t size, |
16 const base::UnguessableToken& guid) | 17 const base::UnguessableToken& guid) |
17 : handle_(h), ownership_passes_to_ipc_(false), guid_(guid) {} | 18 : handle_(h), ownership_passes_to_ipc_(false), guid_(guid), size_(size) {} |
18 | 19 |
19 void SharedMemoryHandle::Close() const { | 20 void SharedMemoryHandle::Close() const { |
20 DCHECK(handle_ != nullptr); | 21 DCHECK(handle_ != nullptr); |
21 ::CloseHandle(handle_); | 22 ::CloseHandle(handle_); |
22 } | 23 } |
23 | 24 |
24 bool SharedMemoryHandle::IsValid() const { | 25 bool SharedMemoryHandle::IsValid() const { |
25 return handle_ != nullptr; | 26 return handle_ != nullptr; |
26 } | 27 } |
27 | 28 |
28 SharedMemoryHandle SharedMemoryHandle::Duplicate() const { | 29 SharedMemoryHandle SharedMemoryHandle::Duplicate() const { |
29 HANDLE duped_handle; | 30 HANDLE duped_handle; |
30 ProcessHandle process = GetCurrentProcess(); | 31 ProcessHandle process = GetCurrentProcess(); |
31 BOOL success = ::DuplicateHandle(process, handle_, process, &duped_handle, 0, | 32 BOOL success = ::DuplicateHandle(process, handle_, process, &duped_handle, 0, |
32 FALSE, DUPLICATE_SAME_ACCESS); | 33 FALSE, DUPLICATE_SAME_ACCESS); |
33 if (!success) | 34 if (!success) |
34 return SharedMemoryHandle(); | 35 return SharedMemoryHandle(); |
35 | 36 |
36 base::SharedMemoryHandle handle(duped_handle, GetGUID()); | 37 base::SharedMemoryHandle handle(duped_handle, GetSize(), GetGUID()); |
37 handle.SetOwnershipPassesToIPC(true); | 38 handle.SetOwnershipPassesToIPC(true); |
38 return handle; | 39 return handle; |
39 } | 40 } |
40 | 41 |
41 HANDLE SharedMemoryHandle::GetHandle() const { | 42 HANDLE SharedMemoryHandle::GetHandle() const { |
42 return handle_; | 43 return handle_; |
43 } | 44 } |
44 | 45 |
45 void SharedMemoryHandle::SetOwnershipPassesToIPC(bool ownership_passes) { | 46 void SharedMemoryHandle::SetOwnershipPassesToIPC(bool ownership_passes) { |
46 ownership_passes_to_ipc_ = ownership_passes; | 47 ownership_passes_to_ipc_ = ownership_passes; |
47 } | 48 } |
48 | 49 |
49 bool SharedMemoryHandle::OwnershipPassesToIPC() const { | 50 bool SharedMemoryHandle::OwnershipPassesToIPC() const { |
50 return ownership_passes_to_ipc_; | 51 return ownership_passes_to_ipc_; |
51 } | 52 } |
52 | 53 |
53 } // namespace base | 54 } // namespace base |
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