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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 #include "base/supports_user_data.h" | 5 #include "base/supports_user_data.h" |
6 | 6 |
| 7 #include "base/memory/ptr_util.h" |
| 8 |
7 namespace base { | 9 namespace base { |
8 | 10 |
9 SupportsUserData::SupportsUserData() { | 11 SupportsUserData::SupportsUserData() { |
10 // Harmless to construct on a different thread to subsequent usage. | 12 // Harmless to construct on a different thread to subsequent usage. |
11 thread_checker_.DetachFromThread(); | 13 thread_checker_.DetachFromThread(); |
12 } | 14 } |
13 | 15 |
14 SupportsUserData::Data* SupportsUserData::GetUserData(const void* key) const { | 16 SupportsUserData::Data* SupportsUserData::GetUserData(const void* key) const { |
15 DCHECK(thread_checker_.CalledOnValidThread()); | 17 DCHECK(thread_checker_.CalledOnValidThread()); |
16 DataMap::const_iterator found = user_data_.find(key); | 18 DataMap::const_iterator found = user_data_.find(key); |
17 if (found != user_data_.end()) | 19 if (found != user_data_.end()) |
18 return found->second.get(); | 20 return found->second.get(); |
19 return NULL; | 21 return NULL; |
20 } | 22 } |
21 | 23 |
22 void SupportsUserData::SetUserData(const void* key, Data* data) { | 24 void SupportsUserData::SetUserData(const void* key, Data* data) { |
23 DCHECK(thread_checker_.CalledOnValidThread()); | 25 DCHECK(thread_checker_.CalledOnValidThread()); |
24 user_data_[key] = make_scoped_ptr(data); | 26 user_data_[key] = WrapUnique(data); |
25 } | 27 } |
26 | 28 |
27 void SupportsUserData::RemoveUserData(const void* key) { | 29 void SupportsUserData::RemoveUserData(const void* key) { |
28 DCHECK(thread_checker_.CalledOnValidThread()); | 30 DCHECK(thread_checker_.CalledOnValidThread()); |
29 user_data_.erase(key); | 31 user_data_.erase(key); |
30 } | 32 } |
31 | 33 |
32 void SupportsUserData::DetachUserDataThread() { | 34 void SupportsUserData::DetachUserDataThread() { |
33 thread_checker_.DetachFromThread(); | 35 thread_checker_.DetachFromThread(); |
34 } | 36 } |
35 | 37 |
36 SupportsUserData::~SupportsUserData() { | 38 SupportsUserData::~SupportsUserData() { |
37 DCHECK(thread_checker_.CalledOnValidThread() || user_data_.empty()); | 39 DCHECK(thread_checker_.CalledOnValidThread() || user_data_.empty()); |
38 DataMap local_user_data; | 40 DataMap local_user_data; |
39 user_data_.swap(local_user_data); | 41 user_data_.swap(local_user_data); |
40 // Now this->user_data_ is empty, and any destructors called transitively from | 42 // Now this->user_data_ is empty, and any destructors called transitively from |
41 // the destruction of |local_user_data| will see it that way instead of | 43 // the destruction of |local_user_data| will see it that way instead of |
42 // examining a being-destroyed object. | 44 // examining a being-destroyed object. |
43 } | 45 } |
44 | 46 |
45 } // namespace base | 47 } // namespace base |
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