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