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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "mojo/common/environment_data.h" | |
6 | |
7 #include "base/stl_util.h" | |
8 | |
9 namespace mojo { | |
10 namespace common { | |
11 | |
12 // static | |
13 EnvironmentData* EnvironmentData::instance_ = NULL; | |
14 | |
15 EnvironmentData::EnvironmentData() { | |
16 DCHECK(!instance_); | |
17 instance_ = this; | |
18 } | |
19 | |
20 EnvironmentData::~EnvironmentData() { | |
21 instance_ = NULL; | |
22 DataMap data_map; | |
23 data_map.swap(data_map_); | |
24 STLDeleteContainerPairSecondPointers(data_map.begin(), data_map.end()); | |
25 } | |
26 | |
27 // static | |
28 EnvironmentData* EnvironmentData::GetInstance() { | |
29 return instance_; | |
30 } | |
31 | |
32 void EnvironmentData::SetData(const void* key, scoped_ptr<Data> data) { | |
33 Data* old = NULL; | |
34 { | |
35 base::AutoLock auto_lock(data_lock_); | |
36 old = data_map_[key]; | |
37 if (data) | |
38 data_map_[key] = data.release(); | |
39 else | |
40 data_map_.erase(key); | |
41 } | |
42 delete old; | |
43 } | |
44 | |
45 EnvironmentData::Data* EnvironmentData::GetData(const void* key) { | |
46 base::AutoLock auto_lock(data_lock_); | |
47 return data_map_.count(key) > 0 ? data_map_[key] : NULL; | |
48 } | |
49 | |
50 } // namespace common | |
51 } // namespace mojo | |
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