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Issue 442383002: Move storage-related files from webkit/ to new top-level directory storage/ (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: . Created 6 years, 4 months ago
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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 "webkit/common/blob/shareable_file_reference.h" 5 #include "storage/common/blob/shareable_file_reference.h"
6 6
7 #include <map> 7 #include <map>
8 8
9 #include "base/lazy_instance.h" 9 #include "base/lazy_instance.h"
10 #include "base/message_loop/message_loop_proxy.h" 10 #include "base/message_loop/message_loop_proxy.h"
11 #include "base/task_runner.h" 11 #include "base/task_runner.h"
12 #include "base/threading/non_thread_safe.h" 12 #include "base/threading/non_thread_safe.h"
13 13
14 namespace webkit_blob { 14 namespace storage {
15 15
16 namespace { 16 namespace {
17 17
18 // A shareable file map with enforcement of thread checker. 18 // A shareable file map with enforcement of thread checker.
19 class ShareableFileMap : public base::NonThreadSafe { 19 class ShareableFileMap : public base::NonThreadSafe {
20 public: 20 public:
21 typedef std::map<base::FilePath, ShareableFileReference*> FileMap; 21 typedef std::map<base::FilePath, ShareableFileReference*> FileMap;
22 typedef FileMap::iterator iterator; 22 typedef FileMap::iterator iterator;
23 typedef FileMap::key_type key_type; 23 typedef FileMap::key_type key_type;
24 typedef FileMap::value_type value_type; 24 typedef FileMap::value_type value_type;
25 25
26 ShareableFileMap() {} 26 ShareableFileMap() {}
27 27
28 ~ShareableFileMap() { 28 ~ShareableFileMap() { DetachFromThread(); }
29 DetachFromThread();
30 }
31 29
32 iterator Find(key_type key) { 30 iterator Find(key_type key) {
33 DCHECK(CalledOnValidThread()); 31 DCHECK(CalledOnValidThread());
34 return file_map_.find(key); 32 return file_map_.find(key);
35 } 33 }
36 34
37 iterator End() { 35 iterator End() {
38 DCHECK(CalledOnValidThread()); 36 DCHECK(CalledOnValidThread());
39 return file_map_.end(); 37 return file_map_.end();
40 } 38 }
(...skipping 24 matching lines...) Expand all
65 ShareableFileReference* reference = 63 ShareableFileReference* reference =
66 (found == g_file_map.Get().End()) ? NULL : found->second; 64 (found == g_file_map.Get().End()) ? NULL : found->second;
67 return scoped_refptr<ShareableFileReference>(reference); 65 return scoped_refptr<ShareableFileReference>(reference);
68 } 66 }
69 67
70 // static 68 // static
71 scoped_refptr<ShareableFileReference> ShareableFileReference::GetOrCreate( 69 scoped_refptr<ShareableFileReference> ShareableFileReference::GetOrCreate(
72 const base::FilePath& path, 70 const base::FilePath& path,
73 FinalReleasePolicy policy, 71 FinalReleasePolicy policy,
74 base::TaskRunner* file_task_runner) { 72 base::TaskRunner* file_task_runner) {
75 return GetOrCreate( 73 return GetOrCreate(ScopedFile(
76 ScopedFile(path, static_cast<ScopedFile::ScopeOutPolicy>(policy), 74 path, static_cast<ScopedFile::ScopeOutPolicy>(policy), file_task_runner));
77 file_task_runner));
78 } 75 }
79 76
80 // static 77 // static
81 scoped_refptr<ShareableFileReference> ShareableFileReference::GetOrCreate( 78 scoped_refptr<ShareableFileReference> ShareableFileReference::GetOrCreate(
82 ScopedFile scoped_file) { 79 ScopedFile scoped_file) {
83 if (scoped_file.path().empty()) 80 if (scoped_file.path().empty())
84 return scoped_refptr<ShareableFileReference>(); 81 return scoped_refptr<ShareableFileReference>();
85 82
86 typedef std::pair<ShareableFileMap::iterator, bool> InsertResult; 83 typedef std::pair<ShareableFileMap::iterator, bool> InsertResult;
87 // Required for VS2010: http://connect.microsoft.com/VisualStudio/feedback/det ails/520043/error-converting-from-null-to-a-pointer-type-in-std-pair 84 // Required for VS2010:
88 webkit_blob::ShareableFileReference* null_reference = NULL; 85 // http://connect.microsoft.com/VisualStudio/feedback/details/520043/error-con verting-from-null-to-a-pointer-type-in-std-pair
86 storage::ShareableFileReference* null_reference = NULL;
89 InsertResult result = g_file_map.Get().Insert( 87 InsertResult result = g_file_map.Get().Insert(
90 ShareableFileMap::value_type(scoped_file.path(), null_reference)); 88 ShareableFileMap::value_type(scoped_file.path(), null_reference));
91 if (result.second == false) { 89 if (result.second == false) {
92 scoped_file.Release(); 90 scoped_file.Release();
93 return scoped_refptr<ShareableFileReference>(result.first->second); 91 return scoped_refptr<ShareableFileReference>(result.first->second);
94 } 92 }
95 93
96 // Wasn't in the map, create a new reference and store the pointer. 94 // Wasn't in the map, create a new reference and store the pointer.
97 scoped_refptr<ShareableFileReference> reference( 95 scoped_refptr<ShareableFileReference> reference(
98 new ShareableFileReference(scoped_file.Pass())); 96 new ShareableFileReference(scoped_file.Pass()));
(...skipping 10 matching lines...) Expand all
109 ShareableFileReference::ShareableFileReference(ScopedFile scoped_file) 107 ShareableFileReference::ShareableFileReference(ScopedFile scoped_file)
110 : scoped_file_(scoped_file.Pass()) { 108 : scoped_file_(scoped_file.Pass()) {
111 DCHECK(g_file_map.Get().Find(path())->second == NULL); 109 DCHECK(g_file_map.Get().Find(path())->second == NULL);
112 } 110 }
113 111
114 ShareableFileReference::~ShareableFileReference() { 112 ShareableFileReference::~ShareableFileReference() {
115 DCHECK(g_file_map.Get().Find(path())->second == this); 113 DCHECK(g_file_map.Get().Find(path())->second == this);
116 g_file_map.Get().Erase(path()); 114 g_file_map.Get().Erase(path());
117 } 115 }
118 116
119 } // namespace webkit_blob 117 } // namespace storage
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