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Side by Side Diff: webkit/fileapi/isolated_context.h

Issue 11103031: webkit: Merge blob and fileapi into one build target 'storage' (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Leave *.gypi files in blob and fileapi Created 8 years, 2 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 #ifndef WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ 5 #ifndef WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_
6 #define WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ 6 #define WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_
7 7
8 #include <map> 8 #include <map>
9 #include <set> 9 #include <set>
10 #include <string> 10 #include <string>
11 #include <vector> 11 #include <vector>
12 12
13 #include "base/basictypes.h" 13 #include "base/basictypes.h"
14 #include "base/file_path.h" 14 #include "base/file_path.h"
15 #include "base/lazy_instance.h"
15 #include "base/memory/singleton.h" 16 #include "base/memory/singleton.h"
16 #include "base/synchronization/lock.h" 17 #include "base/synchronization/lock.h"
17 #include "base/lazy_instance.h"
18 #include "webkit/fileapi/file_system_types.h" 18 #include "webkit/fileapi/file_system_types.h"
19 #include "webkit/fileapi/fileapi_export.h" 19 #include "webkit/storage/webkit_storage_export.h"
20 20
21 namespace fileapi { 21 namespace fileapi {
22 22
23 // Manages isolated filesystem namespaces. 23 // Manages isolated filesystem namespaces.
24 // This context class is a singleton and access to the context is 24 // This context class is a singleton and access to the context is
25 // thread-safe (protected with a lock). 25 // thread-safe (protected with a lock).
26 // 26 //
27 // There are two types of filesystems managed by this context: 27 // There are two types of filesystems managed by this context:
28 // isolated and external. 28 // isolated and external.
29 // The former is transient while the latter is persistent. 29 // The former is transient while the latter is persistent.
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45 // 45 //
46 // A filesystem instance is represented by IsolatedContext::Instance, and 46 // A filesystem instance is represented by IsolatedContext::Instance, and
47 // managed as a map instance_map_ which maps from filesystem ID (or name) 47 // managed as a map instance_map_ which maps from filesystem ID (or name)
48 // to the instance. 48 // to the instance.
49 // 49 //
50 // Some methods of this class are virtual just for mocking. 50 // Some methods of this class are virtual just for mocking.
51 // 51 //
52 // TODO(kinuko): This should have a better name since this handles both 52 // TODO(kinuko): This should have a better name since this handles both
53 // isolated and external file systems. 53 // isolated and external file systems.
54 // 54 //
55 class FILEAPI_EXPORT IsolatedContext { 55 class WEBKIT_STORAGE_EXPORT IsolatedContext {
56 public: 56 public:
57 struct FILEAPI_EXPORT FileInfo { 57 struct WEBKIT_STORAGE_EXPORT FileInfo {
58 FileInfo(); 58 FileInfo();
59 FileInfo(const std::string& name, const FilePath& path); 59 FileInfo(const std::string& name, const FilePath& path);
60 60
61 // The name to be used to register the file. The registered file can 61 // The name to be used to register the file. The registered file can
62 // be referred by a virtual path /<filesystem_id>/<name>. 62 // be referred by a virtual path /<filesystem_id>/<name>.
63 // The name should NOT contain a path separator '/'. 63 // The name should NOT contain a path separator '/'.
64 std::string name; 64 std::string name;
65 65
66 // The path of the file. 66 // The path of the file.
67 FilePath path; 67 FilePath path;
68 68
69 // For STL operation. 69 // For STL operation.
70 bool operator<(const FileInfo& that) const { return name < that.name; } 70 bool operator<(const FileInfo& that) const { return name < that.name; }
71 }; 71 };
72 72
73 class FILEAPI_EXPORT FileInfoSet { 73 class WEBKIT_STORAGE_EXPORT FileInfoSet {
74 public: 74 public:
75 FileInfoSet(); 75 FileInfoSet();
76 ~FileInfoSet(); 76 ~FileInfoSet();
77 77
78 // Add the given |path| to the set and populates |registered_name| with 78 // Add the given |path| to the set and populates |registered_name| with
79 // the registered name assigned for the path. |path| needs to be 79 // the registered name assigned for the path. |path| needs to be
80 // absolute and should not contain parent references. 80 // absolute and should not contain parent references.
81 // Return false if the |path| is not valid and could not be added. 81 // Return false if the |path| is not valid and could not be added.
82 bool AddPath(const FilePath& path, std::string* registered_name); 82 bool AddPath(const FilePath& path, std::string* registered_name);
83 83
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237 // This lock needs to be obtained when accessing the instance_map_. 237 // This lock needs to be obtained when accessing the instance_map_.
238 mutable base::Lock lock_; 238 mutable base::Lock lock_;
239 239
240 IDToInstance instance_map_; 240 IDToInstance instance_map_;
241 PathToID path_to_id_map_; 241 PathToID path_to_id_map_;
242 242
243 DISALLOW_COPY_AND_ASSIGN(IsolatedContext); 243 DISALLOW_COPY_AND_ASSIGN(IsolatedContext);
244 }; 244 };
245 245
246 // Registers a scoped external filesystem which gets revoked when it scopes out. 246 // Registers a scoped external filesystem which gets revoked when it scopes out.
247 class FILEAPI_EXPORT ScopedExternalFileSystem { 247 class WEBKIT_STORAGE_EXPORT ScopedExternalFileSystem {
248 public: 248 public:
249 ScopedExternalFileSystem(const std::string& mount_name, 249 ScopedExternalFileSystem(const std::string& mount_name,
250 FileSystemType type, 250 FileSystemType type,
251 const FilePath& path); 251 const FilePath& path);
252 ~ScopedExternalFileSystem(); 252 ~ScopedExternalFileSystem();
253 253
254 FilePath GetVirtualRootPath() const; 254 FilePath GetVirtualRootPath() const;
255 255
256 private: 256 private:
257 const std::string mount_name_; 257 const std::string mount_name_;
258 }; 258 };
259 259
260 } // namespace fileapi 260 } // namespace fileapi
261 261
262 #endif // WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_ 262 #endif // WEBKIT_FILEAPI_ISOLATED_CONTEXT_H_
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