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Side by Side Diff: webkit/browser/fileapi/quota/open_file_handle_context.h

Issue 539143002: Migrate webkit/browser/ to storage/browser/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix android build Created 6 years, 3 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 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 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_BROWSER_FILEAPI_OPEN_FILE_HANDLE_CONTEXT_H_ 5 #include "storage/browser/fileapi/quota/open_file_handle_context.h"
6 #define WEBKIT_BROWSER_FILEAPI_OPEN_FILE_HANDLE_CONTEXT_H_
7
8 #include <map>
9
10 #include "base/basictypes.h"
11 #include "base/files/file_path.h"
12 #include "base/memory/ref_counted.h"
13 #include "base/memory/weak_ptr.h"
14 #include "url/gurl.h"
15 #include "webkit/browser/storage_browser_export.h"
16 #include "webkit/common/fileapi/file_system_types.h"
17
18 namespace storage {
19
20 class QuotaReservationBuffer;
21
22 // This class represents a underlying file of a managed FileSystem file.
23 // The instance keeps alive while at least one consumer keeps an open file
24 // handle.
25 // This class is usually manipulated only via OpenFileHandle.
26 class OpenFileHandleContext : public base::RefCounted<OpenFileHandleContext> {
27 public:
28 OpenFileHandleContext(const base::FilePath& platform_path,
29 QuotaReservationBuffer* reservation_buffer);
30
31 // Updates the max written offset and returns the amount of growth.
32 int64 UpdateMaxWrittenOffset(int64 offset);
33
34 void AddAppendModeWriteAmount(int64 amount);
35
36 const base::FilePath& platform_path() const {
37 return platform_path_;
38 }
39
40 int64 GetEstimatedFileSize() const;
41 int64 GetMaxWrittenOffset() const;
42
43 private:
44 friend class base::RefCounted<OpenFileHandleContext>;
45 virtual ~OpenFileHandleContext();
46
47 int64 initial_file_size_;
48 int64 maximum_written_offset_;
49 int64 append_mode_write_amount_;
50 base::FilePath platform_path_;
51
52 scoped_refptr<QuotaReservationBuffer> reservation_buffer_;
53
54 base::SequenceChecker sequence_checker_;
55
56 DISALLOW_COPY_AND_ASSIGN(OpenFileHandleContext);
57 };
58
59 } // namespace storage
60
61 #endif // WEBKIT_BROWSER_FILEAPI_OPEN_FILE_HANDLE_CONTEXT_H_
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