blob: 79f1380a4372cd798cb1dbc529249b0dae2b358d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_BROWSER_FILEAPI_QUOTA_OPEN_FILE_HANDLE_H_
#define WEBKIT_BROWSER_FILEAPI_QUOTA_OPEN_FILE_HANDLE_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "webkit/browser/webkit_storage_browser_export.h"
namespace fileapi {
class QuotaReservation;
class OpenFileHandleContext;
class QuotaReservationBuffer;
// Represents an open file like a file descriptor.
// This should be alive while a consumer keeps a file opened and should be
// deleted when the plugin closes the file.
class WEBKIT_STORAGE_BROWSER_EXPORT OpenFileHandle {
public:
~OpenFileHandle();
// Updates cached file size and consumes quota for that.
// This should be called for each modified file before calling RefreshQuota
// and file close.
// Returns updated base file size that should be used to measure quota
// consumption by difference to this.
int64 UpdateMaxWrittenOffset(int64 offset);
int64 base_file_size() const;
private:
friend class QuotaReservationBuffer;
OpenFileHandle(QuotaReservation* reservation,
OpenFileHandleContext* context);
scoped_refptr<QuotaReservation> reservation_;
scoped_refptr<OpenFileHandleContext> context_;
base::SequenceChecker sequence_checker_;
DISALLOW_COPY_AND_ASSIGN(OpenFileHandle);
};
} // namespace fileapi
#endif // WEBKIT_BROWSER_FILEAPI_QUOTA_OPEN_FILE_HANDLE_H_
|
