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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "net/disk_cache/file.h"
#include "base/notimplemented.h"
#include "net/disk_cache/disk_cache.h"
namespace disk_cache {
File::File(OSFile file)
: init_(true), os_file_(0) {
}
bool File::Init(const std::wstring& name) {
NOTIMPLEMENTED();
return false;
}
File::~File() {
}
OSFile File::os_file() const {
return os_file_;
}
bool File::IsValid() const {
if (!init_)
return false;
return (0 != os_file_);
}
bool File::Read(void* buffer, size_t buffer_len, size_t offset) {
DCHECK(init_);
if (buffer_len > ULONG_MAX || offset > LONG_MAX)
return false;
NOTIMPLEMENTED();
return false;
}
bool File::Write(const void* buffer, size_t buffer_len, size_t offset) {
DCHECK(init_);
if (buffer_len > ULONG_MAX || offset > ULONG_MAX)
return false;
NOTIMPLEMENTED();
return false;
}
// We have to increase the ref counter of the file before performing the IO to
// prevent the completion to happen with an invalid handle (if the file is
// closed while the IO is in flight).
bool File::Read(void* buffer, size_t buffer_len, size_t offset,
FileIOCallback* callback, bool* completed) {
DCHECK(init_);
if (buffer_len > ULONG_MAX || offset > ULONG_MAX)
return false;
NOTIMPLEMENTED();
return false;
}
bool File::Write(const void* buffer, size_t buffer_len, size_t offset,
FileIOCallback* callback, bool* completed) {
DCHECK(init_);
return AsyncWrite(buffer, buffer_len, offset, true, callback, completed);
}
bool File::PostWrite(const void* buffer, size_t buffer_len, size_t offset) {
DCHECK(init_);
return AsyncWrite(buffer, buffer_len, offset, false, NULL, NULL);
}
bool File::AsyncWrite(const void* buffer, size_t buffer_len, size_t offset,
bool notify, FileIOCallback* callback, bool* completed) {
DCHECK(init_);
if (buffer_len > ULONG_MAX || offset > ULONG_MAX)
return false;
NOTIMPLEMENTED();
return false;
}
bool File::SetLength(size_t length) {
DCHECK(init_);
if (length > ULONG_MAX)
return false;
NOTIMPLEMENTED();
return false;
}
size_t File::GetLength() {
DCHECK(init_);
return 0;
}
} // namespace disk_cache
|
