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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 "net/disk_cache/blockfile/mapped_file.h" | 5 #include "net/disk_cache/blockfile/mapped_file.h" |
6 | 6 |
7 #include "base/files/file_path.h" | 7 #include "base/files/file_path.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
10 #include "net/disk_cache/disk_cache.h" | 10 #include "net/disk_cache/disk_cache.h" |
11 | 11 |
12 namespace disk_cache { | 12 namespace disk_cache { |
13 | 13 |
14 void* MappedFile::Init(const base::FilePath& name, size_t size) { | 14 void* MappedFile::Init(const base::FilePath& name, size_t size) { |
15 DCHECK(!init_); | 15 DCHECK(!init_); |
16 if (init_ || !File::Init(name)) | 16 if (init_ || !File::Init(name)) |
17 return NULL; | 17 return NULL; |
18 | 18 |
19 buffer_ = NULL; | 19 buffer_ = NULL; |
20 init_ = true; | 20 init_ = true; |
21 section_ = CreateFileMapping(platform_file(), NULL, PAGE_READWRITE, 0, | 21 section_ = CreateFileMapping( |
22 static_cast<DWORD>(size), NULL); | 22 platform_file(), NULL, PAGE_READWRITE, 0, static_cast<DWORD>(size), NULL); |
23 if (!section_) | 23 if (!section_) |
24 return NULL; | 24 return NULL; |
25 | 25 |
26 buffer_ = MapViewOfFile(section_, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, size); | 26 buffer_ = MapViewOfFile(section_, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, size); |
27 DCHECK(buffer_); | 27 DCHECK(buffer_); |
28 view_size_ = size; | 28 view_size_ = size; |
29 | 29 |
30 // Make sure we detect hardware failures reading the headers. | 30 // Make sure we detect hardware failures reading the headers. |
31 size_t temp_len = size ? size : 4096; | 31 size_t temp_len = size ? size : 4096; |
32 scoped_ptr<char[]> temp(new char[temp_len]); | 32 scoped_ptr<char[]> temp(new char[temp_len]); |
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46 } | 46 } |
47 | 47 |
48 if (section_) | 48 if (section_) |
49 CloseHandle(section_); | 49 CloseHandle(section_); |
50 } | 50 } |
51 | 51 |
52 void MappedFile::Flush() { | 52 void MappedFile::Flush() { |
53 } | 53 } |
54 | 54 |
55 } // namespace disk_cache | 55 } // namespace disk_cache |
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