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Side by Side Diff: net/disk_cache/blockfile/file.h

Issue 266243004: Clang format slam. Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 6 years, 7 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 // See net/disk_cache/disk_cache.h for the public interface of the cache. 5 // See net/disk_cache/disk_cache.h for the public interface of the cache.
6 6
7 #ifndef NET_DISK_CACHE_BLOCKFILE_FILE_H_ 7 #ifndef NET_DISK_CACHE_BLOCKFILE_FILE_H_
8 #define NET_DISK_CACHE_BLOCKFILE_FILE_H_ 8 #define NET_DISK_CACHE_BLOCKFILE_FILE_H_
9 9
10 #include "base/files/file.h" 10 #include "base/files/file.h"
(...skipping 13 matching lines...) Expand all
24 // negative if an error occurred. 24 // negative if an error occurred.
25 virtual void OnFileIOComplete(int bytes_copied) = 0; 25 virtual void OnFileIOComplete(int bytes_copied) = 0;
26 26
27 protected: 27 protected:
28 virtual ~FileIOCallback() {} 28 virtual ~FileIOCallback() {}
29 }; 29 };
30 30
31 // Simple wrapper around a file that allows asynchronous operations. 31 // Simple wrapper around a file that allows asynchronous operations.
32 class NET_EXPORT_PRIVATE File : public base::RefCounted<File> { 32 class NET_EXPORT_PRIVATE File : public base::RefCounted<File> {
33 friend class base::RefCounted<File>; 33 friend class base::RefCounted<File>;
34
34 public: 35 public:
35 File(); 36 File();
36 // mixed_mode set to true enables regular synchronous operations for the file. 37 // mixed_mode set to true enables regular synchronous operations for the file.
37 explicit File(bool mixed_mode); 38 explicit File(bool mixed_mode);
38 39
39 // Initializes the object to use the passed in file instead of opening it with 40 // Initializes the object to use the passed in file instead of opening it with
40 // the Init() call. No asynchronous operations can be performed with this 41 // the Init() call. No asynchronous operations can be performed with this
41 // object. 42 // object.
42 explicit File(base::File file); 43 explicit File(base::File file);
43 44
44 // Initializes the object to point to a given file. The file must aready exist 45 // Initializes the object to point to a given file. The file must aready exist
45 // on disk, and allow shared read and write. 46 // on disk, and allow shared read and write.
46 bool Init(const base::FilePath& name); 47 bool Init(const base::FilePath& name);
47 48
48 // Returns true if the file was opened properly. 49 // Returns true if the file was opened properly.
49 bool IsValid() const; 50 bool IsValid() const;
50 51
51 // Performs synchronous IO. 52 // Performs synchronous IO.
52 bool Read(void* buffer, size_t buffer_len, size_t offset); 53 bool Read(void* buffer, size_t buffer_len, size_t offset);
53 bool Write(const void* buffer, size_t buffer_len, size_t offset); 54 bool Write(const void* buffer, size_t buffer_len, size_t offset);
54 55
55 // Performs asynchronous IO. callback will be called when the IO completes, 56 // Performs asynchronous IO. callback will be called when the IO completes,
56 // as an APC on the thread that queued the operation. 57 // as an APC on the thread that queued the operation.
57 bool Read(void* buffer, size_t buffer_len, size_t offset, 58 bool Read(void* buffer,
58 FileIOCallback* callback, bool* completed); 59 size_t buffer_len,
59 bool Write(const void* buffer, size_t buffer_len, size_t offset, 60 size_t offset,
60 FileIOCallback* callback, bool* completed); 61 FileIOCallback* callback,
62 bool* completed);
63 bool Write(const void* buffer,
64 size_t buffer_len,
65 size_t offset,
66 FileIOCallback* callback,
67 bool* completed);
61 68
62 // Sets the file's length. The file is truncated or extended with zeros to 69 // Sets the file's length. The file is truncated or extended with zeros to
63 // the new length. 70 // the new length.
64 bool SetLength(size_t length); 71 bool SetLength(size_t length);
65 size_t GetLength(); 72 size_t GetLength();
66 73
67 // Blocks until |num_pending_io| IO operations complete. 74 // Blocks until |num_pending_io| IO operations complete.
68 static void WaitForPendingIO(int* num_pending_io); 75 static void WaitForPendingIO(int* num_pending_io);
69 76
70 // Drops current pending operations without waiting for them to complete. 77 // Drops current pending operations without waiting for them to complete.
71 static void DropPendingIO(); 78 static void DropPendingIO();
72 79
73 protected: 80 protected:
74 virtual ~File(); 81 virtual ~File();
75 82
76 // Returns the handle or file descriptor. 83 // Returns the handle or file descriptor.
77 base::PlatformFile platform_file() const; 84 base::PlatformFile platform_file() const;
78 85
79 private: 86 private:
80 // Performs the actual asynchronous write. If notify is set and there is no 87 // Performs the actual asynchronous write. If notify is set and there is no
81 // callback, the call will be re-synchronized. 88 // callback, the call will be re-synchronized.
82 bool AsyncWrite(const void* buffer, size_t buffer_len, size_t offset, 89 bool AsyncWrite(const void* buffer,
83 FileIOCallback* callback, bool* completed); 90 size_t buffer_len,
91 size_t offset,
92 FileIOCallback* callback,
93 bool* completed);
84 94
85 // Infrastructure for async IO. 95 // Infrastructure for async IO.
86 int DoRead(void* buffer, size_t buffer_len, size_t offset); 96 int DoRead(void* buffer, size_t buffer_len, size_t offset);
87 int DoWrite(const void* buffer, size_t buffer_len, size_t offset); 97 int DoWrite(const void* buffer, size_t buffer_len, size_t offset);
88 void OnOperationComplete(FileIOCallback* callback, int result); 98 void OnOperationComplete(FileIOCallback* callback, int result);
89 99
90 bool init_; 100 bool init_;
91 bool mixed_; 101 bool mixed_;
92 base::File base_file_; // Regular, asynchronous IO handle. 102 base::File base_file_; // Regular, asynchronous IO handle.
93 base::File sync_base_file_; // Synchronous IO handle. 103 base::File sync_base_file_; // Synchronous IO handle.
94 104
95 DISALLOW_COPY_AND_ASSIGN(File); 105 DISALLOW_COPY_AND_ASSIGN(File);
96 }; 106 };
97 107
98 } // namespace disk_cache 108 } // namespace disk_cache
99 109
100 #endif // NET_DISK_CACHE_BLOCKFILE_FILE_H_ 110 #endif // NET_DISK_CACHE_BLOCKFILE_FILE_H_
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