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Side by Side Diff: base/platform_file_win.cc

Issue 10701050: net: Implement canceling of all async operations in FileStream. (Closed) Base URL: https://src.chromium.org/chrome/trunk/src/
Patch Set: Created 8 years, 1 month 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 #include "base/platform_file.h" 5 #include "base/platform_file.h"
6 6
7 #include "base/file_path.h" 7 #include "base/file_path.h"
8 #include "base/logging.h" 8 #include "base/logging.h"
9 #include "base/threading/thread_restrictions.h" 9 #include "base/threading/thread_restrictions.h"
10 10
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108 } 108 }
109 109
110 return file; 110 return file;
111 } 111 }
112 112
113 bool ClosePlatformFile(PlatformFile file) { 113 bool ClosePlatformFile(PlatformFile file) {
114 base::ThreadRestrictions::AssertIOAllowed(); 114 base::ThreadRestrictions::AssertIOAllowed();
115 return (CloseHandle(file) != 0); 115 return (CloseHandle(file) != 0);
116 } 116 }
117 117
118 int64 SeekPlatformFile(PlatformFile file,
119 PlatformFileWhence whence,
120 int64 offset) {
121 base::ThreadRestrictions::AssertIOAllowed();
122 if (file < 0 || offset < 0)
123 return -1;
124
125 LARGE_INTEGER distance, res;
126 distance.QuadPart = offset;
127 DWORD move_method = static_cast<DWORD>(whence);
128 if (!SetFilePointerEx(file, distance, &res, move_method))
129 return -1;
130 return res.QuadPart;
131 }
132
118 int ReadPlatformFile(PlatformFile file, int64 offset, char* data, int size) { 133 int ReadPlatformFile(PlatformFile file, int64 offset, char* data, int size) {
119 base::ThreadRestrictions::AssertIOAllowed(); 134 base::ThreadRestrictions::AssertIOAllowed();
120 if (file == kInvalidPlatformFileValue) 135 if (file == kInvalidPlatformFileValue)
121 return -1; 136 return -1;
122 137
123 LARGE_INTEGER offset_li; 138 LARGE_INTEGER offset_li;
124 offset_li.QuadPart = offset; 139 offset_li.QuadPart = offset;
125 140
126 OVERLAPPED overlapped = {0}; 141 OVERLAPPED overlapped = {0};
127 overlapped.Offset = offset_li.LowPart; 142 overlapped.Offset = offset_li.LowPart;
(...skipping 10 matching lines...) Expand all
138 153
139 int ReadPlatformFileAtCurrentPos(PlatformFile file, char* data, int size) { 154 int ReadPlatformFileAtCurrentPos(PlatformFile file, char* data, int size) {
140 return ReadPlatformFile(file, 0, data, size); 155 return ReadPlatformFile(file, 0, data, size);
141 } 156 }
142 157
143 int ReadPlatformFileNoBestEffort(PlatformFile file, int64 offset, char* data, 158 int ReadPlatformFileNoBestEffort(PlatformFile file, int64 offset, char* data,
144 int size) { 159 int size) {
145 return ReadPlatformFile(file, offset, data, size); 160 return ReadPlatformFile(file, offset, data, size);
146 } 161 }
147 162
163 int ReadPlatformFileCurPosNoBestEffort(PlatformFile file,
164 char* data, int size) {
165 return ReadPlatformFile(file, 0, data, size);
166 }
167
148 int WritePlatformFile(PlatformFile file, int64 offset, 168 int WritePlatformFile(PlatformFile file, int64 offset,
149 const char* data, int size) { 169 const char* data, int size) {
150 base::ThreadRestrictions::AssertIOAllowed(); 170 base::ThreadRestrictions::AssertIOAllowed();
151 if (file == kInvalidPlatformFileValue) 171 if (file == kInvalidPlatformFileValue)
152 return -1; 172 return -1;
153 173
154 LARGE_INTEGER offset_li; 174 LARGE_INTEGER offset_li;
155 offset_li.QuadPart = offset; 175 offset_li.QuadPart = offset;
156 176
157 OVERLAPPED overlapped = {0}; 177 OVERLAPPED overlapped = {0};
158 overlapped.Offset = offset_li.LowPart; 178 overlapped.Offset = offset_li.LowPart;
159 overlapped.OffsetHigh = offset_li.HighPart; 179 overlapped.OffsetHigh = offset_li.HighPart;
160 180
161 DWORD bytes_written; 181 DWORD bytes_written;
162 if (::WriteFile(file, data, size, &bytes_written, &overlapped) != 0) 182 if (::WriteFile(file, data, size, &bytes_written, &overlapped) != 0)
163 return bytes_written; 183 return bytes_written;
164 184
165 return -1; 185 return -1;
166 } 186 }
167 187
168 int WritePlatformFileAtCurrentPos(PlatformFile file, const char* data, 188 int WritePlatformFileAtCurrentPos(PlatformFile file, const char* data,
169 int size) { 189 int size) {
170 return WritePlatformFile(file, 0, data, size); 190 return WritePlatformFile(file, 0, data, size);
171 } 191 }
172 192
193 int WritePlatformFileCurPosNoBestEffort(PlatformFile file,
194 const char* data, int size) {
195 return WritePlatformFile(file, 0, data, size);
196 }
197
173 bool TruncatePlatformFile(PlatformFile file, int64 length) { 198 bool TruncatePlatformFile(PlatformFile file, int64 length) {
174 base::ThreadRestrictions::AssertIOAllowed(); 199 base::ThreadRestrictions::AssertIOAllowed();
175 if (file == kInvalidPlatformFileValue) 200 if (file == kInvalidPlatformFileValue)
176 return false; 201 return false;
177 202
178 // Get the current file pointer. 203 // Get the current file pointer.
179 LARGE_INTEGER file_pointer; 204 LARGE_INTEGER file_pointer;
180 LARGE_INTEGER zero; 205 LARGE_INTEGER zero;
181 zero.QuadPart = 0; 206 zero.QuadPart = 0;
182 if (::SetFilePointerEx(file, zero, &file_pointer, FILE_CURRENT) == 0) 207 if (::SetFilePointerEx(file, zero, &file_pointer, FILE_CURRENT) == 0)
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229 info->is_directory = 254 info->is_directory =
230 (file_info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0; 255 (file_info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
231 info->is_symbolic_link = false; // Windows doesn't have symbolic links. 256 info->is_symbolic_link = false; // Windows doesn't have symbolic links.
232 info->last_modified = base::Time::FromFileTime(file_info.ftLastWriteTime); 257 info->last_modified = base::Time::FromFileTime(file_info.ftLastWriteTime);
233 info->last_accessed = base::Time::FromFileTime(file_info.ftLastAccessTime); 258 info->last_accessed = base::Time::FromFileTime(file_info.ftLastAccessTime);
234 info->creation_time = base::Time::FromFileTime(file_info.ftCreationTime); 259 info->creation_time = base::Time::FromFileTime(file_info.ftCreationTime);
235 return true; 260 return true;
236 } 261 }
237 262
238 } // namespace base 263 } // namespace base
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