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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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/files/file_path_watcher.h" | 5 #include "base/files/file_path_watcher.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/file_util.h" | 8 #include "base/file_util.h" |
| 9 #include "base/files/file.h" |
9 #include "base/files/file_path.h" | 10 #include "base/files/file_path.h" |
10 #include "base/logging.h" | 11 #include "base/logging.h" |
11 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
12 #include "base/message_loop/message_loop_proxy.h" | 13 #include "base/message_loop/message_loop_proxy.h" |
13 #include "base/time/time.h" | 14 #include "base/time/time.h" |
14 #include "base/win/object_watcher.h" | 15 #include "base/win/object_watcher.h" |
15 | 16 |
16 namespace base { | 17 namespace base { |
17 | 18 |
18 namespace { | 19 namespace { |
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141 DCHECK(object == handle_); | 142 DCHECK(object == handle_); |
142 // Make sure we stay alive through the body of this function. | 143 // Make sure we stay alive through the body of this function. |
143 scoped_refptr<FilePathWatcherImpl> keep_alive(this); | 144 scoped_refptr<FilePathWatcherImpl> keep_alive(this); |
144 | 145 |
145 if (!UpdateWatch()) { | 146 if (!UpdateWatch()) { |
146 callback_.Run(target_, true /* error */); | 147 callback_.Run(target_, true /* error */); |
147 return; | 148 return; |
148 } | 149 } |
149 | 150 |
150 // Check whether the event applies to |target_| and notify the callback. | 151 // Check whether the event applies to |target_| and notify the callback. |
151 PlatformFileInfo file_info; | 152 File::Info file_info; |
152 bool file_exists = GetFileInfo(target_, &file_info); | 153 bool file_exists = GetFileInfo(target_, &file_info); |
153 if (file_exists && (last_modified_.is_null() || | 154 if (file_exists && (last_modified_.is_null() || |
154 last_modified_ != file_info.last_modified)) { | 155 last_modified_ != file_info.last_modified)) { |
155 last_modified_ = file_info.last_modified; | 156 last_modified_ = file_info.last_modified; |
156 first_notification_ = Time::Now(); | 157 first_notification_ = Time::Now(); |
157 callback_.Run(target_, false); | 158 callback_.Run(target_, false); |
158 } else if (file_exists && !first_notification_.is_null()) { | 159 } else if (file_exists && !first_notification_.is_null()) { |
159 // The target's last modification time is equal to what's on record. This | 160 // The target's last modification time is equal to what's on record. This |
160 // means that either an unrelated event occurred, or the target changed | 161 // means that either an unrelated event occurred, or the target changed |
161 // again (file modification times only have a resolution of 1s). Comparing | 162 // again (file modification times only have a resolution of 1s). Comparing |
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222 return false; | 223 return false; |
223 } | 224 } |
224 | 225 |
225 return true; | 226 return true; |
226 } | 227 } |
227 | 228 |
228 bool FilePathWatcherImpl::UpdateWatch() { | 229 bool FilePathWatcherImpl::UpdateWatch() { |
229 if (handle_ != INVALID_HANDLE_VALUE) | 230 if (handle_ != INVALID_HANDLE_VALUE) |
230 DestroyWatch(); | 231 DestroyWatch(); |
231 | 232 |
232 PlatformFileInfo file_info; | 233 File::Info file_info; |
233 if (GetFileInfo(target_, &file_info)) { | 234 if (GetFileInfo(target_, &file_info)) { |
234 last_modified_ = file_info.last_modified; | 235 last_modified_ = file_info.last_modified; |
235 first_notification_ = Time::Now(); | 236 first_notification_ = Time::Now(); |
236 } | 237 } |
237 | 238 |
238 // Start at the target and walk up the directory chain until we succesfully | 239 // Start at the target and walk up the directory chain until we succesfully |
239 // create a watch handle in |handle_|. |child_dirs| keeps a stack of child | 240 // create a watch handle in |handle_|. |child_dirs| keeps a stack of child |
240 // directories stripped from target, in reverse order. | 241 // directories stripped from target, in reverse order. |
241 std::vector<FilePath> child_dirs; | 242 std::vector<FilePath> child_dirs; |
242 FilePath watched_path(target_); | 243 FilePath watched_path(target_); |
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282 handle_ = INVALID_HANDLE_VALUE; | 283 handle_ = INVALID_HANDLE_VALUE; |
283 } | 284 } |
284 | 285 |
285 } // namespace | 286 } // namespace |
286 | 287 |
287 FilePathWatcher::FilePathWatcher() { | 288 FilePathWatcher::FilePathWatcher() { |
288 impl_ = new FilePathWatcherImpl(); | 289 impl_ = new FilePathWatcherImpl(); |
289 } | 290 } |
290 | 291 |
291 } // namespace base | 292 } // namespace base |
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