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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 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 "chrome/browser/file_path_watcher.h" | 5 #include "chrome/browser/file_path_watcher.h" |
| 6 | 6 |
| 7 #include "base/file_path.h" | 7 #include "base/file_path.h" |
| 8 #include "base/file_util.h" | 8 #include "base/file_util.h" |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "base/object_watcher.h" | 10 #include "base/object_watcher.h" |
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| 92 DCHECK(object == handle_); | 92 DCHECK(object == handle_); |
| 93 // Make sure we stay alive through the body of this function. | 93 // Make sure we stay alive through the body of this function. |
| 94 scoped_refptr<FilePathWatcherImpl> keep_alive(this); | 94 scoped_refptr<FilePathWatcherImpl> keep_alive(this); |
| 95 | 95 |
| 96 if (!UpdateWatch()) { | 96 if (!UpdateWatch()) { |
| 97 delegate_->OnError(); | 97 delegate_->OnError(); |
| 98 return; | 98 return; |
| 99 } | 99 } |
| 100 | 100 |
| 101 // Check whether the event applies to |target_| and notify the delegate. | 101 // Check whether the event applies to |target_| and notify the delegate. |
| 102 file_util::FileInfo file_info; | 102 base::PlatformFileInfo file_info; |
| 103 bool file_exists = file_util::GetFileInfo(target_, &file_info); | 103 bool file_exists = file_util::GetFileInfo(target_, &file_info); |
| 104 if (file_exists && (last_modified_.is_null() || | 104 if (file_exists && (last_modified_.is_null() || |
| 105 last_modified_ != file_info.last_modified)) { | 105 last_modified_ != file_info.last_modified)) { |
| 106 last_modified_ = file_info.last_modified; | 106 last_modified_ = file_info.last_modified; |
| 107 first_notification_ = base::Time::Now(); | 107 first_notification_ = base::Time::Now(); |
| 108 delegate_->OnFilePathChanged(target_); | 108 delegate_->OnFilePathChanged(target_); |
| 109 } else if (file_exists && !first_notification_.is_null()) { | 109 } else if (file_exists && !first_notification_.is_null()) { |
| 110 // The target's last modification time is equal to what's on record. This | 110 // The target's last modification time is equal to what's on record. This |
| 111 // means that either an unrelated event occurred, or the target changed | 111 // means that either an unrelated event occurred, or the target changed |
| 112 // again (file modification times only have a resolution of 1s). Comparing | 112 // again (file modification times only have a resolution of 1s). Comparing |
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| 176 return false; | 176 return false; |
| 177 } | 177 } |
| 178 | 178 |
| 179 return true; | 179 return true; |
| 180 } | 180 } |
| 181 | 181 |
| 182 bool FilePathWatcherImpl::UpdateWatch() { | 182 bool FilePathWatcherImpl::UpdateWatch() { |
| 183 if (handle_ != INVALID_HANDLE_VALUE) | 183 if (handle_ != INVALID_HANDLE_VALUE) |
| 184 DestroyWatch(); | 184 DestroyWatch(); |
| 185 | 185 |
| 186 file_util::FileInfo file_info; | 186 base::PlatformFileInfo file_info; |
| 187 if (file_util::GetFileInfo(target_, &file_info)) { | 187 if (file_util::GetFileInfo(target_, &file_info)) { |
| 188 last_modified_ = file_info.last_modified; | 188 last_modified_ = file_info.last_modified; |
| 189 first_notification_ = base::Time::Now(); | 189 first_notification_ = base::Time::Now(); |
| 190 } | 190 } |
| 191 | 191 |
| 192 // Start at the target and walk up the directory chain until we succesfully | 192 // Start at the target and walk up the directory chain until we succesfully |
| 193 // create a watch handle in |handle_|. |child_dirs| keeps a stack of child | 193 // create a watch handle in |handle_|. |child_dirs| keeps a stack of child |
| 194 // directories stripped from target, in reverse order. | 194 // directories stripped from target, in reverse order. |
| 195 std::vector<FilePath> child_dirs; | 195 std::vector<FilePath> child_dirs; |
| 196 FilePath watched_path(target_); | 196 FilePath watched_path(target_); |
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| 234 watcher_.StopWatching(); | 234 watcher_.StopWatching(); |
| 235 FindCloseChangeNotification(handle_); | 235 FindCloseChangeNotification(handle_); |
| 236 handle_ = INVALID_HANDLE_VALUE; | 236 handle_ = INVALID_HANDLE_VALUE; |
| 237 } | 237 } |
| 238 | 238 |
| 239 } // namespace | 239 } // namespace |
| 240 | 240 |
| 241 FilePathWatcher::FilePathWatcher() { | 241 FilePathWatcher::FilePathWatcher() { |
| 242 impl_ = new FilePathWatcherImpl(); | 242 impl_ = new FilePathWatcherImpl(); |
| 243 } | 243 } |
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