// This function walks all watched files, collects changes, and updates state private FileChangeList ComputeChangesAndUpdateState() { _version++; var changes = new FileChangeList(); WIN32_FIND_DATAW fileData = new WIN32_FIND_DATAW(); unsafe { WIN32_FIND_DATAW *pFileData = &fileData; for (int index = 0; index < _directories.Count; index++) { var directory = _directories[index]; var handle = DllImports.FindFirstFileExW(directory, FINDEX_INFO_LEVELS.FindExInfoBasic, pFileData, FINDEX_SEARCH_OPS.FindExSearchNameMatch, IntPtr.Zero, DllImports.FIND_FIRST_EX_LARGE_FETCH); if (handle == DllImports.INVALID_HANDLE_VALUE) // directory got deleted { if (Tracing.Switch.ShouldTrace(TraceEventType.Information)) { Tracing.TraceEvent(TraceEventType.Warning, 2, "Directory could not be opened {0}", directory); } _directories.Remove(directory); continue; } try { do { if (IsSpecial(fileData.cFileName)) { continue; } if (!IsWatched(fileData.cFileName)) { continue; } UpdateState(directory, ref changes, ref fileData, fileData.cFileName); }while (DllImports.FindNextFileW(handle, pFileData)); } finally { DllImports.FindClose(handle); } } } foreach (var value in _state) { if (value._version != _version) { changes.AddRemoved(value.Directory, value.Path); _state.Remove(value.Directory, value.Path); } } return(changes); }
// This function walks all watched files, collects changes, and updates state private FileChangeList ComputeChangesAndUpdateState() { _version++; var enumerator = new FileSystemChangeEnumerator(this, Path, EnumerationOptions); while (enumerator.MoveNext()) { // Ignore `.Current` } var changes = enumerator.Changes; foreach (var value in _state) { if (value._version != _version) { changes.AddRemoved(value.Directory, value.Path); _state.Remove(value.Directory, value.Path); } } return(changes); }