// 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);
}
