public void Start()
{
string PrintName = string.Empty;
int Width = 70;
try
{
if (Error)
{
Close();
return;
}
// First thing: build a file list.
StatusString = "Getting volume bitmap";
if (!Volume.GetBitmap())
{
StatusString = "Could not get volume " + DriveName + " bitmap";
Error = true;
Close();
return;
}
UpdateDrawing = true;
_lastBMPUpdate = DateTime.Now;
if (PleaseStop)
{
Close();
return;
}
StatusString = "Obtaining volume geometry";
if (!Volume.PartInfo.GetPartitionInfo())
{
StatusString = "Could not obtain volume " + DriveName + " geometry";
Error = true;
Close();
return;
}
if (PleaseStop)
{
Close();
return;
}
StatusString = "Obtaining partition information";
if (!Volume.PartInfo.GetPartitionDetails())
{
StatusString = "Could not obtain partition " + DriveName + " information";
Error = true;
Close();
return;
}
if (PleaseStop)
{
Close();
return;
}
StatusString = "Building file database for volume " + DriveName;
if (!Volume.BuildFileList(this))
{
StatusString = "Could not build file database for volume " + DriveName;
Error = true;
Close();
return;
}
if (PleaseStop)
{
Close();
return;
}
StatusString = "Analyzing database for " + DriveName;
UInt64 TotalClusters = 0;
uint i;
for (i = 0; i < Volume.DBFileCount; i++)
{
TotalClusters += Volume.GetDBFile(i).Clusters;
}
// Defragment!
UInt64 ClustersProgress = 0;
// Find first free LCN for speedier searches ...
UInt64 FirstFreeLCN;
Volume.FindFreeRange(0, 1, out FirstFreeLCN);
if (PleaseStop)
{
Close();
return;
}
// Analyze?
if (DefragType == DefragMethod.ANALYZE)
{
uint j;
Report.RootPath = Volume.RootPath;
Report.Label = Volume.PartInfo.Name;
Report.Serial = Volume.PartInfo.Serial;
Report.FileSystem = Volume.PartInfo.FileSystem;
Report.FreeBytes = Volume.PartInfo.FreeBytes;
Report.ClusterCount = Volume.PartInfo.ClusterCount;
Report.ClusterSize = Volume.PartInfo.ClusterSize;
Report.FraggedFiles.Clear();
Report.UnfraggedFiles.Clear();
Report.UnmovableFiles.Clear();
Report.FilesCount = (ulong)Volume.DBFileCount - (ulong)Volume.DBDirCount;
Report.DirsCount = (ulong)Volume.DBDirCount;
Report.DiskSizeBytes = Volume.PartInfo.TotalBytes;
Report.FilesSizeClusters = 0;
Report.FilesSlackBytes = 0;
Report.FilesSizeBytes = 0;
Report.FilesFragments = 0;
for (j = 0; j < Volume.DBFileCount; j++)
{
var Info = Volume.GetDBFile(j);
Report.FilesFragments += (uint)Utils.Max(1UL, (ulong)Info.Fragments.Count); // add 1 fragment even for 0 bytes/0 cluster files
if (!Info.Attributes.Process)
{
continue;
}
StatusString = Volume.GetDBDir(Info.DirIndice) + Info.Name;
Report.FilesSizeClusters += Info.Clusters;
Report.FilesSizeBytes += Info.Size;
if (Info.Attributes.Unmovable)
{
Report.UnmovableFiles.Add(j);
}
if (Info.Fragments.Count > 1)
{
Report.FraggedFiles.Add(j);
}
else
{
Report.UnfraggedFiles.Add(j);
}
StatusPercent = (j / (double)Report.FilesCount) * 100.0f;
}
Report.FilesSizeOnDisk = Report.FilesSizeClusters * Volume.PartInfo.ClusterSize;
Report.FilesSlackBytes = Report.FilesSizeOnDisk - Report.FilesSizeBytes;
Report.PercentFragged = 100.0f * (Report.FraggedFiles.Count / (double)Report.FilesCount);
var Percent = (10000 * Report.FilesSlackBytes) / Report.FilesSizeOnDisk;
Report.PercentSlack = (double)Percent / 100.0f;
}
else
{
// Go through all the files and ... defragment them!
for (i = 0; i < Volume.DBFileCount; i++)
{
// What? They want us to pause? Oh ok.
if (PleasePause)
{
StatusString = "Paused";
PleasePause = false;
while (PleasePause == false)
{
Thread.Sleep(50);
}
PleasePause = false;
}
if (PleaseStop)
{
StatusString = "Stopping";
break;
}
//
var Info = Volume.GetDBFile(i);
var PreviousClusters = ClustersProgress;
ClustersProgress += Info.Clusters;
if (!Info.Attributes.Process)
{
continue;
}
if (!DoLimitLength)
{
StatusString = Volume.GetDBDir(Info.DirIndice) + Info.Name;
}
else
{
PrintName = Utils.FitName(Volume.GetDBDir(Info.DirIndice), Info.Name, Width);
StatusString = PrintName;
}
// Calculate percentage complete
StatusPercent = 100.0f * (PreviousClusters / (double)TotalClusters);
// Can't defrag directories yet
if (Info.Attributes.Directory)
{
continue;
}
// Can't defrag 0 byte files :)
if (Info.Fragments.Count == 0)
{
continue;
}
// If doing fast defrag, skip non-fragmented files
// Note: This assumes that the extents stored in Info.Fragments
// are consolidated. I.e. we assume it is NOT the case that
// two extents account for a sequential range of (non-
// fragmented) clusters.
if (Info.Fragments.Count == 1 && DefragType == DefragMethod.FASTDEFRAG)
{
continue;
}
// Otherwise, defrag0rize it!
int Retry = 3; // retry a few times
while (Retry > 0)
{
// Find a place that can fit the file
UInt64 TargetLCN;
var Result = Volume.FindFreeRange(FirstFreeLCN, Info.Clusters, out TargetLCN);
// If yes, try moving it
if (Result)
{
// If we're doing an extensive defrag and the file is already defragmented
// and if its new location would be after its current location, don't
// move it.
if (DefragType == DefragMethod.NORMDEFRAG && Info.Fragments.Count == 1 && TargetLCN > Info.Fragments[0].StartLCN)
{
Retry = 1;
}
else
{
if (Volume.MoveFileDumb((int)i, TargetLCN))
{
Retry = 1; // yay, all done with this file.
Volume.FindFreeRange(0, 1, out FirstFreeLCN);
}
}
}
// Only update bitmap if it's older than 15 seconds
if (DateTime.Now.Subtract(_lastBMPUpdate).TotalSeconds < 15000)
{
Retry = 1;
}
else
if (!Result || Retry != 1)
{ // hmm. Wait for a moment, then update the drive bitmap
//SetStatusString (L"(Reobtaining volume " + DriveName + L" bitmap)");
if (!DoLimitLength)
{
StatusString += " .";
}
if (Volume.GetBitmap())
{
_lastBMPUpdate = DateTime.Now;
if (!DoLimitLength)
{
StatusString = Volume.GetDBDir(Info.DirIndice) + Info.Name;
}
else
{
StatusString = PrintName;
}
Volume.FindFreeRange(0, 1, out FirstFreeLCN);
}
else
{
StatusString = "Could not re-obtain volume " + DriveName + " bitmap";
Error = true;
}
}
Retry--;
}
if (Error)
{
break;
}
}
}
}
catch (ThreadAbortException)
{
}
finally
{
Close();
}
}
