public unsafe int ReadRandomSectors(TimeSpan timeout, int stopOnNthFail = 0)
{
int goodSectors = Params.Image.GoodSectors;
int imageTracks = Params.Image.SizeTracks;
try
{
bool useTimeout = timeout > TimeSpan.Zero;
DateTime timeoutTime = DateTime.Now.Add(timeout);
Timer sectorTimer = new Timer();
Random random = new Random();
MList <Point> sectorArray = new MList <Point>(Params.Image.SizeSectors);
for (int track = Params.FirstTrack; track < Params.LastTrack; track++)
{
if (Params.Side == DiskSide.Side0 && track % 2 != 0)
{
continue;
}
if (Params.Side == DiskSide.Side1 && track % 2 != 1)
{
continue;
}
for (int sector = 0; sector < Params.Image[track].Layout.Cnt; sector++)
{
if (Params.Image[track][sector].ProcessResult != SectorProcessResult.Good)
{
sectorArray.Add(new Point(track, sector));
}
}
}
int prevCylinder = -1;
int failCounter = 0;
while (sectorArray.Cnt > 0 && ((useTimeout && DateTime.Now < timeoutTime) || !useTimeout) && (stopOnNthFail == 0 || (failCounter < stopOnNthFail)))
{
int index = random.Next(sectorArray.Cnt);
int track = sectorArray[index].X;
int sectorIndex = sectorArray[index].Y;
SectorInfo sector = Params.Image[track][sectorIndex];
TrackFormat tf = Params.Image[track];
int error = 23;
Params.Map.MarkSectorAsProcessing(track, sectorIndex);
bool badWritten = sector.ProcessResult == SectorProcessResult.Bad;
for (int attempt = 0; attempt < Params.SectorReadAttempts; attempt++)
{
if (Aborted)
{
goto abort;
}
int cylinder = track / 2;
if (cylinder == prevCylinder)
{
int tempCylinder = cylinder + (random.Next(2) == 0 ? -1 : 1);
tempCylinder = Math.Max(0, tempCylinder);
tempCylinder = Math.Min(tempCylinder, Params.LastTrack / 2);
Driver.Seek(DriverHandle, tempCylinder * 2);
if (Aborted)
{
goto abort;
}
Thread.Sleep(random.Next((int)TrackFormat.SpinTimeStandard)); // Ждем случайное время чтобы приехать на нужный цилиндр в случайной точке.
}
prevCylinder = cylinder;
Driver.Seek(DriverHandle, track);
if (Aborted)
{
goto abort;
}
WinApi.RtlZeroMemory(memoryHandle, (UIntPtr)sector.SizeBytes);
sectorTimer.Start();
error = Driver.ReadSectorF(DriverHandle, memoryHandle, sector.Cylinder, sector.SectorNumber, sector.SizeCode, track & 1, sector.Head, 0x0a, 0xff);
sectorTimer.Stop();
if (error == 0)
{
Params.Image.WriteGoodSector(memoryHandle, tf, sectorIndex);
sectorArray.RemoveAt(index);
failCounter = 0;
timeoutTime = DateTime.Now.Add(timeout);
break;
}
// Ошибка 27 может быть как в случае отсутствия заголовка, так и в случае когда заголовок имеет ошибку CRC.
// Тут сложный вопрос что с этим делать: писать сектор как CrcError или как NoHeader. Пишется как NoHeader.
// (проверить была ошибка CRC в заголовке или заголовок вообще не был найден можно сравнив sectorTimer.ElapsedMs с временем вращения tf.SpinTime)
bool noHeader = error == 21 || error == 1112 || error == 27;
Make30HeadPositionings(error, track);
if (error == 23)
{
Params.Image.WriteBadSector(memoryHandle, tf, sectorIndex);
badWritten = true;
}
else if (noHeader && !badWritten)
{
Params.Image.WriteNoHeader(memoryHandle, tf, sectorIndex);
}
}
failCounter++;
}
return(Params.Image.GoodSectors - goodSectors);
abort:
Log.Info?.Out("Чтение прервано.");
}
finally
{
Params.Map?.ClearHighlight(MapCell.Processing);
}
return(Params.Image.GoodSectors - goodSectors);
}
public unsafe int ReadRandomSectors(TimeSpan timeout, int stopOnNthFail = 0)
{
int goodSectors = Params.Image.GoodSectors;
int imageTracks = Params.Image.SizeTracks;
int *trackHead = stackalloc int[imageTracks];
for (int i = 0; i < imageTracks; i++)
{
trackHead[i] = -1;
}
try
{
bool useTimeout = timeout > TimeSpan.Zero;
DateTime timeoutTime = DateTime.Now.Add(timeout);
Timer sectorTimer = new Timer();
Random random = new Random();
UpperSideHead upperSideHead = Params.UpperSideHead;
bool upperSideHeadScanned = false;
MList <int> sectorArray = new MList <int>(Params.Image.SizeSectors);
for (int i = Params.FirstSectorNum; i < Params.LastSectorNum; i++)
{
int track = i / Params.Image.SectorsOnTrack;
if (Params.Side == DiskSide.Side0 && track % 2 != 0)
{
continue;
}
if (Params.Side == DiskSide.Side1 && track % 2 != 1)
{
continue;
}
if (Params.Image.Sectors[i] != SectorProcessResult.Good)
{
sectorArray.Add(i);
}
}
int prevCylinder = -1;
int failCounter = 0;
while (sectorArray.Cnt > 0 && ((useTimeout && DateTime.Now < timeoutTime) || !useTimeout) && (stopOnNthFail == 0 || (failCounter < stopOnNthFail)))
{
int index = random.Next(sectorArray.Cnt);
int sectorNum = sectorArray.Data[index];
int track = sectorNum / Params.SectorsOnTrack;
SectorInfo sector = Params.Image.StandardFormat.Layout.Data[sectorNum - track * Params.SectorsOnTrack];
int error = 23;
Params.Image.Map?.ClearHighlight(MapCell.Processing);
Params.Image.Map?.MarkAsProcessing(sectorNum);
if (Params.UpperSideHeadAutodetect && trackHead[track] != -1)
{
upperSideHead = (UpperSideHead)trackHead[track];
}
if (Params.UpperSideHeadAutodetect && !upperSideHeadScanned && (track & 1) != 0 && trackHead[track] == -1)
{
UpperSideHead ush = upperSideHead;
if (ScanHeadParameter(ref ush, track, Params.CurrentTrackFormat) == 0)
{
upperSideHead = ush;
trackHead[track] = (int)upperSideHead;
Log.Trace?.Out($"Параметр Head для трека {track} определен: {(int)upperSideHead}");
}
else
{
Log.Trace?.Out($"Параметр Head для трека {track} определить не удалось.");
}
upperSideHeadScanned = true;
}
bool noHeader = false;
bool badWritten = Params.Image.Sectors[sectorNum] == SectorProcessResult.Bad;
for (int attempt = 0; attempt < Params.SectorReadAttempts; attempt++)
{
if (Aborted)
{
goto abort;
}
int cylinder = track / 2;
if (cylinder == prevCylinder)
{
int tempCylinder = cylinder + (random.Next(2) == 0 ? -1 : 1);
tempCylinder = Math.Max(0, tempCylinder);
tempCylinder = Math.Min(tempCylinder, Params.LastTrack / 2);
Driver.Seek(DriverHandle, tempCylinder * 2);
if (Aborted)
{
goto abort;
}
Thread.Sleep(random.Next((int)TrackFormat.SpinTimeStandard)); // Ждем случайное время чтобы приехать на нужный цилиндр в случайной точке.
}
prevCylinder = cylinder;
Driver.Seek(DriverHandle, track);
if (Aborted)
{
goto abort;
}
sectorTimer.Start();
error = Driver.ReadSector(DriverHandle, memoryHandle, track, sector.SectorNumber, upperSideHead, sector.SizeCode);
sectorTimer.Stop();
if (error == 0)
{
goto sectorReadSuccessfully;
}
noHeader = error == 21 || (error == 27 && sectorTimer.ElapsedMs > Params.CurrentTrackFormat.SpinTime);
Make30HeadPositionings(error, track);
if (error == 23)
{
Params.Image.WriteBadSectors(sectorNum, memoryHandle, 1, false);
badWritten = true;
}
if (noHeader && track % 2 == 1 && Params.UpperSideHeadAutodetect && trackHead[track] == -1)
{
UpperSideHead ush = upperSideHead;
if (ScanHeadParameter(ref ush, track, Params.CurrentTrackFormat) == 0)
{
upperSideHead = ush;
trackHead[track] = (int)upperSideHead;
Log.Trace?.Out($"Параметр Head для трека {track} определен: {(int)upperSideHead}");
attempt--;
}
else
{
Log.Trace?.Out($"Параметр Head для трека {track} определить не удалось.");
}
}
}
failCounter++;
if (!badWritten)
{
Params.Image.WriteBadSectors(sectorNum, 1, noHeader);
}
continue;
sectorReadSuccessfully:
Params.Image.WriteGoodSectors(sectorNum, memoryHandle, 1);
trackHead[track] = (int)upperSideHead;
sectorArray.RemoveAt(index);
failCounter = 0;
timeoutTime = DateTime.Now.Add(timeout);
}
return(Params.Image.GoodSectors - goodSectors);
abort:
Log.Info?.Out("Чтение прервано.");
}
finally
{
Params.Image.Map?.ClearHighlight(MapCell.Processing);
}
return(Params.Image.GoodSectors - goodSectors);
}