private void RefreshCache(long SectorNumber)
{
if (SectorCached == SectorNumber)
{
return;
}
if (SectorCached != -1 && CommitCacheRequired)
{
CommitCacheRequired = false;
StoreGGSector(SectorCached, Cache);
}
var data = LoadGGSector(SectorNumber);
try
{
unsafe
{
fixed(byte *ptrBuffer = &data[0])
{
Cache = (GGSector)Marshal.PtrToStructure(new IntPtr(ptrBuffer), typeof(GGSector));
}
}
SectorCached = SectorNumber;
}
catch
{
SectorCached = -1;
}
}
private void StoreGGSector(long sectorNumber, GGSector sector)
{
var fileName = GetFileName();
using (var sw = File.OpenWrite(fileName))
{
var data = new byte[512];
var fileSector = sectorNumber; // % SectorsPerFile;
sw.Seek(fileSector * 512 + 512, SeekOrigin.Begin);
unsafe
{
fixed(byte *ptrBuffer = &data[0])
{
Marshal.StructureToPtr(sector, new IntPtr(ptrBuffer), true);
}
}
sw.Write(data, 0, data.GetLength(0));
sw.Close();
Repository.TransactionLog.SectorTouch(fileName, (int)fileSector);
}
}