void Preload()
{
using (FileStream fs = OpenRead()) {
CacheSize = (int)(fs.Length / BlockDBEntry.Size);
EnsureCapacity(CacheSize);
LastFlushedIndex = CacheSize;
// Converting from byte[] to BlockDBEntry[] on the fly
// This is possible because BlockDBEntry is a sequentially packed struct
fixed(BlockDBEntry *pCacheStart = cacheStore)
{
fixed(byte *pBuffer = ioBuffer)
{
byte *pCache = (byte *)pCacheStart;
while (fs.Position < fs.Length)
{
int bytesToRead = Math.Min(BufferSize, (int)(fs.Length - fs.Position));
int bytesInBuffer = 0;
do
{
int bytesRead = fs.Read(ioBuffer, bytesInBuffer, BufferSize - bytesInBuffer);
bytesInBuffer += bytesRead;
} while(bytesInBuffer < bytesToRead);
BufferUtil.MemCpy(pBuffer, pCache, bytesInBuffer);
pCache += bytesInBuffer;
}
}
}
}
}
