internal SmallPartEnumerator(string path, IBytesGetter <T> bytesGetter, int buffer = 256)
{
this.elementsInBuffer = buffer;
this.stream = new BufferedStream(new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.None));
this.bytesGetter = bytesGetter;
bytesRequired = bytesGetter != null ? bytesGetter.BytesRequired : Marshal.SizeOf(typeof(T));
this.buffer = new byte[bytesRequired * elementsInBuffer];
if (bytesGetter == null)
{
queue = new T[elementsInBuffer];
}
}
public ExternalMemoryList(string pathToDirectory, int maxElementsInMemoryCount, IBytesGetter <T> bytesGetter = null,
bool sortOnSave = false)
{
pathToDirectory += "/";
Directory.CreateDirectory(pathToDirectory);
this.PathToDirectory = pathToDirectory;
this.MaxElementsInMemoryCount = maxElementsInMemoryCount;
this.BytesGetter = bytesGetter;
current = new T[maxElementsInMemoryCount];
bytesRequired = BytesGetter != null ? BytesGetter.BytesRequired : Marshal.SizeOf(typeof(T));
bytes = new byte[maxElementsInMemoryCount * bytesRequired];
SortOnSave = sortOnSave;
}