/// <summary>
/// Resizes this array.
/// </summary>
/// <param name="size"></param>
public void Resize(long size)
{
_length = size;
var arrayCount = (int)System.Math.Ceiling((double)size / _fileElementSize);
_files = new List <IMemoryMappedFile>(arrayCount);
if (arrayCount < _files.Count)
{ // decrease files/accessors.
for (int arrayIdx = (int)arrayCount; arrayIdx < _files.Count; arrayIdx++)
{
_accessors[arrayIdx].Dispose();
_accessors[arrayIdx] = null;
_files[arrayIdx].Dispose();
_files[arrayIdx] = null;
}
_files.RemoveRange((int)arrayCount, (int)(_files.Count - arrayCount));
}
else
{ // increase files/accessors.
for (int arrayIdx = _files.Count; arrayIdx < arrayCount; arrayIdx++)
{
var file = _factory.New(_fileSizeBytes);
_files.Add(file);
_accessors.Add(file.CreateViewAccessor(0, _fileSizeBytes));
}
}
}
/// <summary>
/// Creates a memory mapped huge array.
/// </summary>
/// <param name="factory">The factory to create the memory mapped files.</param>
/// <param name="size">The size of the array.</param>
/// <param name="arraySize">The size of an indivdual array block.</param>
public MemoryMappedHugeArray(MemoryMappedFileFactory factory, long size, long arraySize)
{
_factory = factory;
_length = size;
_fileElementSize = arraySize;
_elementSize = NativeMemoryMappedFileFactory.GetSize(typeof(T));
_fileSizeBytes = arraySize * _elementSize;
var arrayCount = (int)System.Math.Ceiling((double)size / _fileElementSize);
_files = new List <IMemoryMappedFile>(arrayCount);
_accessors = new List <IMemoryMappedViewAccessor>(arrayCount);
for (int arrayIdx = 0; arrayIdx < arrayCount; arrayIdx++)
{
var file = _factory.New(_fileSizeBytes);
_files.Add(file);
_accessors.Add(file.CreateViewAccessor(0, _fileSizeBytes));
}
}
