/// <summary>
/// Gets the create accessor function for the given type.
/// </summary>
public static CreateAccessorFunc <T> GetCreateAccessorFuncFor <T>()
{
var type = typeof(T);
lock (_accessorDelegates)
{
if (_accessorDelegates == null ||
_accessorDelegates.Count == 0)
{ // register accessors.
MemoryMap.RegisterCreateAccessorFuncs();
}
if (!_accessorDelegates.TryGetValue(type, out var value))
{
throw new NotSupportedException(
$"Type {type} not supported, try explicitly registering an accessor creating function.");
}
return((CreateAccessorFunc <T>)value);
}
}
protected int _elementSize; // The size of a single element.
/// <summary>
/// Creates a new mapped accessor.
/// </summary>
public MappedAccessor(MemoryMap file, Stream stream, int elementSize)
{
if (file == null)
{
throw new ArgumentNullException("file");
}
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (!stream.CanSeek)
{
throw new ArgumentException("Stream to create a memory mapped file needs to be seekable.");
}
if (elementSize == 0 || elementSize < -1)
{
throw new ArgumentOutOfRangeException("elementSize need to be -1 or in the range of ]0-n].");
}
_file = file;
_stream = stream;
_elementSize = elementSize;
}
/// <summary>
/// Diposes of all native resources associated with this object.
/// </summary>
public virtual void Dispose()
{
_file.Disposed <T>(this);
_file = null;
}