internal virtual void InitBeforeConvert(SharedMemoryBuffer buffer)
{
if (InitValue != null)
{
InitValue(buffer);
InitValue = null;
}
}
internal virtual void InitNew()
{
if (Size > long.MaxValue)
{
throw new ArgumentOutOfRangeException("cannot allocate memory larger than long.MaxValue");
}
Buffer = new SharedMemoryBuffer((IntPtr)(long)Size);
Buffer.Initialize(Size);
}
public SharedMemoryBuffer CreateView(long position, ulong numBytes)
{
if (position < 0 || numBytes < 0)
{
throw new ArgumentOutOfRangeException("position or length cannot be negtive value");
}
long BufferStart = Handle.ToInt64();
long BufferEnd = BufferStart + (long)ByteLength;
long start = position + BufferStart;
long end = start + (long)numBytes;//potencial overflow, let dotnet handle this :)
if (start > BufferEnd || end > BufferEnd)
{
throw new ArgumentException("cannot project data accessor outside data area");
}
SharedMemoryBuffer result = new SharedMemoryBuffer((IntPtr)start, numBytes, false);
return(result);
}
protected virtual void InitWindow(SharedMemoryBuffer source, long position)
{
Buffer = source.CreateView(position, Size);
}
internal virtual void InitWindow(IntPtr handle, bool ownsHandle)
{
Buffer = new SharedMemoryBuffer(handle, Size, ownsHandle);
}
