public static unsafe int WriteAsPtr <T>(this MemoryStream stream, T value)
{
var size = TypeHelper <T> .Size;
if (size <= 0)
{
throw new InvalidOperationException("This method should only be used for writing fixed-size types to a stream");
}
// NB do not use a buffer pool here but instead use a thread-static buffer
// that will grow to maximum size of a type. Fixed-size types are usually small.
// Take/return is more expensive than the work we do with the pool here.
using (var wrapper = RecyclableMemoryManager.GetBuffer(size))
{
var threadStaticBuffer = wrapper.Buffer;
fixed(byte *ptr = &threadStaticBuffer[0])
{
var buffer = new DirectBuffer(threadStaticBuffer.Length, (IntPtr)ptr);
TypeHelper <T> .Write(value, ref buffer);
}
stream.Write(threadStaticBuffer, 0, size);
}
// NB this is not needed as long as converter.Write guarantees overwriting all Size bytes.
// //Array.Clear(_buffer, 0, size);
return(size);
}
