/// <summary>
/// Initializes a new instance of the <see cref="MemoryWriter"/> class.
/// </summary>
/// <param name="containerInfoPointer">The container information pointer.</param>
/// <exception cref="ArgumentNullException">Pointer</exception>
/// <exception cref="ArgumentException">Length has to be 8 byte aligned!</exception>
/// <exception cref="Exception">
/// There is already a writer connected to the container!
/// or
/// Multiple writer access is not allowed at memory containers!
/// </exception>
public MemoryWriter(IntPtr containerInfoPointer)
{
if (disposedValue)
{
throw new ObjectDisposedException("MemoryWriter");
}
var id = DefaultRNG.UInt32;
ContainerInfoPointer = containerInfoPointer;
containerInfo = GetContainerInfo();
if (containerInfo.Data == IntPtr.Zero)
{
throw new ArgumentNullException(nameof(containerInfoPointer));
}
if (containerInfo.Length % 8 != 0)
{
throw new ArgumentException("Length has to be 8 byte aligned!");
}
if (containerInfo.WriterID != 0)
{
throw new Exception("There is already a writer connected to the container!");
}
containerInfo.WriterID = id;
SetContainerInfo(0);
var checkContainerInfo = GetContainerInfo();
if (!Equals(checkContainerInfo, containerInfo))
{
throw new Exception("Multiple writer access is not allowed at memory containers!");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="MemoryWriter"/> class.
/// </summary>
/// <param name="id">The identifier.</param>
/// <param name="name">Name of the container.</param>
/// <param name="size">Size of the data.</param>
public MemoryWriter(uint id, string name, int size)
{
containerInfo = new MemoryContainerInfo()
{
ID = id,
Data = Marshal.AllocHGlobal(size),
WriterID = DefaultRNG.UInt32,
Position = 0,
Name = name,
Length = size,
};
ContainerInfoPointer = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(MemoryContainerInfo)));
FreeMemory = true;
}
