gistfile1.cs

unsafe
{
	byte** nativePackets = stackalloc byte*[packets.Length];

	// Allocate native byte arrays.
	for (int i = 0; i < packets.Length; i++)
	{
		nativePackets[i] = (byte *)Marshal.AllocHGlobal(packets[i].Length).ToPointer();
		// TODO: try/finally, free memory allocated to date
	}

	try
	{
		Check(generate_packets(filename, nativePackets));

		for (int i = 0; i < packets.Length; i++)
		{
			Marshal.Copy((IntPtr)nativePackets[i], packets[i], 0, packets[i].Length);
		}
	}
	finally
	{
		for (int i = 0; i < packets.Length; i++)
		{
			Marshal.FreeHGlobal((IntPtr)nativePackets[i]);
		}
	}
}