/// <summary>
/// Read from the queue into the consumer callable.
///
/// <paramref name="consumer"/> is expected to return the number of bytes
/// consumed, sans the header.
/// </summary>
/// <param name="consumer"></param>
public int Read(Func <string, InteropMessageHeader, IntPtr, int> consumer)
{
return(messageConsumer.Read((ptr) =>
{
int bytesRead = 0;
// Read target name (varying length string)
int targetSize = FastStructure.PtrToStructure <int>(ptr + bytesRead);
bytesRead += FastStructure.SizeOf <int>();
string targetName = "";
if (targetSize > 0)
{
byte[] target = new byte[targetSize];
FastStructure.ReadBytes(target, ptr + bytesRead, 0, targetSize);
targetName = Encoding.UTF8.GetString(target);
bytesRead += targetSize;
}
// Read message header
var headerSize = FastStructure.SizeOf <InteropMessageHeader>();
var header = FastStructure.PtrToStructure <InteropMessageHeader>(ptr + bytesRead);
bytesRead += headerSize;
// Call consumer to handle the rest of the payload
bytesRead += consumer(targetName, header, ptr + bytesRead);
// InteropLogger.Debug($"Consume {bytesRead} bytes - {header.type} for `{targetName}`");
return bytesRead;
}, 0));
}
