internal Exchange(XPU xpu, MemoryFragment f, bool isCopy = false)
{
XPU = xpu;
int tid = 0;
int pos = 0;
pos = f.Read(ref tid, pos);
IsValid = tid == EXCHANGE_TYPE_ID;
if (IsValid)
{
Fragment = f;
pos = f.Read(ref ID, pos);
pos = f.Read(ref RefID, pos);
pos = f.Read(ref Flags, pos);
pos = f.Read(ref Created, pos);
pos = f.Read(ref ErrorCode, pos);
pos = f.Read(ref ResIDLen, pos);
ResID = Encoding.UTF8.GetString(f.Span().Slice(pos, ResIDLen));
DataOffset = pos + ResIDLen;
state = isCopy ? (int)XState.Created : (int)XState.Received;
}
}
internal Exchange(
XPU xpu,
int refID,
int xflags,
int errorCode,
string resID,
Span <byte> data,
IMemoryHighway hw)
{
XPU = xpu;
var resBytes = Encoding.UTF8.GetBytes(resID);
ResIDLen = (ushort)resBytes.Length;
var fl = data.Length + ResIDLen + HEADER_LEN;
Fragment = hw.AllocFragment(fl);
if (Fragment == null)
{
throw new ArgumentNullException("Fragment");
}
var pos = 0;
this.ID = xpu.nextExchangeID();
this.RefID = refID;
this.Flags = xflags;
this.Created = DateTime.Now.Ticks;
this.ErrorCode = errorCode;
this.state = (int)XState.Created;
this.ResID = resID;
pos = Fragment.Write(EXCHANGE_TYPE_ID, pos);
pos = Fragment.Write(ID, pos);
pos = Fragment.Write(refID, pos);
pos = Fragment.Write((int)xflags, pos);
pos = Fragment.Write(Created, pos);
pos = Fragment.Write(errorCode, pos);
pos = Fragment.Write(ResIDLen, pos);
if (resBytes.Length > 0)
{
pos = Fragment.Write(resBytes, pos);
}
DataOffset = pos;
if (data.Length > 0)
{
Fragment.Write(data, pos);
}
}
