| To create a channel a pair of receiving and sending ports has to be given to tce_chn_int. Then the matching request posted by other process has to be found. To simplify the processes of creating channels, tce_chn_int accepts an array of sending ports and returns an array of established channels: |
| ... |
| tce_chn_init(Channels,TCE_InPort,SendingPorts,n); |
| ... |
| If instead of the receiving or sending port the Null port is given, TCE will create a one-way channel. If both ports are replaced by the Null ports -- a null ("faked") channel is returned. Operations for non-existing channel directions are null functions. For example, a write operation on a channel with only the receive direction enabled will return immediately, reporting 0 items sent. |