Starts a non-blocking receive with a buffer.
a0tError | a0IReceiveBuffer( | | | |
| | a0tPort | *port, | |
| | int | source, | |
| | int | tag, | |
| | a0tRequest | *request, | |
| | a0tBuffer | *buffer );
| |
| Name | rd/wr | Description |
| port | read | Port to listen to (on caller's node). |
| source | read | Source node to listen to. |
| tag | read | tag to use. |
| request | write | Request descriptor to hold the status. |
| buffer | write | Receive buffer. |
This function starts a non-blocking receive on a given port port, from a given source node source (or A0AnySource if any node will do), with a given tag tag. A request is posted to receive a buffer in buffer.
The buffer cannot be used before the completion of the request.
The full contents of a buffer is replaced every time a receive is performed. There is no need to call a0ClearBuffer() prior to receive it.
If a NULL is passed as request, no structures are kept after the request completion, so it cannot be tested or waited later. It is supposed that the program has other means to find out if the request has ended, as for example, a subsequent request.
On return of this function, the variable pointed by request contains an opaque request that can be used later to test or wait the completion of the receive operation or get information about it.
| Error Code | Description |
A0Err...| Some error occurred. | |
A0ErrOk| Successful completion. | |
a0ReceiveBuffer() a0Receive() a0IReceive() a0ISendBuffer() a0Pack() a0Unpack()