A list whose car is the process ID of the sending task and whose cdr is a character string containing the message which was sent, or -1 on error.
This function performs a QNX 4 Receive. Once a message has been received the sending task is blocked until the recipient issues a reply message using the qnx_reply function.
This function should only be used to receive a specific message from a specific task. There is no need to make your own event loop in Gamma since there is a choice of next_event, next_event_nb, and PtMainloop.
Possible errno values are:
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