Getting a message

 

The CAM first attempts to get a message from the inquiry queue using the MQGET call with the MQGMO_SET_SIGNAL option. If a message is available immediately, the message is processed; if no message is available, a signal is set.

The CAM then attempts to get a message from the reply queue, again using the MQGET call with the same option. If a message is available immediately, the message is processed; otherwise a signal is set.

When both signals are set, the program waits until one of the signals is posted. If a signal is posted to indicate that a message is available, the message is retrieved and processed. If the signal expires or the queue manager is terminating, the program terminates.

 

Parent topic:

Credit application manager (CSQ4CVB2)

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