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MQCXP – Channel exit parameter

 

The MQCXP structure is passed to each type of exit called by a Message Channel Agent (MCA). See MQ_CHANNEL_EXIT.

The fields described as “input to the exit” in the descriptions that follow are ignored by the MCA when the exit returns control to the MCA. The exit should not expect that any input fields that it changes in the channel exit parameter block will be preserved for its next invocation. Changes made to input/output fields (for example, the ExitUserArea field), are preserved for invocations of that instance of the exit only. Such changes cannot be used to pass data between different exits defined on the same channel, or between the same exit defined on different channels.

• Fields
  

• C declaration
  

• COBOL declaration
  

• RPG declaration (ILE)
  

• RPG declaration (OPM)
  

• System/390 assembler declaration
  

 

Parent topic:

Channel-exit calls and data structures

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