MQCXP - Channel exit parameter

The MQCXP structure is passed to each type of exit called by a Message Channel Agent (MCA), client-connection channel, or server-connection channel.

See MQ_CHANNEL_EXIT.

The fields described as "input to the exit" in the descriptions that follow are ignored by the channel when the exit returns control to the channel. Any input fields that the exit changes in the channel exit parameter block will not 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
  This topic lists all the fields in the MQCXP structure and describes each field.
• C declaration
  This declaration is the C declaration for the MQCXP structure.
• COBOL declaration
  This declaration is the COBOL declaration for the MQCXP structure.
• RPG declaration (ILE)
  This declaration is the RPG declaration for the MQCXP structure.
• System/390 assembler declaration
  This declaration is the System/390 assembler declaration for the MQCXP structure.

Parent topic: Channel-exit calls and data structures

Related reference

• Fields
• C declaration
• COBOL declaration
• RPG declaration (ILE)
• System/390 assembler declaration