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Usage notes

1. The function performed by the publish/subscribe routing exit is defined by the provider of the exit. The exit, however, must conform to the rules defined in the associated control block MQPXP.

2. No entry point called MQ_PUBSUB_ROUTING_EXIT is actually provided by the publish/subscribe broker. However, a typedef is provided for the name MQ_PUBSUB_ROUTING_EXIT in the C programming language, and this can be used to declare the user-written exit, to ensure that the parameters are correct. The following example illustrates how this can be used:

   #include "cmqc.h"
   #include "cmqxc.h"
    
   MQ_PUBSUB_ROUTING_EXIT MyRoutingExit;
    
   void MQENTRY MyRoutingExit(PMQPXP pExitParms)
   {
     /* C language statements to perform the function of the exit */
   }

 

C invocation

exitname (&ExitParms);

Declare the parameters as follows:

MQPXP  ExitParms;  /* Exit parameter block */

 

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