Using the SCHEDIRB macro to schedule an IRB

You can also use the SCHEDIRB macro only to schedule an initialized IRB for an asynchronous exit. In this case, use the CIRB macro to initialize the IRB and SCHEDIRB to schedule the IRB initialized by the CIRB macro. This technique allows you to take advantage of the capacity for reusing IRBs that the CIRB macro allows. On the SCHEDIRB macro, specify the IQEPTR parameter, using the address of the IQE for the IRB initialized by the CIRB macro. When you use SCHEDIRB with the CIRB macro, you cannot use the TCBPTR or RBPTR parameters that SCHEDIRB provides to control when your exit runs.