z/OS MVS Programming: Workload Management Services
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Enclave Services and the ARM API

z/OS MVS Programming: Workload Management Services
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Enclave Services and the ARM API

For a work manager that is an EWLM participant, the enclave services internally invoke the ARM services. A work manager becomes an EWLM participant when it connects to WLM through the IWM4CON service with EWLM=YES. Table 14 shows the ARM services that are invoked by the enclave services.

Table 14. WLM Enclave Services and ARM APIs
Enclave ServiceDescriptionARM ServiceParameters
IWM4CONConnect to WLM, identify the work manager as an EWLM participantarm_register_applicationapp_name = SUBSYS
arm_register_transaction
arm_start_application
app_group_name = GROUPNM
app_instance_name = SUBSYSNM
IWM4ECRE with ESTRT(IMPLIED)Create an enclavearm_start_transaction
IWMESTRTStart a work requestarm_start_transaction
IWMESTOPStop a work requestarm_stop_transaction
IWMEBLKIndicate that processing of a work request is blockedarm_block_transaction
IWMEUBLKIndicate that processing of a work request is no longer blockedarm_unblock_transaction
IWMEDELEDelete an enclavearm_stop_transaction (if applicable)
IWM4DISDisconnect from WLM
arm_destroy_application

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