JES2 load modules

JES2 is comprised of three main load modules and a collection of subsystem support modules. In Table 1, the three mainload modules appear first, followed by the subsystem support modules.

Table 1. Subsystem Support Modules
Module	Purpose	Storage Location
HASCARMS	Automatic restart management SSI support.	common
HASCARSO	Support for automatic restart management services.	common
HASCDAU	Supports the allocation of multiple spin $IOTs to support multiple output characteristics.	common
HASCDSAL	Supports the allocation and deallocation of subsystem data sets.	common
HASCDSOC	Supports opening and closing subsystem data sets.	common
HASCDSS	Supports any data spaces JES2 creates.	common
HASCENF	Event Notification Facility (ENF) LISTEN Exit	common
HASCGGKY	Supports generic grouping keys.	common
HASCGGST	Supports generic grouping strings.	common
HASCHAM	Contains the JES2 access method support.	common
HASCJBST	Supports job selection and job end processing.	common
HASCJBTR	Supports end-of-memory and end-of-task processing.	common
HASCLINK	Supports linkage between JES2 modules.	common
HASCOFST	Ensures the addressability of installation- or JES2-modified code.	common
HASCPHAM	Contains the JES2 access method support.	common
HASCPOOL	Supports the JES2 cell pool services.	common
HASCRQUE	Request queue services.	common
HASCSAPI	Supports SYSOUT API (SAPI) requests.	common
HASCSIJD	Provides SSI support module.	common
HASCSIJI	Supports checkpoint versioning.	common
HASCSIJP	Supports JES properties subsystem interface (SSI) functions.	common
HASCSIRQ	Supports miscellaneous subsystem interface (SSI) functions such as write-to-operator, commands, and process SYSOUT.	common
HASCSJFA	Updates the $SJB with the output limits and the account number from the SWB.	common
HASCSJFS	Supplies SJF-related services.	common
HASCSRAX	JES2 AUX address space services.	common
HASCSRDS	Provides subsystem data set services.	common
HASCSRIC	Provides SSI control services.	common
HASCSRJB	Provides job-related services.	common
HASCTP	Provides APPC/MVS transaction program support.	common
HASCUBSR	Supports unwritten buffer processing.	common
HASCXJCT	Support for extensions to JCT.	common
HASCBLDM	Message building support and templates.	common
HASCINJR	Support for internal readers.	common
HASCNJAS	NETSRV address space creation support.	common
HASCNJE	NJE service routines.	common
HASCNJEX	NETSRV interface to IAZ services.	common
HASCNJGP	NETSRV address space general purpose subtasks.	common
HASCNJJR	NJE/TCP job receiver support.	common
HASCNJJT	NJE/TCP job transmitter support.	common
HASCNJRC	NETSRV recovery support.	common
HASCNJRQ	NETSRV interfaces to JES2 address space.	common
HASCNJSR	NJE/TCP SYSOUT receiver support.	common
HASCNJST	NJE/TCP SYSOUT transmitter support.	common
HASCSCAN	JES2 $SCAN support services.	common
HASCSRIP	Input processing service routines.	common
HASJES20	The main task module.	JES2 private
HASJ2MON	JES2 health monitor services.	JES2 monitor, JES2 private
HASPFSSM	The functional subsystem service module.	FSS private
HASPINIT	The initialization modules.	JES2 private

HASJES20 resides in the JES2 address space, HASPINIT resides in the JES2 address space during initialization processing, and HASPFSSM resides in the functional subsystem address space. HASJES20 is a split load module. Part of the module resides below the 16 megabytes in JES2 private storage, including the main entry point, and the remainder resides above the 16 megabytes in JES2 private storage.

The JES2 subsystem support modules reside in either the common service area (CSA, if the modules are found in the STEPLIB or LINKLST data set) or the pageable link pack area (LPA, if the modules are not found in the STEPLIB or LINKLST data set).