Version 4.2.6 for Mainframes (Update)
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Natural Shared Nucleus under BS2000/OSD

This document contains the rules that apply when you use a Natural shared nucleus, which is possible in Batch mode, under the TP monitors TIAM and/or UTM.

The following topic is covered:

Concerning UTM, see also Several Applications with one Common Natural in the Natural TP Monitor Interfaces documentation.


Rules for Using a Natural Shared Nucleus

With a Natural shared nucleus under BS2000/OSD, the rules given below apply:

  1. The shared Natural nucleus is linked without the corresponding reentrant parts of the batch, TIAM and UTM drivers (these modules must be linked to the front-end part of the corresponding application).

    Example: The name of the shared Natural nucleus is NATSHARE.

    /EXEC $TSOSLNK
    MOD NATSHARE,XREF=YES,MAP=Y,XDSEC=Y,SORT=Y
    LINK-SYMBOLS *KEEP
    INCLUDE NATINV,libname
    .
    .
    INCLUDE NATURAL,libname
    .
    .
    INCLUDE NATLAST,libname
    BIND
    /SETSW ON=1
    LIB NATURAL.USER.MOD,BOTH
    PAR O=Y
    ADDR *OMF
    END
    /SETSW OFF=1
  2. Batch, TIAM and UTM application-specific Natural parameter modules are also linked to the front-end part of the corresponding application. In addition, the shared Natural nucleus can contain a common Natural parameter module, for example, for CSTATIC entries. The name chosen for the linked Natural nucleus is also identical with the name of the global common memory pool into which Natural is loaded. This name is to be used as operand for the following keyword parameters:

    NUCNAME in the macros NAMBS2, NAMTIAM and NATUTM
    NAME in CMPSTART and ADDON (BS2STUB)

    Example:

    NRTSTART NAMTIAM CODE=FRONT,
                        NUCNAME=NATSHARE
                        PARMODE=(31,ABOVE),  
                        .
                        .
    NUTFRONT NATUTM APPLNAM=NATUTM,
                        .
                        .
                        NUCNAME=NATSHARE
                        PARMODE=(31,ABOVE)
  3. The shared Natural nucleus is started by the program CMPSTART.

    Example:

    /EXEC (CMPSTART,NATURAL.MOD)
    NAME=NATSHARE,SIZE=2MB,POSI=ABOVE,ADDR=250,SCOP=GLOBAL  
    PFIX=YES,LIBR=NATURAL.USER.MOD
  4. The link to the shared Natural nucleus is created in the batch, TIAM or UTM applications through the generation of the macro BS2STUB; refer to CMPSTART Program.

    Example:

    NRTSTUB BS2STUB PARMOD=31,PROGMOD=ANY  
                 ADDON NAME=NATSHARE,
                       STAT=GLOBAL
    NUTSTUB BS2STUB PARMOD=31,PROGMOD=ANY
                 ADDON NAME=NATSHARE,
                       STAT=GLOBAL
  5. The front-end part of the applications must contain the reentrant part of the corresponding driver (NAMBS2 CODE=RENT, NAMTIAM CODE=RENT or NURENT).

    Examples:

    Front-end Part of NAMTIAM:

    /EXEC $TSOSLNK                                        /* Front part of NAMTIAM
    PROG NATURAL,LOADPT=X'1000000',XREF=YES
    TRAITS RMODE=ANY,AMODE=31
    INCLUDE NRTSTART,libname          /* Front part of NAMTIAM
    INCLUDE NRTRENT,libname           /* Reentrant part of NAMTIAM
    INCLUDE NRTSTUB,libname           /* BS2STUB
    INCLUDE NRTPARM,libname           /* Natural Parameter Module

    UTM Front-end Part:

    /EXEC $TSOSLNK                    /* UTM Front-end part
    PROG NUTvrs,FILENAM=NATUTM,LOADPT=X'1000000',XREF=YES
    TRAITS RMODE=ANY,AMODE=31
    INCLUDE KDCNUT,libname            /* UTM KDCROOT
    INCLUDE NUTSTART,libname          /* NATUTM
    INCLUDE NUTRENT,libname           /* NURENT
    INCLUDE NUTSTUB,libname           /* BS2STUB
    INCLUDE NUTPARM,libname           /* Natural Parameter Module
    INCLUDE SWPPARM,libname           /* Swap Pool Parameter Module

    where libname is the name of the library and vrs stands for version, release and system maintenance level of the product.

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