M512 Outline

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Using LE Services in z/OS - Topical Outline

Day One

Course Survey

Introduction to Language Environment
   What Is Language Environment?
   LE Services
   Invoking LE Services
   Tokens
   LE Program Management
   z/OS UNIX and POSIX
   LE Program Management, Second Pass
   LE and 64-bit Processes
   Introduction to XPLINK

LE Message Services and Running LE Programs
   Language Environment Message Handling Services
   The CEEMOUT Service
   Compiling and Linking LE Programs
   Running LE Programs
   Computer Exercise: A First Encounter With Language Environment

More on Message Handling Services
   Message ID's
   Loadable Text Files
   Message Tag Files
   The CEEBLDTX Exec
   Creating a Message Module Table
   The CEEMSG service
   Computer Exercise: Using Message Files

Message Inserts and Run-Time Parameters
   Message inserts
   The CEECMI service
   The CEEMGET service
   Run-Time parameters
   Sources for run-time parameters
   The CEE3PRM service
    The CEE3PR2 service
   Computer Exercise: Message Inserts and Run-Time Parameters

Day Two

Tokens, Return Codes, and Termination
   Token composition and decomposition: CEENCOD and CEEDCOD services
   Data types for LE services parameters
   Symbolic feedback codes
   Return values from LE services
   Enclave termination
   Determining enclave return codes
   The CEE3GRC and CEE3SRC services

User Area Fields
The CEE3USR service

Determining the Platform and Environment Information
The CEEGPID and CEE3INF services
Working with environment variables: the CEEENV service

Debugging Services
   The CEE3DMP service
   CEE3DMP - Sample outputs
   The CEE3ABD service
   The CEETEST service
   Computer Exercise: Creating an LE Dump

Storage Management Services
   Library and user storage, stack and heap storage
   Run-time parameters that influence storage management
   Library storage (stack and heap); user storage (stack and heap)
   CEEGTST, CEEFRST, CEECZST, CEECRHP, CEEDSHP, CEE3RPH
   Computer Exercise: Using Heap Storage

Condition Handling
   Part 1 - Concepts
        Condition Handling Concepts
   Part 2 - Using Condition Handlers
       Setting Up for Using Your Own Condition Handlers
       Register Condition Handlers: CEEHDLR
       Signaling Conditions: CEESGL
   Part 3 - Writing Your Own Condition Handlers
       Condition Handler Design
       Possible actions in a condition handler
       Handle cursor and Resume cursor
       CEEMRCR, CEE3SRP, CEEMRCE, CEEGQDT, CEE3GRN, CEE3GRO, CEEITOK
       Information Available To a Condition Handler
       Condition Handling Tips
   Computer Exercise: Condition Handlers

Day Three

ILC - Inter Language Communication
   Introduction
   Data Types
   Methods of Passing and Receiving Data
   Language pair considerations
   Multiple Language Applications
   Computer Exercise: Calling Subroutines in Multiple Languages

Assembler Considerations
   Macros CEEENTRY, CEETERM, CEECAA, CEEDSA, CEEPPA
   Using System Services
   The CEELOAD macro and service
   Macros CEEFETCH, CEERELES
   AMODE Considerations
Preinitialization Services (CEEPIPI) - Optional
Library Routine Retention (LRR) - Optional

Date and Time Services
   Date and time formats
   LE date and time services: CEEDATE, CEEDATM, CEEDAYS, CEEDYWK,
    CEEGMT, CEEGMTO, CEEISEC, CEELOCT, CEEQCEN, CEESCEN,
    CEESECI, CEESECS, CEECBLDY, CEE3DLY, CEEDLYM
   The Century Window
   Date and time conflicts: COBOL, PL/I, C/370
   Computer Exercise: Date and Time Services

LE International Support
Services, Supported countries, languages

LE Locale Services
Locale Concepts, Services

LE Math and Bit Manipulation Routines

LE: Miscellaneous Topics
CICS, IMS
Nested enclaves

XPLINK (C, C++ Users Only)
Traditional CALL linkages
XPLINK - Extra Performance Link

Sources of Information

Course Objectives
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