C programming in the Guardian environment

Prerequisites

• Concepts and Facilities
• ANSI/ISO C Programming experience
• Recommended: Experience with the Inspect symbolic debugger
• TAL programming experience

Audience

• Programmers
• Programmer analysts
• System analysts
• System programmers

Ways to save

Benefits to you

• Building TNC C and native C programs
• Native mode considerations
• The C run-time environment
• Compiler operation and diagnostics
• Debugging C programs with Inspect
• Interfacing to Guardian system procedures
• Mixed language programming
• Embedded SQL, DML operations, cursor concepts, and locking strategies

Next Steps

Guardian API Programming U4152S

Course outline

• Compiling and linking TNS C programs
• Basic operation of the TNS C compiler
• Compiler syntax and the analysis of a compiler listing
• Binder commands needed to combine multiple object files to build a single executable program
• Lab exercise: compile a complete C program
• Lab exercise: separate compilation and binding
• Native mode considerations
• Native mode
• Benefits and constraints of native mode and the native mode development tolls
• Process attributes and organization
• Native mode compilation
• Various native mode migration issues particular to C programming
• Using the TNS/R native compiler (NMC)
• Usage of the ndl utility for linking separately compiled modules
• Lab exercise: use the NMC compiler to build runnable programs from separately compiled units
• Run-time environment
• HP NonStop server run-time environment for C programs
• Obtaining and processing environment and startup protocol messages
• Essentials of memory models available for HP NonStop C and show the four basic areas of heap, RTL, global and stack
• 32 bit pointers and access to system procedures that require 16 bits
• Large and wide memory models
• Lab exercise: gain hands-on experience in fetching process startup information
• Tandem C compiler operation and diagnostics
• Subset of the available compiler pragmas for Tandem C
• Compiler pragmas for the native C compiler
• Compile-time and run-time diagnostic facilities
• Demonstrating, with examples, various aspects of compiler operations
• Debugging C programs
• Basic framework of inspect commands which can be used for debugging HP NonStop server C programs
• Information regarding inspect commands specifically helpful for the HP NonStop server C environment
• Demonstrating an inspect session
• Lab exercise: do an inspect session on an C program
• Interfacing to Guardian procedures
• Specifics of interfacing to Guardian operating system procedures from a C program
• Interface declarations for non-C functions
• Usage of the guardian procedure calls reference manual and special/problem Guardian procedures
• Lab exercise: make calls to guardian procedures needed for various terminal display options
• Mixed-language programming
• Mixed language programming as it relates to HP NonStop C
• Interface declarations, common run-time environment (CRE), specific alignment rules, data storage requirements, and global data sharing
• Lab exercise: gain hands-on experience with interface between HP NonStop C and other languages such as TAL