Open System Services (OSS) for guardian developers

Prerequisites

• Concepts and facilities
• At least six months of HP NonStop server experience

Audience

• Application developers
• System programmers

Ways to save

Benefits to you

• Introduction to OSS
• OSS file system basics
• OSS architecture, commands, and utilities
• OSS development environment
• OSS API usage and sockets basics

Next Steps

Web foundations for HP NonStop servers

Course outline

Introduction to OSS

• History of UNIX
• The POSIX standard
• HP NonStop servers that use OSS
• Guardian and OSS interface differences

OSS file system basics

• Accessing OSS
• The OSS file system
• Permissions
• File types
• Typical directories

basic commands and utilities

• Navigational and display commands
• TACL/OSS command equivalents
• Printing from OSS
• Process management
• Lab exercise 3.1: Basic commands and utilities

advanced commands and utilities

• More advanced commands
• Redirection and piping
• Profile files
• Environment variables
• Command line editing
• Miscellaneous commands such as grep and awk
• Lab exercise: Advanced commands and utilities

OSS file editing

• The vi editor
• Use of TACL commands from the OSS environment
• Use of OSS commands from TACL
• Copying files between OSS and guardian environments
• Text file conversion between OSS and guardian environments
• Lab exercise: File editing

command scripting

• Command files
• Variable usage
• Aliases
• Control structures
• Functions
• Argument processing
• Tracing
• Use of gtacl
• Lab exercise: Command scripting

OSS development

• Tools and utilities such as c89, nmcobol, tar, pax, nld, and noft
• Compiling and linking
• The Tandem development suite
• Debugging with Inspect
• Debugging with visual inspect
• Lab exercise: Development and visual inspect

porting issues

• General porting considerations
• Porting design issues
• Interprocess communications features
• Pipes and FIFOs
• Performance considerations
• $RECEIVE handling
• Lab exercises: Porting

OSS subsystem architecture

• Subsystem processes
• Subsystem files
• OSS subsystem startup
• OSS configuration overview
• The gname and pname utilities
• DEFINE usage
• Lab exercise (1 hour): Architecture

Application programming interface (API) usage

• Accessing standard POSIX system calls
• Accessing HP NonStop server specific extensions to the system calls
• Accessing Guardian objects from POSIX system calls
• Differentiating between the different forms of process creation calls
• Accessing Guardian procedures from within an OSS program
• Lab exercise (45 minutes): API usage

OSS sockets basics

• What is a socket?
• Client/server support
• Protocols and addressing
• Sockets function library
• Library headers and data structures
• OSS and Guardian sockets differences
• Lab Exercise (45 minutes): OSS Sockets