TNS/E Native Application Conversion Guide

Introduction to Native Mode
TNS/E Native Application Conversion Guide—529659-003
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Underlying Native Mode Structure for All Programs
Underlying Native Mode Structure for All Programs
As shown in Figure 1-1, in H-series RVUs, HP has converted nearly all system code,
system library routines, and other products to run in native mode. (Shaded regions in
the figure indicate code that runs in native mode.) Therefore, interpreted and
accelerated object code benefit from the increased performance of the native
architecture without a single line of source change or recompilation.
While native mode offers many benefits, you are not required to convert your programs
to native mode. H-series RVUs continue to support the TNS compilers and tools. You
can continue to create and run TNS interpreted and accelerated object code and gain
the performance benefits provided by HP software that has been converted to native
mode.
Figure 1-1. Native Mode Benefits All Programs
NonStop Operating System
Transaction
Services
Networking
Services
Database
Services
Guardian API Open System Services API
TNS Interpreted
Object Code
VST001.vsd
TNS Accelerated
Object Code
Native
Object Code