Object Code Accelerator Manual

Glossary
Object Code Accelerator Manual—528144-003
Glossary-6
duplicate key
duplicate key. A sequence of characters that makes up the same value in a key field in
more than one record in the same file.
EDIT file. In the Guardian file system, an unstructured file with file code 101. An EDIT file
can be processed by either the EDIT or PS Text Edit (TEDIT) editor. An EDIT file
typically contains source program or script code, documentation, or program output.
Open System Services (OSS) functions can open an EDIT file only for reading.
elapsed time. Time as measured by the processor clock, independent of the state of any
process.
eld utility. A utility that collects, links, and modifies code and data blocks from one or more
position-independent code (PIC) object files to produce a target TNS/E native object
file. See also ld utility and nld utility.
emulate. To imitate the instruction set and address spaces of a different hardware system
by means of software. Emulator software is compatible with and runs software built for
the emulated system. For example, a TNS/R or TNS/E system emulates the behavior
of a TNS system when executing interpreted or accelerated TNS object code.
enoft utility. A utility that reads and displays information from TNS/E native object files.
See also noft utility.
EPTRACE. A performance investigation tool for Open System Services (OSS) and
Guardian environments running H-series RVUs. It is designed to count, trace, locate,
and provide a log of millicode-corrected misalignments in TNS stumble events.
Enscribe. A database record management system.
entry-sequenced file. A file in which each new record is stored at the end of the file in
chronological sequence and whose primary key is a system-generated record address.
Contrast with key-sequenced file and relative file.
exact point. See memory-exact point
and register-exact point.
executable. See object code file
.
execution mode. The emulated or real instruction set environment in which object code
runs. A TNS system has only one execution mode: TNS mode using TNS compilers
and 16-bit TNS instructions. A TNS/R system has three execution modes: TNS/R
native mode using MIPS native compilers and MIPS instructions, emulated TNS
execution in TNS interpreted mode, and emulated TNS execution in TNS accelerated
mode. A TNS/E system also has three execution modes: TNS/E native mode using
TNS/E native compilers and Intel® Itanium® instructions, emulated TNS execution in
TNS interpreted mode, and emulated TNS execution in TNS accelerated mode.
exclusion mode. The attribute of a lock that determines whether any process except the
lock holder can access the locked data.