ATM Configuration and Management Manual

Glossary
ATM Configuration and Management Manual—522307-003
Glossary-11
LED
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The loader resolves a symbol that is unresolved by any loadfile on the linker
searchList.
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The loader binds a symbol in a DLL to the first definition it finds on the program’s
loadList, and this is not the first definition that was encountered on the linker
searchList.
For localized loadfiles, the linker and loader searchLists are the same, so late binding
does not occur.
LED. See light-emitting diode (LED).
light-emitting diode (LED). A semiconductor device that emits light from its surface.
Indicator lights are composed of LEDs. See also indicator lights.
libList. The list of libraries to be loaded along with a loadfile. When linking the loadfile, the
linker constructs the libList from the names of libraries specified in the linker’s
command stream; it stores the libList within the loadfile.
library. A generic term for a collection of routines useful in many programs. An object code
library can take the form of a linkfile to be physically included into client programs, it
can be an OSS archive file containing several linkable modules, it can be a loadfile, or
it can be a system-managed collection of preloaded routines. Source-code libraries fall
outside the scope of this glossary. See also dynamic-link library (DLL) and shared run-
time library (SRL).
library client. A program or another library that uses routines or variables from that library.
library file. See library.
library import characterization (LIC). A list of the export digests and relocation offsets of
all the libraries used to resolve symbols in a loadfile. It allows the loader and operating
system to determine when a file is being loaded in an environment equivalent to that
found by the linker or to a previous load (see fastLoad). A LIC is generated and stored
in the loadfile by the linker when a file is preset; it can be used in a subsequent load
step to determine whether the loadfile’s existing bindings can be reused. The operating
system can also retain the bindings as modified when a loadfile is loaded (see cached
bindings) and associate a LIC with those cached bindings, so that they can be reused
when the same file is again loaded in an equivalent environment.
LIC. See library import characterization (LIC).
linker. (1) The process or server that invokes the message system to deliver a message to
some other process or server. (2) A programming utility, which combines one or more
compilation units’ linkfiles to create an executable loadfile for a native program or
library.
linkfile. (1) For native C/C++ compilers in the Guardian environment, a command file for
input to the nld or ld utility. (2) A file containing object code that is not yet ready to
load and execute. Linkfiles are combined by means of a linker or binder to make an