TACL Reference Manual

Glossary
HP NonStop TACL Reference Manual—429513-018
Glossary-2
command-interpreter monitor ($CMON).
command-interpreter monitor ($CMON). A server process that monitors requests made
to the TACL process and affects the way TACL responds.
completion code. A value used to return information about a process to its ancestor
process when the process is deleted. This value is returned in the process deletion
message, system message -101.
condition code. A status returned by some file-system procedure calls to indicate whether
the call was successful. A condition-code-greater-than (CCG) indicates a warning, a
condition-code-less-than (CCL) indicates an error, and a condition-code-equal (=)
indicates successful execution.
conversational mode. A mode of communication between a terminal and its I/O process in
which each byte is transferred from the terminal to the processor I/O buffer as it is
typed. Each file-transfer operation finishes when a line-termination character is typed
at the terminal. Contrast with page mode.
creator. The process that initiates execution of another process. Compare with mom and
ancestor.
creator access ID (CAID). A process attribute that identifies, by user ID, the user who
initiated the process creation. Contrast with process access ID.
data segment. A type of absolute segment whose logical pages contain information to be
processed by the instructions in the related code segment.
deadlock. A situation in which two processes or two transactions cannot continue because
they are each waiting for the other to release a lock.
default process. The process whose name is returned by the #PROCESS function. It is
the process most recently created by a RUN or RUND command, an implied RUN, or a
#NEWPROCESS built-in function, or for which TACL was most recently paused by a
PAUSE proc-spec command or a #PAUSE proc-spec built-in function; if that process is
no longer running, there is no default process.
DEFINE. A named set of attributes and values.
DEFINE name. An identifier preceded by an equal sign that can be used in place of an
actual name to identify a DEFINE in a procedure call. See DEFINE.
Delta. The low-level character editor provided by TACL.
destination control table (DCT). A collection of operating system data structures that
serves as a directory of named processes and logical devices.
device. A peripheral hardware attachment used for input and output; for example, a printer
or a disk.