from
Jargon File (4.4.4, 14 Aug 2003)
spl
/S.P.L/
[abbrev, from Set Priority Level] The way traditional Unix kernels
implement mutual exclusion by running code at high interrupt levels.
Used in jargon to describe the act of tuning in or tuning out ordinary
communication. Classically, spl levels run from 1 to 7; "Fred's at spl
6 today" would mean that he is very hard to interrupt. "Wait till I
finish this; I'll spl down then." See also {interrupts locked out}.
from
The Free On-line Dictionary of Computing (8 July 2008)
SPL
1. Synchronous Programming Language. A DSP language.
"Introduction to the SPL Compiler", Computalker Consultants,
1986.
2. Space Programming Language. Realtime language used by the
US Air Force for aerospace software. Aka SPL/J6. Similar to
JOVIAL. "Space Programming Language Development", SAMSO TP
70-325, System Development Corp (Sep 1970). (See CLASP).
3. System Programming Language. HP, 1977. An ALGOL-like
language for the HP3000 computer allowing inline assembly
code. MPE, the OS for the HP3000 was written in SPL.
Pub.No.30000-90024, HP. See also {SPLash!}.
4. Systems Programming Language.
PRIME Computer, 80's. A variant of PL/I used on PRIME
computers. PL/I subset G, less I/O plus a few extensions.
SPL User's Reference Guide, Prime. (See PL/P.)
5. Systems Programming Language.
A PL/I subset/extension for the P1000.
D.B. Wortman, U Toronto.
Philips Data Sys, Netherlands, 1971.
Symbolic constants, pointer arithmetic, inline assembly code.
Used to implement compilers, operating systems, and database.
["Experiences With SPL", J. Klunder in Machine Oriented Higher
Level Languages, W. van der Poel, N-H 1974, pp. 385-393].
[Can 4 and 5 be the same?]
6. Student Programming Language.
A translator-interpreter for a dialect of {PL/I}.
7. {Set Priority Level}
[{Jargon File}]
(1995-02-07)