SPL
       Set Priority Level (Unix)

	

	SPL
       Simple Programming Language

	

	SPL
       Sound Pressure Level

	

	SPL
       Sun Public License (Sun)

	

	SPL
       Systems Programming Language (HP, MPE, ALGOL, HP 3000)

	

	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.

	

	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)