Groups > comp.lang.java.programmer > #31532

Re: Return of the Applets?

From	Martin Gregorie <martin@address-in-sig.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: Return of the Applets?
Date	2015-04-07 23:00 +0000
Organization	A noiseless patient Spider
Message-ID	<mg1ni5$laf$1@dont-email.me> (permalink)
References	(11 earlier) <mg0qhd$shj$1@dont-email.me> <-cednXIEsfRim7nInZ2dnUVZ8h2dnZ2d@giganews.com> <mg13ej$4n7$2@dont-email.me> <mg1em2$7s8$2@dont-email.me> <mg1h4v$uj9$1@dont-email.me>

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On Tue, 07 Apr 2015 17:11:48 -0400, Jerry Stuckle wrote:

> Internally, IBM had a language called PL/S which was a subset of PL/1
> with an embedded assembler.  The compiler would convert the PL/S
> statements to assembler statements, then assemble the program.  It sped
> up development quite a bit, while still keeping the efficiency of
> assembler where needed (even back then mainframe OS's had to be coded in
> assembler for efficiency).
>
Interesting.

In the late 70s/early 80s the same thing showed up on 8/16 bit chips. I 
did a fair amount of programming in both assembler and PL/9 (a clone of 
the lowish-level PL/M for Intel chips but for the MC6809). A nice feature 
of PL/9 was that it could generate out assembler source rather than 
binary if you asked nicely and it was equally easy to drop chunks of 
assembler back into a PL/9 . Consequently, it was dead easy to optimise 
code that way. PL/9 was a good code generator (it was almost impossible 
to improve in the code it generated for each statement) but a poor code 
optimiser (it made no attempt to rationalise adjacent code where one 
statement ended and the next began), so it was interesting that some 
chunks of code could be improved a lot by recoding in assembler, but most 
of the compiler's output could be improved only marginally. 

I've written a bit of PL/1 in the past - all on AS/400 or IBM System/88 
(rebadged Stratus fault-tolerant boxes) though, never on a mainframe.

So, I'm curious: did PL/S show the same characteristic I discovered in 
PL/9?  

-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

Thread

Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-05 09:46 -0400
  Re: Return of the Applets? Jeff Higgins <jeff@invalid.invalid> - 2015-04-05 13:12 -0400
  Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-05 15:14 -0400
    Re: Return of the Applets? Arne Vajhøj <arne@vajhoej.dk> - 2015-04-05 16:41 -0400
      Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-05 16:54 -0400
        Re: Return of the Applets? Arne Vajhøj <arne@vajhoej.dk> - 2015-04-05 17:08 -0400
          Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-05 17:17 -0400
            Re: Return of the Applets? Arne Vajhøj <arne@vajhoej.dk> - 2015-04-05 17:30 -0400
              Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-05 17:42 -0400
                Re: Return of the Applets? Arne Vajhøj <arne@vajhoej.dk> - 2015-04-05 17:52 -0400
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-05 18:17 -0400
                Re: Return of the Applets? Luuk <luuk@invalid.lan> - 2015-04-06 11:26 +0200
    Re: Return of the Applets? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2015-04-06 13:23 -0500
      Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-06 15:09 -0400
        Re: Return of the Applets? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2015-04-06 17:33 -0500
          Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-06 17:44 -0400
            Re: Return of the Applets? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2015-04-06 19:10 -0500
              Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-06 20:03 -0400
                Re: Return of the Applets? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2015-04-06 21:36 -0500
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-07 09:11 -0400
            Re: Return of the Applets? Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-06 23:25 +0000
              Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-06 19:59 -0400
                Re: Return of the Applets? Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-07 13:29 +0000
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-07 10:45 -0400
                Re: Return of the Applets? Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-07 15:51 +0000
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-07 13:16 -0400
                Re: Return of the Applets? Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-07 20:22 +0000
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-07 17:03 -0400
                Re: Return of the Applets? Leif Roar Moldskred <leifm@huldreskog.localdomain> - 2015-04-07 11:34 -0500
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-07 13:18 -0400
                Re: Return of the Applets? Leif Roar Moldskred <leifm@huldreskog.localdomain> - 2015-04-07 12:40 -0500
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-07 17:06 -0400
                Re: Return of the Applets? Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-07 20:28 +0000
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-07 17:11 -0400
                Re: Return of the Applets? Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-07 23:00 +0000
                Re: Return of the Applets? Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-07 19:25 -0400
  Re: Return of the Applets? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2015-04-06 13:09 -0500

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