Re: Re: Real-time Garbage Collection

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2 total messages Started by Dave Jones Thu, 21 Sep 1989 21:16

#113

Author: Dave Jones
Date: Thu, 21 Sep 1989 21:16

22 lines
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A very wise man once said, "Floating point representation is a mistake.
If you don't know enough about the problem to scale the quantities, you
don't know enough about the problem."

May he rest in peace. He was martyred by an angry hoard of Fortran
application programmers.

If he had lived, today he might say, "Garbage collection is a mistake.
If you don't know enough about the problem to free the unreferenced
memory, you don't know enough about the problem."

If I had lived, I probably would agree with him.

I have some library packages, oops -- I meant to say "ADT's" --
which help.  I can declare Stacks, which can be marked.  Later you can
deallocate all the memory above the mark in one very fast pop. That
covers many many situations. I also have Heaps which contain blocks
all of one size. Not only is it quicker than your typical malloc(),
sometimes by a factor of several hundred, but if you are through with
all the records in a Heap, just destroy the entire Heap. Both of these,
like all my librar.. er ADT's, grow in size indefinitely, as required.

Re: Re: Real-time Garbage Collection

#116

Author: Steve Tynor
Date: Fri, 22 Sep 1989 12:25

20 lines
1322 bytes

In article <8222@goofy.megatest.UUCP> djones@megatest.UUCP (Dave Jones) writes:
...
>If he had lived, today he might say, "Garbage collection is a mistake.
>If you don't know enough about the problem to free the unreferenced
>memory, you don't know enough about the problem."
>
>If I had lived, I probably would agree with him.
...
>all the records in a Heap, just destroy the entire Heap. Both of these,
>like all my librar.. er ADT's, grow in size indefinitely, as required.
                                ^^^^^^^^^^^^^^^^^^^^^^^^^
I assume this was intended to be followed by a ":-)". 

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
No problem is so formidable that you can't just walk away from it.
                     
    Steve Tynor
    Georgia Tech Research Institute
    Artificial Intelligence Branch
    tynor@prism.gatech.edu

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