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Re: [Classpath] Re: Question about Boolean
From: |
C. Scott Ananian |
Subject: |
Re: [Classpath] Re: Question about Boolean |
Date: |
Thu, 19 Jul 2001 22:11:32 -0400 (EDT) |
On Thu, 19 Jul 2001, Jeff Sturm wrote:
> (I know someone who once had a usable libgcj runtime in 28KB of memory.
> I'll grant that that takes a lot of hacking anyway... he didn't even have
> a String class in his runtime.)
okay, how about:
class Boolean {
Class TYPE = VMLoader.BooleanTYPE;
}
with VMLoader on gcj being something like:
class VMLoader {
Class BooleanTYPE = boolean.class;
}
and VMLoader on sane VMs being:
class VMLoader {
Class BooleanTYPE = VMLoader.loadPrimitiveClass("boolean");
}
This has a total time over head of *nine loads*, executed *once* at the
beginning of the program. Total space overhead is *nine words* (eleven,
if you need a header for VMLoader). I think even your 28K system can get
by with this.
I don't see why portability is so difficult.
--s
Marxist operative DC SEAL Team 6 Echelon cracking Nazi Delta Force
Seattle immediate LA Leitrim Clinton RNC Dictionary justice milita
( http://lesser-magoo.lcs.mit.edu/~cananian )
--
"These students are going to have to find out what law and order is
all about." -- Brig. General Robert Canterbury, Noon, May 4, 1970,
minutes before his troops shot 13 unarmed Kent State students, killing 4.
--
[http://www.cs.cmu.edu/~dst/DeCSS/Gallery/]
#!/usr/bin/perl -w
# 526-byte qrpff, Keith Winstein and Marc Horowitz <address@hidden>
# MPEG 2 PS VOB file on stdin -> descrambled output on stdout
# arguments: title key bytes in least to most-significant order
$_='while(read+STDIN,$_,2048){$a=29;$c=142;if((@a=unx"C*",$_)[20]&48){$h=5;
$_=unxb24,join"",@b=map{xB8,unxb8,chr($_^$a[--$h+84])address@hidden;s/...$/1$&/;$d=
unxV,xb25,$_;$b=73;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=($t=255)&($d
>>12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*8^$q<<6))<<9
,$_=(map{$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;$t
^=(72,@z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0,@z)[$_%8]}(16..271))
[$_]^(($h>>=8)+=$f+(~$g&$t))address@hidden"C*",@a}';s/x/pack+/g;eval
- Question about Boolean, Tom Tromey, 2001/07/19
- Re: [Classpath] Question about Boolean, C. Scott Ananian, 2001/07/19
- Re: Question about Boolean, Mark Wielaard, 2001/07/19
- Re: Question about Boolean, Tom Tromey, 2001/07/19
- Re: [Classpath] Re: Question about Boolean, C. Scott Ananian, 2001/07/19
- Re: [Classpath] Re: Question about Boolean, Jeff Sturm, 2001/07/19
- Re: [Classpath] Re: Question about Boolean,
C. Scott Ananian <=
- Re: [Classpath] Re: Question about Boolean, Jeff Sturm, 2001/07/19
- Re: [Classpath] Re: Question about Boolean, Tom Tromey, 2001/07/21
- Re: [Classpath] Re: Question about Boolean, C. Scott Ananian, 2001/07/21
- Re: [Classpath] Re: Question about Boolean, Tom Tromey, 2001/07/21
- Re: Question about Boolean, Brian Jones, 2001/07/20
Re: Question about Boolean, Brian Jones, 2001/07/19