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MORITA_Naoyuki · July 4, 2006, 11:49pm

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(1) http://lc.linux.or.jp/lc2001/papers/ruby-gc-paper.pdf
http://www.syst.cs.kumamoto-u.ac.jp/~masato/research/master-slide/index.html
(2) 第5章ガ−ベージコレクション
 第20章 Rubyの未来

MORITA_Naoyuki · July 5, 2006, 6:01am

In article [email protected],
MORITA Naoyuki [email protected] writes:

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http://fw8.bookpark.ne.jp/cm/ipsj/search.asp?flag=6&keyword=IPSJ-TPRO4702009&mode=
http://staff.aist.go.jp/h-ogawa/pro2005-1/

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MORITA_Naoyuki · July 5, 2006, 9:39am

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:28960] e$B@$BeJLe(B GC e$B$K$D$$$Fe(B”
on Wed, 5 Jul 2006 06:47:06 +0900, MORITA Naoyuki
[email protected] writes:

|Ruby e$B$X$N@$BeJLe(B GC e$B$NF3F~$K$D$$$F6=L#$r;}$C$F$$$F!$D4::$r9T$C$F$$$^$9!%e(B
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MORITA_Naoyuki · July 5, 2006, 4:51pm

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MORITA_Naoyuki · July 6, 2006, 12:48am

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e$B%1!<%7%g%sJ}K!$J$I$NLdBj$H9M$($?J}$,BEEv$J$N$G$7$g$&$+!)e(B
e$B$^$?!$$3$N$h$&$J7k2L$K$J$k$3$H$O$h$/CN$i$l$?;v<B$J$N$G$7$g$&$+!)e(B

e$B$3$l0J30$N7o$K$D$$$F$O8eDx$*JV;v$5$;$F$$$?$@$-$^$9!%e(B
e$B$h$m$7$/$*4j$$$7$^$9!%e(B

MORITA_Naoyuki · July 6, 2006, 1:59am

In article [email protected],
MORITA Naoyuki [email protected] writes:

e$B$F$$$k$h$&$K8+$($^$9!%e(B
e$B$^$@7WB,7k2L$@$1$7$+8+$F$^$;$s$,!"6=L#?<$$$G$9$M!#e(B
e$B2~A1$NM>CO$,B8:_$9$k$3$H$rL@$i$+$K<($7$F$$$k$h$&$K;W$($^$9!#e(B

e$B$^$@%W%m%U%!%$%k$O<h$C$F$_$F$$$J$$$N$G$9$,!$$3$N7k2L$r8+$k8B$j$G$O!$e(BGC
e$B%“%k%4%j%:%`$=$N$b$N$NLdBj$H$$$&$h$j$O!$e(BGCe$B3+;O$N%9%l%C%7%g%k%I$d!$%”%me(B
e$B%1!<%7%g%sJ}K!$J$I$NLdBj$H9M$($?J}$,BEEv$J$N$G$7$g$&$+!)e(B
e$B$^$?!$$3$N$h$&$J7k2L$K$J$k$3$H$O$h$/CN$i$l$?;v<B$J$N$G$7$g$&$+!)e(B

GC e$B$r$I$&$$$&%?%$%_%s%0$G5/F0$9$k$+!“$”$k$$$O!“$=$b$=$be(B GC
e$B$r$9$k$+e(B OS e$B$K%a%b%j$rMW5a$7$F%R!<%W$r9-$2$k$+!”$H$$$&H=CG$,e(B
e$B$“$^$j$&$^$/$$$+$J$$$3$H$,$”$k!"$H$$$&$N$O3N$+$@$H;W$$$^$9!#e(B

e$B2?2s$+!“LdBj$,=P$?$H$-$K$^$D$b$H$5$s$,<j$rF~$l$F!”$=$l$K$H$be(B
e$B$J$C$F%H%i%V%k$,5/$3$ke(B (e$BA4A3e(B GC
e$B$5$l$J$/$J$C$F%a%b%j$r?)$$$9e(B
e$B$.$k$H$+e(B) e$B$H$$$&$3$H$,$“$C$?3P$($,$”$j$^$9!#e(B

e$B;d$H$7$F$O!“e(BGC e$B$K$+$+$k;~4V$r7W$C$F@)8f$7$?$i$I$&$+!”$H$$$&e(B
e$B%“%$%G%”$r;}$C$F$$$^$9$,!"$I$&$+$J$!!#e(B[ruby-dev:19250]

MORITA_Naoyuki · July 6, 2006, 4:27pm

In article [email protected],
Tanaka A. [email protected] writes:

e$B$^$@%W%m%U%!%$%k$O<h$C$F$_$F$$$J$$$N$G$9$,!$$3$N7k2L$r8+$k8B$j$G$O!$e(BGC
e$B%“%k%4%j%:%`$=$N$b$N$NLdBj$H$$$&$h$j$O!$e(BGCe$B3+;O$N%9%l%C%7%g%k%I$d!$%”%me(B
e$B%1!<%7%g%sJ}K!$J$I$NLdBj$H9M$($?J}$,BEEv$J$N$G$7$g$&$+!)e(B
e$B$^$?!$$3$N$h$&$J7k2L$K$J$k$3$H$O$h$/CN$i$l$?;v<B$J$N$G$7$g$&$+!)e(B

GC e$B$r$I$&$$$&%?%$%_%s%0$G5/F0$9$k$+!“$”$k$$$O!“$=$b$=$be(B GC
e$B$r$9$k$+e(B OS e$B$K%a%b%j$rMW5a$7$F%R!<%W$r9-$2$k$+!”$H$$$&H=CG$,e(B
e$B$“$^$j$&$^$/$$$+$J$$$3$H$,$”$k!"$H$$$&$N$O3N$+$@$H;W$$$^$9!#e(B

GC e$B8e$K$I$N$/$i$$6u$$$F$l$P%R!<%W$r9-$2$k$+!"$H$$$&4p=`$r$$e(B
e$B$8$/$k$H2~A1$G$-$k$h$&$G$9$M!#e(B

4096e$B8D6u$$$F$l$P!“$H$$$&$N$r!“e(B2e$B3d6u$$$F$l$P!”$H$9$k$H!”$3$&e(B
e$B$G$7$g$&$+!#e(B

(e$B8=:_$Ne(B) GC e$B$O%R!<%W$N%5%$%:$KHfNc$7$?%3%9%H$,$+$+$k$N$G!"Dje(B
e$B?t$7$+6u$+$J$$$J$i$o$j$K9g$o$J$$$C$F$3$H$G$7$g$&$M!#e(B

e$B$3$NLdBj$KBP$7$F!“@$BeJLe(B GC e$B$,@5$7$$2r$+$H$$$&$H!”$5$F!"$I$&e(B
e$B$+$J!#e(B

Index: gc.c

RCS file: /src/ruby/gc.c,v
retrieving revision 1.241
diff -u -r1.241 gc.c
— gc.c 29 Jun 2006 14:57:41 -0000 1.241
+++ gc.c 6 Jul 2006 14:14:55 -0000
@@ -1057,6 +1057,14 @@
int freed = 0;
int i;
unsigned long live = 0;

unsigned long free_min = 0;
for (i = 0; i < heaps_used; i++) {
```
   free_min += heaps[i].limit;
```
}
free_min = free_min * 0.2;
if (free_min < FREE_MIN)
```
   free_min = FREE_MIN;
```
mark_source_filename(ruby_sourcefile);
if (source_filenames) {
@@ -1099,7 +1107,7 @@
}
p++;
}

if (n == heaps[i].limit && freed > FREE_MIN) {

if (n == heaps[i].limit && freed > free_min) {
RVALUE *pp;
```
heaps[i].limit = 0;
```

@@ -1117,7 +1125,7 @@
if (malloc_limit < GC_MALLOC_LIMIT) malloc_limit = GC_MALLOC_LIMIT;
}
malloc_increase = 0;

if (freed < FREE_MIN) {

if (freed < free_min) {
add_heap();
}
during_gc = 0;

MORITA_Naoyuki · July 6, 2006, 9:17pm

e$B?9ED$G$9!%e(B

e$BEDCf$5$s$N%Q%C%A$rE,MQ$7$F7WB,$7D>$7$F$_$^$7$?!%e(B

e$B$+$J$j2~A1$5$l$?$h$&$K8+$($^$9!%e(B

e$B5$$K$J$k$N$O!$$3$N%R!<%W3HD%@oN,$,LdBj$r5/$3$9%1!<%9$,$"$k$+$I$&$+$H$$e(B
e$B$&E@$G$9$,!%e(B

(e$B8=:_$Ne(B) GC e$B$O%R!<%W$N%5%$%:$KHfNc$7$?%3%9%H$,$+$+$k$N$G!"Dje(B
e$B?t$7$+6u$+$J$$$J$i$o$j$K9g$o$J$$$C$F$3$H$G$7$g$&$M!#e(B

e$B$3$NLdBj$KBP$7$F!“@$BeJLe(B GC e$B$,@5$7$$2r$+$H$$$&$H!”$5$F!"$I$&e(B
e$B$+$J!#e(B

e$B%a%b%j$N;HMQNL$r$h$j%?%$%H$K@)8B$9$k$J$I!$>r7o$d4D6-$rJQ$($k$H5DO@$bJQe(B
e$B$o$C$F$/$k$N$+$bCN$l$^$;$s$,!$8=>u$Ne(B Ruby
e$B$NLdBjNN0h$H$7$F$O$3$l$G$$$$e(B
e$B$N$G$O$J$$$+$H9M$($k$H!$$&!<$s$H$J$C$F$7$^$$$^$9$M!%e(B

e$B0J2<$O;d$NG’<1$G$9$,!$@$BeJLe(BGCe$B$N$h$&$J<jK!$,8z$$$F$/$k$N$Oe(B

e$B!&%R!<%W;HMQNLe(B e$BBge(B
e$B!&@8B8%*%V%8%'%/%H?te(B e$BBge(B
e$B!&%,%Y!<%8e(B e$B>.e(B
e$B!&e(BGCe$B2s?te(B e$BBge(B

e$B$H$$$&>r7o$N$H$-$G$"$j!$:#$Ne(B Ruby
e$B%$%s%?%W%j%?$O$J$k$Y$/e(BGCe$B2s?t$r8:$i$9e(B
e$B$h$&$K%R!<%W$r3NJ]$9$k$h$&$J@oN,$r<h$C$F$$$k0Y!$e(B GC
e$B$N8zN(2~A1<jK!$=$Ne(B
e$B$b$N$,8z$-$K$/$$$H$$$&$3$H$J$N$G$7$g$&$+!%e(B

e$B$?$@Bg;(GD$J0u>]$H$7$F!$EDCf$5$s$N%Q%C%A$rEv$F$?>l9g%Z!<%8%U%)!<%k%H$Ne(B
e$B2s?t$O5U$KA}$($F$$$k$N$Ge(B(e$BEvA3$H$$$($PEvA3$G$9$,e(B)e$B!$$=$NJU$j$r9MN8$9$k$He(B
e$B$^$?0c$C$F$/$k5$$O$7$^$9!%e(B

MORITA_Naoyuki · July 7, 2006, 4:09am

In article [email protected],
MORITA Naoyuki [email protected] writes:

e$B$H$$$&>r7o$N$H$-$G$"$j!$:#$Ne(B Ruby e$B%$%s%?%W%j%?$O$J$k$Y$/e(BGCe$B2s?t$r8:$i$9e(B
e$B$h$&$K%R!<%W$r3NJ]$9$k$h$&$J@oN,$r<h$C$F$$$k0Y!$e(B GC e$B$N8zN(2~A1<jK!$=$Ne(B
e$B$b$N$,8z$-$K$/$$$H$$$&$3$H$J$N$G$7$g$&$+!%e(B

e$B$^$!!“%R!<%W$NBg$-$5$KHfNc$7$F;~4V$N$+$+$ke(B GC e$B$r;H$$$J$,$iB.e(B
e$BEYDc2<$r0lDj3d9g0J2<$KM^$($h$&$H$9$l$P!”%R!<%W$NBg$-$5$KHfNce(B
e$B$7$Fe(B GC e$B4V3V$r9-$2$6$k$r$($J$$!"$H$$$&$3$H$G$9$+$M!#e(B

e$B5U$K$$$($P!“e(BGC e$B4V3V$r==J,$K9-$2$5$($9$l$PB.EYDc2<$rM^$($i$le(B
e$B$k$N$G!”$“$H$OB.EYDc2<$rF1$8$KM^$($k$?$a$K0z$-49$($K$9$k$b$Ne(B
e$B$,Bg$-$$$+>.$5$$$+!”$H$$$&$3$H$G$7$g$&$+!#e(B

e$B$?$@Bg;(GD$J0u>]$H$7$F!$EDCf$5$s$N%Q%C%A$rEv$F$?>l9g%Z!<%8%U%)!<%k%H$Ne(B
e$B2s?t$O5U$KA}$($F$$$k$N$Ge(B(e$BEvA3$H$$$($PEvA3$G$9$,e(B)e$B!$$=$NJU$j$r9MN8$9$k$He(B
e$B$^$?0c$C$F$/$k5$$O$7$^$9!%e(B

e$B$=$&$J$C$F$b$*$+$7$/$J$$e(B (e$B$H$$$&$+$J$k$@$m$&e(B)
e$B$H;W$$$^$9$,!"e(B
e$B$=$l$,@-G=$K$I$NDxEY8z$/$N$+$O!"B,Dj$7$F$_$J$$$3$H$K$O$J$s$He(B
e$B$b!#e(B

e$BB>$K;W$$IU$/LdBj$O!“BPOCE*$J%”%W%j%1!<%7%g%s$K$*$1$ke(B GC e$B$K$he(B
e$B$kCfCG$"$?$j$+$J$!!#e(B

MORITA_Naoyuki · July 6, 2006, 10:46am

e$B!!$5$5$@$G$9!#e(B

MORITA Naoyuki wrote:

e$B<B83$K;HMQ$7$?%W%m%0%i%`$Oe(B http://na.yuki.st/src/gctest.rb e$B$G!$e(B
e$B7WB,7k2L$Oe(B http://na.yuki.st/tmp/speed.png e$B$N$h$&$K$J$j$^$7$?!%e(B

e$B$"$kE@$K6aIU$/$HHs@~7A$KCY$/$J$j!$$=$3$r1[$($k$H@~7?$J;~4V$N?-$SJ}$r$7e(B
e$B$F$$$k$h$&$K8+$($^$9!%e(B

e$B$^$@%W%m%U%!%$%k$O<h$C$F$_$F$$$J$$$N$G$9$,!$$3$N7k2L$r8+$k8B$j$G$O!$e(BGC
e$B%“%k%4%j%:%`$=$N$b$N$NLdBj$H$$$&$h$j$O!$e(BGCe$B3+;O$N%9%l%C%7%g%k%I$d!$%”%me(B
e$B%1!<%7%g%sJ}K!$J$I$NLdBj$H9M$($?J}$,BEEv$J$N$G$7$g$&$+!)e(B
e$B$^$?!$$3$N$h$&$J7k2L$K$J$k$3$H$O$h$/CN$i$l$?;v<B$J$N$G$7$g$&$+!)e(B

e$B!!DI;n$7$F$_$^$7$?!#e(B

e$B!!e(Bhttp://www.atdot.net/fp_store/xv3z1j.file/image002.gif
e$B!J%a%b%j!'e(B2GB e$B$N%^%7%s$G$9e(B / ye$B<4$NC10L$OIC!Ke(B

e$B!!LLGr$$$G$9$M$‘!#e(BGC
e$B$J$7$@$H@~7A$J$N$G!"@-G=Nt2=$7$F$$$kFC0[E@$G$O!"e(B
e$B$d$C$Q$je(B GC e$B$N%Q%i%a!<%?$,$^$:$$$s$G$9$+$M$’!#e(Bheaps
e$B$N$"$?$j$+$H$O;W$&$1$I!#e(B

MORITA_Naoyuki · July 17, 2006, 9:02am

e$B?9ED$G$9!#e(B

e$BJV;v$,CY$/$J$j$^$7$?!#e(B

e$B$R$H$^$:!"@-G=I>2A$NE@$r3NG’$7$?$$$N$G!"LZ;3$5$s$NGnO@$H$^$D$b$H$5$s$Ne(B
1 bit reference
countinge$B$K$D$$$F$NO@J8$r8+$;$F$$$?$@$1$J$$$G$7$g$&$+!)e(B

e$B2C$($F!"8=:_;}$C$F$$$k5?LdE@$r5s$2$F$*$-$^$9!#e(B

1.7 e$B0J9_$K@$BeJLe(BGCe$B!"$$h$Se(B1 bit
RCe$B$rF3F~$7$?:W$KB.EY@-G=$,8~>e$7$J$$$+!“e(B
e$B$b$7$/$ODc2<$9$k$H$$$&;v>]$O!”$$*$6$C$Q$K8@$C$F0J2<$N$I$l$@$C$?$N$G$7$ge(B
e$B$&$+!)e(B

(a) GC e$B$N@-G=$K$OKX$I2~A1$,$J$/!"e(BGC
e$B0J30$N%3%9%H$,B?>/A}2C$7$?e(B
(b) GC e$B$N@-G=$K$OKX$I2~A1$,$J$/!“e(BGC
e$B0J30$N%3%9%H$,BgI}$KA}2C$7$?e(B
© GC e$B$N@-G=$O$”$kDxEY$N2~A1$7$?$,!"e(BGC
e$B0J30$N%3%9%H$,BgI}$KA}2C$7$?e(B

e$B>/$J$/$H$bLZ;3$5$s$NO@J8$r8+$?8B$j$G$N0U8+$G$9$,!"e(B

(a) e$B$de(B (b)
e$B$@$C$?$H$9$k$H!“e(B1.4(1.6e$B$G$b!)e(B)e$B7ONs$G$Oe(B GC
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e$B$?$K$b$+$+$o$i$:e(B 1.7
e$B0J9_$G@-G=$K2~A1$,5/$-$J$/$J$C$?M}M3$,5$$K$J$j$^e(B
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e$B5$$K$J$j$^$9!#e(B

e$B$h$m$7$/$*4j$$$7$^$9!#e(B

MORITA_Naoyuki · July 19, 2006, 6:15pm

In article [email protected],
MORITA Naoyuki [email protected] writes:

e$B2C$($F!"8=:_;}$C$F$$$k5?LdE@$r5s$2$F$*$-$^$9!#e(B

e$B;d$O@$BeJLe(BGC e$B$r;n$7$F$*$i$:Hf3S$7$F$$$J$$$N$G$J$<$J$N$+3N$?e(B
e$B$k$3$H$O$$$($J$$$N$G$9$,e(B
(e$B$^$!M=A[$7$F$$$k$3$H$O$"$j$^$9$,e(B)e$B!"e(B
e$B$d$O$j$3$3$O<+J,$G;n$9$N$,3N<B$J$N$G$O$J$$$+$H;W$$$^$9!#e(B

1.8 e$B$K@$BeJLe(BGCe$B$rF~$l$k$N$O;~4V$,$+$+$k$G$7$g$&$+$i!"@$BeJLe(BGC
e$B$,$9$0$KF~$l$i$l$k%P!<%8%g%s$Ge(B [ruby-dev:13656] e$B$N$h$&$JJQ99e(B
e$B$rF~$l$?$N$r$D$/$C$F!"Hf3S$9$k$N$,AaF;$J$s$8$c$J$$$+$H;W$$$^e(B
e$B$9!#e(B

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e$B$&$+!)e(B

(a) GC e$B$N@-G=$K$OKX$I2~A1$,$J$/!"e(BGC e$B0J30$N%3%9%H$,B?>/A}2C$7$?e(B
(b) GC e$B$N@-G=$K$OKX$I2~A1$,$J$/!“e(BGC e$B0J30$N%3%9%H$,BgI}$KA}2C$7$?e(B
(c) GC e$B$N@-G=$O$”$kDxEY$N2~A1$7$?$,!"e(BGC e$B0J30$N%3%9%H$,BgI}$KA}2C$7$?e(B

e$B;W$&$N$G$9$,!“e(BGC e$B$N@-G=$C$F!”$J$s$J$s$G$7$g$&e(B?

1.7 e$B$G%R!<%W$N9-$2$+$?$rJQ$($?$H$+!“$”$k$$$O:#2s%R!<%W$r9-$2e(B
e$B$k%?%$%_%s%0$rJQ$($?$H$+$Ge(B GC e$B$N2s?t$r8:$i$7$?$H$$$&$N$O!"@-e(B
e$BG=$,2~A1$5$l$?$H$$$&$3$H$J$s$G$7$g$&$+e(B?

e$B$“$H!”$h$j:,K\E*$J5?Ld$H$7$F!“$=$b$=$b@$BeJLe(BGC e$B$C$F%W%m%0%ie(B
e$B%`A4BN$N<B9T;~4V$r0lHL$K8:$i$98z2L$,$”$k$b$N$J$s$G$7$g$&$+e(B?

MORITA_Naoyuki · July 20, 2006, 6:08am

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

akre$B$5$s$K$O<a2`$K@bK!$J$N$O==J,>5CN$7$F$$$k$N$G$9$,!#e(B

In message “Re: [ruby-dev:29086] Re: e$B@$BeJLe(B GC e$B$K$D$$$Fe(B”
on Thu, 20 Jul 2006 01:12:40 +0900, Tanaka A. [email protected]
writes:

|> e$B$b$7$/$ODc2<$9$k$H$$$&;v>]$O!"$$$6$C$Q$K8@$C$F0J2<$N$I$l$@$C$?$N$G$7$ge(B
|> e$B$&$+!)e(B
|>
|> (a) GC e$B$N@-G=$K$OKX$I2~A1$,$J$/!"e(BGC e$B0J30$N%3%9%H$,B?>/A}2C$7$?e(B
|> (b) GC e$B$N@-G=$K$OKX$I2~A1$,$J$/!“e(BGC e$B0J30$N%3%9%H$,BgI}$KA}2C$7$?e(B
|> (c) GC e$B$N@-G=$O$”$kDxEY$N2~A1$7$?$,!"e(BGC e$B0J30$N%3%9%H$,BgI}$KA}2C$7$?e(B

e$B$A$c$s$HB,Dj$7$F$$$J$$$N$G$J$s$H$b$$$($J$$$N$G$9$,!"?dB,$7$?e(B
e$B46$8$@$He(B

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Index: gc.c

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