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Date: Mon, 04 Mar 2002 16:05:17 +0900
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From: Fuyuhiko Maruyama <fuyuhik8@is.titech.ac.jp>
To: java@jp.FreeBSD.org
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$B4];3$G$9!#(B

On Mon, 4 Mar 2002 10:02:45 +0900 (JST), Daichi GOTO wrote:
> > $B%M%$%F%#%V%9%l%C%I$O(BJava VM$B$,<+A0$GMQ0U$7$F$$$J$$5!G=$rMQ$$$F(BJava$B$N(B
> > multi-threading$B$r<B8=$9$k>l9g$r0UL#$7$F$$$k$@$1$G!"$=$N5!G=$,<B:]$K$I(B
> > $B$N$h$&$K<B8=$5$l$F$$$k$+$H$$$&$3$H$K$O(B($BO@M}E*$K$O(B)$BL54X78$G$9!#(B
> > #GC$B$J$I<B8=$K4XO"$7$F!"<B:]$N%3!<%I$G$OL)@\$KMm$s$G$^$9$,!#(B
> 
> > $B$D$^$j!"(BJava$B$N%M%$%F%#%V%9%l%C%I$H$$$o$f$k%+!<%M%k%9%l%C%I$O%l%$%d!<$N(B
> > $B0c$&OCBj$G$9!#(B($BO@M}E*$K$O(B)$B%M%$%F%#%V%9%l%C%I$J(BJava VM$B$O(BOS$B$b$7$/$O%i%$(B
> > $B%V%i%j$NDs6!$9$k(BAPI$B$rMQ$$$F(Bmulti-threading$B$N5!G=$r;H$C$F$$$k$@$1$J$N$G!"(B
> > $B%9%l%C%I$,J#?t$N(BCPU$B$K?6$jJ,$1$i$l$k$+$I$&$+$H$$$C$?E@$O(BJava$B$H$OL54X78(B
> > $B$G$9!#(B
> 
> $B$J$k$[$I!#KM$O$3$NE@$K8m2r$,$"$j$^$7$?!#N;2r$G$9!#(B
> 
> --
> # $B$=$l$rF'$^$($?>e$G!":#EY$O(BFreeBSD$B$K$*$1$k%+!<%M%k%9%l%C%I$N<BAu(B
> # $B$K$D$$$F$A$g$C$H!#(B
> 
> # FreeBSD-current$B$G$b%9%l%C%I$N<BAu$C$F%i%$%V%i%j%Y!<%9$K$J$k$N$G(B
> # $B$7$g$&$+!#$9$k$C$F$$$&$H!"(BLinux$B$N$h$&$K(BJava$BFbIt$N%9%l%C%I$,(BOS$B$N(B
> # $B%W%m%;%9$K$J$k$+$i!"(BSMP$B$G(BCPU$B$4$H$K%W%m%;%9$,=hM}$5$l$k287C$r<u$1(B
> # $B$k$H$$$C$?$3$H$,(BFreeBSD$B$G$O<B8=$5$l$J$$!"$^$?$OB>$NJ}K!$G(BSMP$B;~(B
> # $B$J$I$O=hM}$,J#?t(BCPU$B$K?6$i$l$k$h$&$K$J$k$H$$$&$3$H$G$7$g$&$+!#(B
> # $B$=$l$H$b:#$NJ}K!$@$H!"$d$C$Q$j(BJVM$B%W%m%;%9$O(BSMP$B;~$G$b0l$D$N(BCPU
> # $B$G$7$+F0:n$7F@$J$$$+!#(B
$B%^%k%A%9%l%C%I$K4XO"$7$?5!G=$H$7$F(BFreeBSD-current$B$G8=:_3+H/$5$l$F$$$k(B
$B$b$N$O(BKSE$B$H8F$P$l$F$$$^$9!#$3$l$O!"(BKSE$B0JA0$N%+!<%M%k$N%9%1%8%e!<%i$,BP(B
$B>]$H$7$F$$$k<B9T$NC10L$,%W%m%;%9$G$"$k$N$KBP$7!"$$$o$f$k%9%l%C%I$KBP1~(B
$B$9$k$h$&$J!"%W%m%;%9Kh$KJ#?t;}$D$3$H$N$G$-$kC10L$G$"$k(BKernel Scheduled
Entity(KSE)$B$H$$$&35G0$r%+!<%M%k$N%9%1%8%e!<%i$KF3F~$9$k$b$N$G$9!#(BKSE$B$O(B
$B%+!<%M%k$,%9%1%8%e!<%k$NBP>]$H$9$kC10L$J$N$G!"(BSMP$B%^%7%s$G$OJ#?t$N(BCPU$B$,(B
$BF1$8%W%m%;%9$NJL$N(BKSE$B$KF1;~$K3d$jEv$F$i$l$k$3$H$,4|BT$G$-$^$9!#(B

$B$3$l$@$1$G$O!"(BLinux$B$N(Brfork$B%Y!<%9$N%^%k%A%9%l%C%I<BAu$HBg$7$?0c$$$O$J$$(B
$B$h$&$K8+$($k$N$G$9$,!"(BKSE$B$H%+!<%M%k$N%9%1%8%e!<%i$N<~JU$G$O(BScheduler
Activation(SA)$B$GDs0F$5$l$F$$$k$h$&$J!"$"$k(BKSE$B$,%V%m%C%/$9$k(Bsyscall$B$rH/(B
$B9T$7$?>l9g$J$I$K!"%W%m%;%9A4BN$r%V%m%C%/$9$kBe$o$j$K!"%f!<%6%l%Y%k$N%9(B
$B%l%C%I%i%$%V%i%j$N%9%1%8%e!<%i$r(Bupcall$B$9$k$h$&$J5!G=$,MQ0U$5$l$k$N$G!"(B
$B%+!<%M%k%l%Y%k$N%9%1%8%e!<%j%s%0$NC10L$G$"$k(BKSE$B$H%f!<%6%l%Y%k$G<B8=$9(B
$B$k%9%l%C%I$rAH$_9g$o$;$?!"$h$j8-$$%^%k%A%9%l%C%I<BAu$,<B8=$5$l$k$H4|BT(B
$B$5$l$F$$$^$9!#(B

$B$3$l0J>e>\:Y$J@bL@!"$b$7$/$O!"@53N$J@bL@$O;d$K$O$G$-$^$;$s!#(B
http://people.freebsd.org/~fsmp/SMP/SMP.html
$BJU$j$K$"$kDxEY$N>pJs$,$^$H$^$C$F$$$^$9$,!"$I$NDxEY:G6a$N>p@*$KBP1~$7$F(B
$B$$$k$+$OITL@$G$9!#(B


> $B4pK\E*$J$3$H$+$b$7$l$^$;$s$,!"(BSolaris$B$N$3$H$O$^$C$?$/CN$i$J$$$N$G(B
> $B$I$J$?$+$4B8$8$NJ}$$$i$C$7$c$$$^$7$?$i65$($F$/$@$5$$!#(B
> Solaris$B$G$O(BSolaris$B%9%l%C%I!J$H$$$&$N$+$J!)!K$G:n@.$5$l$?%9%l%C%I(B
> $BC#$O(BSMP$B;~$K$O0l$D$N%W%m%;%9$H$7$F0l$D$N(BCPU$B$G=hM}$5$l$k$b$N$G$7$g(B
> $B$&$+!#(BSolaris$B$G$bJ#?t(BCPU$B$G=hM}$5$l$k;~$N<B9TC10L$O%W%m%;%9$G$9$h(B
> $B$M!#(BSolaris$B$N%"%W%m!<%A$O%9%l%C%I$r%W%m%;%9$H$7$F<BAu$9$k$H$$$&(B
> Linux$B$N%"%W%m!<%A$H$O0c$$$^$9$G$7$g$&$+!#(B
Solaris$B$G$O(BLight Weight Process(LWP)$B$H8F$P$l$k!"%W%m%;%9Kh$KJ#?t;H$&$3(B
$B$H$N$G$-$k%+!<%M%k$N%9%1%8%e!<%j%s%0BP>]$H!"%f!<%6%l%Y%k$G$N%^%k%A%9%l%C(B
$B%I<BAu$rAH$_9g$o$;$?$$$o$f$k(B2-level$B%9%l%C%I$,Ds6!$5$l$F$$$^$9!#(B


> Linux$B<BAu$N>\:Y$OCN$i$J$$$N$G$9$,!"(BJava$BFbIt$N%9%l%C%I$r!"(Brfork()$B$G(B
> $B$$$/$D$+$N%;%0%a%s%H$O6&M-$7$?$^$^?7$7$$%W%m%;%9$H$7$F@8@.$7$FMxMQ(B
> $B$7$F$$$k>l9g!"(BSMP$B;~$K%W%m%;%9$4$H=hM}$,(BCPU$B$K?6$i$l$k$3$H$+$i!"(B
> Java$B%9%l%C%I$,<B:]$K(BCPU$B$GF1;~=hM}$5$l$k$3$H$,2DG=$K$J$k!"$H$$$&$3(B
> $B$H$G$9$h$M!#$3$l$9$4$/JXMx$J$3$H$@$H;W$C$F$^$7$?(B($B%9%l%C%I$r%W%m%;(B
> $B%9$H$7$F07$&$3$H$N@'Hs$OKM$K$O$o$+$i$J$$$N$G$9$1$I$b(B)$B!#(B
> $B$I$N%a!<%k$@$C$?$+3P$($F$J$$$N$G$9$,!"(BNate$B$,0lG/$/$i$$A0!"(BLinux$B$N(B
> $B%+!<%M%k%9%l%C%I$N<BAu$O$$$/$i$+5!G=$,B-$j$J$$$+$i!"$b$C$H5!G=$N$7$C(B
> $B$+$j$7$?%+!<%M%k%9%l%C%I$r(BFreeBSD$B$K<BAu$9$k$D$b$j$@!"1>!91>!9!"$_(B
> $B$?$$$JFbMF$N$3$H$r=q$$$F$$$?$H5-21$7$F$$$^$9!#$3$N<B8=$,(Buthread$B$G(B
> $B9T$o$l$F$$$k!"$C$F$$$&$3$H$K$J$k$N$+$J$!!#(B

$B%f!<%6%l%Y%k$N%^%k%A%9%l%C%I<BAu$K$O%9%l%C%I$N%3%s%F%-%9%H%9%$%C%A$N%3(B
$B%9%H$,0B$$$H$$$&MxE@$,$"$j$^$9!#(BI/O$B$,B?$/;H$o$l$k%^%k%A%9%l%C%I%W%m%0(B
$B%i%`$N<B9T$K$O!"%f!<%6%l%Y%k$N%^%k%A%9%l%C%I<BAu$N;}$D$3$NMxE@$,$&$^$/(B
$BF/$-$^$9!#0lJ}!"%W%m%;%9$K$O(BCPU$B$,0l$D$7$+3d$jEv$F$i$l$^$;$s$N$G!"7W;;(B
$B<gBN$N%^%k%A%9%l%C%I%W%m%0%i%`$r(BSMP$B%^%7%s$G<B9T$9$k>l9g$J$I$G$O!"%^%k(B
$B%A%9%l%C%I$K$9$k287C$,A4$/$"$j$^$;$s!#(B

rfork()$B$rMQ$$$?%+!<%M%k%l%Y%k$N%^%k%A%9%l%C%I<BAu$O!"%9%l%C%I$N%3%s%F(B
$B%-%9%H%9%$%C%A$,<B<AE*$K%W%m%;%9$N%3%s%F%-%9%H%9%$%C%A$J$N$G!"Hs>o$K%3(B
$B%9%H9b$H8@$($^$9!#$=$N$?$a!"(BI/O$B$,B?$/;H$o$l$k%^%k%A%9%l%C%I%W%m%0%i%`(B
$B$N<B9T$K$O!"%f!<%6%l%Y%k$N%^%k%A%9%l%C%I<BAu$KHf$Y$k$H%3%s%F%-%9%H%9%$%C(B
$B%A$N%3%9%H$NJ,@-G=$,0-2=$7$^$9!#0lJ}!"7W;;<gBN$N%^%k%A%9%l%C%I%W%m%0%i(B
$B%`$r(BSMP$B%^%7%s$G<B9T$9$k>l9g$J$I$G$O!"J#?t(BCPU$B$rMQ$$$k287C$r<u$1$k$3$H$,(B
$B$G$-$^$9!#(B

$B7W;;<gBN$N%^%k%A%9%l%C%I%W%m%0%i%`$ODA$7$$$N$G!"(BSMP$B%^%7%s$N>e$G<B9T$9(B
$B$k>l9g$G$b!"%+!<%M%k%l%Y%k$N%^%k%A%9%l%C%I<BAu$KBP$7$F%f!<%6%l%Y%k$G$N(B
$B%^%k%A%9%l%C%I<BAu$NJ}$,NI$$@-G=$r<($9$3$H$bM-$jF@$kOC$G$9!#(B

#$B$I$A$i$+0lJ}$rA*$V$N$J$i%f!<%6%l%Y%k%9%l%C%I$@$H;W$&!#(B


> > > $B%l%Y%k$N%9%l%C%I$@$H!"!V(BFreeBSD$B$K$*$1$k(BJava$B%M%$%F%#%V%9%l%C%I(B
> > > $B$N<B8=$O%f!<%6%i%s%I$N%9%l%C%I%i%$%V%i%j$G9T$C$F$$$^$9!W$HI=8=(B
> 
> > $BC1$K(BFreeBSD$B$N%M%$%F%#%V%9%l%C%I$O(BPOSIX$B%9%l%C%I$r;H$C$F$$$^$9$@$1$GNI$$(B
> > $B$N$G$O!)(B  $B$=$l0J>e:Y$+$$$3$H$r=q$$$F$o$+$k?M$O=q$+$J$/$F$b$o$+$C$F$$$k(B
> > $B?M$@$1$@$H;W$&$N$G$9!#(B
> 
> $BN;2r!#(B
> 
> > > $B$4;XE&$9$kFbMF$,$I$l$@$1?<9o$J$b$N$+$b$o$+$C$F$$$J$$$N$G!"26$<$s(B
> > > $B$<$s%@%a$@$!!#(B
> > GC$B$NEY$K(BJava$B$N%a%b%j%7%9%F%`$,2u$l$F$$$/$N$G$9!#$"$k$$$O!"(B
> > ArithmeticException$B$,=P$k$Y$-$H$3$m$GL58B%k!<%W$9$k$H$+!D!D!#4JC1$K=q(B
> > $B$/$H!"!V$^$H$b$KF0$/$o$1$,$J$$!W$H$$$&$@$1$N$3$H$G$9!#(B
> 
> $BOC$rJ9$/8B$j$G$O!"0l$D%U%i%0$rDI2C$7$F!J(BGC$B$N%9%l%C%IMQ$K!K!"$=$N%U%i%0$,(B
> ON$B$K$J$C$?>uBV$G$O$?$@C1$K3d$j9~$_$,Mh$F$b%(%i!<$rJV$9!"$^$?$O$=$N3d$j9~(B
> $B$_$r(BGC$B$N%9%l%C%I$,=*N;$9$k$^$?BT$A9TNs$KBT5!$9$k$h$&$J<BAu$rDI2C$9$k$@$1(B
> $B$GNI$$$h$&$J5$$,$9$k$N$G$9$,!"$3$l$@$H(BPOSIX$B%9%l%C%I$N5,Ls$KH?$7$^$9$+!#(B
$BLdBjE@$O(BPOSIX$B%9%l%C%I$NHO0O$r1[$($?(B(POSIX$B30$N(B)API$B$G$"$k!"(B
pthread_{suspend,resume}_np()$B$H62$i$/(BPOSIX$B;EMMFb$N5!G=$G$"$k(B
pthread_cond_timedwait()$B$K$h$kBT5!Cf%9%l%C%I$N?6$kIq$$$N4X$o$j$J$N$G!"(B
$B!V$I$&$"$k$Y$-$+!W$H$$$&E@$G!"B?J,$K<qL#(B($B$b$7$/$O=!65(B)$B$NLdBj$r4^$s$G$$(B
$B$k$N$G$9!#(B


> $B$@$+$i(BJava$B$G$^$H$b$KF0$/$h$&$K(Buthread$B<+?H$r$*$$$=$l$H=q$-49$($k$o$1$K$O(B
> $B$$$+$J$$!"$H$$$&$3$H$G$7$g$&$+!#B>$N(BPOSIX$B%9%l%C%I$r;H$C$F$$$k%"%W%j%1!<(B
> $B%7%g%s$H$N7s$M9g$$$b$"$k$7!#(B
> 
> > $B$3$l$OA4$/$o$+$i$J$$$G$9!#(BGreg Lewis$B$OA4BN$N$^$H$aLr$H$$$C$?$H$3$m$G!"(B
> 
> $B$=$s$JJ70O5$$"$j$^$9$M!#8e$O(BKees J.Koster$B$"$?$j$b$=$l$KE0$7$F$$$k$+$J$H!#(B
> 
> > Sun$B$N(BSCSL$B$N%=!<%9(Btarball$B$,?7$7$/$J$C$?$H$-$J$I$K!"(BCVS$B$K(Bimport$B$7$?$j$H(B
> > $B$$$&$3$H$b$7$F$$$^$9!#(B
> > #$B7v2^$NCg:[$H$+!D!D(B
> 
> $B$s!<!"$=$&8@$o$l$k$H3N$+$K!#(B
> 
> > Bill Huey$B$,(BHotSpot$B$r$$$8$C$F$$$k$i$7$$$3$H$O$o$+$k$N$G$9$,!"H`$O0l?M$G(B
> > $B:n6H$r$9$k$N$,9%$-$J$h$&$J$N$G!"$"$kDxEY@.2L$,$^$H$^$k$^$G$O(Bjava-port
> > $B$J(BML$B$K$b>pJs$ON.$l$F$-$^$;$s!#(B
> 
> $B3N$+$K$=$s$JJ70O5$$"$j$^$9$M!#(B
> 
> > #$BN.$9$H7v2^$r?a$C3]$1$i$l$k$N$G$$$d$J$N$+$b$7$l$^$;$s!#(B
> 
> $B$3$l$b$"$k$+$b$7$l$^$;$s$M!#(B
> 
> > patchset$BFb$N(BChangeLog$B$r8+$k$HMM;R$,$o$+$k$+$bCN$l$^$;$s$,!"(B*BSD$B$N(BJava
> > $B$N0\?":n6H$O!"%3%s%9%?%s%H$K9T$o$l$F$$$k$o$1$G$O$J$$$G$9!#$G!"2?$+L\3P(B
> > $B$^$7$$?JE8$,$"$C$?$H$-$K(Bpatchset$B$,=P$^$9!#$^$?!"L\3P$^$7$$?JE8$H$$$&$N(B
> > $B$OC/$+$,;W$$N)$C$F:n6H$r$7$?$H$-$K$7$+8+$i$l$^$;$s!#(B
> 
> $B$=$&$G$9$M!#(B*BSD$B$C$]$$$C$F$$$&$+$J$s$F$$$&$+!#(B
> 
> > $B4pK\E*$J;EAH$_$OF1$8$G$9!#$?$@$7!"(BSolaris$B$G$O(BSolaris$B%9%l%C%I$rMQ$$$F$$(B
> > $B$k$N$G<BAu$O0c$$$^$9!#$^$?!"F1$8(BPOSIX$B%9%l%C%I$rMQ$$$k(BLinux$BHG$HHf$Y$F$b!"(B
> > GC$B$J$I$N<B8=$N$?$a$K!"!V(BPOSIX$B%9%l%C%I!W$N(BAPI$B$GDs6!$5$l$F$$$J$$5!G=$,I,(B
> > $BMW$H$J$k$N$G!"$=$NJU$j$O%9%l%C%I%i%$%V%i%j$K0MB8$7$?<BAu$,$5$l$F$$$^$9!#(B
> 
> $B$J$k$[$I!#(B
> $B$=$l$G:#$N(Buthread$B$O!V(BGC$B<B8=$N$?$a$N%9%l%C%I%i%$%V%i%j$K0MB8$7$?<BAu!W$,(B
> $B$J$5$l$F$J$$$C$F$3$H$G$9$M!#(B
> libc_r$B$C$F$=$&4JC1$K=q$-49$($FNI$$$b$N$8$c$J$$$C$9$h$M!#$I$&$9$k$s$@$m$&!#(B
$B8m2r$5$l$F$7$^$C$?!D!D!#(B
$B$h$j@53N$K=q$/$H!"(BGC$B$N$?$a$K$O(BPOSIX$B%9%l%C%I$N(BAPI$B$GDj5A$5$l$F$$$J$$!"%9(B
$B%l%C%I%3%s%F%-%9%H$N<hF@$J$I$N5!G=$,I,MW$J$N$G!"$=$N5!G=$r<B8=$9$kItJ,(B
$B$,!V(BJava VM$BFb$K%9%l%C%I%i%$%V%i%j0MB8$N7A$G<BAu$5$l$F$$$k!W$H$$$&$3$H(B
$B$G$9!#(B

--
$B4];3E_I'(B
$BEl5~9)6HBg3XBg3X1!(B $B>pJsM}9)3X8&5f2J(B $B?tM}7W;;2J3X@l96(B $B>>2,8&5f<<(B
mailto:fuyuhik8@is.titech.ac.jp
http://matsu-www.is.titech.ac.jp/%7emaruyama/
