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Message-Id: <20000403191923Y.simokawa@sat.t.u-tokyo.ac.jp>
Date: Mon, 03 Apr 2000 19:19:23 +0900
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
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Subject: [FreeBSD-users-jp 50982] Re: gnuplot
 =?ISO-2022-JP?B?GyRCJEgbKEI=?= malloc
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$B0JA0$b;XE&$5$;$FD:$$$?$H;W$$$^$9$,(B,

okuyama> $B5pBg$J(B heap $BNN0h$KBP$9$k!"3HBg7?$N(B realloc $B$,7+$jJV$5$l$F$*$j!"$=$N$?(B
okuyama> $B$S$K%3%T!<$,BgNL$K9T$o$l$F$$$k$N$G$7$g$&!#(Bsystem call overhead $B$H(B 
okuyama> copy overhead $B$,_ZNv$7$FCY$$$N$@$H;W$$$^$9!#5pBg$JNN0h$KBP$9$k!"(B
okuyama> Malloc/Realloc $B$N>l9g!"(BFreeBSD $B$O(B mmap $B$G%a%b%j6u4V$rD>@\3NJ]$9$k@oN,(B
okuyama> $B$r$H$C$F$$$^$9$+$i!#(B

mmap $B$r;H$&$N$O4IM}NN0h$N$_$G$9(B. $B8+$k$Y$-$O(B utrace $B$H(B break system call $B$G$9(B.

>  30421 gnuplot.sysmallo CALL  mmap(0,0x3000,0x3,0x1002,0xffffffff,0,0,0)
>  30421 gnuplot.sysmallo CALL  mmap(0,0x5000,0x3,0x1002,0xffffffff,0,0,0)
>  30421 gnuplot.sysmallo CALL  mmap(0,0x7000,0x3,0x1002,0xffffffff,0,0,0)

0x7000 byte $B$C$F$=$s$J$KBg$-$JNN0h$G$9$+(B?

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: finger -l simokawa@sat.t.u-tokyo.ac.jp
