From: Tanaka Akira <akr@...17n.org>
Date: 2002-09-26T05:28:13+09:00
Subject: [ruby-dev:18382] Re: rubicon on EWS4800

In article <200209251737.g8PHbdR03024@sharui.nakada.kanuma.tochigi.jp>,
  nobu.nakada@nifty.ne.jp writes:

> Mswin32.dont/only$B$K$9$k$h$j$b(BUnix.only/dont$B$K$9$Y$-$G$7$g$&!#(B

$B$?$7$+$K!#$G$b(B only $B$8$c$J$/$F(B or_variant $B$+$J!#(B

> > thread $B$O(B... $B$J$s$@$C$?$+$J!#$3$l$rF~$l$H$+$J$$$H;~!9<:GT$7$F$$$?3P$((B
> > $B$,$"$j$^$9!#(B
> 
> $B$3$3$G%(%i!<$K$J$C$?$N$r8+$?3P$($O$J$$$h$&$J5$$,$7$^$9!#(B

$B$?$/$5$sF0$+$7$?$i=P$F$-$^$7$?!#(B

% ruby TestThreadGroup.rb
TestThreadGroup#test_00sanity .
TestThreadGroup#test_add .
TestThreadGroup#test_list deadlock 0x1bcaa8: 2:0  - TestThreadGroup.rb:26
deadlock 0x1bcb80: 2:0  - TestThreadGroup.rb:26
deadlock 0x1bcc58: 2:0  - TestThreadGroup.rb:26
deadlock 0x1bcd30: 2:0  - TestThreadGroup.rb:26
deadlock 0x1bce08: 2:0  - TestThreadGroup.rb:26
deadlock 0x1bcee0: 2:0  - TestThreadGroup.rb:26
deadlock 0x1bcfb8: 2:0  - TestThreadGroup.rb:26
deadlock 0x1bd090: 2:0  - TestThreadGroup.rb:26
deadlock 0x1bd168: 2:0  - TestThreadGroup.rb:26
deadlock 0x100fa8: 2:8 (main) - TestThreadGroup.rb:33
deadlock 0x1bc9d0: 2:0  - TestThreadGroup.rb:26
TestThreadGroup.rb:26:in `test_list': Thread: deadlock (fatal)
        from TestThreadGroup.rb:31:in `each'
        from TestThreadGroup.rb:31:in `test_list'
        from /home/akr/src/ruby/z/lib/ruby/site_ruby/1.7/runit/testcase.rb:64:in `send'
        from /home/akr/src/ruby/z/lib/ruby/site_ruby/1.7/runit/testcase.rb:64:in `run_bare'
        from /home/akr/src/ruby/z/lib/ruby/site_ruby/1.7/runit/testcase.rb:51:in `run'
        from /home/akr/src/ruby/z/lib/ruby/site_ruby/1.7/runit/testsuite.rb:16:in `run'
        from /home/akr/src/ruby/z/lib/ruby/site_ruby/1.7/runit/testsuite.rb:16:in `each'
        from /home/akr/src/ruby/z/lib/ruby/site_ruby/1.7/runit/testsuite.rb:17:in `run'
        from /home/akr/src/ruby/z/lib/ruby/site_ruby/1.7/runit/cui/testrunner.rb:26:in `run'
        from ./../rubicon_tests.rb:238:in `handleTests'
        from TestThreadGroup.rb:44

$B$H$$$&$h$&$K(B deadlock $B$,5/$3$j$^$9!#(B
(100$B2sF0$+$7$F?t2s$H$$$C$?$H$3$m$G$9$,!#(B)

$B$5$F!">e$N7k2L$O<!$N$h$&$K>/!92~9T$rA}$d$7$?HG$G$N%(%i!<%a%C%;!<%8$G$9!#(B

    22    def test_list
    23      tg = ThreadGroup.new
    24      10.times do
    25        t = Thread.new {
    26          Thread.stop
    27        }
    28        tg.add(t)
    29      end
    30      assert_equals(10, tg.list.length)
    31      tg.list.each {|t|
    32        t.wakeup
    33        t.join
    34      }
    35    end

$B%(%i!<%a%C%;!<%8$+$i$O(B main thread $B$,(B 33$B9TL\(B(t.join)$B$G;_$^$C$F$$$F!"(B
26$B9TL\(B(Thread.stop)$B$G;_$^$C$F$k%9%l%C%I$,(B 10$B8D$"$k$3$H$,$o$+$j$^$9!#(B

$B$*$=$i$/!"(B

1. main $B$G(B Thread.new $B$,F0$-!"?7$7$$%9%l%C%I$,$G$-$k(B(th $B$H$9$k(B)
2. th $B$G(B (Thread.stop $B$KE~C#$9$kA0$K(B) context switch $B$,$*$-$k(B
3. main $B$G(B t.wakeup $B$,8F$P$l$k$,(B th $B$O(B run $B$J>uBV$J$N$GJQ2=$J$7(B
4. main $B$G(B t.join $B$,8F$P$l$F(B th $B$N=*N;$rBT$D$?$a$K(B th $B$K(B context
   switch $B$5$l$k(B
5. th $B$G(B Thread.stop $B$,<B9T$5$l!"$3$l$r5/$3$9$b$N$O$$$J$$$N$G(B deadlock

$B$H$$$&(B story $B$@$H;W$&$s$G$9$,!#(B

($B$=$&$+!"(BThread.critical = false $B$O$$$i$J$+$C$?$+$J(B)
-- 
[$BEDCf(B $BE/(B][$B$?$J$+(B $B$"$-$i(B][Tanaka Akira]
$B!V$U$($m(B! $B$o$+$a$A$c$s:n@o$G$9$(C"=$B!W(B(Little Worker, $B7KM7@84](B)