From: nobu.nokada@...
Date: 2003-07-05T03:47:01+09:00
Subject: Re: warning in ruby extension eats memory

Hi,

At Sat, 5 Jul 2003 00:16:06 +0900,
ts wrote:
> >> #108454 0x080485f6 in main ()
> >> #108455 0x08048515 in _start ()
> 
> n> I can't get what you mean, these seem to be called normally.
> 
>  108455 call ?

I see.  Didn't think you mean the level.

>  Try to reproduce the error and you'll see that the number of call is
>  less than 108455 when ruby is stopped by stack_check().
> 
>  How ruby can make 108455 calls ?

I got only 69440 calls until stack_check() failed, with ulimit
1000000.

#0  rb_exc_raise (mesg=1075764192) at /home/nobu/src/ruby/1.8/eval.c:3922
#1  0x08068364 in stack_check () at /home/nobu/src/ruby/1.8/eval.c:4603
#2  0x08063318 in rb_call0 (klass=1075784832, recv=1075782312, id=7217, oid=3213763016, argc=1,
    argv=0xbf8e2430, body=0x401f2708, nosuper=1) at /home/nobu/src/ruby/1.8/eval.c:4853
#3  0x0805a264 in rb_call (klass=1075784832, recv=1075782312, mid=7217, argc=1, argv=0xbf8e2430,
    scope=1) at /home/nobu/src/ruby/1.8/eval.c:5105
#4  0x0805a40e in rb_funcall (recv=1075782312, mid=7217, n=1) at ruby.h:643
#5  0x08077f8c in io_write (io=1075782312, str=1076145056) at /home/nobu/src/ruby/1.8/io.c:419
#6  0x080683f7 in call_cfunc (func=0x8077ebc <io_write>, recv=1075782312, len=-1081204280, argc=1,
    argv=0x8068352) at /home/nobu/src/ruby/1.8/eval.c:4751
(snip)
#69434 0x40017afc in test_free (info=0x813d918) at test.c:11
#69435 0x080535b3 in ruby_finalize () at /home/nobu/src/ruby/1.8/eval.c:1332
#69436 0x0805368c in ruby_cleanup (ex=0) at /home/nobu/src/ruby/1.8/eval.c:1359
#69437 0x080537e0 in ruby_stop (ex=0) at /home/nobu/src/ruby/1.8/eval.c:1387
#69438 0x08053828 in ruby_run () at /home/nobu/src/ruby/1.8/eval.c:1399
#69439 0x080525fd in main (argc=4, argv=0xbffff6d4, envp=0xbffff6e8)
    at /home/nobu/src/ruby/1.8/main.c:50
#69440 0x400a9a07 in __libc_start_main () from /lib/i686/libc.so.6

> >> bad value from getrlimit() ????
> 
> n> On my machine, it was stopped by stack_check() in rb_call0().
> 
>  This is this that I don't understand : ruby is not stopped by
>  stack_check() and can have 108455 call. This is the value of 108455 that I
>  find strange.

stack_check() can't be perfect.  I suspect Eugene might set
the stack size unlimited.

-- 
Nobu Nakada