Re: FreeBSD: "lua in realloc(): warning: recursive call"

[eugeny gladkih <john@...>]

>>>>> "AK" == Asko Kauppi <askok@dnainternet.net> writes:

 AK> It reproduces steadily.

 AK> I'm begining to wonder if something special needs to be done in
 AK> FreeBSD to create a multithreaded program, maybe in the phase when
 AK> Lua itself is compiled.

you should specify -lpthread linking Lua on FreeBSD >= 5.3
(-lc_r for FreeBSD prior 5.3) in multithread environment.


 AK> man pages have this to say:

 AK> "  recursive call  A process has attempted to call an allocation
 AK> function
 AK>      recursively.  This is not permitted.  In particular, signal
 AK> handlers
 AK>      should not attempt to allocate memory."

 AK> It does not say about multithreaded programs, maybe the particular
 AK> malloc is _not_ multithreading capable?  My Lanes module links with - 
 AK> lpthread, but Lua itself does not.

 AK> -asko



 AK> Gerhard Sittig kirjoitti 19.5.2007 kello 14:34:

 >> On Sat, May 19, 2007 at 01:48 +0300, Asko Kauppi wrote:
 >>> 
 >>> Testing Lua Lanes on FreeBSD gives the above error.  Does anyone have
 >>> an idea what might be the cause?
 >>> 
 >>> $ uname -a
 >>> FreeBSD td152.testdrive.hp.com 6.2-RELEASE FreeBSD 6.2-RELEASE #0:
 >>> Fri Jan 12 11:05:30 UTC 2007     root@dessler.cse.buffalo.edu:/usr/
 >>> obj/usr/src/sys/SMP  i386
 >> 
 >> Can you reproduce it?
 >> 
 >> The PHK implementation of the memory allocator has a very nice
 >> feature:
 >> Have a look at the malloc(3) manpage, search for "malloc.conf".  This
 >> "file" is a symlink and its content lists options to tune malloc()'s
 >> behaviour.  Alternatively -- or to influence an individual process
 >> only
 >> -- you could set the MALLOC_CONF environment variable.  A third option
 >> is to change the program's source and adjust a global _malloc_options
 >> variable in the process.
 >> 
 >> All of the above methods allow you to instruct malloc(3) to not just
 >> issue the message, but to abort() the process and generate a core dump
 >> so you can do a post mortem analysis and see what happened.
 >> 
 >> 
 >> virtually yours
 >> Gerhard Sittig
 >> --
 >> If you don't understand or are scared by any of the above
 >> ask your parents or an adult to help you.


-- 
Yours sincerely, Eugeny.
Doctor Web, Ltd. http://www.drweb.com