fuse-devel

[fuse-devel] Lines of code being executed over and over again

[Vlad C. <Vla...@ma...>]

Hi,
 
I'm trying to get a feel for how Fuse works by debugging the sample 
"hello.c" program provided on your website. I compiled it and fuse-2.5.3 
using the "-g" option, and I'm running the "hello" executable in the 
Eclipse debugger.
 
Strangely, it seems that some lines of code are being executed over and 
over again. For example, the debugger goes to line 322, then to line 
321, then to line 322, then to line 321, then to line 322 in helper.c 
before finally going to line 258. Later on, there are other instances 
where this type of repetition occurs (ie. in helper.c: line 142, then 
line 138, then line 142, then line 138, then line 142, etc).
 
I recorded a 5-minute screen-capture video showing how the same lines of 
code are being repeatedly executed:
 
http://www.angelfire.com/ex2/foss/fuse/fuse_debug.html
 
Is this behavior a bug, is it an artifact of debugging, or am I just 
doing something wrong?
 
Thanks for your help,
Vlad

Re: [fuse-devel] Lines of code being executed over and over again

[Mattias W. <ma...@su...>]

Try to compile without optimization, -O0 or no -O flag at all.

-Mattias

Vlad Codrea wrote:
> Hi,
>  
> I'm trying to get a feel for how Fuse works by debugging the sample 
> "hello.c" program provided on your website. I compiled it and fuse-2.5.3 
> using the "-g" option, and I'm running the "hello" executable in the 
> Eclipse debugger.
>  
> Strangely, it seems that some lines of code are being executed over and 
> over again. For example, the debugger goes to line 322, then to line 
> 321, then to line 322, then to line 321, then to line 322 in helper.c 
> before finally going to line 258. Later on, there are other instances 
> where this type of repetition occurs (ie. in helper.c: line 142, then 
> line 138, then line 142, then line 138, then line 142, etc).
>  
> I recorded a 5-minute screen-capture video showing how the same lines of 
> code are being repeatedly executed:
>  
> http://www.angelfire.com/ex2/foss/fuse/fuse_debug.html
>  
> Is this behavior a bug, is it an artifact of debugging, or am I just 
> doing something wrong?
>  
> Thanks for your help,
> Vlad
> 
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Re: [fuse-devel] Lines of code being executed over and over again

[Vlad C. <Vla...@ma...>]

Mattias Wadman wrote:
> Try to compile without optimization, -O0 or no -O flag at all.
>
>

I deleted the old fuse-2.5.3 directory and unpacked fuse-2.5.3.tar.gz. 
After removing the "-O2" from configure.in, and then running ./configure 
and ./make, I get the following error:
 
libtool: Version mismatch error.  This is libtool 1.5a, but the
libtool: definition of this AC_PROG_LIBTOOL comes from an older release.
libtool: You should recreate aclocal.m4 with macros from libtool 1.5a
libtool: and run autoconf again.
 
Someone else has previously reported this error 
(http://sourceforge.net/mailarchive/forum.php?thread_id=9109011&forum_id=42692), 
and the proposed solution was to run a script called 'makeconf.sh' or to 
run 'autoreconf'.  'makeconf.sh' doesn't seem to exist, and running 
'autoreconf' doesn't get rid of the error.
 
I'd like to point out that if I don't modify configure.in, everything 
compiles.
 
Any ideas?
 
Thanks,
Vlad

Re: [fuse-devel] Lines of code being executed over and over again

[Mattias W. <ma...@su...>]

Vlad Codrea wrote:
> Mattias Wadman wrote:
>> Try to compile without optimization, -O0 or no -O flag at all.
>>
>>
> 
> I deleted the old fuse-2.5.3 directory and unpacked fuse-2.5.3.tar.gz. 
> After removing the "-O2" from configure.in, and then running ./configure 
> and ./make, I get the following error:
> 
> libtool: Version mismatch error.  This is libtool 1.5a, but the
> libtool: definition of this AC_PROG_LIBTOOL comes from an older release.
> libtool: You should recreate aclocal.m4 with macros from libtool 1.5a
> libtool: and run autoconf again.

If you edit configure.in and run make the Makefile will try to 
regenerate the configure script by running autoconf, you probably need 
"good" and compatible versions of autoconf, automake and libtool to make 
it work, it's usualy quite messy :)

> Someone else has previously reported this error 
> (http://sourceforge.net/mailarchive/forum.php?thread_id=9109011&forum_id=42692), 
> and the proposed solution was to run a script called 'makeconf.sh' or to 
> run 'autoreconf'.  'makeconf.sh' doesn't seem to exist, and running 
> 'autoreconf' doesn't get rid of the error.

If you checkout fuse from CVS there is a makeconf.sh script, it's not 
included when doing a .tar.gz distribution. But usualy it just runs 
autoconf and does some other things, so you will probably get the same 
error.

> I'd like to point out that if I don't modify configure.in, everything 
> compiles.
> 
> Any ideas?

Yes, run ./configure CFLAGS="-Wall -W -g -O0"

-Mattias

Re: [fuse-devel] Lines of code being executed over and over again

[Vlad C. <Vla...@ma...>]

Mattias Wadman wrote:
> Vlad Codrea wrote:
>> Mattias Wadman wrote:
>>> Try to compile without optimization, -O0 or no -O flag at all.
>>>
>>>
>>
>> I deleted the old fuse-2.5.3 directory and unpacked 
>> fuse-2.5.3.tar.gz. After removing the "-O2" from configure.in, and 
>> then running ./configure and ./make, I get the following error:
>>
>> libtool: Version mismatch error.  This is libtool 1.5a, but the
>> libtool: definition of this AC_PROG_LIBTOOL comes from an older release.
>> libtool: You should recreate aclocal.m4 with macros from libtool 1.5a
>> libtool: and run autoconf again.
>
> If you edit configure.in and run make the Makefile will try to 
> regenerate the configure script by running autoconf, you probably need 
> "good" and compatible versions of autoconf, automake and libtool to 
> make it work, it's usualy quite messy :)
>
>> Someone else has previously reported this error 
>> (http://sourceforge.net/mailarchive/forum.php?thread_id=9109011&forum_id=42692), 
>> and the proposed solution was to run a script called 'makeconf.sh' or 
>> to run 'autoreconf'.  'makeconf.sh' doesn't seem to exist, and 
>> running 'autoreconf' doesn't get rid of the error.
>
> If you checkout fuse from CVS there is a makeconf.sh script, it's not 
> included when doing a .tar.gz distribution. But usualy it just runs 
> autoconf and does some other things, so you will probably get the same 
> error.
>
>> I'd like to point out that if I don't modify configure.in, everything 
>> compiles.
>>
>> Any ideas?
>
> Yes, run ./configure CFLAGS="-Wall -W -g -O0"
>

Fuse compiles now, and using "-O0" solved the debugging problem. Thank 
you very much for your help!
 
Vlad