threads cleanup?

[Alexander Kabaev]

On Thu, 24 Apr 2008 12:04:20 +0300
Krassimir Slavchev <krassi at bulinfo.net> wrote:

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> Hello,
> 
> Most probably I missed something.
> I have problems with threads cleanup. Here are output of valgrind and
> simple test program:
> 
> ...
> ==78317== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from
> 0) ==78317== malloc/free: in use at exit: 4108 bytes in 2 blocks.
> ==78317== malloc/free: 5 allocs, 3 frees, 4324 bytes allocated.
> ==78317==
> ==78317== searching for pointers to 2 not-freed blocks.
> ==78317== checked 1468040 bytes.
> ==78317==
> ==78317== 12 bytes in 1 blocks are still reachable in loss record 1
> of 2 ==78317==    at 0x3C038183: malloc (in
> /usr/local/lib/valgrind/vgpreload_memcheck.so)
> ==78317==    by 0x3C03F8D0:
> (within /usr/local/lib/valgrind/libthr.so.2) ==78317==    by
> 0x3C040F49: pthread_mutex_init
> (in /usr/local/lib/valgrind/libthr.so.2) ==78317==    by 0x3C040FA9:
> pthread_mutex_lock (in /usr/local/lib/valgrind/libthr.so.2)
> ==78317==
> ==78317==
> ==78317== 4096 bytes in 1 blocks are still reachable in loss record 2
> of 2 ==78317==    at 0x3C038183: malloc (in
> /usr/local/lib/valgrind/vgpreload_memcheck.so)
> ==78317==    by 0x3C121AE5: __smakebuf (in /lib/libc.so.6)
> ==78317==    by 0x3C1219B0: __swsetup (in /lib/libc.so.6)
> ==78317==    by 0x3C11789B: __vfprintf (in /lib/libc.so.6)
> ...

You definitely need deeper stacktrace to see where mutexes are
allocated. Info above says nothing otherwise.

Also, note that when running threaded programs under valgrind you are
testing valgrind's own threading library implementatiion, not 'real'
libthr.
-- 
Alexander Kabaev
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