Re: [Valgrind-users] Shared objects

[Nuno L. <nun...@sa...>]

Hi,

I had the very same problem because I was issuing a chroot() call before 
calling dlopen. If that is your case, well this is a known bug.
If not, check if you are *not* calling dlclose (or any error after dlclose 
won't have the symbols name).

Nuno


----- Original Message ----- 
From: "Jojy Varghese" <Joj...@sy...>
To: <val...@li...>
Sent: Thursday, March 29, 2007 10:53 PM
Subject: [Valgrind-users] Shared objects


Hi
    I am a Valgrind novice and was trying to track down memory lean in
our application. Now, we have a lot of shared libraries(in fact all our
modules are shared). According to the FAQ, we are required to NOT
unload(dlclose) the loaded modules before exit. Now, we dont close the
loaded module because we dont care since the process is dying anyways.
Given this scenario, should I still expect the memleak information
having lots of unresolved symbols? This is an example of the output from
the "memcheck" module.

==2448== 1,200 bytes in 60 blocks are still reachable in loss record 135
of 146
==2448==    at 0x401EC9C: operator new(unsigned)
(vg_replace_malloc.c:163)
==2448==    by 0x4B0BB49: ???
==2448==    by 0x807A23E:
iml::CComponentManager::CreateInstance(std::basic_string<wchar_t,
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&,
iml::IMKnown**) (CComponentManager.cpp:25)
==2448==    by 0x4AFFA99: ???
==2448==    by 0x4AFFC5B: ???
==2448==    by 0x4AFFC5B: ???
==2448==    by 0x4B00B5A: ???
==2448==    by 0x80765E4:
iml::BootstrapServiceManager(std::basic_string<wchar_t,
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&,
std::basic_string<wchar_t, std::char_traits<wchar_t>,
std::allocator<wchar_t> > const&, std::basic_string<wchar_t,
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)
(StartupShutdown.cpp:276)
==2448==    by 0x80700D2: wmain(int, wchar_t**) (VectrixMain.cpp:215)
==2448==    by 0x8070832: main (VectrixMain.cpp:140)



    As you can see, there are a lot of "???" which we would like to know
the value of. Is there any other thing I should be doing?

Other details:

OS: Fedora 5
Arch: Intel x86



thanks in advance