CORBA::ORB_init leaking memory

Question

I have a project that uses TAO(CORBA)'s Naming Service for information exchange between different modules. However, I found that my implementation of the Naming Service caused memorys leak as detected by my memory leak detection software(Parasoft).

For testing purposes, I have created a small sample project.

int main (int argc, ACE_TCHAR ** const argv)
{
    std::cout << "start of main" << std::endl;

    CORBA::ORB_ptr myOrb = CORBA::ORB_init(argc, argv);
    CORBA::release(myOrb);
    myORB->destroy();

    std::cout << "end of main" << std::endl;
}

When I ran my memory leak detection software, it was discovered that the ORB_init is leaking memory. However, as can be seen form the sample code, all I did was to init an ORB, and release and destroy it immediately after. Are there any other steps to release the ORB allocated resources from within?

One of the leaks:

12 bytes 1 chunk allocated

malloc () (interface)

operator new()

CORBA::string_alloc() String_Alloc.cpp, 53

CORBA::string_dup() String_Alloc.cpp, 38

TAO_Default_Resource_Factory::get parser_names() default_resources.cpp, 590

TAO_Parser_Registry::open() Parser_Registry.cpp, 40

TAO_ORB_Core::init() /home/user/ACE_Wrappers/ace/Arg_Shifter.cpp, 1291

CORBA::ORB_init() ORB.cpp 1359

main() ..src/AlphaTest.cpp, 34

I only have control over src/AlphaTest.cpp, the rest are TAO files.

Johnny Willemsen Johnny Willemsen · Accepted Answer · 2019-07-25T06:18:48

The leak you show is from a global singleton, that is cleaned at process exit and doesn't increase memory during runtime. Very likely the issue is in your application code, you are very likely not using the CORBA IDL to C++ language mapping correctly. Your example code is not correct in that respect, it should be as following

int main (int argc, ACE_TCHAR * const argv[])
{
    std::cout << "start of main" << std::endl;

    CORBA::ORB_var myOrb = CORBA::ORB_init(argc, argv);
    myORB->destroy();

    std::cout << "end of main" << std::endl;
}

CORBA::ORB_init leaking memory

1 Answers