Hi, my name is Smolenic Andrei and I am a Phd student at the Stefan cel
Mare University of Suceava, Romania. I've reached a point in my research
where I need to compare some CORBA implementations. I've chosen TAO and
MICO. First I've created a TAO based client-server distributed application
and all went well. At the moment I've come to a halt with the MICO
approach. Let me try to explain the problem.
Setup: Windows 7 64 bit / Visual Studio 2010 Ultimate.
I downloaded the MICO sources and built them using the VS compiler (nmake
/f Makefile.win32). All went well so far. Next i've created a console app
to test the connectivity with the naming service.
I've applied the following config to my project:
- added D:\mico\win32-bin and D:\mico\include to C/C++ ->Additional
Include Directories
- added D:\mico\win32-bin\lib to Linker->Additional Library Directories
- added mico2313.lib and micocoss2313.lib to Linker->Input
- i've compiled the classic account idl file and added the resulting
account.h /.cc to the project
- i've implemented the required servant
And the relevant piece of code:
#include "account.h"
#include "coss\CosNaming.h"
...
int main()
{
int argc = 4;
char* argv[4];
argv[0] = "server";
argv[1] = "-ORBNoResolve";
argv[2] = "-ORBInitRef";
argv[3] = "NameService=corbaloc::127.0.0.1:45678/NameService";
CORBA::ORB_var orb = CORBA::ORB_init (argc, argv);
CORBA::Object_var poaobj = orb->resolve_initial_references ("RootPOA");
PortableServer::POA_var poa = PortableServer::POA::_narrow (poaobj);
PortableServer::POAManager_var mgr = poa->the_POAManager();
PortableServer::Servant account_servant = new Account_impl;
CORBA::Object_var the_account = account_servant->_this();
CORBA::Object_var nsobj = orb->resolve_initial_references("NameService");
CosNaming::NamingContext_var nc=CosNaming::NamingContext::_narrow (nsobj);
CosNaming::Name name;
name.length (1);
name[0].id = CORBA::string_dup ("testname");
name[0].kind = CORBA::string_dup ("");
nc->rebind (name, the_account);
return 0;
}
The problem is that when the narrowing of nsobj to
CosNaming::NamingContext occurs an CORBA::INV_POLICY is raised (but just
in the VS output) and the execution moves on. Then when the rebinding
takes place i get "Access violation reading location 0xfdfdfdfd". It is my
belief that this access violation occurs because the naming service wasn't
properly resolved/narrowed in the first place, not being able to
bind/rebind to a 'fake' naming context.
I have searched around the web for a solution, i've documented myself
about the policies, about the exception itself but i have yet to find an
answer about what's going on.
I start the naming service daemon with the following command:
nsd -ORBNoResolve -ORBDebug All -ORBIIOPAddr inet:127.0.0.1:45678
Maybe if someone has the time to give me a hint I would greatly appreciate
it. Thanks,
Smolenic Andrei
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