Hi Phil,

I close the thread handle at the same method where I launch it. It is just
that I felt I was already sending too much code... Here is it...

void CThreadApp::LaunchThread(DWORD cookie)
{
        m_cookie = cookie;

        // Launch thread
        HANDLE hThread = INVALID_HANDLE_VALUE;
        unsigned int nThreadId;

        hThread=(HANDLE)_beginthreadex(NULL, 0 ,
                                        (unsigned (__stdcall *) (void *)) &ThreadStub
                                        ,this ,0 ,&nThreadId);

        CloseHandle(hThread);
}

-----Original Message-----
From: Phil Reynolds

I don't think your problem has anything to do with COM or the GIT.

I don't see you closing the thread handle anywhere.

> -----Original Message-----
> From: Joan Ramon López Gillué [mailto:jrlopezVISIONADVANCE.COM]
> Sent: 03 October 2001 08:44
> To: DCOMDISCUSS.MICROSOFT.COM
> Subject: Re: [DCOM] leak in GetInterfaceFromGlobal
>
>
> Hi Zlatko,
>
> Here's the code for the thread procedure. I cannot see
> anything wrong in it,
> but may be you (or other) will.
>
> =============================================================
> unsigned long CThreadApp::Thread()
> {
> CoInitialize(NULL);
>
> // Register an interface in the GIT
> IGlobalInterfaceTable *piGIT=NULL;
> CoCreateInstance(CLSID_StdGlobalInterfaceTable, NULL,
> CLSCTX_INPROC_SERVER,
>
> IID_IGlobalInterfaceTable, (LPVOID*)&piGIT);
> IDummyComponent *piDummy=NULL;
> piGIT->GetInterfaceFromGlobal(m_cookie, __uuidof(piDummy),
> (void**)&piDummy);
>
> // Sleep for a while
> Sleep(100);
>
> if (piDummy) { piDummy->Release();}
> piGIT->Release();
>
> CoUninitialize();
>
> return 0;
> }
>
> ===========================================================
> ... and here is the main()
>
> int main(int argc, char* argv[])
> {
> CoInitialize(NULL);
>
> HRESULT hr=S_OK;
> CThreadApp app;
>
> // Create instance of dummy component
> IDummyComponent *piDummy=NULL;
> hr = CoCreateInstance(CLSID_DummyComponent, NULL,
> CLSCTX_INPROC_SERVER,
> IID_IDummyComponent,
> (void**)&piDummy);
> // Register an interface in the GIT
> IGlobalInterfaceTable *piGIT=NULL;
> DWORD cookie = 0;
> hr = CoCreateInstance(CLSID_StdGlobalInterfaceTable, NULL,
> CLSCTX_INPROC_SERVER,
>
> IID_IGlobalInterfaceTable, (LPVOID*)&piGIT);
> hr = piGIT->RegisterInterfaceInGlobal(piDummy,
> __uuidof(piDummy), &cookie);
> if (piDummy) piDummy->Release();
>
> // Start launching threads until key pressed
> cout << "Press any key to terminate..." << endl;
> while (!kbhit())
> {
> app.LaunchThread(cookie);
>
> MSG msg;
> while(PeekMessage(&msg,NULL,0,0,FALSE))
> {
> GetMessage(&msg,NULL,0,0);
> DispatchMessage(&msg);
> }
> Sleep(30);
> }
>
> cout << "Waiting for threads to terminate..." << endl;
> Sleep(3000); // Not too elegant, I know!
>
> piGIT->RevokeInterfaceFromGlobal(cookie);
> piGIT->Release();
>
> CoUninitialize();
>
> return 0;
> }
>
> ==================================================================
> ==================================================================
>
> -----Original Message-----
> From: Zlatko Michailov
>
> When you unmarshal from the GIT, you have a proxy created in
> your target
> apartment. How proxies are implemented, I don't know but they
> use memory for
> sure. The code of your ThreadProc might give us more
> information e.g. if you
> initialize the new threads as STA, then you definitely force the COM
> run-time to use your memory.
>
> Zlatko
>
>
> -----Original Message-----
> From: Distributed COM-Based Code [mailto:DCOMDISCUSS.MICROSOFT.COM]On
> Behalf Of Joan Ramon López Gillué
> Sent: Friday, September 28, 2001 7:30 AM
> To: DCOMDISCUSS.MICROSOFT.COM
> Subject: leak in GetInterfaceFromGlobal
>
>
> Hi all,
>
> I'm getting a strange memory leak when using
> GetInterfaceFromGlobal from a
> thread.
>
> Basically what I do is:
>
> 1. CoCreate a dummy component "A" and get its "Ia" interface.
>
> 2. Register interface "Ia" in the GIT with RegisterInterfaceInGlobal
>
> 3. while (!_kbhit) {
> Create a thread which gets "Ia" from the GIT and then
> releases it.
> MessageLoop;
> }
>
> ====================================
>
> When I execute the program the Task Manager shows how memory
> used by the
> process raises
> in blocks of 4Kb (sometimes 8Kb).
>
> If I comment out the line where I call
> "GetInterfaceFromGlobal" (and nothing
> else) the memory leak stops.
>
> Any hint about what I can be doing wrong?
>
> Thank a lot
>
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