Question

I did select the executable correctly, because I can get it to respond to certain things I do. But I can’t get ApplicationVerifier to properly detect a handle leak.

Here is an example:

int APIENTRY _tWinMain(HINSTANCE hInstance,                      HINSTANCE hPrevInstance,                      LPTSTR    lpCmdLine,                      int       nCmdShow) {     HANDLE hFile = CreateFile(_T('C:\\test.txt'), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL);     return 0; } 

ApplicationVerifier doesn’t detect this.

What can I do to detect the above problem?

Answer 1

Is your code only creating handles through CreateFile? If so you can just macro these methods out to versions that do custom implemented leak detection. It’s a lot of work but it will get the job done.

#if DEBUG #define CreateFile DebugCreateFile #define CloseHandle DebugCloseHandle #endif // in another cpp file #undef CreateFile #undef CloseHandle HANDLE DebugCreateFile(...) {   HANDLE real = ::CreateFile(...);   TrackHandle(real);   return real; } void DebugCloseHandle(HANDLE target) {   if (IsTracked(target)) { Untrack(target); }   ::CloseHandle(target); } void CheckForLeaks() {   // Look for still registered handles } 

At the end of your program you’d need to call CheckForLeaks. Like I said though, quite a bit of work but it may help with your scenairo.