memory leak

[litaotao06051124]

Hello, I will use the following code to make multi-threaded concurrent calls: void Wmi::query(const string& q, const string& p, WmiResult &out) { CoInitializeEx(0, COINIT_MULTITHREADED); ULONG refCnt = 0; LOGI("Wmi::query(" << q << ", " << p << ")"); IWbemLocator pLocator = NULL; IWbemServices pServices = NULL; IEnumWbemClassObject pClassObject = NULL; //Create the WBEM locator try { pLocator = createWbemLocator(); } catch (const WmiException &) { LOGI("createWbemLocator exception! "); CoUninitialize(); throw; } //Open connection to computer try { pServices = connect(pLocator, p); } catch (WmiException &) { LOGI("connect exception! "); if (pServices) { refCnt = pServices->Release(); LOGI("pServices Release count: " << refCnt); } refCnt = pLocator->Release(); LOGI("pLocator Release count: " << refCnt); CoUninitialize(); throw; } //Execute the query try { pClassObject = execute(pServices, q); } catch (WmiException &) { LOGI("execute exception! "); if (pClassObject) { refCnt = pClassObject->Release(); LOGI("pClassObject Release count: " << refCnt); } refCnt = pServices->Release(); LOGI("pServices Release count: " << refCnt); refCnt = pLocator->Release(); LOGI("pLocator Release count: " << refCnt); CoUninitialize(); throw; } if (NULL == pClassObject) { LOGI("pClassObject is null! "); refCnt = pServices->Release(); LOGI("pServices Release count: " << refCnt); refCnt = pLocator->Release(); LOGI("pLocator Release count: " << refCnt); CoUninitialize(); throw; } try { std::size_t index = 0; foreachObject(pClassObject, [&out,&index](IWbemClassObject object) { foreachProperty(object, [&out,index](const wstring &name, const std::wstring &value) { out.set(index,name, value); return true; }); index++; return true; }); } catch (WmiException &) { LOGI("foreachObject exception! "); refCnt = pClassObject->Release(); LOGI("pClassObject Release count: " << refCnt); refCnt = pServices->Release(); LOGI("pServices Release count: " << refCnt); refCnt = pLocator->Release(); LOGI("pLocator Release count: " << refCnt); CoUninitialize(); throw; }

refCnt = pClassObject->Release(); LOGI("pClassObject Release count: " << refCnt); refCnt = pServices->Release(); LOGI("pServices Release count: " << refCnt); refCnt = pLocator->Release(); LOGI("pLocator Release count: " << refCnt); CoUninitialize(); } Thread 1 calls every 2 seconds: Win32.ComputerSystem computer=retrieveWmi(); Thread 2 calls every 2 seconds: Win32.ComputerSystemProduct product=retrieveWmi(); Thread 3 calls every 2 seconds: Wins2OperatingSystem os_info=retrieveWmi(); Discovered a memory leak in the program