void InstallNewSigChldHandler()
{        
    struct sigaction act;
    struct sigaction oldAct;
    extern MainWindow * _mainWindow;
    
    /* Assign sig_chld as our SIGCHLD handler */
    act.sa_handler = CallWaitChildProcess;
    act.sa_flags = SA_NOCLDSTOP;

    if (sigaction(SIGCHLD, &act, &oldAct) < 0) 
    {
        traceLog("%s.%d:ERROR INSTALLING SIGCHLD HANDLER:sigaction FAILED",__SNFILE__, __LINE__);
        return;
    }
    _mainWindow->SetSigChldInstalled(true);    
}

void CallWaitChildProcess(int signo) 
{          
    int status, child_val, errStatus;
    extern MainWindow * _mainWindow;


    pid_t retPid;
    retPid=waitpid(g_ChildProcessPid, &status, WNOHANG);
    errStatus=errno;
    if (retPid < 0) 
    {
        traceLog("waitpid failed.Error cause:%s",strerror(errStatus));
        return;
    }

    if(retPid==0)
    {
        traceLog("waitpid returned 0");
        return;
    }


    if (WIFEXITED(status))                /* did child exit normally? */
    {
        child_val = WEXITSTATUS(status); /* get child's exit status */
        traceLog("process pid:%d --> ended normally with value %d\n", g_ChildProcessPid,child_val);
        
       if(true==_mainWindow->GetRecordingON())
       {
           _mainWindow->OnRecorderFinished(child_val);
           return;
       }
    }
}