如何在BeagleBoard上的Angstrom Linux上启动时运行C ++ PortAudio应用程序？

xooky_nabox -audioindev 1 -audiooutdev 1 /var/xooky/patch.pd

xooky_nabox -audioindev 1 -audiooutdev 1 /var/xooky/patch.pd &

void sighandler(int signum){
  time_t rawtime;
  time(&rawtime);

  std::ofstream myfile;
  myfile.open (\"log.txt\",std::ios::app);
  myfile << ctime(&rawtime) << \"   Caught signal:\" << signum << \" \" << strsignal(signum) << \"\\n\";
  myfile.close();
  if(signum == 15 || signum == 2){
     exit(0);
  }
}


int main (int argc, char *argv[]) {
   // Subscribe to all system signals for debugging purposes.
   for(int i=0; i<64; i++){
      signal(i, sighandler);
   }   

   // Sanity checks, error and help messages, etc.
   parseParameters(argc, argv);

   //Start Signal processing and Audio
   initZenGarden();
   initAudioIO();

   // Keep the program alive.
   while(1){
      sleep(10);
   }

   // This is obviously never reached, so far no problems with that...
   stopAudioIO();
   stopZengarden();

   return 0;
}

static int paCallback( const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo* timeInfo, PaStreamCallbackFlags statusFlags, void *userData ){
   // This is called by PortAudio when the output buffer is about to run dry.
}

void go_daemon(){
   // Run the program as a daemon.
   pid_t pid, sid;
   pid = fork(); // Fork off the parent process
   if (pid < 0) {
      exit(EXIT_FAILURE);
   }
   if (pid > 0) {
      exit(EXIT_SUCCESS); // If child process started ok, exit the parent process
   }
   umask(0); // Change file mode mask

   sid = setsid(); // Create a new session ID for the child process
   if (sid < 0) {
      // TODO: Log failure
      exit(EXIT_FAILURE);
   }

   if((chdir(\"/\")) < 0){ //Change the working directory to \"/\"
      //TODO: Log failre
      exit(EXIT_FAILURE);
   }

   close(STDIN_FILENO);
   close(STDOUT_FILENO);
   close(STDERR_FILENO);
}

int main (int argc, char *argv[]) {
   go_daemon();      

   // Subscribe to all system signals for debugging purposes.
   for(int i=0; i<64; i++){
      signal(i, sighandler);
   }   

   // Sanity checks, error and help messages, etc.
   parseParameters(argc, argv);

   //Start Signal processing and Audio
   initZenGarden();
   initAudioIO();

   // Keep the program alive.
   while(1){
      sleep(10);
   }

   // This is obviously never reached, so far no problems with that...
   stopAudioIO();
   stopZengarden();

   return 0;
}

@reboot   xooky_nabox <params> &

@reboot start-stop-daemon -S -b --user daemon -n xooky_nabox -a /usr/bin/xooky_nabox -- <params>

$chmod +x xooky
$update-rc.d xooky defaults

Mon Jun  6 02:44:49 2011 Caught signal:18 Continued
Mon Jun  6 02:44:49 2011 Caught signal:15 Terminated