# include "pantasks.h"

# define opihi_name "pantasks"
# define opihi_prompt "pantasks: "
# define opihi_description "parallel task scheduler\n"
# define opihi_history ".pantasks"
# define opihi_rcfile ".pantasksrc"

/* program-dependent initialization */
void program_init (int *argc, char **argv) {
  
  pthread_t jobsThread;
  pthread_t tasksThread;
  pthread_t controllerThread;

  auto_break = TRUE;

  /* load the commands used by this implementation */
  InitBasic ();
  InitData ();
  InitPantasks ();

  rl_readline_name = opihi_name;
  rl_attempted_completion_function = command_completer;
  rl_event_hook = NULL;
  rl_set_keyboard_input_timeout (1000); 

  set_str_variable ("HISTORY", opihi_history);
  set_str_variable ("PROMPT", opihi_prompt);
  set_str_variable ("RCFILE", opihi_rcfile);

# ifdef DATADIR_DEFAULT
  { 
    char *datadir;
    char *helpdir;
    char *modules;
    datadir = MACRO_NAME(DATADIR_DEFAULT);
    /* set_str_variable ("DATADIR", datadir); */
    ALLOCATE (helpdir, char, strlen(datadir) + strlen("/help") + 2);
    sprintf (helpdir, "%s/help", datadir);
    set_str_variable ("HELPDIR", helpdir);
    free (helpdir);
    ALLOCATE (modules, char, strlen(datadir) + strlen("/modules") + 2);
    sprintf (modules, "%s/modules", datadir);
    set_str_variable ("MODULES:0", modules);
    set_int_variable ("MODULES:n", 1);
    free (modules);
  }
# endif

  signal (SIGPIPE, gotsignal);
  signal (SIGTSTP, gotsignal);
  signal (SIGTTIN, gotsignal);

  /* start up the background threads here */
  pthread_create (&tasksThread,      NULL, &CheckTasksThread, 	   NULL);
  pthread_create (&jobsThread,       NULL, &CheckJobsThread, 	   NULL);
  pthread_create (&controllerThread, NULL, &CheckControllerThread, NULL);
  return;
}

/* standard welcome message */
void welcome () {
  gprint (GP_LOG, "\n");
  gprint (GP_LOG, "Welcome to %s - %s\n\n", opihi_name, opihi_description);
}

/* add program-dependent exit functions here */
void cleanup () {
  QuitImage ();
  QuitGraph ();
  QuitController ();
  return;
}

void gotsignal (int signum) {
  gprint (GP_ERR, "got signal : %d\n", signum);
  return;
}

/* call to opihi shell */
int main (int argc, char **argv) {
  int status;
  status = opihi (argc, argv);
  exit (status);
}

/* pantasks runs three (or four) threads:
   - one thread parses commands from the connected clients
   - one thread runs the scheduler loop
   - one thread may run the controller loop independently
   - the main thread runs readline and accepts user input
*/
