/* This is sample program for Ninf-G, calculate PI on one server */
#include "grpc.h"

char *func_name   = "pi/pi_trial";
char *config_file = "client.conf";
int   port        = 0;

int main (int argc, char *argv[])
{
  grpc_function_handle_t handle;
  grpc_error_t           result = GRPC_NO_ERROR;
  char                 * host   = NULL;
  long                   times, answer;

  if ( argc != 3 )
  {
    fprintf (stderr, "USAGE: %s TIMES HOSTNAME\n", argv[0]);
    exit (2);
  }

  times = atol (argv[1]);
  host  = argv[2];

  /* Initialize */
  result = grpc_initialize (config_file);
  if ( result != GRPC_NO_ERROR ) 
  {
    fprintf (stderr, "grpc_initialize () error. (%s)\n",
             grpc_error_string (result));
    exit (2);
  }

  /* Initialize Function handle */
  result = grpc_function_handle_init (&handle, host, func_name);
  if ( result != GRPC_NO_ERROR ) 
  {
    fprintf (stderr, "grpc_function_handle_init() error. (%s)\n",
             grpc_error_string (result));
    exit (2);
  }

  /* Synchronous call */
  result = grpc_call (&handle, 0, times, &answer);
  if ( result != GRPC_NO_ERROR )
  {
    fprintf (stderr, "grpc_call() error. (%s)\n",
             grpc_error_string (result));
    exit (2);
  }

  /* Destruct Function handles */
  result = grpc_function_handle_destruct (&handle);
  if ( result != GRPC_NO_ERROR ) 
  {
    fprintf (stderr, "grpc_function_handle_destruct() error. (%s)\n",
             grpc_error_string (result));
    exit (2);
  }

  /* Compute and display pi. */
  printf ("PI = %f\n", 4.0 * ((double) answer / times));

  /* Finalize */
  result = grpc_finalize ();
  if ( result != GRPC_NO_ERROR ) 
  {
    fprintf (stderr, "grpc_finalize () error. (%s)\n",
             grpc_error_string (result));
    exit (2);
  }

  return (0);
}