static char rcsid[] = "$Id: get_thrdn006.c,v 1.4 2000/07/30 13:10:41 a-hasega Exp $";
/* 
 * $RWC_Release: Omni-1.6 $
 * $RWC_Copyright:
 *  Omni Compiler Software Version 1.5-1.6
 *  Copyright (C) 2002 PC Cluster Consortium
 *  
 *  This software is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License version
 *  2.1 published by the Free Software Foundation.
 *  
 *  Omni Compiler Software Version 1.0-1.4
 *  Copyright (C) 1999, 2000, 2001.
 *   Tsukuba Research Center, Real World Computing Partnership, Japan.
 *  
 *  Please check the Copyright and License information in the files named
 *  COPYRIGHT and LICENSE under the top  directory of the Omni Compiler
 *  Software release kit.
 *  
 *  
 *  $
 */
/* omp_get_thread_num : 006
 * serialize された nested parallel region での
 * omp_get_thread_num の動作を確認
 */

#include "omniConfig.h"
#include <string.h>
#include <omp.h>
#include "omni.h"


int
main ()
{
  int		thds, *buf, i, j, t;

  int		errors = 0;


  /* initialize */
  thds = omp_get_max_threads ();
  if (thds == 1) {
    printf ("should be run this program on multi threads.\n");	
    exit (0);
  }
  buf = (int *) malloc (sizeof(int) * (thds + 1));

  omp_set_dynamic (0);
  omp_set_nested (1);
  if (omp_get_nested() == 0) {
    printf ("nested parallelism is not suppport.\n");
    goto END;
  }


  for (i=1; i<=thds; i++) {

    memset (buf, 0, sizeof(int)*(thds+1));
    omp_set_num_threads (1);

    #pragma omp parallel
    {
      omp_set_num_threads (i);

      #pragma omp parallel
      {
	int	id = omp_get_thread_num ();
	buf[id] += 1;
      }
    }

    for (t=0, j=0; j<i; j++) {
      if (buf[j] != 0) {
	t ++;
      }
    }
    if (i != 1  &&  t == 1  &&  buf[0] == 1) {
      printf ("nested parallel region is serialized\n");
    } else {
      for (j=0; j<i; j++) {
	if (buf[j] != 1) {
	  errors += 1;
	}
      }
    }
    for (j=i; j<=thds; j++) {
      if (buf[j] != 0) {
	errors += 1;
      }
    }
  }


 END:
  if (errors == 0) {
    printf ("omp_get_thread_num 006 : SUCCESS\n");
    return 0;
  } else {
    printf ("omp_get_thread_num 006 : FAILED\n");
    return 1;
  }
}