/* block/init_source.c

 * 

 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007, 2009 Gerard Jungman, Brian Gough

 * 

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 3 of the License, or (at

 * your option) any later version.

 * 

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 */

TYPE (gsl_block) *

FUNCTION (gsl_block, alloc) (const size_t n)

{

  TYPE (gsl_block) * b;

  b = (TYPE (gsl_block) *) malloc (sizeof (TYPE (gsl_block)));

  if (b == 0)

    {

      GSL_ERROR_VAL ("failed to allocate space for block struct",

                        GSL_ENOMEM, 0);

    }

  b->data = (ATOMIC *) malloc (MULTIPLICITY * n * sizeof (ATOMIC));

  if (b->data == 0 && n > 0) /* malloc may return NULL when n == 0 */

    {

      free (b);         /* exception in constructor, avoid memory leak */

      GSL_ERROR_VAL ("failed to allocate space for block data",

                        GSL_ENOMEM, 0);

    }

  b->size = n;

  return b;

}

TYPE (gsl_block) *

FUNCTION (gsl_block, calloc) (const size_t n)

{

  size_t i;

  TYPE (gsl_block) * b = FUNCTION (gsl_block, alloc) (n);

  if (b == 0)

    return 0;

  /* initialize block to zero; the memset call takes care of padding bytes */

  memset(b->data, 0, MULTIPLICITY * n * sizeof(ATOMIC));

  for (i = 0; i < MULTIPLICITY * n; i++)

    {

      b->data[i] = 0;

    }

  return b;

}

void

FUNCTION (gsl_block, free) (TYPE (gsl_block) * b)

{

  RETURN_IF_NULL (b);

  free (b->data);

  free (b);

}