libguile/mallocs.c

   1 /* classes: src_files
   2  *      Copyright (C) 1995, 1997, 1998, 2000 Free Software Foundation, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2, or (at your option)
   7  * any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this software; see the file COPYING.  If not, write to
  16  * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  17  * Boston, MA 02111-1307 USA */
  18
  19 /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
  20    gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
  21
  22
  23 \f
  24
  25 #include "libguile/_scm.h"
  26 #include "libguile/ports.h"
  27 #include "libguile/smob.h"
  28
  29 #include "libguile/mallocs.h"
  30
  31 #ifdef HAVE_MALLOC_H
  32 #include <malloc.h>
  33 #endif
  34 #ifdef HAVE_UNISTD_H
  35 #include <unistd.h>
  36 #endif
  37
  38
  39 \f
  40 scm_bits_t scm_tc16_malloc;
  41
  42
  43 static scm_sizet
  44 malloc_free (SCM ptr)
  45 {
  46   if (SCM_MALLOCDATA (ptr))
  47     free (SCM_MALLOCDATA (ptr));
  48   return 0;
  49 }
  50
  51
  52 static int
  53 malloc_print (SCM exp, SCM port, scm_print_state *pstate)
  54 {
  55   scm_puts("#<malloc ", port);
  56   scm_intprint (SCM_CELL_WORD_1 (exp), 16, port);
  57   scm_putc('>', port);
  58   return 1;
  59 }
  60
  61 \f
  62 SCM
  63 scm_malloc_obj (scm_sizet n)
  64 {
  65   scm_bits_t mem = n ? (scm_bits_t) malloc (n) : 0;
  66   if (n && !mem)
  67     {
  68       SCM_ALLOW_INTS;
  69       return SCM_BOOL_F;
  70     }
  71   SCM_RETURN_NEWSMOB (scm_tc16_malloc, mem);
  72 }
  73
  74
  75 \f
  76 void
  77 scm_init_mallocs ()
  78 {
  79   scm_tc16_malloc = scm_make_smob_type ("malloc", 0);
  80   scm_set_smob_free (scm_tc16_malloc, malloc_free);
  81   scm_set_smob_print (scm_tc16_malloc, malloc_print);
  82 }
  83
  84 /*
  85   Local Variables:
  86   c-file-style: "gnu"
  87   End:
  88 */