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 <stdio.h>
  26 #include "libguile/_scm.h"
  27 #include "libguile/ports.h"
  28 #include "libguile/smob.h"
  29
  30 #include "libguile/mallocs.h"
  31
  32 #ifdef HAVE_MALLOC_H
  33 #include <malloc.h>
  34 #endif
  35 #ifdef HAVE_UNISTD_H
  36 #include <unistd.h>
  37 #endif
  38
  39
  40 \f
  41 scm_bits_t scm_tc16_malloc;
  42
  43
  44 static scm_sizet
  45 malloc_free (SCM ptr)
  46 {
  47   if (SCM_MALLOCDATA (ptr))
  48     free (SCM_MALLOCDATA (ptr));
  49   return 0;
  50 }
  51
  52
  53 static int
  54 malloc_print (SCM exp, SCM port, scm_print_state *pstate)
  55 {
  56   scm_puts("#<malloc ", port);
  57   scm_intprint (SCM_CELL_WORD_1 (exp), 16, port);
  58   scm_putc('>', port);
  59   return 1;
  60 }
  61
  62 \f
  63 SCM
  64 scm_malloc_obj (scm_sizet n)
  65 {
  66   scm_bits_t mem = n ? (scm_bits_t) malloc (n) : 0;
  67   if (n && !mem)
  68     {
  69       SCM_ALLOW_INTS;
  70       return SCM_BOOL_F;
  71     }
  72   SCM_RETURN_NEWSMOB (scm_tc16_malloc, mem);
  73 }
  74
  75
  76 \f
  77 void
  78 scm_init_mallocs ()
  79 {
  80   scm_tc16_malloc = scm_make_smob_type ("malloc", 0);
  81   scm_set_smob_free (scm_tc16_malloc, malloc_free);
  82   scm_set_smob_print (scm_tc16_malloc, malloc_print);
  83 }
  84
  85 /*
  86   Local Variables:
  87   c-file-style: "gnu"
  88   End:
  89 */