libguile/mallocs.c

   1 /* classes: src_files
   2  *      Copyright (C) 1995, 1997, 1998 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 "_scm.h"
  27 #include "ports.h"
  28 #include "smob.h"
  29
  30 #include "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
  42
  43
  44 static scm_sizet
  45 fmalloc(SCM ptr)
  46 {
  47   if (SCM_MALLOCDATA (ptr))
  48     free (SCM_MALLOCDATA (ptr));
  49   return 0;
  50 }
  51
  52
  53 static int
  54 prinmalloc (SCM exp,SCM port,scm_print_state *pstate)
  55 {
  56   scm_puts("#<malloc ", port);
  57   scm_intprint((int) SCM_CDR(exp), 16, port);
  58   scm_putc('>', port);
  59   return 1;
  60 }
  61
  62 \f
  63 int scm_tc16_malloc;
  64 \f
  65
  66
  67 SCM
  68 scm_malloc_obj (scm_sizet n)
  69 {
  70   SCM mem;
  71
  72   mem = (n
  73          ? (SCM)malloc (n)
  74          : 0);
  75   if (n && !mem)
  76     {
  77       SCM_ALLOW_INTS;
  78       return SCM_BOOL_F;
  79     }
  80   SCM_RETURN_NEWSMOB (scm_tc16_malloc, mem);
  81 }
  82
  83
  84 \f
  85
  86 void
  87 scm_init_mallocs ()
  88 {
  89   scm_tc16_malloc = scm_make_smob_type_mfpe ("malloc", 0,
  90                                             NULL, fmalloc, prinmalloc, NULL);
  91 }
  92
  93 /*
  94   Local Variables:
  95   c-file-style: "gnu"
  96   End:
  97 */