libguile/mallocs.c

   1 /* classes: src_files */
   2
   3 /*      Copyright (C) 1995 Free Software Foundation, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2, or (at your option)
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software; see the file COPYING.  If not, write to
  17  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 \f
  21
  22 #include <stdio.h>
  23 #include "_scm.h"
  24 #include "mallocs.h"
  25 #ifdef HAVE_MALLOC_H
  26 #include <malloc.h>
  27 #endif
  28 #ifdef HAVE_UNISTD_H
  29 #include <unistd.h>
  30 #endif
  31
  32
  33 \f
  34
  35
  36 #ifdef __STDC__
  37 static scm_sizet
  38 fmalloc(SCM ptr)
  39 #else
  40 static scm_sizet
  41 fmalloc(ptr)
  42      SCM ptr;
  43 #endif
  44 {
  45   if (SCM_MALLOCDATA (ptr))
  46     free (SCM_MALLOCDATA (ptr));
  47   return 0;
  48 }
  49
  50 #ifdef __STDC__
  51 static int
  52 prinmalloc (SCM exp, SCM port, int writing)
  53 #else
  54 static int
  55 prinmalloc (exp, port, writing)
  56      SCM exp;
  57      SCM port;
  58      int writing;
  59 #endif
  60 {
  61   scm_gen_puts(scm_regular_string, "#<malloc ", port);
  62   scm_intprint(SCM_CDR(exp), 16, port);
  63   scm_gen_putc('>', port);
  64   return 1;
  65 }
  66
  67 \f
  68 int scm_tc16_malloc;
  69 static scm_smobfuns mallocsmob = {scm_mark0, fmalloc, prinmalloc, 0};
  70
  71 \f
  72
  73 #ifdef __STDC__
  74 SCM
  75 scm_malloc_obj (scm_sizet n)
  76 #else
  77 SCM
  78 scm_malloc_obj (n)
  79      scm_sizet n;
  80 #endif
  81 {
  82   SCM answer;
  83   SCM mem;
  84
  85   SCM_NEWCELL (answer);
  86   SCM_DEFER_INTS;
  87   mem = (n
  88          ? (SCM)malloc (n)
  89          : 0);
  90   if (n && !mem)
  91     {
  92       SCM_ALLOW_INTS;
  93       return SCM_BOOL_F;
  94     }
  95   SCM_CDR (answer) = mem;
  96   SCM_CAR (answer) = scm_tc16_malloc;
  97   SCM_ALLOW_INTS;
  98   return answer;
  99 }
 100
 101
 102 \f
 103 #ifdef __STDC__
 104 void
 105 scm_init_mallocs (void)
 106 #else
 107 void
 108 scm_init_mallocs ()
 109 #endif
 110 {
 111   scm_tc16_malloc = scm_newsmob (&mallocsmob);
 112 }
 113