libguile/mallocs.c

   1 /* classes: src_files
   2  * Copyright (C) 1995,1997,1998,2000,2001 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  * As a special exception, the Free Software Foundation gives permission
  20  * for additional uses of the text contained in its release of GUILE.
  21  *
  22  * The exception is that, if you link the GUILE library with other files
  23  * to produce an executable, this does not by itself cause the
  24  * resulting executable to be covered by the GNU General Public License.
  25  * Your use of that executable is in no way restricted on account of
  26  * linking the GUILE library code into it.
  27  *
  28  * This exception does not however invalidate any other reasons why
  29  * the executable file might be covered by the GNU General Public License.
  30  *
  31  * This exception applies only to the code released by the
  32  * Free Software Foundation under the name GUILE.  If you copy
  33  * code from other Free Software Foundation releases into a copy of
  34  * GUILE, as the General Public License permits, the exception does
  35  * not apply to the code that you add in this way.  To avoid misleading
  36  * anyone as to the status of such modified files, you must delete
  37  * this exception notice from them.
  38  *
  39  * If you write modifications of your own for GUILE, it is your choice
  40  * whether to permit this exception to apply to your modifications.
  41  * If you do not wish that, delete this exception notice.  */
  42
  43
  44
  45 \f
  46
  47 #include "libguile/_scm.h"
  48 #include "libguile/ports.h"
  49 #include "libguile/smob.h"
  50
  51 #include "libguile/mallocs.h"
  52
  53 #ifdef HAVE_MALLOC_H
  54 #include <malloc.h>
  55 #endif
  56 #ifdef HAVE_UNISTD_H
  57 #include <unistd.h>
  58 #endif
  59
  60
  61 \f
  62 scm_t_bits scm_tc16_malloc;
  63
  64
  65 static size_t
  66 malloc_free (SCM ptr)
  67 {
  68   if (SCM_MALLOCDATA (ptr))
  69     free (SCM_MALLOCDATA (ptr));
  70   return 0;
  71 }
  72
  73
  74 static int
  75 malloc_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
  76 {
  77   scm_puts("#<malloc ", port);
  78   scm_intprint (SCM_CELL_WORD_1 (exp), 16, port);
  79   scm_putc('>', port);
  80   return 1;
  81 }
  82
  83 \f
  84 SCM
  85 scm_malloc_obj (size_t n)
  86 {
  87   scm_t_bits mem = n ? (scm_t_bits) malloc (n) : 0;
  88   if (n && !mem)
  89     return SCM_BOOL_F;
  90   SCM_RETURN_NEWSMOB (scm_tc16_malloc, mem);
  91 }
  92
  93
  94 \f
  95 void
  96 scm_init_mallocs ()
  97 {
  98   scm_tc16_malloc = scm_make_smob_type ("malloc", 0);
  99   scm_set_smob_free (scm_tc16_malloc, malloc_free);
 100   scm_set_smob_print (scm_tc16_malloc, malloc_print);
 101 }
 102
 103 /*
 104   Local Variables:
 105   c-file-style: "gnu"
 106   End:
 107 */