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 /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
  44    gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
  45
  46
  47 \f
  48
  49 #include "libguile/_scm.h"
  50 #include "libguile/ports.h"
  51 #include "libguile/smob.h"
  52
  53 #include "libguile/mallocs.h"
  54
  55 #ifdef HAVE_MALLOC_H
  56 #include <malloc.h>
  57 #endif
  58 #ifdef HAVE_UNISTD_H
  59 #include <unistd.h>
  60 #endif
  61
  62
  63 \f
  64 scm_t_bits scm_tc16_malloc;
  65
  66
  67 static size_t
  68 malloc_free (SCM ptr)
  69 {
  70   if (SCM_MALLOCDATA (ptr))
  71     free (SCM_MALLOCDATA (ptr));
  72   return 0;
  73 }
  74
  75
  76 static int
  77 malloc_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
  78 {
  79   scm_puts("#<malloc ", port);
  80   scm_intprint (SCM_CELL_WORD_1 (exp), 16, port);
  81   scm_putc('>', port);
  82   return 1;
  83 }
  84
  85 \f
  86 SCM
  87 scm_malloc_obj (size_t n)
  88 {
  89   scm_t_bits mem = n ? (scm_t_bits) malloc (n) : 0;
  90   if (n && !mem)
  91     return SCM_BOOL_F;
  92   SCM_RETURN_NEWSMOB (scm_tc16_malloc, mem);
  93 }
  94
  95
  96 \f
  97 void
  98 scm_init_mallocs ()
  99 {
 100   scm_tc16_malloc = scm_make_smob_type ("malloc", 0);
 101   scm_set_smob_free (scm_tc16_malloc, malloc_free);
 102   scm_set_smob_print (scm_tc16_malloc, malloc_print);
 103 }
 104
 105 /*
 106   Local Variables:
 107   c-file-style: "gnu"
 108   End:
 109 */