libguile/mallocs.c

   1 /* classes: src_files
   2  * Copyright (C) 1995,1997,1998,2000,2001, 2006 Free Software Foundation, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public License
   6  * as published by the Free Software Foundation; either version 3 of
   7  * the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301 USA
  18  */
  19
  20
  21
  22 \f
  23 #ifdef HAVE_CONFIG_H
  24 #  include <config.h>
  25 #endif
  26
  27 #include "libguile/_scm.h"
  28 #include "libguile/ports.h"
  29 #include "libguile/smob.h"
  30
  31 #include "libguile/mallocs.h"
  32
  33 #ifdef HAVE_MALLOC_H
  34 #include <malloc.h>
  35 #endif
  36 #ifdef HAVE_UNISTD_H
  37 #include <unistd.h>
  38 #endif
  39
  40
  41 \f
  42 scm_t_bits scm_tc16_malloc;
  43
  44
  45 static size_t
  46 malloc_free (SCM ptr)
  47 {
  48   if (SCM_MALLOCDATA (ptr))
  49     free (SCM_MALLOCDATA (ptr));
  50   return 0;
  51 }
  52
  53
  54 static int
  55 malloc_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
  56 {
  57   scm_puts("#<malloc ", port);
  58   scm_uintprint (SCM_SMOB_DATA (exp), 16, port);
  59   scm_putc('>', port);
  60   return 1;
  61 }
  62
  63 \f
  64 SCM
  65 scm_malloc_obj (size_t n)
  66 {
  67   scm_t_bits mem = n ? (scm_t_bits) scm_gc_malloc (n, "malloc smob") : 0;
  68   if (n && !mem)
  69     return SCM_BOOL_F;
  70   SCM_RETURN_NEWSMOB (scm_tc16_malloc, mem);
  71 }
  72
  73
  74 \f
  75 void
  76 scm_init_mallocs ()
  77 {
  78   scm_tc16_malloc = scm_make_smob_type ("malloc", 0);
  79   scm_set_smob_free (scm_tc16_malloc, malloc_free);
  80   scm_set_smob_print (scm_tc16_malloc, malloc_print);
  81 }
  82
  83 /*
  84   Local Variables:
  85   c-file-style: "gnu"
  86   End:
  87 */