libguile/stackchk.c

   1 /*      Copyright (C) 1995,1996,1997, 2000, 2001, 2006, 2008, 2010, 2011, 2014 Free Software Foundation, Inc.
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public License
   5  * as published by the Free Software Foundation; either version 3 of
   6  * the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  16  * 02110-1301 USA
  17  */
  18
  19
  20 \f
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 #include "libguile/_scm.h"
  26 #include "libguile/ports.h"
  27 #include "libguile/root.h"
  28 #include "libguile/threads.h"
  29 #include "libguile/dynwind.h"
  30
  31 #include "libguile/stackchk.h"
  32 \f
  33
  34 /* {Stack Checking}
  35  */
  36
  37 int scm_stack_checking_enabled_p;
  38
  39 long
  40 scm_stack_size (SCM_STACKITEM *start)
  41 {
  42   SCM_STACKITEM stack;
  43 #if SCM_STACK_GROWS_UP
  44   return &stack - start;
  45 #else
  46   return start - &stack;
  47 #endif /* SCM_STACK_GROWS_UP */
  48 }
  49
  50
  51 void
  52 scm_stack_report ()
  53 {
  54   SCM port = scm_current_error_port ();
  55   SCM_STACKITEM stack;
  56   scm_i_thread *thread = SCM_I_CURRENT_THREAD;
  57
  58   scm_uintprint ((scm_stack_size (thread->continuation_base)
  59                   * sizeof (SCM_STACKITEM)),
  60                  16, port);
  61   scm_puts_unlocked (" of stack: 0x", port);
  62   scm_uintprint ((scm_t_bits) thread->continuation_base, 16, port);
  63   scm_puts_unlocked (" - 0x", port);
  64   scm_uintprint ((scm_t_bits) &stack, 16, port);
  65   scm_puts_unlocked ("\n", port);
  66 }
  67
  68
  69 SCM_DEFINE (scm_sys_get_stack_size, "%get-stack-size", 0, 0, 0,
  70             (),
  71             "Return the current thread's C stack size (in Scheme objects).")
  72 #define FUNC_NAME s_scm_sys_get_stack_size
  73 {
  74   return scm_from_long (scm_stack_size (SCM_I_CURRENT_THREAD->base));
  75 }
  76 #undef FUNC_NAME
  77
  78
  79 void
  80 scm_init_stackchk ()
  81 {
  82 #include "libguile/stackchk.x"
  83 }
  84
  85 /*
  86   Local Variables:
  87   c-file-style: "gnu"
  88   End:
  89 */