libguile/stackchk.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_STACKCHK_H
   4 #define SCM_STACKCHK_H
   5
   6 /* Copyright (C) 1995,1996,1998,2000, 2003, 2006, 2008, 2009, 2010, 2011, 2014 Free Software Foundation, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; either version 3 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  */
  23
  24 \f
  25
  26 #include "libguile/__scm.h"
  27
  28 #include "libguile/continuations.h"
  29 #include "libguile/debug.h"
  30
  31 \f
  32
  33 /* With debug options we have the possibility to disable stack checking.
  34  */
  35 #define SCM_STACK_CHECKING_P SCM_STACK_LIMIT
  36
  37 #if defined BUILDING_LIBGUILE
  38 #include "libguile/private-options.h"
  39 # if SCM_STACK_GROWS_UP
  40 #  define SCM_STACK_OVERFLOW_P(s)\
  41    ((SCM_STACK_PTR (s) - SCM_I_CURRENT_THREAD->base) > SCM_STACK_LIMIT)
  42 # else
  43 #  define SCM_STACK_OVERFLOW_P(s)\
  44    ((SCM_I_CURRENT_THREAD->base - SCM_STACK_PTR (s)) > SCM_STACK_LIMIT)
  45 # endif
  46 # define SCM_CHECK_STACK\
  47     {\
  48        SCM_STACKITEM stack;\
  49        if (SCM_STACK_OVERFLOW_P (&stack) && scm_stack_checking_enabled_p)\
  50          scm_report_stack_overflow ();\
  51     }
  52 #else
  53 # define SCM_CHECK_STACK /**/
  54 #endif
  55
  56 SCM_API int scm_stack_checking_enabled_p;
  57
  58 \f
  59
  60 SCM_API long scm_stack_size (SCM_STACKITEM *start);
  61 SCM_API void scm_stack_report (void);
  62 SCM_API SCM scm_sys_get_stack_size (void);
  63 SCM_INTERNAL void scm_init_stackchk (void);
  64
  65 #endif  /* SCM_STACKCHK_H */
  66
  67 /*
  68   Local Variables:
  69   c-file-style: "gnu"
  70   End:
  71 */