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 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
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but 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 02110-1301 USA
  21  */
  22
  23 \f
  24
  25 #include "libguile/__scm.h"
  26
  27 #include "libguile/continuations.h"
  28 #include "libguile/debug.h"
  29
  30 \f
  31
  32 /* With debug options we have the possibility to disable stack checking.
  33  */
  34 #define SCM_STACK_CHECKING_P SCM_STACK_LIMIT
  35
  36 #ifdef STACK_CHECKING
  37 # if SCM_STACK_GROWS_UP
  38 #  define SCM_STACK_OVERFLOW_P(s)\
  39    (SCM_STACK_PTR (s) \
  40     > (SCM_I_CURRENT_THREAD->base + SCM_STACK_LIMIT))
  41 # else
  42 #  define SCM_STACK_OVERFLOW_P(s)\
  43    (SCM_STACK_PTR (s) \
  44     < (SCM_I_CURRENT_THREAD->base - 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 /* STACK_CHECKING */
  55
  56 SCM_API int scm_stack_checking_enabled_p;
  57
  58 \f
  59
  60 SCM_API void scm_report_stack_overflow (void);
  61 SCM_API long scm_stack_size (SCM_STACKITEM *start);
  62 SCM_API void scm_stack_report (void);
  63 SCM_API SCM scm_sys_get_stack_size (void);
  64 SCM_INTERNAL void scm_init_stackchk (void);
  65
  66 #endif  /* SCM_STACKCHK_H */
  67
  68 /*
  69   Local Variables:
  70   c-file-style: "gnu"
  71   End:
  72 */