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/* classes: h_files */
#ifndef SCM_STACKCHK_H
#define SCM_STACKCHK_H
/* Copyright (C) 1995,1996,1998,2000 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
#include "libguile/__scm.h"
#include "libguile/continuations.h"
#ifdef DEBUG_EXTENSIONS
#include "libguile/debug.h"
#endif
/* With debug extensions we have the possibility to use the debug options
* to disable stack checking.
*/
#ifdef DEBUG_EXTENSIONS
#define SCM_STACK_CHECKING_P SCM_STACK_LIMIT
#else
/* *fixme* This option should be settable also without debug extensions. */
#define SCM_STACK_LIMIT 100000
#define SCM_STACK_CHECKING_P 1
#endif
#ifdef STACK_CHECKING
# ifdef SCM_STACK_GROWS_UP
# define SCM_STACK_OVERFLOW_P(s)\
(s > ((SCM_STACKITEM *) SCM_BASE (scm_rootcont) + SCM_STACK_LIMIT))
# else
# define SCM_STACK_OVERFLOW_P(s)\
(s < ((SCM_STACKITEM *) SCM_BASE (scm_rootcont) - SCM_STACK_LIMIT))
# endif
# define SCM_CHECK_STACK\
{\
SCM_STACKITEM stack;\
if (SCM_STACK_OVERFLOW_P (&stack) && scm_stack_checking_enabled_p)\
scm_report_stack_overflow ();\
}
#else
# define SCM_CHECK_STACK /**/
#endif /* STACK_CHECKING */
SCM_API int scm_stack_checking_enabled_p;
SCM_API void scm_report_stack_overflow (void);
SCM_API long scm_stack_size (SCM_STACKITEM *start);
SCM_API void scm_stack_report (void);
SCM_API void scm_init_stackchk (void);
#endif /* SCM_STACKCHK_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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