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107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/* classes: h_files */
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#ifndef STACKCHKH
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#define STACKCHKH
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/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*/
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#include "libguile/__scm.h"
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#include "libguile/continuations.h"
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#ifdef DEBUG_EXTENSIONS
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#include "libguile/debug.h"
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#endif
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/* With debug extensions we have the possibility to use the debug options
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* to disable stack checking.
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*/
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#ifdef DEBUG_EXTENSIONS
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#define SCM_STACK_CHECKING_P SCM_STACK_LIMIT
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#else
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/* *fixme* This option should be settable also without debug extensions. */
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#define SCM_STACK_LIMIT 100000
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#define SCM_STACK_CHECKING_P 1
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#endif
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#ifdef STACK_CHECKING
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# ifdef SCM_STACK_GROWS_UP
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# define SCM_STACK_OVERFLOW_P(s)\
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(s - SCM_BASE (scm_rootcont) > SCM_STACK_LIMIT * sizeof (SCM_STACKITEM))
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# else
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# define SCM_STACK_OVERFLOW_P(s)\
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(SCM_BASE (scm_rootcont) - s > SCM_STACK_LIMIT * sizeof (SCM_STACKITEM))
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# endif
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# define SCM_CHECK_STACK\
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{\
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SCM_STACKITEM stack;\
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if (SCM_STACK_OVERFLOW_P (&stack) && scm_stack_checking_enabled_p)\
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scm_report_stack_overflow ();\
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}
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#else
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# define SCM_CHECK_STACK /**/
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#endif /* STACK_CHECKING */
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extern int scm_stack_checking_enabled_p;
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#ifdef __STDC__
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extern void scm_report_stack_overflow (void);
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extern long scm_stack_size (SCM_STACKITEM *start);
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extern void scm_stack_report (void);
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extern void scm_init_stackchk (void);
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#else /* STDC */
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extern void scm_report_stack_overflow ();
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extern long scm_stack_size ();
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extern void scm_stack_report ();
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extern void scm_init_stackchk ();
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#endif /* STDC */
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#endif /* STACKCHKH */
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