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Diffstat (limited to 'libguile/stackchk.h')
-rw-r--r-- | libguile/stackchk.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/libguile/stackchk.h b/libguile/stackchk.h new file mode 100644 index 000000000..eb3c436a2 --- /dev/null +++ b/libguile/stackchk.h @@ -0,0 +1,90 @@ +/* classes: h_files */ + +#ifndef STACKCHKH +#define STACKCHKH +/* Copyright (C) 1995,1996 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, 675 Mass Ave, Cambridge, MA 02139, 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 "__scm.h" + + + +#ifdef SCM_STACK_LIMIT +# define SCM_STACK_CHECK +# ifdef SCM_STACK_GROWS_UP +# define SCM_STACK_OVERFLOW_P(s) (s - SCM_BASE (rootcont) > SCM_STACK_LIMIT * sizeof (SCM_STACKITEM)) +# else +# define SCM_STACK_OVERFLOW_P(s) (SCM_BASE (rootcont) - s > SCM_STACK_LIMIT * sizeof (SCM_STACKITEM)) +# endif +# define SCM_CHECK_STACK\ + {\ + SCM_STACKITEM stack;\ + if (SCM_STACK_OVERFLOW_P (&stack) && scm_check_stack_p)\ + scm_report_stack_overflow ();\ + } +#else +# define SCM_CHECK_STACK /**/ +#endif /* def SCM_STACK_LIMIT */ + + +extern int scm_check_stack_p; + + +#ifdef __STDC__ +extern long scm_stack_size (SCM_STACKITEM *start); +extern void scm_stack_report (void); +extern void scm_init_stackchk (void); + +#else /* STDC */ +extern long scm_stack_size (); +extern void scm_stack_report (); +extern void scm_init_stackchk (); + +#endif /* STDC */ + + + + + + + + +#endif /* STACKCHKH */ |