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guile/libguile/stackchk.c
2003-04-05 19:15:35 +00:00

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/* Copyright (C) 1995,1996,1997, 2000, 2001 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "libguile/_scm.h"
#include "libguile/ports.h"
#include "libguile/root.h"
#include "libguile/stackchk.h"
/* {Stack Checking}
*/
#ifdef STACK_CHECKING
int scm_stack_checking_enabled_p;
SCM_SYMBOL (scm_stack_overflow_key, "stack-overflow");
void
scm_report_stack_overflow ()
{
scm_stack_checking_enabled_p = 0;
scm_error (scm_stack_overflow_key,
NULL,
"Stack overflow",
SCM_BOOL_F,
SCM_BOOL_F);
}
#endif
long
scm_stack_size (SCM_STACKITEM *start)
{
SCM_STACKITEM stack;
#if SCM_STACK_GROWS_UP
return &stack - start;
#else
return start - &stack;
#endif /* SCM_STACK_GROWS_UP */
}
void
scm_stack_report ()
{
SCM_STACKITEM stack;
scm_intprint (scm_stack_size (SCM_BASE (scm_rootcont)) * sizeof (SCM_STACKITEM),
16, scm_cur_errp);
scm_puts (" of stack: 0x", scm_cur_errp);
scm_intprint ((long) SCM_BASE (scm_rootcont), 16, scm_cur_errp);
scm_puts (" - 0x", scm_cur_errp);
scm_intprint ((long) &stack, 16, scm_cur_errp);
scm_puts ("\n", scm_cur_errp);
}
void
scm_init_stackchk ()
{
#include "libguile/stackchk.x"
}
/*
Local Variables:
c-file-style: "gnu"
End:
*/