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/* deb.c
*
* Copyright (c) 1991-1997, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* "Didst thou think that the eyes of the White Tower were blind? Nay, I
* have seen more than thou knowest, Gray Fool." --Denethor
*/
#include "EXTERN.h"
#include "perl.h"
void
deb(const char *pat, ...)
{
#ifdef DEBUGGING
dTHR;
va_list args;
register I32 i;
GV* gv = PL_curcop->cop_filegv;
#ifdef USE_THREADS
PerlIO_printf(Perl_debug_log, "0x%lx (%s:%ld)\t",
(unsigned long) thr,
SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>",
(long)curcop->cop_line);
#else
PerlIO_printf(Perl_debug_log, "(%s:%ld)\t",
SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>",
(long)PL_curcop->cop_line);
#endif /* USE_THREADS */
for (i=0; i<PL_dlevel; i++)
PerlIO_printf(Perl_debug_log, "%c%c ",PL_debname[i],PL_debdelim[i]);
va_start(args, pat);
(void) PerlIO_vprintf(Perl_debug_log,pat,args);
va_end( args );
#endif /* DEBUGGING */
}
void
deb_growlevel(void)
{
#ifdef DEBUGGING
PL_dlmax += 128;
Renew(PL_debname, PL_dlmax, char);
Renew(PL_debdelim, PL_dlmax, char);
#endif /* DEBUGGING */
}
I32
debstackptrs(void)
{
#ifdef DEBUGGING
dTHR;
PerlIO_printf(Perl_debug_log, "%8lx %8lx %8ld %8ld %8ld\n",
(unsigned long)PL_curstack, (unsigned long)PL_stack_base,
(long)*PL_markstack_ptr, (long)(PL_stack_sp-PL_stack_base),
(long)(PL_stack_max-PL_stack_base));
PerlIO_printf(Perl_debug_log, "%8lx %8lx %8ld %8ld %8ld\n",
(unsigned long)PL_mainstack, (unsigned long)AvARRAY(PL_curstack),
(long)PL_mainstack, (long)AvFILLp(PL_curstack), (long)AvMAX(PL_curstack));
#endif /* DEBUGGING */
return 0;
}
I32
debstack(void)
{
#ifdef DEBUGGING
dTHR;
I32 top = PL_stack_sp - PL_stack_base;
register I32 i = top - 30;
I32 *markscan = PL_curstackinfo->si_markbase;
if (i < 0)
i = 0;
while (++markscan <= PL_markstack_ptr)
if (*markscan >= i)
break;
#ifdef USE_THREADS
PerlIO_printf(Perl_debug_log, i ? "0x%lx => ... " : "0x%lx => ",
(unsigned long) thr);
#else
PerlIO_printf(Perl_debug_log, i ? " => ... " : " => ");
#endif /* USE_THREADS */
if (PL_stack_base[0] != &PL_sv_undef || PL_stack_sp < PL_stack_base)
PerlIO_printf(Perl_debug_log, " [STACK UNDERFLOW!!!]\n");
do {
++i;
if (markscan <= PL_markstack_ptr && *markscan < i) {
do {
++markscan;
PerlIO_putc(Perl_debug_log, '*');
}
while (markscan <= PL_markstack_ptr && *markscan < i);
PerlIO_printf(Perl_debug_log, " ");
}
if (i > top)
break;
PerlIO_printf(Perl_debug_log, "%-4s ", SvPEEK(PL_stack_base[i]));
}
while (1);
PerlIO_printf(Perl_debug_log, "\n");
#endif /* DEBUGGING */
return 0;
}
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