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/* deb.c
*
* Copyright (c) 1991-1999, 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"
#define PERL_IN_DEB_C
#include "perl.h"
#if defined(PERL_IMPLICIT_CONTEXT)
void
Perl_deb_nocontext(const char *pat, ...)
{
#ifdef DEBUGGING
dTHX;
va_list args;
va_start(args, pat);
vdeb(pat, &args);
va_end(args);
#endif /* DEBUGGING */
}
#endif
void
Perl_deb(pTHX_ const char *pat, ...)
{
#ifdef DEBUGGING
va_list args;
va_start(args, pat);
vdeb(pat, &args);
va_end(args);
#endif /* DEBUGGING */
}
void
Perl_vdeb(pTHX_ const char *pat, va_list *args)
{
#ifdef DEBUGGING
dTHR;
register I32 i;
GV* gv = PL_curcop->cop_filegv;
#ifdef USE_THREADS
PerlIO_printf(Perl_debug_log, "0x%"UVxf" (%s:%ld)\t",
PTR2UV(thr),
SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>",
(long)PL_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 */
(void) PerlIO_vprintf(Perl_debug_log, pat, *args);
#endif /* DEBUGGING */
}
I32
Perl_debstackptrs(pTHX)
{
#ifdef DEBUGGING
dTHR;
PerlIO_printf(Perl_debug_log,
"%8"UVxf" %8"UVxf" %8"IVdf" %8"IVdf" %8"IVdf"\n",
PTR2UV(PL_curstack), PTR2UV(PL_stack_base),
(IV)*PL_markstack_ptr, (IV)(PL_stack_sp-PL_stack_base),
(IV)(PL_stack_max-PL_stack_base));
PerlIO_printf(Perl_debug_log,
"%8"UVxf" %8"UVxf" %8"UVuf" %8"UVuf" %8"UVuf"\n",
PTR2UV(PL_mainstack), PTR2UV(AvARRAY(PL_curstack)),
PTR2UV(PL_mainstack), PTR2UV(AvFILLp(PL_curstack)),
PTR2UV(AvMAX(PL_curstack)));
#endif /* DEBUGGING */
return 0;
}
I32
Perl_debstack(pTHX)
{
#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%"UVxf" => ... " : "0x%lx => ",
PTR2UV(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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