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/* deb.c
*
* Copyright (c) 1991-1994, 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"
#ifdef DEBUGGING
#if !defined(I_STDARG) && !defined(I_VARARGS)
/*
* Fallback on the old hackers way of doing varargs
*/
/*VARARGS1*/
void
deb(pat,a1,a2,a3,a4,a5,a6,a7,a8)
char *pat;
{
register I32 i;
GV* gv = curcop->cop_filegv;
fprintf(stderr,"(%s:%ld)\t",
SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>",
(long)curcop->cop_line);
for (i=0; i<dlevel; i++)
fprintf(stderr,"%c%c ",debname[i],debdelim[i]);
fprintf(stderr,pat,a1,a2,a3,a4,a5,a6,a7,a8);
}
#else /* !defined(I_STDARG) && !defined(I_VARARGS) */
# ifdef STANDARD_C
void
deb(char *pat, ...)
# else
/*VARARGS1*/
void
deb(pat, va_alist)
char *pat;
va_dcl
# endif
{
va_list args;
register I32 i;
GV* gv = curcop->cop_filegv;
fprintf(stderr,"(%s:%ld)\t",
SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>",
(long)curcop->cop_line);
for (i=0; i<dlevel; i++)
fprintf(stderr,"%c%c ",debname[i],debdelim[i]);
# ifdef I_STDARG
va_start(args, pat);
# else
va_start(args);
# endif
(void) vfprintf(stderr,pat,args);
va_end( args );
}
#endif /* !defined(I_STDARG) && !defined(I_VARARGS) */
void
deb_growlevel()
{
dlmax += 128;
Renew(debname, dlmax, char);
Renew(debdelim, dlmax, char);
}
I32
debstackptrs()
{
fprintf(stderr, "%8lx %8lx %8ld %8ld %8ld\n",
(unsigned long)stack, (unsigned long)stack_base,
(long)*markstack_ptr, (long)(stack_sp-stack_base),
(long)(stack_max-stack_base));
fprintf(stderr, "%8lx %8lx %8ld %8ld %8ld\n",
(unsigned long)mainstack, (unsigned long)AvARRAY(stack),
(long)mainstack, (long)AvFILL(stack), (long)AvMAX(stack));
return 0;
}
I32
debstack()
{
I32 top = stack_sp - stack_base;
register I32 i = top - 30;
I32 *markscan = markstack;
if (i < 0)
i = 0;
while (++markscan <= markstack_ptr)
if (*markscan >= i)
break;
fprintf(stderr, i ? " => ... " : " => ");
if (stack_base[0] != &sv_undef || stack_sp < stack_base)
fprintf(stderr, " [STACK UNDERFLOW!!!]\n");
do {
++i;
if (markscan <= markstack_ptr && *markscan < i) {
do {
++markscan;
putc('*', stderr);
}
while (markscan <= markstack_ptr && *markscan < i);
fprintf(stderr, " ");
}
if (i > top)
break;
fprintf(stderr, "%-4s ", SvPEEK(stack_base[i]));
}
while (1);
fprintf(stderr, "\n");
return 0;
}
#else
static int dummy; /* avoid totally empty deb.o file */
#endif /* DEBUGGING */
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