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Continue what #4494 started; introduce uid and gid formats.
[perl5.git] / deb.c
1 /*    deb.c
2  *
3  *    Copyright (c) 1991-1999, Larry Wall
4  *
5  *    You may distribute under the terms of either the GNU General Public
6  *    License or the Artistic License, as specified in the README file.
7  *
8  */
9
10 /*
11  * "Didst thou think that the eyes of the White Tower were blind?  Nay, I
12  * have seen more than thou knowest, Gray Fool."  --Denethor
13  */
14
15 #include "EXTERN.h"
16 #define PERL_IN_DEB_C
17 #include "perl.h"
18
19 #if defined(PERL_IMPLICIT_CONTEXT)
20 void
21 Perl_deb_nocontext(const char *pat, ...)
22 {
23 #ifdef DEBUGGING
24     dTHX;
25     va_list args;
26     va_start(args, pat);
27     vdeb(pat, &args);
28     va_end(args);
29 #endif /* DEBUGGING */
30 }
31 #endif
32
33 void
34 Perl_deb(pTHX_ const char *pat, ...)
35 {
36 #ifdef DEBUGGING
37     va_list args;
38     va_start(args, pat);
39     vdeb(pat, &args);
40     va_end(args);
41 #endif /* DEBUGGING */
42 }
43
44 void
45 Perl_vdeb(pTHX_ const char *pat, va_list *args)
46 {
47 #ifdef DEBUGGING
48     dTHR;
49     register I32 i;
50     GV* gv = PL_curcop->cop_filegv;
51
52 #ifdef USE_THREADS
53     PerlIO_printf(Perl_debug_log, "0x%"UVxf" (%s:%ld)\t",
54                   PTR2UV(thr),
55                   SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>",
56                   (long)PL_curcop->cop_line);
57 #else
58     PerlIO_printf(Perl_debug_log, "(%s:%ld)\t",
59         SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>",
60         (long)PL_curcop->cop_line);
61 #endif /* USE_THREADS */
62     (void) PerlIO_vprintf(Perl_debug_log, pat, *args);
63 #endif /* DEBUGGING */
64 }
65
66 I32
67 Perl_debstackptrs(pTHX)
68 {
69 #ifdef DEBUGGING
70     dTHR;
71     PerlIO_printf(Perl_debug_log,
72                   "%8"UVxf" %8"UVxf" %8"IVdf" %8"IVdf" %8"IVdf"\n",
73                   PTR2UV(PL_curstack), PTR2UV(PL_stack_base),
74                   (IV)*PL_markstack_ptr, (IV)(PL_stack_sp-PL_stack_base),
75                   (IV)(PL_stack_max-PL_stack_base));
76     PerlIO_printf(Perl_debug_log,
77                   "%8"UVxf" %8"UVxf" %8"UVuf" %8"UVuf" %8"UVuf"\n",
78                   PTR2UV(PL_mainstack), PTR2UV(AvARRAY(PL_curstack)),
79                   PTR2UV(PL_mainstack), PTR2UV(AvFILLp(PL_curstack)),
80                   PTR2UV(AvMAX(PL_curstack)));
81 #endif /* DEBUGGING */
82     return 0;
83 }
84
85 I32
86 Perl_debstack(pTHX)
87 {
88 #ifdef DEBUGGING
89     dTHR;
90     I32 top = PL_stack_sp - PL_stack_base;
91     register I32 i = top - 30;
92     I32 *markscan = PL_curstackinfo->si_markbase;
93
94     if (i < 0)
95         i = 0;
96     
97     while (++markscan <= PL_markstack_ptr)
98         if (*markscan >= i)
99             break;
100
101 #ifdef USE_THREADS
102     PerlIO_printf(Perl_debug_log,
103                   i ? "0x%"UVxf"    =>  ...  " : "0x%lx    =>  ",
104                   PTR2UV(thr));
105 #else
106     PerlIO_printf(Perl_debug_log, i ? "    =>  ...  " : "    =>  ");
107 #endif /* USE_THREADS */
108     if (PL_stack_base[0] != &PL_sv_undef || PL_stack_sp < PL_stack_base)
109         PerlIO_printf(Perl_debug_log, " [STACK UNDERFLOW!!!]\n");
110     do {
111         ++i;
112         if (markscan <= PL_markstack_ptr && *markscan < i) {
113             do {
114                 ++markscan;
115                 PerlIO_putc(Perl_debug_log, '*');
116             }
117             while (markscan <= PL_markstack_ptr && *markscan < i);
118             PerlIO_printf(Perl_debug_log, "  ");
119         }
120         if (i > top)
121             break;
122         PerlIO_printf(Perl_debug_log, "%-4s  ", SvPEEK(PL_stack_base[i]));
123     }
124     while (1);
125     PerlIO_printf(Perl_debug_log, "\n");
126 #endif /* DEBUGGING */
127     return 0;
128 }