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OS/2 build fixups from Ilya Zakharevich
[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     char* file = CopFILE(PL_curcop);
51
52 #ifdef USE_THREADS
53     PerlIO_printf(Perl_debug_log, "0x%"UVxf" (%s:%ld)\t",
54                   PTR2UV(thr),
55                   (file ? file : "<free>"),
56                   (long)CopLINE(PL_curcop));
57 #else
58     PerlIO_printf(Perl_debug_log, "(%s:%ld)\t", (file ? file : "<free>"),
59                   (long)CopLINE(PL_curcop));
60 #endif /* USE_THREADS */
61     (void) PerlIO_vprintf(Perl_debug_log, pat, *args);
62 #endif /* DEBUGGING */
63 }
64
65 I32
66 Perl_debstackptrs(pTHX)
67 {
68 #ifdef DEBUGGING
69     dTHR;
70     PerlIO_printf(Perl_debug_log,
71                   "%8"UVxf" %8"UVxf" %8"IVdf" %8"IVdf" %8"IVdf"\n",
72                   PTR2UV(PL_curstack), PTR2UV(PL_stack_base),
73                   (IV)*PL_markstack_ptr, (IV)(PL_stack_sp-PL_stack_base),
74                   (IV)(PL_stack_max-PL_stack_base));
75     PerlIO_printf(Perl_debug_log,
76                   "%8"UVxf" %8"UVxf" %8"UVuf" %8"UVuf" %8"UVuf"\n",
77                   PTR2UV(PL_mainstack), PTR2UV(AvARRAY(PL_curstack)),
78                   PTR2UV(PL_mainstack), PTR2UV(AvFILLp(PL_curstack)),
79                   PTR2UV(AvMAX(PL_curstack)));
80 #endif /* DEBUGGING */
81     return 0;
82 }
83
84 I32
85 Perl_debstack(pTHX)
86 {
87 #ifdef DEBUGGING
88     dTHR;
89     I32 top = PL_stack_sp - PL_stack_base;
90     register I32 i = top - 30;
91     I32 *markscan = PL_markstack + PL_curstackinfo->si_markoff;
92
93     if (i < 0)
94         i = 0;
95     
96     while (++markscan <= PL_markstack_ptr)
97         if (*markscan >= i)
98             break;
99
100 #ifdef USE_THREADS
101     PerlIO_printf(Perl_debug_log,
102                   i ? "0x%"UVxf"    =>  ...  " : "0x%lx    =>  ",
103                   PTR2UV(thr));
104 #else
105     PerlIO_printf(Perl_debug_log, i ? "    =>  ...  " : "    =>  ");
106 #endif /* USE_THREADS */
107     if (PL_stack_base[0] != &PL_sv_undef || PL_stack_sp < PL_stack_base)
108         PerlIO_printf(Perl_debug_log, " [STACK UNDERFLOW!!!]\n");
109     do {
110         ++i;
111         if (markscan <= PL_markstack_ptr && *markscan < i) {
112             do {
113                 ++markscan;
114                 PerlIO_putc(Perl_debug_log, '*');
115             }
116             while (markscan <= PL_markstack_ptr && *markscan < i);
117             PerlIO_printf(Perl_debug_log, "  ");
118         }
119         if (i > top)
120             break;
121         PerlIO_printf(Perl_debug_log, "%-4s  ", SvPEEK(PL_stack_base[i]));
122     }
123     while (1);
124     PerlIO_printf(Perl_debug_log, "\n");
125 #endif /* DEBUGGING */
126     return 0;
127 }