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1 | /* deb.c |
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2 | * |
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3 | * Copyright (c) 1991-1999, Larry Wall |
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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 | * |
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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 |
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13 | */ |
14 | |
15 | #include "EXTERN.h" |
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16 | #define PERL_IN_DEB_C |
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17 | #include "perl.h" |
18 | |
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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 | |
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33 | void |
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34 | Perl_deb(pTHX_ const char *pat, ...) |
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35 | { |
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36 | #ifdef DEBUGGING |
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37 | va_list args; |
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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; |
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49 | register I32 i; |
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50 | GV* gv = PL_curcop->cop_filegv; |
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51 | |
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52 | #ifdef USE_THREADS |
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53 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" (%s:%ld)\t", |
54 | PTR2UV(thr), |
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55 | SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>", |
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56 | (long)PL_curcop->cop_line); |
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57 | #else |
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58 | PerlIO_printf(Perl_debug_log, "(%s:%ld)\t", |
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59 | SvTYPE(gv) == SVt_PVGV ? SvPVX(GvSV(gv)) : "<free>", |
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60 | (long)PL_curcop->cop_line); |
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61 | #endif /* USE_THREADS */ |
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62 | (void) PerlIO_vprintf(Perl_debug_log, pat, *args); |
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63 | #endif /* DEBUGGING */ |
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64 | } |
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65 | |
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66 | I32 |
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67 | Perl_debstackptrs(pTHX) |
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68 | { |
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69 | #ifdef DEBUGGING |
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70 | dTHR; |
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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))); |
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81 | #endif /* DEBUGGING */ |
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82 | return 0; |
83 | } |
84 | |
85 | I32 |
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86 | Perl_debstack(pTHX) |
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87 | { |
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88 | #ifdef DEBUGGING |
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89 | dTHR; |
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90 | I32 top = PL_stack_sp - PL_stack_base; |
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91 | register I32 i = top - 30; |
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92 | I32 *markscan = PL_curstackinfo->si_markbase; |
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93 | |
94 | if (i < 0) |
95 | i = 0; |
96 | |
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97 | while (++markscan <= PL_markstack_ptr) |
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98 | if (*markscan >= i) |
99 | break; |
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100 | |
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101 | #ifdef USE_THREADS |
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102 | PerlIO_printf(Perl_debug_log, |
103 | i ? "0x%"UVxf" => ... " : "0x%lx => ", |
104 | PTR2UV(thr)); |
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105 | #else |
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106 | PerlIO_printf(Perl_debug_log, i ? " => ... " : " => "); |
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107 | #endif /* USE_THREADS */ |
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108 | if (PL_stack_base[0] != &PL_sv_undef || PL_stack_sp < PL_stack_base) |
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109 | PerlIO_printf(Perl_debug_log, " [STACK UNDERFLOW!!!]\n"); |
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110 | do { |
111 | ++i; |
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112 | if (markscan <= PL_markstack_ptr && *markscan < i) { |
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113 | do { |
114 | ++markscan; |
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115 | PerlIO_putc(Perl_debug_log, '*'); |
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116 | } |
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117 | while (markscan <= PL_markstack_ptr && *markscan < i); |
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118 | PerlIO_printf(Perl_debug_log, " "); |
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119 | } |
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120 | if (i > top) |
121 | break; |
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122 | PerlIO_printf(Perl_debug_log, "%-4s ", SvPEEK(PL_stack_base[i])); |
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123 | } |
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124 | while (1); |
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125 | PerlIO_printf(Perl_debug_log, "\n"); |
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126 | #endif /* DEBUGGING */ |
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127 | return 0; |
128 | } |