| 1 |
root |
1.1 |
#include "EXTERN.h" |
| 2 |
|
|
#include "perl.h" |
| 3 |
|
|
#include "XSUB.h" |
| 4 |
|
|
|
| 5 |
root |
1.4 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
| 6 |
|
|
(PERL_REVISION > (a) \ |
| 7 |
|
|
|| (PERL_REVISION == (a) \ |
| 8 |
|
|
&& (PERL_VERSION > (b) \ |
| 9 |
|
|
|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
| 10 |
|
|
|
| 11 |
|
|
#if !PERL_VERSION_ATLEAST (5,8,9) |
| 12 |
|
|
# define SVt_LAST 16 |
| 13 |
|
|
#endif |
| 14 |
|
|
|
| 15 |
root |
1.1 |
#define res_pair(text) \ |
| 16 |
|
|
{ \ |
| 17 |
|
|
AV *av = newAV (); \ |
| 18 |
|
|
av_push (av, newSVpv (text, 0)); \ |
| 19 |
|
|
av_push (av, newRV_inc (sv)); \ |
| 20 |
|
|
av_push (about, newRV_noinc ((SV *)av)); \ |
| 21 |
|
|
} |
| 22 |
|
|
|
| 23 |
|
|
#define res_gv(sigil) \ |
| 24 |
|
|
{ \ |
| 25 |
|
|
AV *av = newAV (); \ |
| 26 |
|
|
av_push (av, newSVpv (form ("in the global %c%s::%.*s", sigil, \ |
| 27 |
|
|
HvNAME (GvSTASH (sv)), \ |
| 28 |
|
|
GvNAMELEN (sv), GvNAME (sv) ? GvNAME (sv) : "<anonymous>"), \ |
| 29 |
|
|
0)); \ |
| 30 |
|
|
av_push (about, newRV_noinc ((SV *)av)); \ |
| 31 |
|
|
} |
| 32 |
|
|
|
| 33 |
|
|
MODULE = Devel::FindRef PACKAGE = Devel::FindRef |
| 34 |
|
|
|
| 35 |
|
|
PROTOTYPES: ENABLE |
| 36 |
|
|
|
| 37 |
|
|
SV * |
| 38 |
|
|
ptr2ref (IV ptr) |
| 39 |
|
|
CODE: |
| 40 |
|
|
RETVAL = newRV_inc (INT2PTR (SV *, ptr)); |
| 41 |
|
|
OUTPUT: |
| 42 |
|
|
RETVAL |
| 43 |
|
|
|
| 44 |
|
|
void |
| 45 |
|
|
find_ (SV *target) |
| 46 |
|
|
PPCODE: |
| 47 |
|
|
{ |
| 48 |
|
|
SV *arena, *targ; |
| 49 |
|
|
int rmagical, i; |
| 50 |
|
|
AV *about = newAV (); |
| 51 |
|
|
AV *excl = newAV (); |
| 52 |
|
|
|
| 53 |
|
|
if (!SvROK (target)) |
| 54 |
root |
1.3 |
croak ("find expects a reference to a perl value"); |
| 55 |
root |
1.1 |
|
| 56 |
|
|
targ = SvRV (target); |
| 57 |
|
|
|
| 58 |
|
|
for (arena = PL_sv_arenaroot; arena; arena = SvANY (arena)) |
| 59 |
|
|
{ |
| 60 |
|
|
UV idx = SvREFCNT (arena); |
| 61 |
|
|
|
| 62 |
|
|
/* Remember that the zeroth slot is used as the pointer onwards, so don't |
| 63 |
|
|
include it. */ |
| 64 |
|
|
while (--idx > 0) |
| 65 |
|
|
{ |
| 66 |
|
|
SV *sv = &arena [idx]; |
| 67 |
root |
1.2 |
|
| 68 |
|
|
if (SvTYPE (sv) >= SVt_LAST) |
| 69 |
|
|
continue; |
| 70 |
|
|
|
| 71 |
|
|
/* temporarily disable RMAGICAL, it can easily interfere with us */ |
| 72 |
root |
1.1 |
if ((rmagical = SvRMAGICAL (sv))) |
| 73 |
|
|
SvRMAGICAL_off (sv); |
| 74 |
|
|
|
| 75 |
root |
1.2 |
if (SvTYPE (sv) >= SVt_PVMG) |
| 76 |
|
|
{ |
| 77 |
|
|
MAGIC *mg = SvMAGIC (sv); |
| 78 |
|
|
while (mg) |
| 79 |
|
|
{ |
| 80 |
|
|
if (mg->mg_obj == targ) |
| 81 |
|
|
res_pair (form ("referenced (in mg_obj) by '%c' type magic attached to", mg->mg_type)); |
| 82 |
|
|
if ((SV *)mg->mg_ptr == targ && mg->mg_flags & MGf_REFCOUNTED) |
| 83 |
|
|
res_pair (form ("referenced (in mg_ptr) by '%c' type magic attached to", mg->mg_type)); |
| 84 |
|
|
|
| 85 |
|
|
mg = mg->mg_moremagic; |
| 86 |
|
|
} |
| 87 |
|
|
} |
| 88 |
root |
1.1 |
|
| 89 |
|
|
switch (SvTYPE (sv)) |
| 90 |
|
|
{ |
| 91 |
|
|
case SVt_RV: |
| 92 |
|
|
if (sv != target && SvRV (sv) == targ) |
| 93 |
|
|
res_pair ("referenced by"); |
| 94 |
|
|
break; |
| 95 |
|
|
|
| 96 |
|
|
case SVt_PVAV: |
| 97 |
|
|
if (AvREAL (sv)) |
| 98 |
|
|
for (i = AvFILLp (sv) + 1; i--; ) |
| 99 |
|
|
if (AvARRAY (sv)[i] == targ) |
| 100 |
|
|
res_pair (form ("in array element %d of", i)); |
| 101 |
|
|
break; |
| 102 |
|
|
|
| 103 |
|
|
case SVt_PVHV: |
| 104 |
|
|
if (hv_iterinit ((HV *)sv)) |
| 105 |
|
|
{ |
| 106 |
|
|
HE *he; |
| 107 |
|
|
while ((he = hv_iternext ((HV *)sv))) |
| 108 |
|
|
if (HeVAL (he) == targ) |
| 109 |
|
|
res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he))); |
| 110 |
|
|
} |
| 111 |
|
|
break; |
| 112 |
|
|
|
| 113 |
|
|
case SVt_PVCV: |
| 114 |
|
|
{ |
| 115 |
|
|
int depth = CvDEPTH (sv); |
| 116 |
|
|
if (depth) |
| 117 |
|
|
{ |
| 118 |
|
|
AV *padlist = CvPADLIST (sv); |
| 119 |
|
|
while (depth) |
| 120 |
|
|
{ |
| 121 |
|
|
AV *pad = (AV *)AvARRAY (padlist)[depth]; |
| 122 |
|
|
av_push (excl, newSVuv (PTR2UV (pad))); /* exclude pads from being found */ |
| 123 |
|
|
for (i = AvFILLp (pad); i--; ) |
| 124 |
|
|
if (AvARRAY (pad)[i] == targ) |
| 125 |
|
|
res_pair (form ("in the lexical '%s' in", SvPVX (AvARRAY (AvARRAY (padlist)[0])[i]))); |
| 126 |
|
|
|
| 127 |
|
|
--depth; |
| 128 |
|
|
} |
| 129 |
|
|
} |
| 130 |
|
|
} |
| 131 |
|
|
break; |
| 132 |
root |
1.2 |
|
| 133 |
|
|
case SVt_PVGV: |
| 134 |
|
|
if (GvGP (sv)) |
| 135 |
|
|
{ |
| 136 |
|
|
if (GvSV (sv) == targ) |
| 137 |
|
|
res_gv ('$'); |
| 138 |
|
|
if (GvAV (sv) == (AV *)targ) |
| 139 |
|
|
res_gv ('@'); |
| 140 |
|
|
if (GvHV (sv) == (HV *)targ) |
| 141 |
|
|
res_gv ('%'); |
| 142 |
|
|
if (GvCV (sv) == (CV *)targ) |
| 143 |
|
|
res_gv ('&'); |
| 144 |
|
|
} |
| 145 |
|
|
break; |
| 146 |
root |
1.1 |
} |
| 147 |
|
|
|
| 148 |
|
|
if (rmagical) |
| 149 |
|
|
SvRMAGICAL_off (sv); |
| 150 |
|
|
} |
| 151 |
|
|
} |
| 152 |
|
|
|
| 153 |
|
|
EXTEND (SP, 2); |
| 154 |
|
|
PUSHs (sv_2mortal (newRV_noinc ((SV *)about))); |
| 155 |
|
|
PUSHs (sv_2mortal (newRV_noinc ((SV *)excl))); |
| 156 |
|
|
} |
| 157 |
|
|
|
