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119 | my (@about) = find $$refref; |
119 | my (@about) = find $$refref; |
120 | if (@about) { |
120 | if (@about) { |
121 | for my $about (@about) { |
121 | for my $about (@about) { |
122 | $buf .= "$indent" . (@about > 1 ? "+- " : " ") . $about->[0]; |
122 | $buf .= "$indent" . (@about > 1 ? "+- " : " ") . $about->[0]; |
123 | if (@$about > 1) { |
123 | if (@$about > 1) { |
124 | if ($seen{$about->[1]+0}++) { |
124 | if ($seen{ref2ptr $about->[1]}++) { |
125 | $buf .= " $about->[1], which was seen before.\n"; |
125 | $buf .= " $about->[1], which was seen before.\n"; |
126 | } else { |
126 | } else { |
127 | $buf .= " $about->[1], which is\n"; |
127 | $buf .= " $about->[1], which is\n"; |
128 | $track->(\$about->[1], $depth - 1, $about == $about[-1] ? "$indent " : "$indent| "); |
128 | $track->(\$about->[1], $depth - 1, $about == $about[-1] ? "$indent " : "$indent| "); |
129 | } |
129 | } |
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157 | =cut |
157 | =cut |
158 | |
158 | |
159 | sub find($) { |
159 | sub find($) { |
160 | my ($about, $excl) = &find_; |
160 | my ($about, $excl) = &find_; |
161 | my %excl = map +($_ => undef), @$excl; |
161 | my %excl = map +($_ => undef), @$excl; |
162 | grep !exists $excl{$_->[1] + 0}, @$about |
162 | grep !exists $excl{ref2ptr $_->[1]}, @$about |
163 | } |
163 | } |
164 | |
164 | |
165 | =item $ref = Devel::FindRef::ptr2ref $integer |
165 | =item $ref = Devel::FindRef::ptr2ref $integer |
166 | |
166 | |
167 | Sometimes you know (from debugging output) the address of a perl scalar |
167 | Sometimes you know (from debugging output) the address of a perl scalar |
… | |
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170 | call on valid addresses, but extremely dangerous to call on invalid ones. |
170 | call on valid addresses, but extremely dangerous to call on invalid ones. |
171 | |
171 | |
172 | # we know that HASH(0x176ff70) exists, so turn it into a hashref: |
172 | # we know that HASH(0x176ff70) exists, so turn it into a hashref: |
173 | my $ref_to_hash = Devel::FindRef::ptr2ref 0x176ff70; |
173 | my $ref_to_hash = Devel::FindRef::ptr2ref 0x176ff70; |
174 | |
174 | |
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175 | =item $ref = Devel::FindRef::ref2ptr $reference |
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176 | |
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177 | The opposite of C<ptr2ref>, above: returns the internal address of the |
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178 | value pointed to by the passed reference. I<No checks whatsoever will be |
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179 | done>, so don't use this. |
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180 | |
175 | =back |
181 | =back |
176 | |
182 | |
177 | =head1 ENVIRONMENT VARIABLES |
183 | =head1 ENVIRONMENT VARIABLES |
178 | |
184 | |
179 | You can set the environment variable C<PERL_DEVEL_FINDREF_DEPTH> to an |
185 | You can set the environment variable C<PERL_DEVEL_FINDREF_DEPTH> to an |