зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
3.3 KiB
Perl
Executable File
85 строки
3.3 KiB
Perl
Executable File
#!/usr/bin/perl
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is fix-linux-stack.pl.
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#
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# The Initial Developer of the Original Code is L. David Baron.
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# Portions created by the Initial Developer are Copyright (C) 2003
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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# L. David Baron <dbaron@dbaron.org> (original author)
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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# This script uses addr2line (part of binutils) to process the output of
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# nsTraceRefcnt's Linux stack walking code. This is useful for two
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# things:
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# (1) Getting line number information out of
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# |nsTraceRefcntImpl::WalkTheStack|'s output in debug builds.
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# (2) Getting function names out of |nsTraceRefcntImpl::WalkTheStack|'s
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# output on optimized builds (where it mostly prints UNKNOWN
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# because only a handful of symbols are exported from component
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# libraries).
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#
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# Use the script by piping output containing stacks (such as raw stacks
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# or make-tree.pl balance trees) through this script.
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use strict;
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use IPC::Open2;
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my %pipes;
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while (<>) {
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my $line = $_;
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if ($line =~ /^([ \|0-9-]*)(.*) ?\[([^ ]*) \+(0x[0-9A-F]{1,8})\](.*)$/) {
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my $before = $1; # allow preservation of balance trees
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my $badsymbol = $2;
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my $file = $3;
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my $address = $4;
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my $after = $5; # allow preservation of counts
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my $pipe;
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unless (exists $pipes{$file}) {
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my $pid = open2($pipe->{read}, $pipe->{write},
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'/usr/bin/addr2line', '-C', '-f', '-e', "$file");
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$pipes{$file} = $pipe;
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} else {
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$pipe = $pipes{$file};
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}
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my $out = $pipe->{write};
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my $in = $pipe->{read};
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print {$out} "$address\n";
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chomp(my $symbol = <$in>);
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chomp(my $fileandline = <$in>);
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if ($symbol eq "??") { $symbol = $badsymbol; }
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if ($fileandline eq "??:0") { $fileandline = $file; }
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print "$before$symbol ($fileandline)$after\n";
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} else {
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print $line;
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}
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}
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