mirror of
https://github.com/percona/percona-toolkit.git
synced 2025-09-19 02:05:23 +00:00
56eea61dae
Initial port of https://github.com/Percona-Lab/pt-pmp: - Added bin/pt-eustack-resolver - Ported changes to bin/pt-pmp
250 lines
6.1 KiB
Perl
Executable File
250 lines
6.1 KiB
Perl
Executable File
#!/usr/bin/env perl
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# This program is part of Percona Toolkit: http://www.percona.com/software/
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# See "COPYRIGHT, LICENSE, AND WARRANTY" at the end of this file for legal
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# notices and disclaimers.
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use strict;
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use Data::Dumper;
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my $mmap;
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sub load_mapping {
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my ($pid)= @_;
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if ($pid =~ /^[0-9]+$/) {
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open F, '<', "/proc/$pid/maps"
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or die "Failed to open /proc/$pid/maps: $!\n";
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} else {
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open F, '<', $pid
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or die "Failed to open saved map file '$pid': $!\n";
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}
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my $arr= [];
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while (<F>) {
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next unless m/^([a-f0-9]+)-([a-f0-9]+) ..x. ([a-f0-9]+) [a-f0-9:]+ [0-9]+ +(.*)/;
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push @$arr, { S => hex($1), E => hex($2), B => hex($3), F => $4 };
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}
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close F;
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sort { $a->{S} <=> $b->{S} } @$arr;
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$mmap= $arr;
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}
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my $syms= { };
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sub get_image {
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my ($addr)= @_;
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my $e;
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for $e (@$mmap) {
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next if $e->{E} <= $addr;
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last if $e->{S} > $addr;
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# Found, look up.
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return $e->{F};
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}
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return "";
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}
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die "Usage: $0 <pid>" unless @ARGV == 1;
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my $pid= $ARGV[0];
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load_mapping($pid);
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#for (@$mmap) {
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# printf "0x%x - 0x%x (0x%x): %s\n", $_->{S}, $_->{E}, $_->{B}, $_->{F};
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#}
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open (STACK_TRACE, "eu-stack -q -p $pid 2>/dev/null|") or die "open(): $!";
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my @lines= <STACK_TRACE>;
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close(STACK_TRACE);
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my $frame_no= 0;
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my %addr=();
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my %sf=();
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my $lwp;
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for my $line (@lines) {
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if ($line =~ /^TID ([0-9]+):/)
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{
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$frame_no= 0;
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$lwp=$1;
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}
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elsif ($line =~ /^#[0-9]+?\s*0x([a-f0-9]+)/)
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{
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push @{$sf{$lwp}},$1;
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$addr{$1}=[get_image(hex($1)),""];
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} else {
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#print $line;
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}
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}
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my %inverse;
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push @{ $inverse{ $addr{$_}->[0] } }, $_ for keys %addr;
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foreach my $bin (keys %inverse)
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{
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my $addrs=join(" ",@{$inverse{$bin}});
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my @resolved=();
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@resolved=(`eu-addr2line --pretty-print -s -C -f -p $pid $addrs`);
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my $idx=0;
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foreach $a (@{$inverse{$bin}})
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{
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$addr{$a}->[1]=$resolved[$idx];
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$addr{$a}->[1]=~ s/\n//;
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$addr{$a}->[1]=~ s/at \?\?:0/from $addr{$a}->[0]/;
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$idx++;
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}
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}
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foreach $lwp (sort {$a<=>$b} keys %sf)
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{
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my $idx=0;
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print "Thread $lwp (LWP $lwp):\n";
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foreach $frame_no (@{$sf{$lwp}})
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{
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print join(" ","#".$idx, "0x".$frame_no,"in", $addr{$frame_no}->[1]),"\n";
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$idx++;
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}
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print "\n";
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}
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# ############################################################################
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# Documentation
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# ############################################################################
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=pod
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=head1 NAME
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pt-eustack-resover - Get stack traces for a selected program with eu-stack and resolve symbols
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=head1 SYNOPSIS
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Usage: pt-eustack-resolver <pid>
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=head1 RISKS
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Percona Toolkit is mature, proven in the real world, and well tested,
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but all database tools can pose a risk to the system and the database
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server. Before using this tool, please:
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=over
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=item * Read the tool's documentation
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=item * Review the tool's known L<"BUGS">
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=item * Test the tool on a non-production server
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=item * Backup your production server and verify the backups
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=back
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=head1 DESCRIPTION
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pt-eustack-resover is the tool that gets stack traces for a selected program
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with eu-stack and resolves symbols. This is companion tool for L<pt-pmp>, called
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when option --dumper=pteu is specified.
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eu-stack is a tool from elfutils package that prints a stack for each thread in
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a process or core file. eu-stack is faster than gdb and smaller overhead on the
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diagnosed process.
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=head1 OUTPUT
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Stack for each thread, formatted similarly to `gdb thread apply all bt` output.
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=head1 ATTENTION
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Using <PTDEBUG> might expose passwords. When debug is enabled, all command line
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parameters are shown in the output.
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=head1 SYSTEM REQUIREMENTS
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You need eu-stack from the elfutils package.
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=head1 BUGS
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For a list of known bugs, see L<https://jira.percona.com/projects/PT/issues>.
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Please report bugs at L<https://jira.percona.com/projects/PT>.
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Include the following information in your bug report:
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=over
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=item * Complete command-line used to run the tool
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=item * Tool L<"--version">
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=item * MySQL version of all servers involved
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=item * Output from the tool including STDERR
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=item * Input files (log/dump/config files, etc.)
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=back
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If possible, include debugging output by running the tool with C<PTDEBUG>;
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see L<"ENVIRONMENT">.
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=head1 DOWNLOADING
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Visit L<http://www.percona.com/software/percona-toolkit/> to download the
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latest release of Percona Toolkit. Or, get the latest release from the
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command line:
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wget percona.com/get/percona-toolkit.tar.gz
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wget percona.com/get/percona-toolkit.rpm
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wget percona.com/get/percona-toolkit.deb
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You can also get individual tools from the latest release:
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wget percona.com/get/TOOL
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Replace C<TOOL> with the name of any tool.
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=head1 AUTHORS
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Alexey Stroganov
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=head1 ACKNOWLEDGMENTS
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Part of code for symbol resolving derived from resolve-stack-traces.pl script
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(https://github.com/knielsen/knielsen-pmp)
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=head1 ABOUT PERCONA TOOLKIT
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This tool is part of Percona Toolkit, a collection of advanced command-line
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tools for MySQL developed by Percona. Percona Toolkit was forked from two
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projects in June, 2011: Maatkit and Aspersa. Those projects were created by
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Baron Schwartz and primarily developed by him and Daniel Nichter. Visit
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L<http://www.percona.com/software/> to learn about other free, open-source
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software from Percona.
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=head1 COPYRIGHT, LICENSE, AND WARRANTY
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This program is copyright 2017-2024 Percona LLC and/or its affiliates.
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THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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systems, you can issue `man perlgpl' or `man perlartistic' to read these
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licenses.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA.
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=head1 VERSION
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pt-eustack-resolver 3.5.7
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=cut
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