diff --git a/stackcollapse-elfutils.pl b/stackcollapse-elfutils.pl new file mode 100755 index 00000000..c5e6b17e --- /dev/null +++ b/stackcollapse-elfutils.pl @@ -0,0 +1,98 @@ +#!/usr/bin/perl -w +# +# stackcollapse-elfutils Collapse elfutils stack (eu-stack) backtraces +# +# Parse a list of elfutils backtraces as generated with the poor man's +# profiler [1]: +# +# for x in $(seq 1 "$nsamples"); do +# eu-stack -p "$pid" "$@" +# sleep "$sleeptime" +# done +# +# [1] http://poormansprofiler.org/ +# +# Copyright 2014 Gabriel Corona. All rights reserved. +# +# CDDL HEADER START +# +# The contents of this file are subject to the terms of the +# Common Development and Distribution License (the "License"). +# You may not use this file except in compliance with the License. +# +# You can obtain a copy of the license at docs/cddl1.txt or +# http://opensource.org/licenses/CDDL-1.0. +# See the License for the specific language governing permissions +# and limitations under the License. +# +# When distributing Covered Code, include this CDDL HEADER in each +# file and include the License file at docs/cddl1.txt. +# If applicable, add the following below this CDDL HEADER, with the +# fields enclosed by brackets "[]" replaced with your own identifying +# information: Portions Copyright [yyyy] [name of copyright owner] +# +# CDDL HEADER END + +use strict; +use Getopt::Long; + +my $with_pid = 0; +my $with_tid = 0; + +GetOptions('pid' => \$with_pid, + 'tid' => \$with_tid) +or die < outfile\n + --pid # include PID + --tid # include TID +USAGE_END + +my $pid = ""; +my $tid = ""; +my $current = ""; +my $previous_function = ""; + +my %stacks; + +sub add_current { + if(!($current eq "")) { + my $entry; + if ($with_tid) { + $current = "TID=$tid;$current"; + } + if ($with_pid) { + $current = "PID=$pid;$current"; + } + $stacks{$current} += 1; + $current = ""; + } +} + +while(<>) { + chomp; + if (m/^PID ([0-9]*)/) { + add_current(); + $pid = $1; + } + elsif(m/^TID ([0-9]*)/) { + add_current(); + $tid = $1; + } elsif(m/^#[0-9]* *0x[0-9a-f]* (.*)/) { + if ($current eq "") { + $current = $1; + } else { + $current = "$1;$current"; + } + } elsif(m/^#[0-9]* *0x[0-9a-f]*/) { + if ($current eq "") { + $current = "[unknown]"; + } else { + $current = "[unknown];$current"; + } + } +} +add_current(); + +foreach my $k (sort { $a cmp $b } keys %stacks) { + print "$k $stacks{$k}\n"; +}