ClickHouse/utils/postprocess-traces/postprocess-traces.pl

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#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
my @current_stack = ();
my $grouped_stacks = {};
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sub process_stacktrace
{
my $group = \$grouped_stacks;
for my $frame (reverse @current_stack)
{
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$group = \$$group->{children}{$frame};
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$$group->{count} ||= 0;
++$$group->{count};
}
@current_stack = ();
}
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while (my $line = <>)
{
chomp $line;
if ($line =~ '^#')
{
$line =~ s/^#\d+\s+//;
$line =~ s/ \([^\)]+=.+\) at / at /g;
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push @current_stack, $line;
}
if ($line eq '')
{
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process_stacktrace();
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}
}
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process_stacktrace();
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sub print_group
{
my $group = shift;
my $level = shift || 0;
for my $key (sort { $group->{children}{$b}{count} <=> $group->{children}{$a}{count} } keys %{$group->{children}})
{
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my $count = $group->{children}{$key}{count};
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print(('| ' x $level) . $count . (' ' x (5 - (length $count))) . $key . "\n");
print_group($group->{children}{$key}, $level + 1);
}
}
print_group($grouped_stacks);