freeswitch/scripts/perl/analyze-debug-alloc.pl

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Perl
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#!/usr/bin/perl
# analyze-debug-alloc.pl
# generate allocation report by processing log files
# Note that this script is only useful when run against freeswitch log files
# produced when server is running with DEBUG_ALLOC and DEBUG_ALLOC2 set.
# It's purely for diagnosing memory leaks.
use strict;
use JSON;
my $debug = 0;
my @logs = sort glob("freeswitch.log.*");
push( @logs, "freeswitch.log" );
my %pools = ();
foreach my $file (@logs) {
open( my $in, "<$file" );
while ( defined( my $line = <$in> ) ) {
if ( $line =~ /(0x[0-9A-Fa-f]+) DESTROY POOL$/o ) {
my $paddr = $1;
if ( !$pools{$paddr} ) {
$debug && print "WARN: No ref to pool $paddr.\n";
}
else {
foreach my $alloc ( @{ $pools{$paddr}->{allocs} } ) {
# debug, might not be needed
}
delete $pools{$paddr};
}
}
elsif ( $line =~ /(0x[0-9A-Fa-f]+) Free Pool/o ) {
my $paddr = $1;
if ( !$pools{$paddr} ) {
$debug && print "WARN: No ref to pool $paddr.\n";
}
else {
foreach my $alloc ( @{ $pools{$paddr}->{allocs} } ) {
# debug, might not be needed
}
delete $pools{$paddr};
}
}
elsif ( $line =~ /(0x[0-9A-Fa-f]+) New Pool (.*)$/o ) {
my $paddr = $1;
my $where = $2;
if ( $pools{$paddr} ) {
$debug && print "WARN: Duplicate pool $paddr at $where.\n";
}
$pools{$paddr}->{where} = $where;
if ( !$pools{$paddr}->{allocs} ) {
$pools{$paddr}->{allocs} = [];
}
}
elsif ( $line =~ /CONSOLE\] \s*(.*?:\d+) (0x[0-9A-Fa-f]+) Core Allocate (.*:\d+)\s+(\d+)$/o ) {
my $where = $1;
my $paddr = $2;
my $pwhere = $3;
my $size = $4;
if ( !$pools{$paddr} ) {
$debug && print "WARN: Missing pool ref for alloc of $size from $paddr at $where (pool $pwhere)\n";
}
$pools{$paddr}->{where} = $where;
push( @{ $pools{$paddr}->{allocs} }, { size => $size, where => $where } );
}
elsif ( $line =~ /CONSOLE\] \s*(.*?:\d+) (0x[0-9A-Fa-f]+) Core Strdup Allocate (.*:\d+)\s+(\d+)$/o ) {
my $where = $1;
my $paddr = $2;
my $pwhere = $3;
my $size = $4;
if ( !$pools{$paddr} ) {
$debug
&& print "WARN: Missing pool ref for strdup alloc of $size from $paddr at $where (pool $pwhere)\n";
}
$pools{$paddr}->{where} = $where;
push( @{ $pools{$paddr}->{allocs} }, { size => $size, where => $where } );
}
}
}
my $used = 0;
my $pcount = 0;
my $acount = 0;
my %pool_cnt_by_where = ();
my %alloc_size_by_where = ();
my %alloc_cnt_by_where = ();
foreach my $pool ( keys %pools ) {
my $where = $pools{$pool}->{where};
$pcount++;
$pool_cnt_by_where{$where}++;
foreach my $alloc ( @{ $pools{$pool}->{allocs} } ) {
my $sz = $alloc->{size};
my $where = $alloc->{where};
$acount++;
$alloc_size_by_where{$where} += $sz;
$alloc_cnt_by_where{$where}++;
$used += $sz;
}
}
print "Used: $used\n";
print "Pool Count: $pcount\n";
print "Alloc Count: $acount\n";
my $json = new JSON;
$json->pretty(1);
$json->canonical(1);
print "Pool Count by Where:\n";
foreach my $pool ( sort { $pool_cnt_by_where{$a} <=> $pool_cnt_by_where{$b} || $a cmp $b } keys %pool_cnt_by_where ) {
print $pool_cnt_by_where{$pool}, "\t", $pool, "\n";
}
print "\n";
print "Alloc Count by Where:\n";
foreach my $pool ( sort { $alloc_cnt_by_where{$a} <=> $alloc_cnt_by_where{$b} || $a cmp $b } keys %alloc_cnt_by_where )
{
print $alloc_cnt_by_where{$pool}, "\t", $pool, "\n";
}
print "\n";
print "Alloc Size by Where:\n";
foreach
my $pool ( sort { $alloc_size_by_where{$a} <=> $alloc_size_by_where{$b} || $a cmp $b } keys %alloc_size_by_where )
{
print $alloc_size_by_where{$pool}, "\t", $pool, "\n";
}
print "\n";