mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-13 18:27:35 +00:00
131 lines
3.0 KiB
Prolog
Executable File
131 lines
3.0 KiB
Prolog
Executable File
#!/usr/bin/perl -w
|
|
#
|
|
# The contents of this file are subject to the Netscape Public License
|
|
# Version 1.0 (the "NPL"); you may not use this file except in
|
|
# compliance with the NPL. You may obtain a copy of the NPL at
|
|
# http://www.mozilla.org/NPL/
|
|
#
|
|
# Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
# for the specific language governing rights and limitations under the
|
|
# NPL.
|
|
#
|
|
# The Initial Developer of this code under the NPL is Netscape
|
|
# Communications Corporation. Portions created by Netscape are
|
|
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
# Reserved.
|
|
#
|
|
# Original Author:
|
|
# L. David Baron <dbaron@fas.harvard.edu> - wrote script loosely
|
|
# based on Chris Waterson's find-leakers.pl and make-tree.pl
|
|
#
|
|
# See http://www.mozilla.org/performance/refcnt-balancer.html for more info.
|
|
#
|
|
|
|
use 5.004;
|
|
use strict;
|
|
use Getopt::Long;
|
|
|
|
# GetOption will create $opt_object, so ignore the
|
|
# warning that gets spit out about those vbls.
|
|
GetOptions("object=s", "list", "help");
|
|
|
|
# use $::opt_help twice to eliminate warning...
|
|
($::opt_help) && ($::opt_help) && die qq{
|
|
usage: find-comptr-leakers.pl < logfile
|
|
--object <obj> Examine only object <obj>
|
|
--list Only list leaked objects
|
|
--help This message :-)
|
|
};
|
|
|
|
if ($::opt_object) {
|
|
warn "Examining only object $::opt_object (THIS IS BROKEN)\n";
|
|
} else {
|
|
warn "Examining all objects\n";
|
|
}
|
|
|
|
my %allocs = ( );
|
|
my %counter;
|
|
my $id = 0;
|
|
|
|
my $accumulating = 0;
|
|
my $savedata = 0;
|
|
my $class;
|
|
my $obj;
|
|
my $sno;
|
|
my $op;
|
|
my $cnt;
|
|
my $ptr;
|
|
my $strace;
|
|
|
|
sub save_data {
|
|
# save the data
|
|
if ($op eq 'nsCOMPtrAddRef') {
|
|
push @{ $allocs{$sno}->{$ptr} }, [ +1, $strace ];
|
|
}
|
|
elsif ($op eq 'nsCOMPtrRelease') {
|
|
push @{ $allocs{$sno}->{$ptr} }, [ -1, $strace ];
|
|
my $sum = 0;
|
|
my @ptrallocs = @{ $allocs{$sno}->{$ptr} };
|
|
foreach my $alloc (@ptrallocs) {
|
|
$sum += @$alloc[0];
|
|
}
|
|
if ( $sum == 0 ) {
|
|
delete($allocs{$sno}{$ptr});
|
|
}
|
|
}
|
|
}
|
|
|
|
LINE: while (<>) {
|
|
if (/^</) {
|
|
chop; # avoid \n in $ptr
|
|
my @fields = split(/ /, $_);
|
|
|
|
($class, $obj, $sno, $op, $cnt, $ptr) = @fields;
|
|
|
|
$strace = "";
|
|
|
|
if ($::opt_list) {
|
|
save_data();
|
|
} elsif (!($::opt_object) || ($::opt_object eq $obj)) {
|
|
$accumulating = 1;
|
|
}
|
|
} elsif ( $accumulating == 1 ) {
|
|
if ( /^$/ ) {
|
|
# if line is empty
|
|
$accumulating = 0;
|
|
save_data();
|
|
} else {
|
|
$strace = $strace . $_;
|
|
}
|
|
}
|
|
}
|
|
if ( $accumulating == 1) {
|
|
save_data();
|
|
}
|
|
|
|
foreach my $serial (keys(%allocs)) {
|
|
foreach my $comptr (keys( %{$allocs{$serial}} )) {
|
|
my $sum = 0;
|
|
my @ptrallocs = @{ $allocs{$serial}->{$comptr} };
|
|
foreach my $alloc (@ptrallocs) {
|
|
$sum += @$alloc[0];
|
|
}
|
|
print "Object ", $serial, " held by ", $comptr, " is ", $sum, " out of balance.\n";
|
|
unless ($::opt_list) {
|
|
print "\n";
|
|
foreach my $alloc (@ptrallocs) {
|
|
if (@$alloc[0] == +1) {
|
|
print "Put into nsCOMPtr at:\n";
|
|
} elsif (@$alloc[0] == -1) {
|
|
print "Released from nsCOMPtr at:\n";
|
|
}
|
|
print @$alloc[1]; # the stack trace
|
|
print "\n";
|
|
}
|
|
print "\n\n";
|
|
}
|
|
}
|
|
}
|
|
|