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