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|
#! @PERL@
eval "exec @PERL@ -S $0 $@"
if 0;
# Copyright (C) 1997-2024 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# Based on the mtrace.awk script.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
$VERSION = "@VERSION@";
$PKGVERSION = "@PKGVERSION@";
$REPORT_BUGS_TO = '@REPORT_BUGS_TO@';
$progname = $0;
sub usage {
print "Usage: mtrace [OPTION]... [Binary] MtraceData\n";
print " --help print this help, then exit\n";
print " --version print version number, then exit\n";
print "\n";
print "For bug reporting instructions, please see:\n";
print "$REPORT_BUGS_TO.\n";
exit 0;
}
# We expect two arguments:
# #1: the complete path to the binary
# #2: the mtrace data filename
# The usual options are also recognized.
arglist: while (@ARGV) {
if ($ARGV[0] eq "--v" || $ARGV[0] eq "--ve" || $ARGV[0] eq "--ver" ||
$ARGV[0] eq "--vers" || $ARGV[0] eq "--versi" ||
$ARGV[0] eq "--versio" || $ARGV[0] eq "--version") {
print "mtrace $PKGVERSION$VERSION\n";
print "Copyright (C) 2024 Free Software Foundation, Inc.\n";
print "This is free software; see the source for copying conditions. There is NO\n";
print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
print "Written by Ulrich Drepper <drepper\@gnu.org>\n";
exit 0;
} elsif ($ARGV[0] eq "--h" || $ARGV[0] eq "--he" || $ARGV[0] eq "--hel" ||
$ARGV[0] eq "--help") {
&usage;
} elsif ($ARGV[0] =~ /^-/) {
print "$progname: unrecognized option `$ARGV[0]'\n";
print "Try `$progname --help' for more information.\n";
exit 1;
} else {
last arglist;
}
}
if ($#ARGV == 0) {
$binary="";
$data=$ARGV[0];
} elsif ($#ARGV == 1) {
$binary=$ARGV[0];
$data=$ARGV[1];
if ($binary =~ /^.*[\/].*$/) {
$prog = $binary;
} else {
$prog = "./$binary";
}
# Set the environment variable LD_TRACE_LOADED_OBJECTS to 2 so the
# executable is also printed.
if (open (locs, "env LD_TRACE_LOADED_OBJECTS=2 $prog |")) {
while (<locs>) {
chop;
if (/^.*=> (.*) .(0x[0123456789abcdef]*).$/) {
$locs{$1} = $2;
$rel{$1} = hex($2);
}
}
close (LOCS);
}
} else {
die "Wrong number of arguments, run $progname --help for help.";
}
sub addr2line {
my $addr = pop(@_);
my $prog = pop(@_);
if (open (ADDR, "addr2line -e $prog $addr|")) {
my $line = <ADDR>;
chomp $line;
close (ADDR);
if ($line ne '??:0') {
return $line
}
}
}
sub location {
my $str = pop(@_);
return $str if ($str eq "");
if ($str =~ /.*[[](0x[^]]*)]:(.)*/) {
my $addr = $1;
my $fct = $2;
return $cache{$addr} if (exists $cache{$addr});
if ($binary ne "") {
my $line = &addr2line($binary, $addr);
if ($line) {
$cache{$addr} = $line;
return $cache{$addr};
}
}
$cache{$addr} = $str = "$fct @ $addr";
} elsif ($str =~ /^(.*):.*[[](0x[^]]*)]$/) {
my $prog = $1;
my $addr = $2;
my $searchaddr;
return $cache{$addr} if (exists $cache{$addr});
$searchaddr = sprintf "%#x", hex($addr) + $rel{$prog};
if ($binary ne "") {
for my $address ($searchaddr, $addr) {
my $line = &addr2line($prog, $address);
if ($line) {
$cache{$addr} = $line;
return $cache{$addr};
}
}
}
$cache{$addr} = $str = $addr;
} elsif ($str =~ /^.*[[](0x[^]]*)]$/) {
my $addr = $1;
return $cache{$addr} if (exists $cache{$addr});
if ($binary ne "") {
my $line = &addr2line($binary, $addr);
if ($line) {
$cache{$addr} = $line;
return $cache{$addr};
}
}
$cache{$addr} = $str = $addr;
}
return $str;
}
$nr=0;
open(DATA, "<$data") || die "Cannot open mtrace data file";
while (<DATA>) {
my @cols = split (' ');
my $n, $where;
if ($cols[0] eq "@") {
# We have address and/or function name.
$where=$cols[1];
$n=2;
} else {
$where="";
$n=0;
}
$allocaddr=$cols[$n + 1];
$howmuch=hex($cols[$n + 2]);
++$nr;
SWITCH: {
if ($cols[$n] eq "+") {
if (defined $allocated{$allocaddr}) {
printf ("+ %#0@XXX@x Alloc %d duplicate: %s %s\n",
hex($allocaddr), $nr, &location($addrwas{$allocaddr}),
$where);
} elsif ($allocaddr =~ /^0x/) {
$allocated{$allocaddr}=$howmuch;
$addrwas{$allocaddr}=$where;
}
last SWITCH;
}
if ($cols[$n] eq "-") {
if (defined $allocated{$allocaddr}) {
undef $allocated{$allocaddr};
undef $addrwas{$allocaddr};
} else {
printf ("- %#0@XXX@x Free %d was never alloc'd %s\n",
hex($allocaddr), $nr, &location($where));
}
last SWITCH;
}
if ($cols[$n] eq "<") {
if (defined $allocated{$allocaddr}) {
undef $allocated{$allocaddr};
undef $addrwas{$allocaddr};
} else {
printf ("- %#0@XXX@x Realloc %d was never alloc'd %s\n",
hex($allocaddr), $nr, &location($where));
}
last SWITCH;
}
if ($cols[$n] eq ">") {
if (defined $allocated{$allocaddr}) {
printf ("+ %#0@XXX@x Realloc %d duplicate: %#010x %s %s\n",
hex($allocaddr), $nr, $allocated{$allocaddr},
&location($addrwas{$allocaddr}), &location($where));
} else {
$allocated{$allocaddr}=$howmuch;
$addrwas{$allocaddr}=$where;
}
last SWITCH;
}
if ($cols[$n] eq "=") {
# Ignore "= Start".
last SWITCH;
}
if ($cols[$n] eq "!") {
# Ignore failed realloc for now.
last SWITCH;
}
}
}
close (DATA);
# Now print all remaining entries.
@addrs= keys %allocated;
$anything=0;
if ($#addrs >= 0) {
foreach $addr (sort @addrs) {
if (defined $allocated{$addr}) {
if ($anything == 0) {
print "\nMemory not freed:\n-----------------\n";
print ' ' x (@XXX@ - 7), "Address Size Caller\n";
$anything=1;
}
printf ("%#0@XXX@x %#8x at %s\n", hex($addr), $allocated{$addr},
&location($addrwas{$addr}));
}
}
}
print "No memory leaks.\n" if ($anything == 0);
exit $anything != 0;
|
