diff options
Diffstat (limited to 'REORG.TODO/malloc/mtrace.pl')
| -rw-r--r-- | REORG.TODO/malloc/mtrace.pl | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/REORG.TODO/malloc/mtrace.pl b/REORG.TODO/malloc/mtrace.pl new file mode 100644 index 0000000000..4acbd81680 --- /dev/null +++ b/REORG.TODO/malloc/mtrace.pl @@ -0,0 +1,237 @@ +#! @PERL@ +eval "exec @PERL@ -S $0 $@" + if 0; +# Copyright (C) 1997-2017 Free Software Foundation, Inc. +# This file is part of the GNU C Library. +# Contributed by Ulrich Drepper <drepper@gnu.org>, 1997. +# Based on the mtrace.awk script. + +# The GNU C Library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. + +# The GNU C Library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. + +# You should have received a copy of the GNU Lesser General Public +# License along with the GNU C Library; if not, see +# <http://www.gnu.org/licenses/>. + +$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) 2017 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"; + } + if (open (LOCS, "env LD_TRACE_LOADED_OBJECTS=1 $prog |")) { + while (<LOCS>) { + chop; + if (/^.*=> (.*) .(0x[0123456789abcdef]*).$/) { + $locs{$1} = $2; + } + } + close (LOCS); + } +} else { + die "Wrong number of arguments, run $progname --help for help."; +} + +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 "" && open (ADDR, "addr2line -e $binary $addr|")) { + my $line = <ADDR>; + chomp $line; + close (ADDR); + if ($line ne '??:0') { + $cache{$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}); + if ($locs{$prog} ne "") { + $searchaddr = sprintf "%#x", $addr - $locs{$prog}; + } else { + $searchaddr = $addr; + $prog = $binary; + } + if ($binary ne "" && open (ADDR, "addr2line -e $prog $searchaddr|")) { + my $line = <ADDR>; + chomp $line; + close (ADDR); + if ($line ne '??:0') { + $cache{$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 "" && open (ADDR, "addr2line -e $binary $addr|")) { + my $line = <ADDR>; + chomp $line; + close (ADDR); + if ($line ne '??:0') { + $cache{$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; |