diff options
Diffstat (limited to 'tests')
| -rwxr-xr-x | tests/memanalyze.pl | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/tests/memanalyze.pl b/tests/memanalyze.pl new file mode 100755 index 000000000..f16f2d8a9 --- /dev/null +++ b/tests/memanalyze.pl @@ -0,0 +1,269 @@ +#!/usr/bin/perl +# +# Example input: +# +# MEM mprintf.c:1094 malloc(32) = e5718 +# MEM mprintf.c:1103 realloc(e5718, 64) = e6118 +# MEM sendf.c:232 free(f6520) + +do { + if($ARGV[0] eq "-v") { + $verbose=1; + } + elsif($ARGV[0] eq "-t") { + $trace=1; + } +} while (shift @ARGV); + +my $maxmem; + +sub newtotal { + my ($newtot)=@_; + # count a max here + + if($newtot > $maxmem) { + $maxmem= $newtot; + } +} + +while(<STDIN>) { + chomp $_; + $line = $_; + + if($line =~ /^MEM ([^:]*):(\d*) (.*)/) { + # generic match for the filename+linenumber + $source = $1; + $linenum = $2; + $function = $3; + + if($function =~ /free\(0x([0-9a-f]*)/) { + $addr = $1; + if($sizeataddr{$addr} == 0) { + print "FREE ERROR: No memory allocated: $line\n"; + } + elsif(-1 == $sizeataddr{$addr}) { + print "FREE ERROR: Memory freed twice: $line\n"; + print "FREE ERROR: Previously freed at: ".$getmem{$addr}."\n"; + } + else { + $totalmem -= $sizeataddr{$addr}; + if($trace) { + print "FREE: malloc at ".$getmem{$addr}." is freed again at $source:$linenum\n"; + printf("FREE: %d bytes freed, left allocated: $totalmem bytes\n", $sizeataddr{$addr}); + } + + newtotal($totalmem); + $frees++; + + $sizeataddr{$addr}=-1; # set -1 to mark as freed + $getmem{$addr}="$source:$linenum"; + + } + } + elsif($function =~ /malloc\((\d*)\) = 0x([0-9a-f]*)/) { + $size = $1; + $addr = $2; + + if($sizeataddr{$addr}>0) { + # this means weeeeeirdo + print "Fucked up debug compile, rebuild curl now\n"; + } + + $sizeataddr{$addr}=$size; + $totalmem += $size; + + if($trace) { + print "MALLOC: malloc($size) at $source:$linenum", + " makes totally $totalmem bytes\n"; + } + + newtotal($totalmem); + $mallocs++; + + $getmem{$addr}="$source:$linenum"; + } + elsif($function =~ /realloc\(0x([0-9a-f]*), (\d*)\) = 0x([0-9a-f]*)/) { + $oldaddr = $1; + $newsize = $2; + $newaddr = $3; + + $totalmem -= $sizeataddr{$oldaddr}; + if($trace) { + printf("REALLOC: %d less bytes and ", $sizeataddr{$oldaddr}); + } + $sizeataddr{$oldaddr}=0; + + $totalmem += $newsize; + $sizeataddr{$newaddr}=$newsize; + + if($trace) { + printf("%d more bytes ($source:$linenum)\n", $newsize); + } + + newtotal($totalmem); + $reallocs++; + + $getmem{$oldaddr}=""; + $getmem{$newaddr}="$source:$linenum"; + } + elsif($function =~ /strdup\(0x([0-9a-f]*)\) \((\d*)\) = 0x([0-9a-f]*)/) { + # strdup(a5b50) (8) = df7c0 + + $dup = $1; + $size = $2; + $addr = $3; + $getmem{$addr}="$source:$linenum"; + $sizeataddr{$addr}=$size; + + $totalmem += $size; + + if($trace) { + printf("STRDUP: $size bytes at %s, makes totally: %d bytes\n", + $getmem{$addr}, $totalmem); + } + + newtotal($totalmem); + $strdups++; + } + else { + print "Not recognized input line: $function\n"; + } + } + # FD url.c:1282 socket() = 5 + elsif($_ =~ /^FD ([^:]*):(\d*) (.*)/) { + # generic match for the filename+linenumber + $source = $1; + $linenum = $2; + $function = $3; + + if($function =~ /socket\(\) = (\d*)/) { + $filedes{$1}=1; + $getfile{$1}="$source:$linenum"; + $openfile++; + } + elsif($function =~ /accept\(\) = (\d*)/) { + $filedes{$1}=1; + $getfile{$1}="$source:$linenum"; + $openfile++; + } + elsif($function =~ /sclose\((\d*)\)/) { + if($filedes{$1} != 1) { + print "Close without open: $line\n"; + } + else { + $filedes{$1}=0; # closed now + $openfile--; + } + } + } + # FILE url.c:1282 fopen("blabla") = 0x5ddd + elsif($_ =~ /^FILE ([^:]*):(\d*) (.*)/) { + # generic match for the filename+linenumber + $source = $1; + $linenum = $2; + $function = $3; + + if($function =~ /fopen\(\"([^\"]*)\"\) = (\(nil\)|0x([0-9a-f]*))/) { + if($2 eq "(nil)") { + ; + } + else { + $fopen{$3}=1; + $fopenfile{$3}="$source:$linenum"; + $fopens++; + } + } + # fclose(0x1026c8) + elsif($function =~ /fclose\(0x([0-9a-f]*)\)/) { + if(!$fopen{$1}) { + print "fclose() without fopen(): $line\n"; + } + else { + $fopen{$1}=0; + $fopens--; + } + } + } + # ADDR url.c:1282 getaddrinfo() = 0x5ddd + elsif($_ =~ /^ADDR ([^:]*):(\d*) (.*)/) { + # generic match for the filename+linenumber + $source = $1; + $linenum = $2; + $function = $3; + + if($function =~ /getaddrinfo\(\) = (\(nil\)|0x([0-9a-f]*))/) { + my $add = $2; + if($add eq "(nil)") { + ; + } + else { + $addrinfo{$add}=1; + $addrinfofile{$add}="$source:$linenum"; + $addrinfos++; + } + } + # fclose(0x1026c8) + elsif($function =~ /freeaddrinfo\(0x([0-9a-f]*)\)/) { + if(!$addrinfo{$1}) { + print "freeaddrinfo() without getaddrinfo(): $line\n"; + } + else { + $addrinfo{$1}=0; + $addrinfos--; + } + } + + + } + else { + print "Not recognized prefix line: $line\n"; + } +} + +if($totalmem) { + print "Leak detected: memory still allocated: $totalmem bytes\n"; + + for(keys %sizeataddr) { + $addr = $_; + $size = $sizeataddr{$addr}; + if($size > 0) { + print "At $addr, there's $size bytes.\n"; + print " allocated by ".$getmem{$addr}."\n"; + } + } +} + +if($openfile) { + for(keys %filedes) { + if($filedes{$_} == 1) { + print "Open file descriptor created at ".$getfile{$_}."\n"; + } + } +} + +if($fopens) { + print "Open FILE handles left at:\n"; + for(keys %fopen) { + if($fopen{$_} == 1) { + print "fopen() called at ".$fopenfile{$_}."\n"; + } + } +} + +if($addrinfos) { + print "IPv6-style name resolve data left at:\n"; + for(keys %addrinfofile) { + if($addrinfo{$_} == 1) { + print "getaddrinfo() called at ".$addrinfofile{$_}."\n"; + } + } +} + +if($verbose) { + print "Mallocs: $mallocs\n", + "Reallocs: $reallocs\n", + "Strdups: $strdups\n", + "Frees: $frees\n"; + + print "Maximum allocated: $maxmem\n"; +} |