diff options
Diffstat (limited to 'memanalyze.pl')
-rwxr-xr-x | memanalyze.pl | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/memanalyze.pl b/memanalyze.pl deleted file mode 100755 index f16f2d8a9..000000000 --- a/memanalyze.pl +++ /dev/null @@ -1,269 +0,0 @@ -#!/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"; -} |