| #!/usr/bin/env perl |
| #*************************************************************************** |
| # _ _ ____ _ |
| # Project ___| | | | _ \| | |
| # / __| | | | |_) | | |
| # | (__| |_| | _ <| |___ |
| # \___|\___/|_| \_\_____| |
| # |
| # Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al. |
| # |
| # This software is licensed as described in the file COPYING, which |
| # you should have received as part of this distribution. The terms |
| # are also available at https://curl.haxx.se/docs/copyright.html. |
| # |
| # You may opt to use, copy, modify, merge, publish, distribute and/or sell |
| # copies of the Software, and permit persons to whom the Software is |
| # furnished to do so, under the terms of the COPYING file. |
| # |
| # This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| # KIND, either express or implied. |
| # |
| ########################################################################### |
| # |
| # Example input: |
| # |
| # MEM mprintf.c:1094 malloc(32) = e5718 |
| # MEM mprintf.c:1103 realloc(e5718, 64) = e6118 |
| # MEM sendf.c:232 free(f6520) |
| |
| my $mallocs=0; |
| my $callocs=0; |
| my $reallocs=0; |
| my $strdups=0; |
| my $wcsdups=0; |
| my $showlimit; |
| my $sends=0; |
| my $recvs=0; |
| my $sockets=0; |
| |
| while(1) { |
| if($ARGV[0] eq "-v") { |
| $verbose=1; |
| shift @ARGV; |
| } |
| elsif($ARGV[0] eq "-t") { |
| $trace=1; |
| shift @ARGV; |
| } |
| elsif($ARGV[0] eq "-l") { |
| # only show what alloc that caused a memlimit failure |
| $showlimit=1; |
| shift @ARGV; |
| } |
| else { |
| last; |
| } |
| } |
| |
| my $maxmem; |
| |
| sub newtotal { |
| my ($newtot)=@_; |
| # count a max here |
| |
| if($newtot > $maxmem) { |
| $maxmem= $newtot; |
| } |
| } |
| |
| my $file = $ARGV[0]; |
| |
| if(! -f $file) { |
| print "Usage: memanalyze.pl [options] <dump file>\n", |
| "Options:\n", |
| " -l memlimit failure displayed\n", |
| " -v Verbose\n", |
| " -t Trace\n"; |
| exit; |
| } |
| |
| open(FILE, "<$file"); |
| |
| if($showlimit) { |
| while(<FILE>) { |
| if(/^LIMIT.*memlimit$/) { |
| print $_; |
| last; |
| } |
| } |
| close(FILE); |
| exit; |
| } |
| |
| |
| my $lnum=0; |
| while(<FILE>) { |
| chomp $_; |
| $line = $_; |
| $lnum++; |
| if($line =~ /^LIMIT ([^ ]*):(\d*) (.*)/) { |
| # new memory limit test prefix |
| my $i = $3; |
| my ($source, $linenum) = ($1, $2); |
| if($trace && ($i =~ /([^ ]*) reached memlimit/)) { |
| print "LIMIT: $1 returned error at $source:$linenum\n"; |
| } |
| } |
| elsif($line =~ /^MEM ([^ ]*):(\d*) (.*)/) { |
| # generic match for the filename+linenumber |
| $source = $1; |
| $linenum = $2; |
| $function = $3; |
| |
| if($function =~ /free\((\(nil\)|0x([0-9a-f]*))/) { |
| $addr = $2; |
| if($1 eq "(nil)") { |
| ; # do nothing when free(NULL) |
| } |
| elsif(!exists $sizeataddr{$addr}) { |
| 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{$addr}>0) { |
| # this means weeeeeirdo |
| print "Mixed debug compile ($source:$linenum at line $lnum), rebuild curl now\n"; |
| print "We think $sizeataddr{$addr} bytes are already allocated at that memory address: $addr!\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 =~ /calloc\((\d*),(\d*)\) = 0x([0-9a-f]*)/) { |
| $size = $1*$2; |
| $addr = $3; |
| |
| $arg1 = $1; |
| $arg2 = $2; |
| |
| if($sizeataddr{$addr}>0) { |
| # this means weeeeeirdo |
| print "Mixed debug compile, rebuild curl now\n"; |
| } |
| |
| $sizeataddr{$addr}=$size; |
| $totalmem += $size; |
| |
| if($trace) { |
| print "CALLOC: calloc($arg1,$arg2) at $source:$linenum", |
| " makes totally $totalmem bytes\n"; |
| } |
| |
| newtotal($totalmem); |
| $callocs++; |
| |
| $getmem{$addr}="$source:$linenum"; |
| } |
| elsif($function =~ /realloc\((\(nil\)|0x([0-9a-f]*)), (\d*)\) = 0x([0-9a-f]*)/) { |
| my ($oldaddr, $newsize, $newaddr) = ($2, $3, $4); |
| |
| $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); |
| $strdups++; |
| } |
| elsif($function =~ /wcsdup\(0x([0-9a-f]*)\) \((\d*)\) = 0x([0-9a-f]*)/) { |
| # wcsdup(a5b50) (8) = df7c0 |
| |
| $dup = $1; |
| $size = $2; |
| $addr = $3; |
| $getmem{$addr}="$source:$linenum"; |
| $sizeataddr{$addr}=$size; |
| |
| $totalmem += $size; |
| |
| if($trace) { |
| printf("WCSDUP: $size bytes at %s, makes totally: %d bytes\n", |
| $getmem{$addr}, $totalmem); |
| } |
| |
| newtotal($totalmem); |
| $wcsdups++; |
| } |
| 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++; |
| $sockets++; # number of socket() calls |
| } |
| elsif($function =~ /socketpair\(\) = (\d*) (\d*)/) { |
| $filedes{$1}=1; |
| $getfile{$1}="$source:$linenum"; |
| $openfile++; |
| $filedes{$2}=1; |
| $getfile{$2}="$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 =~ /f[d]*open\(\"(.*)\",\"([^\"]*)\"\) = (\(nil\)|0x([0-9a-f]*))/) { |
| if($3 eq "(nil)") { |
| ; |
| } |
| else { |
| $fopen{$4}=1; |
| $fopenfile{$4}="$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; |
| $fopens--; |
| } |
| } |
| } |
| # GETNAME url.c:1901 getnameinfo() |
| elsif($_ =~ /^GETNAME ([^ ]*):(\d*) (.*)/) { |
| # not much to do |
| } |
| # SEND url.c:1901 send(83) = 83 |
| elsif($_ =~ /^SEND ([^ ]*):(\d*) (.*)/) { |
| $sends++; |
| } |
| # RECV url.c:1901 recv(102400) = 256 |
| elsif($_ =~ /^RECV ([^ ]*):(\d*) (.*)/) { |
| $recvs++; |
| } |
| |
| # ADDR url.c:1282 getaddrinfo() = 0x5ddd |
| elsif($_ =~ /^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"; |
| $addrinfos++; |
| } |
| if($trace) { |
| printf("GETADDRINFO ($source:$linenum)\n"); |
| } |
| } |
| # fclose(0x1026c8) |
| elsif($function =~ /freeaddrinfo\(0x([0-9a-f]*)\)/) { |
| if(!$addrinfo{$1}) { |
| print "freeaddrinfo() without getaddrinfo(): $line\n"; |
| } |
| else { |
| $addrinfo{$1}=0; |
| $addrinfos--; |
| } |
| if($trace) { |
| printf("FREEADDRINFO ($source:$linenum)\n"); |
| } |
| } |
| |
| } |
| else { |
| print "Not recognized prefix line: $line\n"; |
| } |
| } |
| close(FILE); |
| |
| if($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", |
| "Callocs: $callocs\n", |
| "Strdups: $strdups\n", |
| "Wcsdups: $wcsdups\n", |
| "Frees: $frees\n", |
| "Sends: $sends\n", |
| "Recvs: $recvs\n", |
| "Sockets: $sockets\n", |
| "Allocations: ".($mallocs + $callocs + $reallocs + $strdups + $wcsdups)."\n", |
| "Operations: ".($mallocs + $callocs + $reallocs + $strdups + $wcsdups + $sends + $recvs + $sockets)."\n"; |
| |
| print "Maximum allocated: $maxmem\n"; |
| } |