99 строки
2.4 KiB
Perl
99 строки
2.4 KiB
Perl
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#!/usr/bin/perl
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#
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# Example input:
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#
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# MEM mprintf.c:1094 malloc(32) = e5718
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# MEM mprintf.c:1103 realloc(e5718, 64) = e6118
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# MEM sendf.c:232 free(f6520)
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do {
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if($ARGV[0] eq "-v") {
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$verbose=1;
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}
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} while (shift @ARGV);
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while(<STDIN>) {
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chomp $_;
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$line = $_;
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if($verbose) {
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print "IN: $line\n";
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}
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if($line =~ /^MEM ([^:]*):(\d*) (.*)/) {
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# generic match for the filename+linenumber
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$source = $1;
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$linenum = $2;
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$function = $3;
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if($function =~ /free\(([0-9a-f]*)/) {
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$addr = $1;
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if($sizeataddr{$addr} <= 0) {
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print "FREE ERROR: No memory allocated: $line\n";
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}
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else {
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$totalmem -= $sizeataddr{$addr};
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$sizeataddr{$addr}=0;
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$getmem{$addr}=""; # forget after a good free()
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}
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}
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elsif($function =~ /malloc\((\d*)\) = ([0-9a-f]*)/) {
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$size = $1;
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$addr = $2;
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$sizeataddr{$addr}=$size;
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$totalmem += $size;
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$getmem{$addr}="$source:$linenum";
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}
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elsif($function =~ /realloc\(([0-9a-f]*), (\d*)\) = ([0-9a-f]*)/) {
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$oldaddr = $1;
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$newsize = $2;
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$newaddr = $3;
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$totalmem -= $sizeataddr{$oldaddr};
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$sizeataddr{$oldaddr}=0;
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$totalmem += $newsize;
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$sizeataddr{$newaddr}=$newsize;
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$getmem{$oldaddr}="";
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$getmem{$newaddr}="$source:$linenum";
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}
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elsif($function =~ /strdup\(([0-9a-f]*)\) \((\d*)\) = ([0-9a-f]*)/) {
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# strdup(a5b50) (8) = df7c0
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$dup = $1;
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$size = $2;
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$addr = $3;
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$getmem{$addr}="$source:$linenum";
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$sizeataddr{$addr}=$size;
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$totalmem += $size;
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}
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else {
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print "Not recognized input line: $function\n";
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}
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}
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else {
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print "Not recognized prefix line: $line\n";
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}
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if($verbose) {
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print "TOTAL: $totalmem\n";
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}
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}
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if(0 == $totalmem) {
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print "No leak found\n";
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exit;
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}
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print "Leak detected: memory still allocated: $totalmem bytes\n";
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for(keys %sizeataddr) {
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$addr = $_;
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$size = $sizeataddr{$addr};
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if($size) {
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print "At $addr, there's $size bytes.\n";
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print " allocated by ".$getmem{$addr}."\n";
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}
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}
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