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我正在尝试为服务器生成一个调用图以用于文档目的。不适用于任何类型的分析。

我生成了输出:

sudo valgrind --tool=callgrind --dump-instr=yes /opt/ats-trunk/bin/traffic_server

并使用:http ://code.google.com/p/jrfonseca/wiki/Gprof2Dot 转换为 .dot 文件,但这包含太多信息,无法用作文档。

我想过滤掉对 libc、libstdc++、libtcl、libhwloc 等库的调用。

nb:我一直试图找出无用的库,但这似乎很麻烦而且充其量是不完整的。

非常感谢您提前回答。

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1 回答 1

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在这里震耳欲聋的沉默之后,实际上我问的所有地方,我都转向了 valgrind-users@ML。这是线程:

http://sourceforge.net/mailarchive/forum.php?thread_name=e847e3a9-0d10-4c5e-929f-51258ecf9dfc%40iris&forum_name=valgrind-users

Josef 的回复非常有帮助,在#perl 的耐心帮助下,我编写了一个脚本,帮助我过滤掉调用图中不需要的库。

该脚本依赖于告诉 callgrind 更加冗长:

valgrind --tool=callgrind --dump-instr=yes --compress-pos=no \
  --compress-strings=no /opt/ats-trunk/bin/traffic_server

这样,它将生成字符串而不是参考编号,从而更容易解析:

#!/usr/bin/perl

use Modern::Perl;
require File::Temp;

my $cob = qr{^cob=/(?:usr/)?lib};
my $ob = qr{^ob=/(?:usr/)?lib/};
my $calls = qr{^calls=};

open (my $fh, '<', $ARGV[0]) or die $!;
my $tmp = File::Temp->new(UNLINK => 1);

## Skip all external libraries, as defined by $ob
while (readline $fh) {
    if (/$ob/ ) {
        # skip the entire ob= section we don't need.
        0 while defined($_ = readline $fh) && !/^ob=/;

        # put the last line back, we read too far
        seek($fh, -length($_), 1);
    } else {
        print $tmp $_;
    }
}
close ($fh);

## Skip all calls to external libraries, as defined by $cob
my $tmpname = $tmp->filename;
open ($tmp, '<', $tmpname) or die $!;
while (readline $tmp) {
    if (/$cob/) {

        # skip until we find a line starting with calls=
        # skip that line too
        0 while defined($_ = readline $tmp) && !/$calls/;

        # then we skip until we either hit ^word= or an empty line.
        # In other words: skip all lines that start with 0x
        0 while defined($_ = readline $tmp) && /^0x/;

        # put the last line back, we read too far
        seek($tmp, -length($_), 1);
    }  else {
       print;
    }
}
于 2011-10-14T23:56:54.193 回答