我正在尝试为文档目的生成服务器的调用图。 不用于任何类型的分析。
我使用:
生成输出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等等库的调用。
n.b。:我一直在努力试图找出无用的库,但这看起来很麻烦且不完整。
非常感谢你提前给出答案。
答案 0 :(得分:8)
在这里震耳欲聋的沉默之后,实际上在我问的每个地方,我都转向了valgrind-users @ ML。这是主题:
Josef的回复非常有帮助,并且在#perl的帮助下我已经整理了一个脚本,帮助我过滤掉我在调用图中不需要的库。
该脚本依赖于告诉callgrind额外详细:
valgrind --tool=callgrind --dump-instr=yes --compress-pos=no \
--compress-strings=no /opt/ats-trunk/bin/traffic_server
这样它会生成字符串而不是引用数字,这使得它更容易解析:
#!/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;
}
}