Re: Benchmarks of XML Parsers

[Anonymous Monk]

Which version of expat (for XML::Parser) and xml2(for XML::LibXML) did you use?

[ikegami]

How do I find that out? (Debian system)

Update: I'm guessing libexpat 1.0.0 and libxml2 2.6.27 from the file names I found in /usr/lib:

/usr/lib/libexpat.so.0 -> libexpat.so.1
/usr/lib/libexpat.so.1 -> libexpat.so.1.0.0
/usr/lib/libexpat.so.1.0.0

/usr/lib/libxml2.so -> libxml2.so.2.6.27
/usr/lib/libxml2.so.2 -> libxml2.so.2.6.27
/usr/lib/libxml2.so.2.6.27

Update: um.. The package manager says libexpat1 1.95.8(-3.4) and libxml2 2.6.27(-dfsg-6) were installed. Is libexpat1 something different?

[Anonymous Monk]

Not sure, I would check with ldd

#!/usr/bin/perl --

use strict;
use warnings;

use XML::LibXML;
use XML::Parser;

for my $so( grep /xml/i, @DynaLoader::dl_shared_objects ){
  print "$so\n";
  print `ldd $so\n`;
}
__END__

[ikegami]

[ You linked to the Lego Digital Designer *giggle* ]

That array is empty (!?), confirmed with Data::Dumper.

Update: There appears to be a line missing from my install of DynaLoader (!!!). Once I added it, I got:

/usr/lib/perl5/auto/XML/LibXML/Common/Common.so
        linux-gate.so.1 =>  (0xffffe000)
        libxml2.so.2 => /usr/lib/libxml2.so.2 (0xb7ded000)
        libz.so.1 => /usr/lib/libz.so.1 (0xb7dd9000)
        libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb7dc7
+000)
        libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0xb7da2000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7c71000)
        libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb7c6d000)
        /lib/ld-linux.so.2 (0x80000000)
/home/ikegami/lib/perl5/i486-linux-gnu-thread-multi/auto/XML/LibXML/Li
+bXML.so
        linux-gate.so.1 =>  (0xffffe000)
        libxml2.so.2 => /usr/lib/libxml2.so.2 (0xb7df4000)
        libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0xb7dbd000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7c8c000)
        libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb7c88000)
        libz.so.1 => /usr/lib/libz.so.1 (0xb7c74000)
        /lib/ld-linux.so.2 (0x80000000)
/usr/lib/perl5/auto/XML/Parser/Expat/Expat.so
        linux-gate.so.1 =>  (0xffffe000)
        libexpat.so.1 => /usr/lib/libexpat.so.1 (0xb7f40000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7e0f000)
        libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb7dfd
+000)
        /lib/ld-linux.so.2 (0x80000000)

That doesn't seem to include any version info?

Update: The bug was fixed in DynaLoader 1.05 which comes with Perl 5.8.{4,5,6,7,8,9}. I'm using Perl 5.8.8, but DynaLoader is just 1.04. WTF?!