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#!/usr/bin/perl
use warnings;
use strict;
use utf8;
use open qw(:std :utf8);
use lib qw(blib/lib blib/arch);
use Getopt::Std qw(getopts);
use Time::HiRes qw(time);
use Data::StreamDeserializer;
sub compare_object($$);
sub usage();
sub min(@);
sub max(@);
sub sum(@);
sub avg(@);
$| = 1;
getopts 'hn:b:' => \my %opts or usage;
usage if $opts{h};
my $file = $ARGV[0] or usage;
die "File not found: $file\n" unless -f $file;
my $data = `cat $file`;
my $iterations = $opts{n} || 1000;
my $block_size = $opts{b} || 512;
printf "%s bytes were read\n", length $data;
print "First deserializing by eval...";
my $object = eval $data;
die "Can't eval input data: $@" if $@;
print " done\n";
print "First deserializing by Data::DeSerializer...";
my $dsf = new Data::StreamDeserializer
data => $data, block_size => $block_size;
1 until $dsf->next;
die "Can't deserialize input data: " . $dsf->error if $dsf->is_error;
print " done\n";
print "Check if deserialized objects are same...";
die "deserialized object aren't the same\n"
unless compare_object $dsf->result, $object;
print " done\n";
my (@delay, @delay_dsr);
my $time = time;
printf "\nStarting %d iterations for eval...", $iterations;
for (1 .. $iterations) {
my $start = time;
my $res = eval $data;
push @delay, time - $start;
}
my $eval_time = time - $time;
printf " done (%3.3f seconds)\n", $eval_time;
printf "Starting %d iterations for Data::StreamDeserializer...", $iterations;
$time = time;
my $partcounter = 0;
for (1 .. $iterations) {
my $start = time;
my $dsr = new Data::StreamDeserializer
data => $data, block_size => $block_size;
$partcounter++ until $dsr->next;
$partcounter++;
push @delay_dsr, time - $start;
}
my $ds_time = time - $time;
printf " done (%3.3f seconds)\n", $ds_time;
print "\nEval statistic:\n";
printf "\t%d iterations were done\n", $iterations;
printf "\tmaximum deserialization time: %2.4f seconds\n", max(@delay);
printf "\tminimum deserialization time: %2.4f seconds\n", min(@delay);
printf "\taverage deserialization time: %2.4f seconds\n", avg(@delay);
print "\nStreamDeserializer statistic:\n";
printf "\t%d iterations were done\n", $iterations;
printf "\t%d SUBiterations were done\n", $partcounter;
printf "\t%d bytes in one block in one iteration\n", $block_size;
printf "\tmaximum deserialization time: %2.4f seconds\n", max(@delay_dsr);
printf "\tminimum deserialization time: %2.4f seconds\n", min(@delay_dsr);
printf "\taverage deserialization time: %2.4f seconds\n", avg(@delay_dsr);
printf "\taverage subiteration time: %2.5f seconds\n",
sum(@delay_dsr) / $partcounter;
sub compare_object($$)
{
my ($o1, $o2) = @_;
return 0 unless ref($o1) eq ref $o2;
return $o1 eq $o2 unless ref $o1; # SCALAR
return $o1 eq $o2 if 'Regexp' eq ref $o1; # Regexp
return compare_object $$o1, $$o2 if 'SCALAR' eq ref $o1; # SCALARREF
return compare_object $$o1, $$o2 if 'REF' eq ref $o1; # REF
if ('ARRAY' eq ref $o1) {
return 0 unless @$o1 == @$o2;
for (0 .. $#$o1) {
return 0 unless compare_object $o1->[$_], $o2->[$_];
}
return 1;
}
if ('HASH' eq ref $o1) {
return 0 unless keys(%$o1) == keys %$o2;
for (keys %$o1) {
return 0 unless exists $o2->{$_};
return 0 unless compare_object $o1->{$_}, $o2->{$_};
}
return 1;
}
die ref $o1;
}
sub usage()
{
print <<eof;
usage: perl $0 [OPTIONS] test_file
OPTIONS:
-h - this helpscreen
-n count - iterations (default 1000)
-b count - bytes in one subiteration (default 512),
see perldoc Data::StreamDeserializer
hint: block_size
eof
exit 0;
}
sub min(@) {
my $min = shift;
for (@_) {
$min = $_ if $min > $_;
}
return $min;
}
sub max(@) {
my $max = shift;
for (@_) {
$max = $_ if $max < $_;
}
return $max;
}
sub sum(@)
{
my $sum = 0;
$sum += $_ for @_;
return $sum;
}
sub avg(@)
{
return sum(@_) / @_;
}
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