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|
use warnings;
use strict;
use File::Temp qw(tempfile tempdir);
use Test::More tests => 1;
use lib 'xt/lib';
use ATWDumbbench;
use constant BATCH_SIZE => 1000;
my $bench = ATWDumbbench->new(
target_rel_precision => 0.005,
initial_runs => BATCH_SIZE,
);
my $dir = tempdir( CLEANUP => 1 );
my $template = 'foobar-XXXXXXXX';
for ( 1 .. BATCH_SIZE ) {
my ( $fh, $filename ) = tempfile( $template, DIR => $dir );
print $fh rand();
close($fh);
}
my $regex = qr/^\.\.?$/;
$bench->add_instances(
Dumbbench::Instance::PerlSub->new(
name => 'with grep',
code => sub {
opendir my $dir_h, $dir or die "Cannot open $dir: $!";
my @top_entries = grep { $_ !~ /^\.\.?$/ } readdir $dir_h;
closedir($dir_h);
}
),
Dumbbench::Instance::PerlSub->new(
name => 'with grep and compiled regex',
code => sub {
opendir my $dir_h, $dir or die "Cannot open $dir: $!";
my @top_entries = grep { $_ !~ $regex } readdir $dir_h;
closedir($dir_h);
}
),
Dumbbench::Instance::PerlSub->new(
name => 'with eq',
code => sub {
opendir my $dir_h, $dir or die "Cannot open $dir: $!";
my @temp = readdir($dir_h);
closedir($dir_h);
my @top_entries;
for (@temp) {
next if ( ( $_ eq '.' ) or ( $_ eq '..' ) );
push( @top_entries, $_ );
}
}
),
Dumbbench::Instance::PerlSub->new(
name => 'with enhanced eq',
code => sub {
opendir my $dir_h, $dir or die "Cannot open $dir: $!";
my @temp = readdir($dir_h);
closedir($dir_h);
my @top_entries;
for (@temp) {
next
if ( ( length($_) <= 2 )
and ( ( $_ eq '.' ) or ( $_ eq '..' ) ) );
push( @top_entries, $_ );
}
}
),
Dumbbench::Instance::PerlSub->new(
name => 'with enhanced eq mark2',
code => sub {
opendir my $dir_h, $dir or die "Cannot open $dir: $!";
my @temp = readdir($dir_h);
closedir($dir_h);
my @top_entries;
my $counter = 0;
my $found = 0;
for (@temp) {
$counter++;
if ( ( length($_) <= 2 )
and ( ( $_ eq '.' ) or ( $_ eq '..' ) ) )
{
$found++;
if ( $found < 2 ) {
next;
}
else {
push( @top_entries, splice( @temp, $counter ) );
last;
}
}
push( @top_entries, $_ );
}
}
),
Dumbbench::Instance::PerlSub->new(
name => 'with enhanced eq mark3',
code => sub {
opendir my $dir_h, $dir or die "Cannot open $dir: $!";
my @temp = readdir($dir_h);
closedir($dir_h);
my ( $first, $second );
my $index = 0;
my $found = 0;
for (@temp) {
if ( ( length($_) <= 2 )
and ( ( $_ eq '.' ) or ( $_ eq '..' ) ) )
{
if ( $found < 1 ) {
$first = $index;
$found++;
$index++;
next;
}
else {
$second = $index;
last;
}
}
else {
$index++;
}
}
splice( @temp, $first, 1 );
splice( @temp, ( $second - 1 ), 1 );
}
),
Dumbbench::Instance::PerlSub->new(
name => 'sort and shift',
code => sub {
opendir( my $dir_h, $dir ) or die "Cannot open $dir: $!";
my @top_entries = readdir($dir_h);
closedir($dir_h);
@top_entries = sort(@top_entries);
# removing the '.' and '..' entries
shift(@top_entries);
shift(@top_entries);
}
),
);
note('This will take a while... hang on.');
$bench->run;
diag( $bench->report_as_text );
my $method_name = 'with enhanced eq mark3';
cmp_ok(
$bench->measurements(),
'<=',
$bench->get_measure($method_name),
"'$method_name' is the fastest method."
);
|
