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#!/usr/bin/perl
use warnings;
use strict;
use vars qw($NUM_OF_EVENTS $USE_EVENT $USE_IO_POLL);
use Time::HiRes qw(gettimeofday tv_interval);
sub die_usage {
my $usage = "\n";
if(my $msg = shift) {
$usage .= "ERROR: $msg\n\n";
}
$usage .= <<EOU;
Usage: $0 < --events=NUM > < --use-event > < --use-io-poll >
Options:
--help : this help text
--events=NUM : the number of events to run. defaults to 10000
--use-event : use Event.pm's internal event loop
--use-io-poll : use IO::Poll.pm's internal event loop
if --use-event or --use-io-poll are not chosen, POE's native event loop
will be used.
EOU
my_die($usage);
}
sub my_die ($) {
print STDERR $_[0]."\n";
exit 1;
}
sub late_use ($) {
my $module = shift;
eval "use $module;";
my_die($@) if ($@);
}
BEGIN {
use Getopt::Long;
$USE_EVENT = 0;
$USE_IO_POLL = 0;
my $help = 0;
$NUM_OF_EVENTS = 10000;
GetOptions( 'events=i' => \$NUM_OF_EVENTS,
'use-event+' => \$USE_EVENT,
'use-io-poll+' => \$USE_IO_POLL,
'help+' => \$help,
);
die_usage() if $help;
die_usage('Both use-event and use-io-poll are selected. Only one loop type may be chosen.') if($USE_EVENT + $USE_IO_POLL > 1);
if($USE_EVENT) {
late_use('Event');
} elsif ($USE_IO_POLL) {
late_use('IO::Poll');
}
late_use('POE');
}
my($tr_start, $tr_stop);
POE::Session->create(
inline_states => {
_start => sub { $tr_start = [gettimeofday]; $_[KERNEL]->yield('iterate', 0) },
_stop => sub { $tr_stop = [gettimeofday] },
iterate => sub { $_[KERNEL]->yield('iterate', ++$_[ARG0]) unless $_[ARG0] > $NUM_OF_EVENTS; }
}
);
$POE::Kernel::poe_kernel->run();
my $elapsed = tv_interval($tr_start, $tr_stop);
my $event_avg = int($NUM_OF_EVENTS/$elapsed);
print "Events per second: $event_avg\n";
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