Perl高精度计时器

use strict ;
use Time::HiRes qw(gettimeofday) ;
sub Test
{
# sec: seconds
    # usec: microsecond
    my ($start_sec, $start_usec) = gettimeofday() ;
#======================#
    # Place your code here!#
    #======================#

my ($end_sec, $end_usec) = gettimeofday() ;
# Compute time elipsed
    my $timeDelta = ($end_usec - $start_usec) / 1000 + ($end_sec - $start_sec) * 1000;
print $timeDelta ;
}
&Test() ;
1 ;