I tend to do a lot of 

sub foo {
    my $t0 = Benchmark->new();
    .. code ..
    my $t1 = Benchmark->new();
    say "foo() took" . timestr(timediff($t1, $t0));
}

sub bar {
    my $t0 = Benchmark->new();
    .. code ..
    my $t1 = Benchmark->new();
    say "bar() took" . timestr(timediff($t1, $t0));
}

[download]

What I really want is all that Benchmark-ing to be switchable. So, if I have a config switch $BENCHMARKIT = 1;, all that Benchmark nonsense should run, including printing out the messages. However, if I turn it off with $BENCHMARKIT = 0;, then it should all be skipped.

How do I go about accomplishing the above?

New note: I have now deployed Log::Dispatch to do my logging to file or screen or both, replacing my code below. Still seeking wisdom for the benchmarking query above.

Additional note: Fwiw, I do something similar with my homemade debugging. Instead of 

sub foo {
    say "Starting foo() with yadda";
    .. code ..
    say "Now doing stuff";
    .. code ..
    say "Now munging";
    say "Done with foo()";
}

[download]

I do something like so

my $DEBUG = 1;

sub foo {
    logit "Starting foo() with yadda";
    .. code ..
    logit "Now doing stuff";
    .. code ..
    logit "Now munging";
    logit "Done with foo()";
}

sub logit {
     my ($msg) = @_;

     if ($DEBUG) {
          say $msg;
     }
}

[download]
--

when small people start casting long shadows, it is time to go to bed

In reply to benchmarking code conditionally by punkish

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