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benchmarking code conditionally

by punkish (Priest)
on Feb 24, 2011 at 02:56 UTC ( #889896=perlquestion: print w/ replies, xml ) Need Help??
punkish has asked for the wisdom of the Perl Monks concerning the following question:

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)); }

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()"; }

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; } }
--

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

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Re: benchmarking code conditionally
by SimonClinch (Chaplain) on Feb 24, 2011 at 14:36 UTC
    use BenchWrapper; my $BENCHMARKIT = 1; ... my $bwo = BenchWrapper -> new( $BENCHMARKIT ); ... sub foo { my $t0 = $bwo -> mark; ... my $t1 = $bwo -> mark; ... } ... package BenchWrapper; use Benchmark; sub new { bless { BENCHMARKIT => shift() }; } sub mark { $_[0] -> { BENCHMARKIT } and return Benchmark -> new; } 1;

    One world, one people

Re: benchmarking code conditionally
by Anonymous Monk on Feb 24, 2011 at 14:54 UTC

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