This is what i came up with based on your recommendations. Works nicely. Thanks a lot. (Obviously this includes a couple of choices specific to my own requirements.) One nice thing is the $DB::record variable. Which can be used to enable profiling from the client code. This is useful if you only want to profile a small section of code. 

{
    package DB;
    use B;
    use Time::HiRes qw(time);
    use Data::Dump::Streamer;

    BEGIN {
        my $PROFILE = "$0.profile";
        open PROFILE, ">", $PROFILE or die "$PROFILE:$!";
    }
    sub DB { }
    my $last;

    my @elapse= (0);
    my %total;
    my %only;
    my %name;
    my %hits;
    our $record=0;

    sub sub
    {
        my $name = $name{$sub};
        unless ($name) {
            if ( ref $sub ) {
                my $Bobj = B::svref_2object($sub);
                $name = $Bobj->GV->NAME();
            } else {
                $name=$sub;
            }
            $name =~ s/^main::/::/;
            $name{$sub}=$name;
        }
        return &$sub if !$record or $name=~/^(?:__ANON__|Data::Dump::S
+treamer)/;#DB[ID]|
        #printf PROFILE "> %s%s\n", ( " " x @elapse ), $name;
        push @elapse, 0;
        my $start_time=time();
        my (@array,$scalar);
        if (wantarray) {
            @array = &$sub;
        } elsif ( defined wantarray ) {
            $scalar = &$sub;
        } else {
            &$sub;
        }
        my $time=time()-$start_time;

        $total{$name} += $time;
        $only{$name} += $time;
        $only{$name} -= pop @elapse;
        printf PROFILE "< %s%s\t<%.6f>\n", ( " " x @elapse ), $name,$t
+ime;
        $elapse[-1] += $time;
        $hits{$name}++;
        if (wantarray) {
            return @array;
        } elsif ( defined wantarray ) {
            return $scalar;
        } else {
            return;
        }
    }
    END {
              open my $out,">","$0.callstats" or die $!;
              local $record;
              Dump(\%total,\%only,\%hits)->Names(qw(*total *only *hits
+))
                                         ->To($out)->Out();
              close $out,PROFILE;
        }
}
1
__END__

[download]

---
demerphq

    First they ignore you, then they laugh at you, then they fight you, then you win.
    -- Gandhi

In reply to Re^2: Stats from a Handrolled Profiler by demerphq
in thread Stats from a Handrolled Profiler by demerphq

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