I have been getting wierd results from dprofpp involving BEGIN blocks. I get an inordinately high number of call to BEGIN and I don't understand why. I have distilled the problem down to a simple example:

file 1 (T.pm): 
package T;

use strict;

sub foo {
}

1;

[download]


file2 (U.pm): 
package U;

use T;

sub foo {
  T->foo;
}

1;

[download]


file 3 (t.pl): 
#!/usr/local/bin/perl

use strict;

use U;

U->foo() foreach (0..10000);

[download]


When I run t.pl with perl -d:DProf t.pl and then run it though dprofpp tmon.out I get the following results: 

Total Elapsed Time = -0.04006 Seconds
  User+System Time =        0 Seconds
Exclusive Times
%Time ExclSec CumulS #Calls sec/call Csec/c  Name
 0.00   0.040  0.005  10002   0.0000 0.0000  U::BEGIN
 0.00   0.010 -0.005  10001   0.0000      -  T::foo
 0.00   0.000 -0.000      2   0.0000      -  main::BEGIN
 0.00   0.000 -0.000      2   0.0000      -  strict::import
 0.00   0.000 -0.000      2   0.0000      -  strict::bits
 0.00   0.000 -0.000      1   0.0000      -  T::BEGIN

[download]


It appears that I get a BEGIN call in U every time I call a method in T. That doesn't sound right. I also changed the example to use straight function calls instead of class methods and I get the same results. Can anyone familiar with the internals elighten this poor friar?

-pete
"I am Jack's utter lack of disbelief"

In reply to Wierd dprofpp results. by dreadpiratepeter

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