GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  DEVEL::LEAK (3)

.ds Aq ’

NAME

Devel::Leak - Utility for looking for perl objects that are not reclaimed.

CONTENTS

SYNOPSIS



  use Devel::Leak;
  ... setup code

  my $count = Devel::Leak::NoteSV($handle);

  ... code that may leak

  Devel::Leak::CheckSV($handle);



DESCRIPTION

Devel::Leak has two functions NoteSV and CheckSV.

NoteSV walks the perl internal table of allocated SVs (scalar values) - (which actually contains arrays and hashes too), and records their addresses in a table. It returns a count of these things, and stores a pointer to the table (which is obtained from the heap using malloc()) in its argument.

CheckSV is passed argument which holds a pointer to a table created by NoteSV. It re-walks the perl-internals and calls sv_dump() for any things which did not exist when NoteSV was called. It returns a count of the number of things now allocated.

CAVEATS

Note that you need a perl built with -DDEBUGGING for sv_dump() to print anything, but counts are valid in any perl.

If new things have been created, CheckSV may (also) report additional things which are allocated by the sv_dump() code.

HISTORY

This little utility module was part of Tk until the variable renaming in perl5.005 made it clear that Tk had no business knowing this much about the perl internals.

AUTHOR

Nick Ing-Simmons <nick@ni-s.u-net.com>
Search for    or go to Top of page |  Section 3 |  Main Index


perl v5.20.3 LEAK (3) 2004-03-18

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.