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Leak(3)		      User Contributed Perl Documentation	       Leak(3)

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

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>

perl v5.32.1			  2004-03-18			       Leak(3)

NAME | SYNOPSIS | DESCRIPTION | CAVEATS | HISTORY | AUTHOR

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