Re: Plperl functions with OUT parameters crashing each other when used in the same connection

Tom Lane wrote:
> "Philippe Lang" <philippe.lang@attiksystem.ch> writes:
>> Here is a reduced example that shows the problem.
>
> Hm, I'm no Perl guru, but isn't the second script to be
> loaded going to redefine those subroutines that the first
> script defined?  I'm pretty sure that there's not an implicit
> independent namespace for each plperl function.
>
>             regards, tom lane

Hi Tom,

I'm using PGSQL 8.1.4.

I have deleted the subroutines now, but problem remains. Does that mean the variables created inside a plperl function
arealive for the duration of the database connection? 



------------------------------------------------------------
--  FUNCTION: foo1
------------------------------------------------------------
CREATE OR REPLACE FUNCTION public.foo1
(
    IN a    integer,
    IN b    integer,
    OUT c    integer,
    OUT d       integer
)
RETURNS SETOF record
AS

$$

    @i = ('a', 'b');
    @io = ();
    @o = ('c', 'd');

    $c = 0;
    foreach $i (@i) {$input{$i} = @_[$c++]};
    foreach $io (@io) {$input{$io} = @_[$c]; $output{$io} = @_[$c++]};
    foreach $o (@o) {$output{$o} = @_[$c++]};

    $output{'c'} = $input{'a'} + $input{'b'};
    $output{'d'} = $input{'a'} * $input{'b'};

    return_next \%output;

    return undef;

$$

LANGUAGE 'plperl' VOLATILE;

------------------------------------------------------------
--  FUNCTION: foo2
------------------------------------------------------------
CREATE OR REPLACE FUNCTION public.foo2
(
    IN n    varchar(50),
    IN m    varchar(50),
    OUT r    integer,
    OUT s       varchar(50)
)
RETURNS SETOF record
AS

$$

    @i = ('n', 'm');
    @io = ();
    @o = ('r', 's');

    $c = 0;
    foreach $i (@i) {$input{$i} = @_[$c++]};
    foreach $io (@io) {$input{$io} = @_[$c]; $output{$io} = @_[$c++]};
    foreach $o (@o) {$output{$o} = @_[$c++]};

    $output{'r'} = $input{'n'} + $input{'m'};
    $output{'s'} = $input{'n'} * $input{'m'};

    return_next \%output;

    return undef;

$$

LANGUAGE 'plperl' VOLATILE;

------------------------------------------------------------
--  FUNCTION TESTS
------------------------------------------------------------
select * from foo1(45,10);
select * from foo2('45','10');



---------------
Philippe Lang
Attik System