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

From: "Philippe Lang" <philippe(dot)lang(at)attiksystem(dot)ch>
To: <pgsql-general(at)postgresql(dot)org>
Subject: Plperl functions with OUT parameters crashing each other when used in the same connection
Date: 2006-09-04 11:04:51
Message-ID: 6C0CF58A187DA5479245E0830AF84F421D1159@poweredge.attiksystem.ch
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Hi,

I've got a strange bug with two plperl functions using OUT parameters: with a fresh ODBC or pgAdmin connection, I can call the first function, but then all further calls to the second function fail, or call the the second function, but then all further calls to the first function fail. Even more strange: when the second call fails, the message changes at each new try, mentioning one of the variables used as OUT parameters in the other function. Something is apprently not released from memory between each calls.

I'm using plperlu further in the program, with CPAN libraries; is the mix between plperl and plperlu forbidden, or can this be a "plperlU" effect?

Thanks for your help,

Cheers,

------------------------------------------------------------
-- FUNCTION: volets_fiche_fab_1
------------------------------------------------------------
CREATE OR REPLACE FUNCTION public.volets_fiche_fab_1
(
IN id_commande int4,

OUT pos int4,
OUT quant int4,
OUT nbre_vtx int4,
OUT nbre_vtx_total int4,
OUT larg_maconnerie int4,
OUT haut_maconnerie int4,
OUT larg_vtx varchar(20),
OUT haut_vtx int4,
OUT ouv int4,
OUT couvre_joints text,
OUT coupe_verticale text,
OUT vide_interieur varchar(20),
OUT typ varchar(20)
)
RETURNS SETOF record
AS

$$

#----------------------------------------------------------------------------
#-- Configuration des paramètres de la fonction
#----------------------------------------------------------------------------
@i = ( 'id_commande'
);

@io = ();

@o = ( 'pos',
'quant',
'nbre_vtx',
'nbre_vtx_total',
'larg_maconnerie',
'haut_maconnerie',
'larg_vtx',
'haut_vtx',
'ouv',
'couvre_joints',
'coupe_verticale',
'vide_interieur',
'typ'
);

#----------------------------------------------------------------------------
#-- Préparation des paramètres de la fonction
#----------------------------------------------------------------------------
&start_sub(@_);

#----------------------------------------------------------------------------
#-- Création de la fiche de fabrication
#----------------------------------------------------------------------------
$lignes_query = 'SELECT * FROM lignes WHERE id_commande = ' . $input{'id_commande'} . ' ORDER BY pos;';
$lignes = spi_exec_query($lignes_query);
$lignes_nrows = $lignes->{processed};
foreach my $lignes_rn (0 .. $lignes_nrows - 1)
{
# Fabrication de la ligne
$fab = spi_exec_query('SELECT * FROM volets_fab(' . $lignes->{rows}[$lignes_rn]->{'id'} . ');');
$fab_nrows = $fab->{processed};

# Recherches des éventuels vantaux de gauche et droite
my $vtxg;
my $vtxd;
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Largeur de vantail gauche') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $vtxg = $fab->{rows}[$j]->{'larg'}; }
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Largeur de vantail droite') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $vtxd = $fab->{rows}[$j]->{'larg'}; }

# Position
$output{'pos'} = $lignes->{rows}[$lignes_rn]->{'pos'};

# Quantité
$output{'quant'} = $lignes->{rows}[$lignes_rn]->{'quant'};

# Nombre de vantaux
$output{'nbre_vtx'} = $lignes->{rows}[$lignes_rn]->{'nbre_vtx'};

# Nombre de vantaux total
$output{'nbre_vtx_total'} = $lignes->{rows}[$lignes_rn]->{'nbre_vtx'} * $lignes->{rows}[$lignes_rn]->{'quant'};

# Largeur de maçonnerie
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Largeur de maçonnerie') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $output{'larg_maconnerie'} = $fab->{rows}[$j]->{'larg'}; }
else { $output{'larg_maconnerie'} = ''; };

# Hauteur de maçonnerie
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Hauteur de maçonnerie') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $output{'haut_maconnerie'} = $fab->{rows}[$j]->{'haut'}; }
else { $output{'haut_maconnerie'} = ''; };

# Largeur de vantail
if (defined($vtxg) and defined($vtxd))
{
# Vantaux asymétriques
$output{'larg_vtx'} = $vtxg . " / " . $vtxd;
}
else
{
# Vantaux symétriques
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Largeur de vantail') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $output{'larg_vtx'} = $fab->{rows}[$j]->{'larg'}; }
else { $output{'larg_vtx'} = ''; };
}

# Hauteur de vantail
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Hauteur de vantail') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $output{'haut_vtx'} = $fab->{rows}[$j]->{'haut'}; }
else { $output{'haut_vtx'} = ''; };

# Type d'ouverture
$output{'ouv'} = $lignes->{rows}[$lignes_rn]->{'ouv'};

# Image des couvre-joints
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Couvre-joints') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $output{'couvre_joints'} = $fab->{rows}[$j]->{'image'}; }
else { $output{'couvre_joints'} = ''; };

# Image de la coupe verticape
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Coupe verticale') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $output{'coupe_verticale'} = $fab->{rows}[$j]->{'image'}; }
else { $output{'coupe_verticale'} = ''; };

# Vide intérieur
if (defined($vtxg) and defined($vtxd))
{
# Vantaux asymétriques
$output{'vide_interieur'} = ($vtxg - 106) . " / " . ($vtxd - 106);
}
else
{
# Vantaux symétriques
for ($j = 0; ($fab->{rows}[$j]->{'article'} ne 'Largeur de vantail') and ($j < $fab_nrows); $j = $j + 1) {};
if ($j < $fab_nrows) { $output{'vide_interieur'} = $fab->{rows}[$j]->{'larg'} - 106; }
else { $output{'vide_interieur'} = ''; };
}

# Type de volet
$output{'typ'} = $lignes->{rows}[$lignes_rn]->{'typ'};

# Sortie
ret(@_);
}

#----------------------------------------------------------------------------
#-- Helper functions
#----------------------------------------------------------------------------
end_sub(@_);

sub start_sub
{
init(@_);
}

sub end_sub
{
return undef;
}

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

sub ret
{
while (($key, $value) = each %output) {if (!defined($value)) {elog(ERROR, 'Valeur indéfinie pour ' . $key)}};
return_next \%output;
init(@_);
}

$$

LANGUAGE 'plperl' VOLATILE;

------------------------------------------------------------
-- FUNCTION: volets_fiche_fab_2
------------------------------------------------------------
CREATE OR REPLACE FUNCTION public.volets_fiche_fab_2
(
IN id_commande int4,

OUT pos int4,
OUT article varchar(50),
OUT montage varchar(50),
OUT quant int4,
OUT long int4,
OUT larg int4,
OUT haut int4
)
RETURNS SETOF record
AS

$$

#----------------------------------------------------------------------------
#-- Configuration des paramètres de la fonction
#----------------------------------------------------------------------------
@i = ( 'id_commande'
);

@io = ();

@o = ( 'pos',
'article',
'montage',
'quant',
'long',
'larg',
'haut'
);

#----------------------------------------------------------------------------
#-- Préparation des paramètres de la fonction
#----------------------------------------------------------------------------
&start_sub(@_);

#----------------------------------------------------------------------------
#-- Création de la fiche de fabrication
#----------------------------------------------------------------------------
$lignes_query = 'SELECT * FROM lignes WHERE id_commande = ' . $input{'id_commande'} . ' ORDER BY pos;';
$lignes = spi_exec_query($lignes_query);
$lignes_nrows = $lignes->{processed};
foreach my $lignes_rn (0 .. $lignes_nrows - 1)
{
# Fabrication de la ligne
$fab = spi_exec_query('SELECT * FROM volets_fab(' . $lignes->{rows}[$lignes_rn]->{'id'} . ');');
$fab_nrows = $fab->{processed};

# On passe en revue l'éclaté des pièces de la ligne
for ($j = 0; $j < $fab_nrows; $j = $j + 1)
{
if (($fab->{rows}[$j]->{'article'} =~ /^(Montant|Traverse|Palette|Panneau|Baguette|Couvre-joint)/) &&
($fab->{rows}[$j]->{'t'} eq 'E'))
{
$output{'pos'} = $lignes->{rows}[$lignes_rn]->{'pos'};
$output{'article'} = $fab->{rows}[$j]->{'article'};
$output{'montage'} = $fab->{rows}[$j]->{'montage'};
$output{'quant'} = $fab->{rows}[$j]->{'quant'};
$output{'long'} = $fab->{rows}[$j]->{'long'};
$output{'larg'} = $fab->{rows}[$j]->{'larg'};
$output{'haut'} = $fab->{rows}[$j]->{'haut'};
ret(@_);
}
}
}

#----------------------------------------------------------------------------
#-- Helper functions
#----------------------------------------------------------------------------
end_sub(@_);

sub start_sub
{
init(@_);
}

sub end_sub
{
return undef;
}

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

sub ret
{
#while (($key, $value) = each %output) {if (!defined($value)) {elog(ERROR, 'Valeur indéfinie pour ' . $key)}};
return_next \%output;
init(@_);
}

$$

LANGUAGE 'plperl' VOLATILE;

----------------------------------
Philippe Lang, Ing. Dipl. EPFL
Attik System
rte de la Fonderie 2
1700 Fribourg
Switzerland
http://www.attiksystem.ch

Tel: +41 (26) 422 13 75
Fax: +41 (26) 422 13 76

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