Has anyone tried using DB_File or SDBM_File or modules of that sort with threads in perl 5.8? I keep getting a segmentation fault when my program exits.

I provided a short code sample that produces the problem on my machine. I don't think it even makes it to the untie. To get rid of the segfault all I have to do is comment out the tie.

Maybe someone could point out something I'm doing wrong, or suggest a module that works better for this. Any advice would be appreciated.

smiles 

#!/usr/bin/perl

use strict;
use threads;
use threads::shared;
use Thread::Queue;
use SDBM_File;
use Fcntl;

# initialize some stuff
my $q = Thread::Queue->new();
my %items : shared;
tie %items,'SDBM_File','itemdb',O_CREAT|O_RDWR,0640 or die "Could not 
+open SDBM file: $!\n";
$items{$_} = 1 for 1..10;

# play with 3 threads
for (1..3) { threads->new(\&ttest) }
my @threadlist = threads->list;
$q->enqueue($_) for 1..10;
$q->enqueue(undef) for @threadlist;
$_->join for @threadlist;

# clean up mess
untie %items;
unlink 'itemdb.pag','itemdb.dir';

sub ttest {
    while (my $qthingie = $q->dequeue) {
        print "$items{$qthingie}\n"
    }
}

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In reply to threads, tie and segmentation fault by petesmiley

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