Hello,

I have a process with several threads of which each needs to eliminate an element from a shared array when it is done with it. It is referencing the elements by index only. The thread number is the same as the index. I have the threading working, my class and its methods are working, but the array manipulation is not.

How do you remove an element from a shared array? 

our @aryItems : shared;   # Update: line added after initial posting

# Here is the Foo class
package Foo;
use threads;         # pull in threading routines
use threads::shared; # and variable sharing routines

# create a new Foo object
sub new {
    my $pkg = shift;
    my $self = { @_,
                 ...
               };
 
    return bless($self, $pkg);
}

sub run {
    my $self          = Foo->new(@_);
    my $id            = $self->{id};
    ...

    print "Hello from thread $id.\n";
    print "Item $aryItems[$id]\n";
    splice(@aryItems, $id);
    
    return 1;
}

[download]
In Foo::run() I cannot get the splice to work. The output/error is as follows: 
Hello from thread 0.
Item 1153.xml
thread failed to start: Splice not implemented for shared arrays at C:
+/Perl/lib/
threads/shared.pm line 37.
Hello from thread 1.
Item 400.xml
thread failed to start: Splice not implemented for shared arrays at C:
+/Perl/lib/
threads/shared.pm line 37.
Hello from thread 2.
Item 1175.xml
thread failed to start: Splice not implemented for shared arrays at C:
+/Perl/lib/
threads/shared.pm line 37.
Hello from thread 3.
Item 1238.xml
thread failed to start: Splice not implemented for shared arrays at C:
+/Perl/lib/
threads/shared.pm line 37.

[download]

Thanks :)

-P0w3rK!d

Added line per author - dvergin 2003-05-15

In reply to Threading: Removing an element from a shared array by P0w3rK!d

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