in reply to Accessing class data from a second thread

you have to create the variable as shared using the shared attribute, in the form of 

my $CurrentTagList : shared = TagList->new();

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Also within the Taglist class you have to use threads::shared's bless function so blessing propagates across all threads

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Re^2: Accessing class data from a second thread
by Anonymous Monk on Jun 21, 2011 at 02:25 UTC

    I'm stuck with "Also within the Taglist class you have to use threads::shared's bless function so blessing propagates across all threads".

    Using:

    my $CurrentTagList : shared = TagList->new();

    initially returned an error but after changing the constructor for TagList to:

    package TagList;
sub new {
    my $class = shift;
    my @self : shared = @_;    
    my _TagList = [],
    return bless \@self, $class;
}

    [download]

    this at least executes but fails when

    my $array = $self->{'_TagList'};

    executes inside a sub which is part of the TagList class with the error "Not a HASH reference".

    I'm guessing my error still lays in the constructor but I'm at a lost there.

    Thoughts??

    Thanks for all your help!

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Re^2: Accessing class data from a second thread
by Anonymous Monk on Jun 20, 2011 at 18:13 UTC

    Thank you very much for your response.

    I followed (and have tried previously) your first comment but get the error: "Invalid value for shared scalar".

    Now I'm assuming the second part of what you said will resolve this but I don't quite follow. Can you please clarify what I need to do inside the class?

    Thanks again!

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      Are you assigning a hash or array reference to a shared scalar?

      If so, be sure to share the hash/array before taking the reference.

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        I am assigning an instance of a class to the shared scalar.
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