On Thu, 2004-01-29 at 19:33, Tim Wood wrote:
> 1. Can one send events from one thread (that has not called
> POE::Kernel->run()) to a POE loop running in another thread? Let's
> say thread A uses POE, creates a POE::Session, saves $_[KERNEL] in a
> global, then calls POE::Kernel->run(). Thread B waits for the saved
> Kernel reference to appear (polling loop OK), and calls
> $savedKernelRef->post(...). Will this work? If not, what is the
> technique for messaging a POE loop from outside POE? Is that allowed?
>
> 2. How do I get a reference to "self" inside an event handler? I
> found the following doesn't work:
> sub myEventHandler {
> my $self = shift;
> doSomething($_[ARG0]); # WRONG; ARG0 doesn't point to orig. 1st
> argument anymore
> ...
> Instead I've been saving a reference to the object that defines the
> session & event handlers in $_[HEAP]->{'myPOEObject'}. Is that the
> best way?
# object method (constructor)
sub new {
my $type = ref($_[0]) ? ref(shift) : shift;
# ... set up your data
my $self = { interval => 5 };
bless $self, $type;
}
# object method, starts POE session, returns it
sub poe_session {
my $self = shift;
POE::Session->create(
object_states => [qw( _start _stop process_submissions )]
)
}
# POE events
sub _start { $_[KERNEL]->yield('process_submissions'); }
sub _stop { print "all done\n"; }
# can submit events regardless of POE session status
# object method
sub submit_event {
my( $self, $submission ) = @_;
push( @{$self->{events}}, $submission );
}
# rips through the list of submitted events when POE
# is running
# POE event
sub process_submissions {
my( $self, $kernel ) = @_[ OBJECT, KERNEL ];
while ( my $submission = shift @{$self->{events}} ) {
# do something with them
}
$kernel->delay( 'process_submissions', $self->{interval} );
}
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