Module notifylist

ETS table based list of running processes that want to be notified when a presentitys state _might_ have changed.

Introduced in: 8 May 2006 by <ft@nbar.it.su.se>

Authors: Fredrik Thulin (ft@it.su.se).

Description

ETS table based list of running processes that want to be notified when a presentitys state _might_ have changed.

add/3	Adds an entry to the notification list.
delete/3	Deletes an entry from the notification list.
get_all_pids/0	Get a list of every pid subscribed to any resource.
lookup/2	Get a list of everyone interested in changes to Presentity matching PackageFilter.

add(Presentity, PackageS, Pid) -> ok

Adds an entry to the notification list. Add Pid as a watcher to changes for Presentity in the context of PackageS.

delete(Presentity, PackageS, Pid) -> ok

Deletes an entry from the notification list. Declare Pid not any longer interested in changes to Presentity in the context of PackageS.

get_all_pids() -> [pid()]

Get a list of every pid subscribed to any resource. The list MAY contain duplicates.

lookup(Presentity, PackageFilter) -> [pid()]

Get a list of everyone interested in changes to Presentity matching PackageFilter.

Generated by EDoc, Oct 17 2007, 16:48:12.