Ambient-Oriented Programming

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at:tutorial:distribution [2007/05/04 08:32] – * elisagat:tutorial:distribution [2007/05/04 08:32] – * elisag
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 This code illustrate how the instant messenger application notifies when a buddy goes online or offline. In the above code, ''messenger'' is a remote reference to another remote buddy discovered. Note that installing disconnected observers also allows developers to clean certain resources when a remote reference becomes disconnected. However, when an instant messengers disconnects, the remote object referred to by ''messenger'' remains exported. This implies that remote objects remains pointed by a disconnected remote reference which prevents them from being garbage collected. In fact, ''messenger'' are never garbage unlesss explicit cancelation of the subscription. But other types of objects which are only relevant within the context of an interaction should become eventually candidates for garbage collection. In the next section, we detail how AmbientTalk deals with distributed memory management.  This code illustrate how the instant messenger application notifies when a buddy goes online or offline. In the above code, ''messenger'' is a remote reference to another remote buddy discovered. Note that installing disconnected observers also allows developers to clean certain resources when a remote reference becomes disconnected. However, when an instant messengers disconnects, the remote object referred to by ''messenger'' remains exported. This implies that remote objects remains pointed by a disconnected remote reference which prevents them from being garbage collected. In fact, ''messenger'' are never garbage unlesss explicit cancelation of the subscription. But other types of objects which are only relevant within the context of an interaction should become eventually candidates for garbage collection. In the next section, we detail how AmbientTalk deals with distributed memory management. 
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 ===== Garbage collecting remote references ===== ===== Garbage collecting remote references =====
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 <note> <note>
-The complete implementation of the instant messenger application explained along this section can be found in the file at/demo/InstantMessenger.at.+The complete implementation of the instant messenger application explained along this chapter can be found in the file at/demo/InstantMessenger.at.
 </note> </note>
at/tutorial/distribution.txt · Last modified: 2009/01/30 16:13 by tvcutsem