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Explain how garbage collection manages the reclamation of unused memory.

Posted On: 12/10/2013 22:23:52
The garbage collector assumes that all objects in the managed heap are garbage. It starts walking the roots and builds a graph of all objects reachable from the roots recursively.
 It stops when it attempts to add an object to the graph that it previously added.
The graph contains the set of all objects that are reachable from the application's roots. Any object/s that is not in the graph is not accessible by the application, and is considered garbage. Collection only occurs when the heap is full.
In such a case, each and every garbage object calls the Finalize method and reclaims the unused memory.
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