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Marshalling (computer science)
In computer science, marshalling or marshaling is the process of transforming the memory representation of an object to a data format suitable for storage or transmission, and it is typically used when data must be moved between different parts of a computer program or from one program to another. Marshalling is similar to serialization and is used to communicate to remote objects with an object, in this case a serialized object. It simplifies complex communication, using custom/complex objects to communicate instead of ''primitives''. The opposite, or reverse, of marshalling is called ''unmarshalling'' (or ''demarshalling'', similar to ''deserialization'').
== Usage ==
Marshalling is used within implementations of different remote procedure call (RPC) mechanisms, where it is necessary for transporting data between processes and/or between threads. In Microsoft's Component Object Model (COM), interface pointers must be marshalled when crossing COM apartment boundaries〔(Apartments and COM Threading Models )〕 (that is, crossing between instances of the COM library).〔(【引用サイトリンク】accessdate=2013-02-22 )〕 In the .NET Framework, the conversion between an unmanaged type and a CLR type, as in the P/Invoke process, is also an example of an action that requires marshalling to take place.〔(Interop Marshaling Overview )〕
Additionally, marshalling is used extensively within scripts and applications that utilize the XPCOM technologies provided within the Mozilla application framework. The Mozilla Firefox browser is a popular application built with this framework that additionally allows scripting languages to use XPCOM through XPConnect (Cross-Platform Connect).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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