Local Inter-Process Communication: Difference between revisions

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The '''Local Procedure Call''' ('''LPC''', often also referred to as '''Lightweight Procedure Call''' or '''Local Inter-Process Communication''') facility is an internal, undocumented [[inter-process communication]] facility provided by the [[Microsoft]] [[Windows NT]] [[Kernel (computer science)|kernel]] for light weight [[message queue]] between [[process (computing)|process]]es on the same computer. As of [[Windows Vista]], LPC has been rewritten as '''Advanced Local Procedure Call''' (ALPC) in order to provide high-speed scalable communication mechanism required to efficiently implement [[User-Mode Driver Framework]], whose user-mode parts require efficient communication with UMDF's components in the [[Architecture_of_Windows_NT#Executive|executive]].<ref>{{Harvcoltxt|Russinovich|Solomon|Ionescu|2009|p=201}}</ref>

The (A)LPC interface is part of Windows NT's undocumented [[Native API]], and as such is not available to applications for direct use. However, it can be used indirectly in following instances: