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In `F33f`_`[computing`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Computing]`_`f, an `!alien thread`! in a `F33f`_`[multi-processor`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Multiprocessing]`_`f system is a `F33f`_`[thread`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Thread_(computer_science)]`_`f of program execution executed by one processor on behalf of a process running on another processor.`:cite-ref-1[`F5bf`_`[1`#cite-note-1]`_`f] Alien threads are implemented in the Fiasco.OC/`F33f`_`[L4 microkernel`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=L4_microkernel]`_`f operating system.

>>References

`:cite-note-1`!1.`! `F0af`_`[↑`#cite-ref-1]`_`f `:citereffederico-mezajorge-p-rez-r-yadran-eterovic2005`aFederico Meza; Jorge Pérez R.; Yadran Eterovic (January 2005). `*Implementing Distributed Mutual Exclusion on Multithreaded Environments: The Alien-Threads Approach`* (PDF). International Symposium and School on Advanced Distributed Systems (`F33f`_`[LNCS`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Lecture_Notes_in_Computer_Science]`_`f vol. 3563). Guadalajara, Mexico. pp. 51–62. `F33f`_`[doi`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Doi_(identifier)]`_`f:10.1007/11533962_6. Archived from the original (PDF) on 2011-07-07. Retrieved 2010-02-10.

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