An hybrid model for very high level threads

Authors:
Jafar Al-Gharaibeh;Clinton Jeffery;Kostas N. Oikonomou
Affiliations:
University of Idaho, Moscow, ID;University of Idaho, Moscow, ID;AT&T Labs Research, NJ
Venue:
Proceedings of the 2012 International Workshop on Programming Models and Applications for Multicores and Manycores
Year:
2012

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Abstract

Languages with multiple paradigms or other special-purpose features often are implemented in ways that make true concurrency difficult in the virtual machine or runtime system. Several popular languages feature a global interpreter lock that limits them to pseudo-concurrency. This paper presents lessons learned in developing true concurrency for a goal-directed, object-oriented language called Unicon. Parts of the work were anticipated, such as switching to thread-safe C library functions, while other parts were a surprise, such as eliminating race conditions in self-modifying virtual machine instructions.