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The draft standard POSIX Threads Extension provides an application program interface to operating system services supporting the creation and execution of multiple threads of control within a single process. Where Ada is implemented over an operating system that supports POSIX-like thread services, there are good reasons to implement the Ada tasks as POSIX threads. This paper explores some of the design issues involved in implementing Ada 9X tasking constructs on a system supporting POSIX threads.
Giering et al. (Fri,) studied this question.