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Chapter 10 : Case Study - UNIX - page 15 / 48

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Ceng 334 - Operating Systems

10-15

Thread Calls in POSIX

Threads were not in the first versions of UNIX

There are many thread packages in use which are standardized in POSIX

Thread calls are the same for user-space or kernel-space

In kernel-space implementation calls are system calls

In user-space implementation calls are to a run-time library

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