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POSIX Threads

This chapter describes the pthreads (POSIX threads) library. This library provides support functions for multithreaded programs: thread primitives, synchronization objects, and so forth. It also implements POSIX 1003.1b semaphores (not to be confused with System V semaphores).

The threads operations (`pthread_*') do not use errno. Instead they return an error code directly. The semaphore operations do use errno.


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