Guide to the POSIX Threads Library

This document provides a comprehensive guide for developers using the POSIX Threads Library on Compaq systems (Tru64 UNIX, OpenVMS Alpha, and OpenVMS VAX). It covers multithreaded programming principles, functional models, and programming guidelines, including handling synchronization objects like mutexes, condition variables, and read-write locks. Additionally, it provides a detailed reference for pthread and tis (thread-independent services) routine interfaces, guidelines for writing thread-safe libraries, and migration information for those moving from older CMA or D4 interfaces to the modern pthread standard.