Understanding pthreads
pthreads, short for POSIX Threads, is an execution model that exists independently of a programming language, as well as a parallel execution model. It allows a program to control multiple different flows of work that overlap in time. The API is defined by the IEEE POSIX.1c standard (IEEE Std 1003.1c-1995).
In the C programming language, pthreads are implemented as a library that provides functions for thread management, including creation, joining, and detaching. To ensure Thread Safety, the library includes synchronization primitives such as Mutex (Mutual Exclusion) objects, Condition Variables, and Read-Write Locks. These tools are essential for preventing Race Conditions when multiple threads access shared memory.
The pthreads library is standard on Unix-like operating systems, such as Linux, BSD, and macOS. When compiling applications using GCC or Clang, developers typically link the library using the -lpthread flag. For technical specifications and function definitions, developers refer to The Open Group Base Specifications and the Linux Programmer's Manual.