The POSIX multithreading API is documented in POSIX https://pubs.opengroup.org/onlinepubs/9799919799/.
To make use of POSIX multithreading, even on platforms that don’t support it natively (most prominently, native Windows), use the following Gnulib modules:
| Purpose | Module |
|---|---|
| For thread creation and management: | pthread-thread |
| For simple and recursive locks: | pthread-mutex |
| For read-write locks: | pthread-rwlock |
| For once-only execution: | pthread-once |
| For “condition variables” (wait queues): | pthread-cond |
| For thread-local storage: | pthread-tss |
| For relinquishing control: | sched_yield |
| For spin locks: | pthread-spin |
There is also a convenience module named pthread which depends on all
of these (except sched_yield); so you don’t need to enumerate these
modules one by one.