Feature test macros for Pthreads

Constant	Description
_POSIX_THREADS	Base threads
_POSIX_THREAD_ATTR_STACKADDR	Stack address attribute. Not present in the i5/OS implementation.
_POSIX_THREAD_ATTR_STACKSIZE	Stack size attribute. Not present in the i5/OS implementation.
_POSIX_THREAD_PRIORITY_SCHEDULING	Thread priority scheduling. Not present in the i5/OS implementation.
_POSIX_THREAD_PRIO_INHERIT	Mutex priority inheritance. Not present in the i5/OS implementation.
_POSIX_THREAD_PRIO_PROTECT	Mutex priority ceiling. Not present in the i5/OS implementation.
_POSIX_THREAD_PROCESS_SHARED	Synchronization primitives may be shared between processes.

The i5/OS implementation of pthreads defines the _POSIX_THREADS and _POSIX_THREAD_PROCESS_SHARED feature test macros. See Unsupported preprocessor and feature test macros for a complete list of unsupported feature test macros.

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