The pthread.h header file contains function declarations and mappings for threading interfaces and defines a number of constants used by those functions. The header includes the sched.h header. When _UNIX03_THREADS is defined, pthread.h also includes the time.h header. For _OPEN_THREADS applications, pthread.h defines the timespec structure.
There is a lot of overlap in the namespaces identified by the _OPEN_THREADS and _UNIX03_THREADS feature test macros. There are, however, behavioral differences between functions of the same name exposed by _OPEN_THREADS (POSIX.4a Draft 6) and by _UNIX03_THREADS (Single UNIX Specification, Version 3). See the individual function descriptions for specific details.
| pthread_attr_destroy() | pthread_attr_getdetachstate() |
| pthread_attr_getstacksize() | pthread_attr_init() |
| pthread_attr_setdetachstate() | pthread_attr_setstacksize() |
| pthread_cancel() | pthread_cleanup_pop() |
| pthread_cleanup_push() | pthread_condattr_destroy() |
| pthread_condattr_init() | pthread_cond_broadcast() |
| pthread_cond_destroy() | pthread_cond_init() |
| pthread_cond_signal() | pthread_cond_timedwait() |
| pthread_cond_wait() | pthread_create() |
| pthread_detach() | pthread_equal() |
| pthread_exit() | pthread_getspecific() |
| pthread_join() | pthread_key_create() |
| pthread_kill() | pthread_mutexattr_destroy() |
| pthread_mutexattr_getpshared() | pthread_mutexattr_gettype() |
| pthread_mutexattr_init() | pthread_mutexattr_setpshared() |
| pthread_mutexattr_settype() | pthread_mutex_destroy() |
| pthread_mutex_init() | pthread_mutex_lock() |
| pthread_mutex_trylock() | pthread_mutex_unlock() |
| pthread_once() | pthread_rwlockattr_destroy() |
| pthread_rwlockattr_getpshared() | pthread_rwlockattr_init() |
| pthread_rwlockattr_setpshared() | pthread_rwlock_destroy() |
| pthread_rwlock_init() | pthread_rwlock_rdlock() |
| pthread_rwlock_tryrdlock() | pthread_rwlock_trywrlock() |
| pthread_rwlock_unlock() | pthread_self() |
| pthread_setintr() | pthread_setintrtype() |
| pthread_setspecific() | pthread_testintr() |
| pthread_tag_np() | pthread_yield() |
| pthread_getconcurrency() | pthread_key_delete() |
| pthread_setcancelstate() | pthread_setcanceltype() |
| pthread_setconcurrency() | pthread_testcancel() |
| pthread_atfork() | |
| pthread_attr_getguardsize() | pthread_attr_setguardsize() |
| pthread_attr_getschedparam() | pthread_attr_setschedparam() |
| pthread_attr_getstack() | pthread_attr_setstack() |
| pthread_attr_getstackaddr() | pthread_attr_setstackaddr() |
| pthread_atfork() | pthread_getspecific() |
| pthread_attr_destroy() | pthread_join() |
| pthread_attr_getdetachstate() | pthread_key_create() |
| pthread_attr_getguardsize() | pthread_key_delete() |
| pthread_attr_getschedparam() | pthread_mutex_destroy() |
| pthread_attr_getstack() | pthread_mutex_init() |
| pthread_attr_getstackaddr() | pthread_mutex_lock() |
| pthread_attr_getstacksize() | pthread_mutex_trylock() |
| pthread_attr_init() | pthread_mutex_unlock() |
| pthread_attr_setdetachstate() | pthread_mutexattr_destroy() |
| pthread_attr_setguardsize() | pthread_mutexattr_getpshared() |
| pthread_attr_setschedparam() | pthread_mutexattr_gettype() |
| pthread_attr_setstack() | pthread_mutexattr_init() |
| pthread_attr_setstackaddr() | pthread_mutexattr_setpshared() |
| pthread_attr_setstacksize() | pthread_mutexattr_settype() |
| pthread_cancel() | pthread_once() |
| pthread_cleanup_pop() | pthread_rwlock_destroy() |
| pthread_cleanup_push() | pthread_rwlock_init() |
| pthread_cond_broadcast() | pthread_rwlock_rdlock() |
| pthread_cond_destroy() | pthread_rwlock_tryrdlock() |
| pthread_cond_init() | pthread_rwlock_trywrlock() |
| pthread_cond_signal() | pthread_rwlock_unlock() |
| pthread_cond_timedwait() | pthread_rwlock_wrlock() |
| pthread_cond_wait() | pthread_rwlockattr_destroy() |
| pthread_condattr_destroy() | pthread_rwlockattr_getpshared() |
| pthread_condattr_getpshared() | pthread_rwlockattr_init() |
| pthread_condattr_init() | pthread_rwlockattr_setpshared() |
| pthread_condattr_setpshared() | pthread_self() |
| pthread_create() | pthread_setcancelstate() |
| pthread_detach() | pthread_setcanceltype() |
| pthread_equal() | pthread_setconcurrency() |
| pthread_exit() | pthread_setspecific() |
| pthread_getconcurrency() | pthread_testcancel() |
| PTHREAD_CANCEL_ASYNCHRONOUS | PTHREAD_MUTEX_DEFAULT |
| PTHREAD_CANCEL_DEFERRED | PTHREAD_MUTEX_ERRORCHECK |
| PTHREAD_CANCEL_DISABLE | PTHREAD_MUTEX_INITIALIZER |
| PTHREAD_CANCEL_ENABLE | PTHREAD_MUTEX_NORMAL |
| PTHREAD_CANCELED | PTHREAD_MUTEX_RECURSIVE |
| PTHREAD_COND_INITIALIZER | PTHREAD_ONCE_INIT |
| PTHREAD_CREATE_DETACHED | PTHREAD_PROCESS_PRIVATE |
| PTHREAD_CREATE_JOINABLE | PTHREAD_PROCESS_SHARED |
| PTHREAD_EXPLICIT_SCHED | PTHREAD_RWLOCK_INITIALIZER_NP |
| PTHREAD_INHERIT_SCHED |
| pthread_attr_getsynctype_np() | pthread_attr_getweight_np() |
| pthread_attr_setsynctype_np() | pthread_attr_setweight_np() |
| pthread_condattr_getkind_np() | pthread_condattr_setkind_np() |
| pthread_join_d4_np() | pthread_mutexattr_getkind_np() |
| pthread_mutexattr_setkind_np() | pthread_security_np() |
| pthread_set_limit_np() | pthread_tag_np() |
| pthread_condattr_getpshared() | pthread_condattr_setpshared() |
| __COND_DEFAULT | __COND_NODEBUG |
| __DETACHED | __HEAVY_WEIGHT |
| __MEDIUM_WEIGHT | __MUTEX_NODEBXG |
| __MUTEX_NONRECXRSIVE | __MUTEX_RECXRSIVE |
| __UNDETACHED | NO_PRIO_INHERIT |
| PRIO_INHERIT | PTHREAD_DEFAULT_SCHED |
| PTHREAD_INHERIT_SCHED | PTHREAD_INTR_ASYNCHRONOUS |
| PTHREAD_INTR_CONTROLLED | PTHREAD_INTR_DISABLE |
| PTHREAD_INTR_ENABLE | PTHREAD_ONCE_INIT |
| PTHREAD_PROCESS_PRIVATE | PTHREAD_PROCESS_SHARED |
| PTHREAD_SCOPE_GLOBAL | PTHREAD_SCOPE_LOCAL |
| SCHED_FIFO | SCHED_OTHER |
| SCHED_RR | PRIO_PROTECT |
| PTHREAD_MUTEX_DEFAULT | PTHREAD_MUTEX_ERRORCHECK |
| PTHREAD_MUTEX_NORMAL | PTHREAD_MUTEX_INITIALIZER |
| PTHREAD_MUTEX_RECURSIVE | PTHREAD_RWLOCK_INITIALIZER |
| __THDQ_LENGTH |
| PTHREAD_CANCEL_ENABLE | PTHREAD_CANCEL_DISABLE |
| PTHREAD_CANCEL_DEFERRED | PTHREAD_CANCEL_ASYNCHRONOUS |