LIBRT(3LIB) Interface Libraries LIBRT(3LIB)

librt, libposix4 - POSIX.1b Realtime Extensions library

cc [ flag... ] file... -lrt [ library... ]

Historically, functions in this library provided many of the interfaces specified by the POSIX.1b Realtime Extension. See standards(7). This functionality now resides in libc(3LIB).

This library is maintained to provide backward compatibility for both runtime and compilation environments. The shared object is implemented as a filter on New application development need not specify -lrt.

The shared objects and provide the public interfaces defined below. See Intro(3) for additional information on shared object interfaces.

aio_cancel aio_error
aio_fsync aio_read
aio_return aio_suspend
aio_waitn aio_write
clock_getres clock_gettime
clock_nanosleep clock_settime
close fdatasync
fork lio_listio
mq_close mq_getattr
mq_notify mq_open
mq_receive mq_reltimedreceive_np
mq_reltimedsend_np mq_send
mq_setattr mq_timedreceive
mq_timedsend mq_unlink
nanosleep sched_get_priority_max
sched_get_priority_min sched_getparam
sched_getscheduler sched_rr_get_interval
sched_setparam sched_setscheduler
sched_yield sem_close
sem_destroy sem_getvalue
sem_init sem_open
sem_post sem_reltimedwait_np
sem_timedwait sem_trywait
sem_unlink sem_wait
shm_open shm_unlink
sigqueue sigtimedwait
sigwaitinfo timer_create
timer_delete timer_getoverrun
timer_gettime timer_settime

The following interfaces are unique to the 32-bit version of this library:

aio_cancel64 aio_error64
aio_fsync64 aio_read64
aio_return64 aio_suspend64
aio_waitn64 aio_write64

shared object


64-bit shared object file


shared object


64-bit shared object file

See attributes(7) for descriptions of the following attributes:

MT-Level Safe

pvs(1), Intro(3), libc(3LIB), attributes(7), standards(7)

February 5, 2008 OmniOS