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


NAME


librt, libposix4 - POSIX.1b Realtime Extensions library

SYNOPSIS


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


DESCRIPTION


Historically, functions in this library provided many of the interfaces
specified by the POSIX.1b Realtime Extension. See standards(5). 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 libc.so.1. New application development need
not specify -lrt.

INTERFACES


The shared objects librt.so.1 and libposix4.so.1 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
lio_listio64


FILES


/lib/librt.so.1
shared object


/lib/64/librt.so.1
64-bit shared object file


/lib/libposix4.so.1
shared object


/lib/64/libposix4.so.1
64-bit shared object file


ATTRIBUTES


See attributes(5) for descriptions of the following attributes:


+---------------+-----------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------+
|MT-Level | Safe |
+---------------+-----------------+

SEE ALSO


pvs(1), Intro(3), libc(3LIB), attributes(5), standards(5)


February 5, 2008 LIBRT(3LIB)