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librt

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 applica-
     tion 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.



     tab();    lw(2.75i)    lw(2.75i)     lw(2.75i)     lw(2.75i)
     aio_cancelaio_error  aio_fsyncaio_read aio_returnaio_suspend
     aio_waitnaio_write                 clock_getresclock_gettime
     clock_nanosleepclock_settime  closefdatasync  forklio_listio
     mq_closemq_getattr                          mq_notifymq_open
     mq_receivemq_reltimedreceive_np    mq_reltimedsend_npmq_send
     mq_setattrmq_timedreceive              mq_timedsendmq_unlink
     nanosleepsched_get_priority_max
     sched_get_priority_minsched_getparam
     sched_getschedulersched_rr_get_interval
     sched_setparamsched_setscheduler        sched_yieldsem_close
     sem_destroysem_getvalue                     sem_initsem_open
     sem_postsem_reltimedwait_np         sem_timedwaitsem_trywait
     sem_unlinksem_wait  shm_openshm_unlink  sigqueuesigtimedwait
     sigwaitinfotimer_create         timer_deletetimer_getoverrun
     timer_gettimetimer_settime



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



     tab();    lw(2.75i)    lw(2.75i)     lw(2.75i)     lw(2.75i)
     aio_cancel64aio_error64                aio_fsync64aio_read64

     aio_return64aio_suspend64             aio_waitn64aio_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  attri-
     butes:



     tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i)  ATTRI-
     BUTE  TYPEATTRIBUTE VALUE _ Availabilitysystem/library _ MT-
     LevelSafe

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