librt(3LIB)							Interface Libraries						       librt(3LIB)

NAME

       librt, libposix4 - POSIX.1b Realtime Extensions library

SYNOPSIS

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

DESCRIPTION

       Functions  in  this  library  provide most of the interfaces specified by the POSIX.1b Realtime Extension.  See standards(5). Specifically,
       this includes the interfaces defined under the Asynchronous I/O, Message Passing, Process Scheduling,  Realtime	Signals  Extension,  Sema-
       phores,	Shared	Memory Objects, Synchronized I/O, and Timers options. The interfaces defined under the Memory Mapped Files, Process Memory
       Locking, and Range Memory Locking options are provided in libc(3LIB).

       See the man pages for the individual interfaces in section 3RT for information on required headers.

       The name libposix4 is maintained for backward compatibility and should be avoided. librt is the preferred name for this library.

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	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsl (32-bit)		   |
       +-----------------------------+-----------------------------+
       |			     |SUNWcslx (64-bit) 	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

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

SunOS 5.10							    24 Mar 2004 						       librt(3LIB)