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io_waituntil(3)		   Library Functions Manual	       io_waituntil(3)

NAME
       io_waituntil - wait for events

SYNTAX
       #include	<libowfat/io.h>

       void io_waituntil(tai6464 t);

DESCRIPTION
       io_waituntil(t)	is  like io_wait() but does not	wait (noticeably) past
       time t.

NOTE
       Depending on the	underlying operating system primitive, there is	a  po-
       tential	race  condition	to be aware of.	Some event notification	mecha-
       nisms (for example, kqueue on BSD and epoll on Linux) will return  mul-
       tiple events. If	your application operates on pairs of file descriptors
       (a  proxy  server  maybe),  and	an error on one	descriptor can lead to
       closing the other descriptor, then an outstanding event	on  the	 other
       descriptor  can still be	queued for delivery to you. Be prepared	to re-
       ceive events for	a descriptor that has already been closed.

SEE ALSO
       io_wait(3), io_check(3),	io_wantread(3),	io_wantwrite(3), io_fd(3)

							       io_waituntil(3)

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