sched_yield - yield the processor
A process can relinquish the processor voluntarily without blocking by
calling sched_yield. The process will then be moved to the end of the
queue for its static priority and a new process gets to run.
Note: If the current process is the only process in the highest priority
list at that time, this process will continue to run after a call
POSIX systems on which sched_yield is available define _POSIX_PRIOR-
ITY_SCHEDULING in <unistd.h>.
On success, sched_yield returns 0. On error, -1 is returned, and errno
is set appropriately.
POSIX.1b (formerly POSIX.4)
sched_setscheduler(2) for a description of Linux scheduling.
Programming for the real world - POSIX.4 by Bill O. Gallmeister,
O'Reilly & Associates, Inc., ISBN 1-56592-074-0
IEEE Std 1003.1b-1993 (POSIX.1b standard)
Linux 1.3.81 1996-04-10 SCHED_YIELD(2)
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