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int sched_yield(void);
DESCRIPTION
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 to sched_yield().
POSIX systems on which sched_yield() is available define _POSIX_PRIORITY_SCHEDULING in <unistd.h>.
Programming for the real world - POSIX.4 by Bill O. Gallmeister, OReilly & Associates, Inc., ISBN 1-56592-074-0
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