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Linux man pages : sched_yield (2)
SCHED_YIELD(2)		   Linux Programmer's Manual		SCHED_YIELD(2)

NAME

sched_yield - yield the processor

SYNOPSIS

#include <sched.h> 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 prior- ity 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_PRIOR- ITY_SCHEDULING in <unistd.h>.

RETURN VALUE

On success, sched_yield returns 0. On error, -1 is returned, and errno is set appropriately.

CONFORMING TO

POSIX.1b (formerly POSIX.4)

SEE ALSO

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) ISO/IEC 9945-1:1996 Linux 1.3.81 1996-04-10 SCHED_YIELD(2)