sched_yield

Sommaire

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 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>.

RETURN VALUE

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

ERRORS

In the Linux implementation, sched_yield() always succeeds.

CONFORMING TO

POSIX.1-2001.

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