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PROLOG
       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of
       this interface may differ (consult the corresponding Linux  manual  page  for  details  of
       Linux behavior), or the interface may not be implemented on Linux.


NAME
       sched_yield — yield the processor


SYNOPSIS
       #include <sched.h>

       int sched_yield(void);


DESCRIPTION
       The  sched_yield()  function  shall  force  the running thread to relinquish the processor
       until it again becomes the head of its thread list. It takes no arguments.


RETURN VALUE
       The sched_yield() function shall return 0 if  it  completes  successfully;  otherwise,  it
       shall return a value of −1 and set errno to indicate the error.


ERRORS
       No errors are defined.

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       The  conceptual  model  for  scheduling  semantics in POSIX.1‐2008 defines a set of thread
       lists. This set of thread lists is always present regardless  of  the  scheduling  options
       supported by the system. On a system where the Process Scheduling option is not supported,
       portable applications should not make any assumptions regarding whether threads from other
       processes will be on the same thread list.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       The Base Definitions volume of POSIX.1‐2008, <sched.h>


COPYRIGHT
       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2013 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX),  The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc  and  The  Open  Group.   (This  is
       POSIX.1-2008  with  the  2013  Technical  Corrigendum  1  applied.)  In  the  event of any
       discrepancy between this version and the original IEEE and The Open  Group  Standard,  the
       original  IEEE  and The Open Group Standard is the referee document. The original Standard
       can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most  likely  to  have
       been  introduced  during  the conversion of the source files to man page format. To report
       such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .