1SCHED_YIELD(3P)            POSIX Programmer's Manual           SCHED_YIELD(3P)
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PROLOG

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

13       sched_yield — yield the processor
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SYNOPSIS

16       #include <sched.h>
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18       int sched_yield(void);
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DESCRIPTION

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

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

31       No errors are defined.
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33       The following sections are informative.
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EXAMPLES

36       None.
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APPLICATION USAGE

39       The conceptual model for scheduling semantics in POSIX.1‐2008 defines a
40       set of thread lists. This set of thread lists is always present regard‐
41       less of the scheduling options supported by the  system.  On  a  system
42       where the Process Scheduling option is not supported, portable applica‐
43       tions should not make any assumptions regarding  whether  threads  from
44       other processes will be on the same thread list.
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RATIONALE

47       None.
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FUTURE DIRECTIONS

50       None.
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SEE ALSO

53       The Base Definitions volume of POSIX.1‐2008, <sched.h>
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56       Portions  of  this text are reprinted and reproduced in electronic form
57       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
58       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
59       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
60       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
61       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
62       event of any discrepancy between this version and the original IEEE and
63       The Open Group Standard, the original IEEE and The Open Group  Standard
64       is  the  referee document. The original Standard can be obtained online
65       at http://www.unix.org/online.html .
66
67       Any typographical or formatting errors that appear  in  this  page  are
68       most likely to have been introduced during the conversion of the source
69       files to man page format. To report such errors,  see  https://www.ker‐
70       nel.org/doc/man-pages/reporting_bugs.html .
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74IEEE/The Open Group                  2013                      SCHED_YIELD(3P)
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