sched_yield(3p) - phpMan

SCHED_YIELD(3P)            POSIX Programmer's Manual           SCHED_YIELD(3P)
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 regard-
       less of the scheduling options supported by the  system.  On  a  system
       where the Process Scheduling option is not supported, portable applica-
       tions 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 Electri-
       cal  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.ker-
       nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group                  2013                      SCHED_YIELD(3P)