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man:pthread_yield

PTHREAD_YIELD(3) Linux Programmer's Manual PTHREAD_YIELD(3)

NAME

     pthread_yield - yield the processor

SYNOPSIS

     #define _GNU_SOURCE             /* See feature_test_macros(7) */
     #include <pthread.h>
     int pthread_yield(void);
     Compile and link with -pthread.

DESCRIPTION

     pthread_yield()  causes  the calling thread to relinquish the CPU.  The
     thread is placed at the end of the run queue for  its  static  priority
     and  another  thread  is  scheduled  to  run.  For further details, see
     sched_yield(2)

RETURN VALUE

     On success, pthread_yield() returns 0; on error, it  returns  an  error
     number.

ERRORS

     On  Linux,  this  call  always  succeeds (but portable and future-proof
     applications should nevertheless handle a possible error return).

ATTRIBUTES

     For  an  explanation  of  the  terms  used   in   this   section,   see
     attributes(7).
     +----------------+---------------+---------+
     |Interface       | Attribute     | Value   |
     +----------------+---------------+---------+
     |pthread_yield() | Thread safety | MT-Safe |
     +----------------+---------------+---------+

CONFORMING TO

     This  call  is  nonstandard, but present on several other systems.  Use
     the standardized sched_yield(2) instead.

NOTES

     On Linux, this function is implemented as a call to sched_yield(2).
     pthread_yield() is intended for use with real-time scheduling  policies
     (i.e.,  SCHED_FIFO or SCHED_RR).  Use of pthread_yield() with nondeter-
     ministic scheduling policies such as  SCHED_OTHER  is  unspecified  and
     very likely means your application design is broken.

SEE ALSO

     sched_yield(2), pthreads(7), sched(7)

COLOPHON

     This  page  is  part of release 4.16 of the Linux man-pages project.  A
     description of the project, information about reporting bugs,  and  the
     latest     version     of     this    page,    can    be    found    at
     https://www.kernel.org/doc/man-pages/.

Linux 2017-11-26 PTHREAD_YIELD(3)

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