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.TH PTHREAD_YIELD 3 2017-11-26 "Linux" "Linux Programmer's Manual"

.SH NAME

pthread_yield \- yield the processor

.SH SYNOPSIS

.nf

.BR "#define _GNU_SOURCE" "             /* See feature_test_macros(7) */"

.B #include <pthread.h>

.PP

.B int pthread_yield(void);

.fi

.PP

Compile and link with \fI\-pthread\fP.

.SH DESCRIPTION

.BR 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

.BR sched_yield (2)

.SH RETURN VALUE

On success,

.BR pthread_yield ()

returns 0;

on error, it returns an error number.

.SH ERRORS

On Linux, this call always succeeds

(but portable and future-proof applications should nevertheless

handle a possible error return).

.SH ATTRIBUTES

For an explanation of the terms used in this section, see

.BR attributes (7).

.TS

allbox;

lb lb lb

l l l.

Interface	Attribute	Value

T{

.BR pthread_yield ()

T}	Thread safety	MT-Safe

.TE

.SH CONFORMING TO

This call is nonstandard, but present on several other systems.

Use the standardized

.BR sched_yield (2)

instead.

.\" e.g., the BSDs, Tru64, AIX, and Irix.

.SH NOTES

On Linux, this function is implemented as a call to

.BR sched_yield (2).

.PP

.BR pthread_yield ()

is intended for use with real-time scheduling policies (i.e.,

.BR SCHED_FIFO

or

.BR SCHED_RR ).

Use of

.BR pthread_yield ()

with nondeterministic scheduling policies such as

.BR SCHED_OTHER

is unspecified and very likely means your application design is broken.

.SH SEE ALSO

.BR sched_yield (2),

.\" FIXME . .BR pthread_cond_wait (3),

.BR pthreads (7),

.BR sched (7)

.SH COLOPHON

This page is part of release 4.15 of the Linux

.I 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/.