184 lines
4.7 KiB
HTML
184 lines
4.7 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of PTHREAD_SETSCHEDPRIO</TITLE>
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<H1>PTHREAD_SETSCHEDPRIO</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2015-08-08<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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pthread_setschedprio - set scheduling priority of a thread
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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<B>#include <<A HREF="file:///usr/include/pthread.h">pthread.h</A>></B>
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<B>int pthread_setschedprio(pthread_t </B><I>thread</I><B>, int </B><I>prio</I><B>);</B>
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Compile and link with <I>-pthread</I>.
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</PRE>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The
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<B>pthread_setschedprio</B>()
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function sets the scheduling priority of the thread
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<I>thread</I>
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to the value specified in
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<I>prio</I>.
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(By contrast
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_setschedparam">pthread_setschedparam</A></B>(3)
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changes both the scheduling policy and priority of a thread.)
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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On success, this function returns 0;
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on error, it returns a nonzero error number.
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If
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<B>pthread_setschedprio</B>()
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fails, the scheduling priority of
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<I>thread</I>
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is not changed.
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<A NAME="lbAF"> </A>
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<H2>ERRORS</H2>
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<DL COMPACT>
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<DT id="1"><B>EINVAL</B>
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<DD>
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<I>prio</I>
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is not valid for the scheduling policy of the specified thread.
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<DT id="2"><B>EPERM</B>
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<DD>
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The caller does not have appropriate privileges
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to set the specified priority.
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<DT id="3"><B>ESRCH</B>
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<DD>
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No thread with the ID
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<I>thread</I>
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could be found.
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</DL>
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<P>
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POSIX.1 also documents an
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<B>ENOTSUP</B>
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("attempt was made to set the priority
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to an unsupported value") error for
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_setschedparam">pthread_setschedparam</A></B>(3).
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<A NAME="lbAG"> </A>
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<H2>VERSIONS</H2>
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This function is available in glibc since version 2.3.4.
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<A NAME="lbAH"> </A>
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<H2>ATTRIBUTES</H2>
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For an explanation of the terms used in this section, see
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<B><A HREF="/cgi-bin/man/man2html?7+attributes">attributes</A></B>(7).
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<TABLE BORDER>
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<TR VALIGN=top><TD><B>Interface</B></TD><TD><B>Attribute</B></TD><TD><B>Value</B><BR></TD></TR>
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<TR VALIGN=top><TD>
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<B>pthread_setschedprio</B>()
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</TD><TD>Thread safety</TD><TD>MT-Safe<BR></TD></TR>
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</TABLE>
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<A NAME="lbAI"> </A>
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<H2>CONFORMING TO</H2>
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POSIX.1-2001, POSIX.1-2008.
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<A NAME="lbAJ"> </A>
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<H2>NOTES</H2>
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For a description of the permissions required to, and the effect of,
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changing a thread's scheduling priority,
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and details of the permitted ranges for priorities
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in each scheduling policy, see
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<B><A HREF="/cgi-bin/man/man2html?7+sched">sched</A></B>(7).
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<A NAME="lbAK"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?2+getrlimit">getrlimit</A></B>(2),
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<B><A HREF="/cgi-bin/man/man2html?2+sched_get_priority_min">sched_get_priority_min</A></B>(2),
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_attr_init">pthread_attr_init</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_attr_setinheritsched">pthread_attr_setinheritsched</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_attr_setschedparam">pthread_attr_setschedparam</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_attr_setschedpolicy">pthread_attr_setschedpolicy</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_create">pthread_create</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_self">pthread_self</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+pthread_setschedparam">pthread_setschedparam</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?7+pthreads">pthreads</A></B>(7),
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<B><A HREF="/cgi-bin/man/man2html?7+sched">sched</A></B>(7)
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<A NAME="lbAL"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="4"><A HREF="#lbAB">NAME</A><DD>
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<DT id="5"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="6"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="7"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="8"><A HREF="#lbAF">ERRORS</A><DD>
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<DT id="9"><A HREF="#lbAG">VERSIONS</A><DD>
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<DT id="10"><A HREF="#lbAH">ATTRIBUTES</A><DD>
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<DT id="11"><A HREF="#lbAI">CONFORMING TO</A><DD>
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<DT id="12"><A HREF="#lbAJ">NOTES</A><DD>
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<DT id="13"><A HREF="#lbAK">SEE ALSO</A><DD>
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<DT id="14"><A HREF="#lbAL">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:53 GMT, March 31, 2021
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