Name
pthread_setschedprio — set scheduling priority of a thread
Synopsis
#include <pthread.h>
pthread_setschedprio( |
pthread_t thread, |
int prio); |
![[Note]](../stylesheet/note.png) |
Note |
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Compile and link with |
DESCRIPTION
The pthread_setschedprio()
function sets the scheduling priority of the thread
thread to the value
specified in prio.
(By contrast pthread_setschedparam(3)
changes both the scheduling policy and priority of a
thread.)
RETURN VALUE
On success, this function returns 0; on error, it returns
a nonzero error number. If pthread_setschedprio() fails, the
scheduling priority of thread is not changed.
ERRORS
- EINVAL
-
priois not valid for the scheduling policy of the specified thread. - EPERM
-
The caller does not have appropriate privileges to set the specified priority.
- ESRCH
-
No thread with the ID
threadcould be found.
POSIX.1-2001 also documents an ENOTSUP ("attempt was made to set the
priority to an unsupported value") error for pthread_setschedparam().
NOTES
For a description of the permissions required to, and the effect of, changing a thread's scheduling priority, and details of the permitted ranges for priorities in each scheduling policy, see sched_setscheduler(2).
SEE ALSO
getrlimit(2), sched_get_priority_min(2), sched_setscheduler(2), pthread_attr_init(3), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_attr_setschedpolicy(3), pthread_setschedparam(3), pthread_create(3), pthread_self(3), pthreads(7)
COLOPHON
This page is part of release 3.24 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at
http://www.kernel.org/doc/man-pages/.
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Copyright (c) 2008 Linux Foundation, written by Michael Kerrisk <mtk.manpagesgmail.com> Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. |