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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | STANDARDS | HISTORY | NOTES | SEE ALSO | COLOPHON |
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pthread_setschedprio(3) Library Functions Manual pthread_setschedprio(3)
pthread_setschedprio - set scheduling priority of a thread
POSIX threads library (libpthread, -lpthread)
#include <pthread.h>
int pthread_setschedprio(pthread_t thread, int prio);
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.)
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.
EINVAL prio is 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 thread could be found.
POSIX.1 also documents an ENOTSUP ("attempt was made to set the
priority to an unsupported value") error for
pthread_setschedparam(3).
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│ pthread_setschedprio() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
POSIX.1-2008.
glibc 2.3.4. POSIX.1-2001.
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(7).
getrlimit(2), sched_get_priority_min(2), pthread_attr_init(3),
pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3),
pthread_attr_setschedpolicy(3), pthread_create(3),
pthread_self(3), pthread_setschedparam(3), pthreads(7), sched(7)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.15.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2025-08-11. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
man-pages@man7.org
Linux man-pages 6.15 2025-05-17 pthread_setschedprio(3)
Pages that refer to this page: sched_setattr(2), sched_setscheduler(2), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_attr_setschedpolicy(3), pthread_setschedparam(3), sched(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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