PTHREAD_SETSCHEDPRIO(3)

NAME
pthread_setschedprio - set scheduling priority of a thread

SYNOPSIS
#include <pthread.h>
pthread_setschedprio(pthread_t thread, int prio);

Compile and link with -pthread.

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 non-zero error number. If pthread_setschedprio() fails, the scheduling priority of thread is not changed.

ERRORS

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.1-2001 also documents an ENOTSUP ("attempt was made to set the priority to an unsupported value") error for pthread_setschedparam().

VERSIONS
This function is available in glibc since version 2.3.4.

CONFORMING TO
POSIX.1-2001.

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 3.22 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/.