pthread_setschedprio(3)

NAME
pthread_setschedprio - set scheduling priority of a thread

LIBRARY
POSIX threads library (libpthread, -lpthread)

SYNOPSIS
#include <pthread.h>

int pthread_setschedprio(pthread_t thread, int prio);

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
    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).

ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value
 | Thread safety | MT-Safe

STANDARDS
POSIX.1-2008.

HISTORY
glibc 2.3.4. 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(7).

SEE ALSO
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)