pthread_setschedprio(3)    Library Functions Manual    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   |
       +--------------------------------------------+---------------+---------+
       |pthread_setschedprio ()                     | 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)

Linux man-pages 6.7               2023-10-31           pthread_setschedprio(3)