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).

VERSIONS

       This function is available since glibc 2.3.4.

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.1-2001, POSIX.1-2008.

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)