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)