NAME
pthread_setschedprio - set scheduling priority of a thread
LIBRARY
POSIX threads library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>int pthread_setschedprio(pthread_t \nthread\n, int \nprio\n);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)