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PTHREAD_SETSCHEDPRIO(3) Linux Programmer's Manual PTHREAD_SETSCHEDPRIO(3)
NAME
pthread_setschedprio - set scheduling priority of a thread
SYNOPSIS
#include <pthread.h>
int pthread_setschedprio(pthread_t thread, int prio);
Compile and link with -pthread.
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 in glibc since version 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 │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘
CONFORMING TO
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)
Linux 2021-03-22 PTHREAD_SETSCHEDPRIO(3)