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 prior-
ity of a thread.)
RETURN VALUE
On success, this function returns 0; on error, it returns a nonzero er-
ror 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 spec-
ified priority.
ESRCH No thread with the ID thread could be found.
POSIX.1 also documents an ENOTSUP ("attempt was made to set the prior-
ity to an unsupported value") error for pthread_setschedparam(3).
ATTRIBUTES
For an explanation of the terms used in this section, see attrib-
utes(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)
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