pthread_setschedprio - set scheduling priority of a thread
int pthread_setschedprio(pthread_t thread, int prio);
Compile and link with -pthread.
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.)
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.
- prio is not valid for the scheduling policy of the specified
- The caller does not have appropriate privileges to set the specified
- 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
This function is available in glibc since version 2.3.4.
For an explanation of the terms used in this section, see attributes(7).
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).
pthread_setschedparam(3), pthreads(7), sched(7)
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