pthread_setschedprio (3)
NAME
pthread_setschedprio - set scheduling priority of a threadSYNOPSIS
#include <pthread.h> 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.1-2001 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.CONFORMING TO
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_setscheduler(2).SEE ALSO
getrlimit(2), sched_get_priority_min(2), sched_setscheduler(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)COLOPHON
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