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).COLOPHON
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