pthread_schedparam.3 revision 338707
Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>.
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$FreeBSD: stable/11/share/man/man3/pthread_schedparam.3 338707 2018-09-17 02:51:08Z pfg $
.Dd August 17, 2018 .Dt PTHREAD_SCHEDPARAM 3 .Os .Sh NAME .Nm pthread_setschedparam , .Nm pthread_getschedparam .Nd thread scheduling parameter manipulation .Sh LIBRARY .Lb libpthread .Sh SYNOPSIS n pthread.h .Ft int .Fn pthread_setschedparam "pthread_t thread" "int policy" "const struct sched_param *param" .Ft int .Fn pthread_getschedparam "pthread_t thread" "int *restrict policy" "struct sched_param *restrict param" .Sh DESCRIPTION The .Fn pthread_setschedparam and .Fn pthread_getschedparam functions set and get the scheduling parameters of individual threads. The scheduling policy for a thread can either be .Dv SCHED_FIFO (first in, first out), .Dv SCHED_RR (round-robin), or .Dv SCHED_OTHER (timesharing). Valid thread priorities (accessed via .Va param->sched_priority ) must be within the range returned by the .Xr sched_get_priority_min 2 and .Xr sched_get_priority_max 2 system calls. .Sh RETURN VALUES If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. .Sh ERRORS The .Fn pthread_setschedparam function will fail if: l -tag -width Er t Bq Er EINVAL Invalid value for .Fa policy . t Bq Er ENOTSUP Invalid value for scheduling parameters. t Bq Er ESRCH Non-existent thread .Fa thread . .El
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OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$FreeBSD: stable/11/share/man/man3/pthread_schedparam.3 338707 2018-09-17 02:51:08Z pfg $
.Dd August 17, 2018 .Dt PTHREAD_SCHEDPARAM 3 .Os .Sh NAME .Nm pthread_setschedparam , .Nm pthread_getschedparam .Nd thread scheduling parameter manipulation .Sh LIBRARY .Lb libpthread .Sh SYNOPSIS n pthread.h .Ft int .Fn pthread_setschedparam "pthread_t thread" "int policy" "const struct sched_param *param" .Ft int .Fn pthread_getschedparam "pthread_t thread" "int *restrict policy" "struct sched_param *restrict param" .Sh DESCRIPTION The .Fn pthread_setschedparam and .Fn pthread_getschedparam functions set and get the scheduling parameters of individual threads. The scheduling policy for a thread can either be .Dv SCHED_FIFO (first in, first out), .Dv SCHED_RR (round-robin), or .Dv SCHED_OTHER (timesharing). Valid thread priorities (accessed via .Va param->sched_priority ) must be within the range returned by the .Xr sched_get_priority_min 2 and .Xr sched_get_priority_max 2 system calls. .Sh RETURN VALUES If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. .Sh ERRORS The .Fn pthread_setschedparam function will fail if: l -tag -width Er t Bq Er EINVAL Invalid value for .Fa policy . t Bq Er ENOTSUP Invalid value for scheduling parameters. t Bq Er ESRCH Non-existent thread .Fa thread . .El
p The .Fn pthread_getschedparam function will fail if: l -tag -width Er t Bq Er ESRCH Non-existent thread .Fa thread . .El .Sh SEE ALSO .Xr sched_get_priority_max 2 , .Xr sched_get_priority_min 2 .Sh STANDARDS The .Fn pthread_setschedparam and .Fn pthread_getschedparam functions conform to .St -susv2 .