PTHREAD_SCHEDPARAM(3) | Library Functions Manual | PTHREAD_SCHEDPARAM(3) |
pthread_setschedparam
,
pthread_getschedparam
—
thread scheduling parameter manipulation
#include
<pthread.h>
int
pthread_setschedparam
(pthread_t
thread, int policy,
const struct sched_param
*param);
int
pthread_getschedparam
(pthread_t
thread, int
*policy, struct
sched_param *param);
The
pthread_setschedparam
()
and
pthread_getschedparam
()
functions set and get the scheduling parameters of individual threads. The
scheduling policy for a thread can either be
SCHED_FIFO
(first in, first out),
SCHED_RR
(round-robin), or
SCHED_OTHER
(timesharing). Valid thread priorities
(accessed via param->sched_priority) must be within
the range returned by the
sched_get_priority_min(2)
and
sched_get_priority_max(2)
system calls.
If successful, these functions return 0. Otherwise, an error number is returned to indicate the error.
The pthread_setschedparam
() function will
fail if:
EINVAL
]ENOTSUP
]ESRCH
]The pthread_getschedparam
() function will
fail if:
ESRCH
]The pthread_setschedparam
() and
pthread_getschedparam
() functions conform to
Version 2 of the Single UNIX Specification
(“SUSv2”).
October 16, 2006 | macOS 14.6 |