PTHREAD_ATTR_GETSCHED... BSD Library Functions Manual PTHREAD_ATTR_GETSCHED...NAME
pthread_attr_getschedparam — get and set scheduling attributes
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
int
pthread_attr_getschedparam(const pthread_attr_t * restrict attr,
struct sched_param * restrict param);
int
pthread_attr_setschedparam(pthread_attr_t *attr,
const struct sched_param *param);
int
pthread_attr_getschedpolicy(const pthread_attr_t * restrict attr,
int * restrict policy);
int
pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);
DESCRIPTION
The pthread_attr_getschedparam() and pthread_attr_setschedparam() func‐
tions obtain and set the scheduling parameter attribute in the attr
object. The sched_param structure is defined in <sched.h>. At minimum
this structure contains only a single member, sched_priority. Refer to
pthread_schedparam(3) and sched(3) for additional details.
The pthread_attr_getschedpolicy() and pthread_attr_setschedpolicy() func‐
tions get and set the scheduling policy attribute, policy, in the attr
object. The supported values of policy are the same ones listed in
pthread_schedparam(3).
RETURN VALUES
If successful, all described functions return 0. Otherwise, an error
number is returned to indicate the error.
ERRORS
The pthread_attr_getschedparam() function may fail if:
[EINVAL] An invalid parameter was specified.
The pthread_attr_setschedparam() function may fail if:
[EINVAL] An invalid parameter was specified.
[ENOMEM] There was insufficient memory.
The pthread_attr_setschedpolicy() function may fail if:
[ENOMEM] There was insufficient memory.
[ENOTSUP] An unsupported policy was specified.
No errors are defined for pthread_attr_getschedpolicy().
SEE ALSOpthread_attr(3), pthread_schedparam(3), sched(3)STANDARDS
These functions conform to IEEE Std 1003.1-2008 (“POSIX.1”).
BSD July 7, 2010 BSD
