PTHREAD_ATTR(3)

NAME
pthread_attr_getschedparam, pthread_attr_setschedparam - thread attribute operations

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 *restrict attr, const struct sched_param *restrict param);

DESCRIPTION
Thread attributes are used to specify parameters to pthread_create(). One attribute object can be used in multiple calls to pthread_create(), with or without modifications between calls.

pthread_attr_getschedparam() and pthread_attr_setschedparam() get and set the scheduling parameters within the attr argument. See /usr/include/sched.h for the definition of struct sched_param. The sched_priority field of struct sched_param can be set to SCHED_OTHER, SCHED_FIFO and SCHED_RR.

RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. pthread_attr_getschedparam(), on success, will copy the value of the thread's scheduling parameter attribute to the location pointed to by the second function parameter.

ERRORS

pthread_attr_getschedparam() will fail if:

[EINVAL]
    Invalid value for attr.

pthread_attr_setschedparam() will fail if:

[EINVAL]
    Invalid value for attr.

[ENOTSUP]
    Invalid value for param.

SEE ALSO
pthread_create(3), pthread_attr_init(3), pthread_attr_setinheritsched(3)

STANDARDS

pthread_attr_setschedparam(), pthread_attr_getschedparam() conform to susv2