pthread_attr_setschedparam(3C)

Name

pthread_attr_getschedparam, pthread_attr_setschedparam - get or set schedparam attribute

Synopsis

cc –mt [ flag... ] file... [ library... ]
#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

The functions pthread_attr_setschedparam() and pthread_attr_getschedparam(), respectively, set and get the scheduling parameter attributes in the attr argument. The contents of the param structure are defined in <sched.h>. The only required member of param is sched_priority.

Return Values

If successful, the pthread_attr_setschedparam() and pthread_attr_getschedparam() functions return 0. Otherwise, an error number is returned to indicate the error.

Errors

The pthread_attr_setschedparam() function may fail if:

EINVAL

attr is invalid.

The pthread_attr_getschedparam() function may fail if:

EINVAL

attr or param is invalid.

Usage

After these attributes have been set, a thread can be created with the specified attributes using pthread_create(). Using these routines does not affect the current running thread.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE Interface Stability Committed MT-Level MT-Safe Standard See standards(5).

See also

pthread_attr_init(3C), pthread_attr_setscope(3C), pthread_attr_setinheritsched(3C), pthread_attr_setschedpolicy(3C), pthread_create(3C), pthread_setschedparam(3C), attributes (5), standards(5)