posix_spawnattr_getschedparam or posix_spawnattr_setschedparam Subroutine

Purpose

Gets and sets the spawn-schedparam attribute of a spawn attributes object.

Syntax

#include <spawn.h>
#include <sched.h>

int posix_spawnattr_getschedparam(const posix_spawnattr_t *
       restrict attr, struct sched_param *restrict schedparam);
int posix_spawnattr_setschedparam(posix_spawnattr_t *restrict attr,
       const struct sched_param *restrict schedparam); 

Description

The posix_spawnattr_getschedparam subroutine gets the value of the spawn-schedparam attribute from the attributes object referenced by attr.

The posix_spawnattr_setschedparam subroutine sets the spawn-schedparam attribute in an initialized attributes object referenced by attr.

The spawn-schedparam attribute represents the scheduling parameters to be assigned to the new process image in a spawn operation (if POSIX_SPAWN_SETSCHEDULER or POSIX_SPAWN_SETSCHEDPARAM is set in the spawn-flags attribute). The default value of this attribute is unspecified.

Return Values

Upon successful completion, the posix_spawnattr_getschedparam subroutine returns 0 and stores the value of the spawn-schedparam attribute of attr into the object referenced by the schedparam parameter; otherwise, an error number is returned to indicate the error.

Upon successful completion, the posix_spawnattr_setschedparam subroutine returns 0; otherwise, an error number is returned to indicate the error.

Error Codes