Professional Multicore Programming: Design and Implementation for C++ Developers

Name

NAME

pisix_spawnattr_getschedparam, posix_spawnattr_setschedparam — get and set the spawn-Schedparam attribute of a spawn attributes object (ADVANCED REALTIME)

SYNOPSIS

SPN PS #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() function shall obtain the value of the spawn_schedparam attribute from the attributes object referenced by attr.

The posix_spawnattr_setschedparam() function shall set 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 VALUE

Upon successful completion, posix_spawnattr_getschedparam() shall return zero and store the value of the spawn-schedparam attribute of attr into the object referenced by the schedparam parameter; otherwise, an error number shall be returned to indicate the error.

Upon successful completion, posix_spawnattr_setschedparam () shall return zero; otherwise, an error number shall be returned to indicate the error.

ERRORS

These functions may fail if:

[EINVAL]

The value specified ...