POSIX_SPAWNATTR_GETSCHEDPARAM(3C) Standard C Library Functions

NAME

posix_spawnattr_getschedparam, posix_spawnattr_setschedparam - get and
set spawn-schedparam attribute of spawn attributes object

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#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 obtains the value of the
spawn-schedparam attribute from the attributes object referenced by
attr.

The posix_spawnattr_setschedparam() function 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, posix_spawnattr_getschedparam() 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, posix_spawnattr_setschedparam() returns 0.
Otherwise, an error number is returned to indicate the error.

ERRORS

These functions may fail if:

EINVAL The value specified by attr is invalid.

The posix_spawnattr_setschedparam() function may fail if:

EINVAL The value of the attribute being set is not valid.

INTERFACE STABILITY

Standard

MT-LEVEL
MT-Safe

SEE ALSO

posix_spawn(3C), posix_spawnattr_destroy(3C),
posix_spawnattr_getflags(3C), posix_spawnattr_getpgroup(3C),
posix_spawnattr_getschedpolicy(3C), posix_spawnattr_getsigdefault(3C),
posix_spawnattr_getsigmask(3C), attributes(7), standards(7)

STANDARDS

The posix_spawnattr_getschedparam() and posix_spawnattr_setschedparam()
functions conform to IEEE Std 1003.1-2001 ("POSIX.1").

illumos July 4, 2026 illumos