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

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.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|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)

January 30, 2004
POSIX_SPAWNATTR_GETSCHEDPARAM(3C)