The Open Group Base Specifications Issue 6
IEEE Std 1003.1, 2004 Edition
Copyright © 2001-2004 The IEEE and The Open Group, All Rights reserved.

#### NAME

> posix_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 by attr is invalid.

> The posix_spawnattr_setschedparam() function may fail if:

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

The following sections are informative.

#### EXAMPLES

> None.

#### APPLICATION USAGE

> These functions are part of the Spawn and Process Scheduling options and need not be provided on all implementations.

#### RATIONALE

> None.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> posix_spawn(), posix_spawnattr_destroy(), posix_spawnattr_init(), posix_spawnattr_getsigdefault(), posix_spawnattr_getflags(), posix_spawnattr_getpgroup(), posix_spawnattr_getschedpolicy(), posix_spawnattr_getsigmask(), posix_spawnattr_setsigdefault(), posix_spawnattr_setflags(), posix_spawnattr_setpgroup(), posix_spawnattr_setschedpolicy(), posix_spawnattr_setsigmask(), posix_spawnp(), the Base Definitions volume of IEEE Std 1003.1-2001, <sched.h>, <spawn.h>

#### CHANGE HISTORY

> First released in Issue 6. Derived from IEEE Std 1003.1d-1999.

End of informative text.

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POSIX ® is a registered Trademark of The IEEE.
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