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The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008
Copyright © 2001-2008 The IEEE and The Open Group

#### NAME

> posix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy - get and set the spawn-schedpolicy attribute of a spawn attributes object (ADVANCED REALTIME)

#### SYNOPSIS

> ``[SPN PS] #include <spawn.h>
> #include <sched.h>
> int posix_spawnattr_getschedpolicy(const posix_spawnattr_t
> *restrict` attr`, int *restrict` schedpolicy`);
> int posix_spawnattr_setschedpolicy(posix_spawnattr_t *`attr`,
> int` schedpolicy`);``
> `
> `

#### DESCRIPTION

> The posix_spawnattr_getschedpolicy() function shall obtain the value of the spawn-schedpolicy attribute from the attributes object referenced by attr.

> The posix_spawnattr_setschedpolicy() function shall set the spawn-schedpolicy attribute in an initialized attributes object referenced by attr.

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

#### RETURN VALUE

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

> Upon successful completion, posix_spawnattr_setschedpolicy() 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_setschedpolicy() 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_getsigdefault , posix_spawnattr_getflags , posix_spawnattr_getpgroup , posix_spawnattr_getschedparam , posix_spawnattr_getsigmask

> XBD <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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Copyright © 2001-2008 The IEEE and The Open Group, All Rights Reserved
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