man pages section 3: Basic Library Functions

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Updated: July 2014
 
 

posix_spawnattr_getschedpolicy(3C)

Name

posix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy - get and set spawn-schedpolicy attribute of spawn attributes object

Synopsis

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

The posix_spawnattr_setschedpolicy() function sets 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 Values

Upon successful completion, posix_spawnattr_getschedpolicy() returns 0 and stores the value of the spawn-schedpolicy attribute of attr into the object referenced by the schedpolicy parameter. Otherwise, an error number is returned to indicate the error.

Upon successful completion, posix_spawnattr_setschedpolicy() 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_setschedpolicy() function may fail if:

EINVAL

The value of the attribute being set is not valid.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Interface Stability
Committed
MT-Level
MT-Safe
Standard

See Also

posix_spawn(3C), posix_spawnattr_destroy(3C), posix_spawnattr_getflags(3C), posix_spawnattr_getpgroup(3C), posix_spawnattr_getschedparam(3C), posix_spawnattr_getsigdefault(3C), posix_spawnattr_getsigmask(3C), attributes(5), standards(5)