NAME

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

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  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_init()      ,
       posix_spawnattr_getsigdefault() , posix_spawnattr_getflags() , posix_spawnattr_getpgroup()
       ,       posix_spawnattr_getschedparam()       ,       posix_spawnattr_getsigmask()       ,
       posix_spawnattr_setsigdefault() , posix_spawnattr_setflags() , posix_spawnattr_setpgroup()
       , posix_spawnattr_setschedparam() , posix_spawnattr_setsigmask() ,  posix_spawnp()  ,  the
       Base Definitions volume of IEEE Std 1003.1-2001, <sched.h>, <spawn.h>

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .