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 .