NAME

       posix_spawnattr_getschedparam,   posix_spawnattr_setschedparam   -   get   and   set   the
       spawn-schedparam attribute of a spawn attributes object (ADVANCED REALTIME)

SYNOPSIS

       #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>

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 .