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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 .