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 .