PROLOG

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of
       this interface may differ (consult the corresponding Linux  manual  page  for  details  of
       Linux behavior), or the interface may not be implemented on Linux.

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_getsigdefault(),
       posix_spawnattr_getflags(), posix_spawnattr_getpgroup(), posix_spawnattr_getschedpolicy(),
       posix_spawnattr_getsigmask()

       The Base Definitions volume of POSIX.1‐2017, <sched.h>, <spawn.h>

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1-2017, Standard for Information Technology -- Portable  Operating  System  Interface
       (POSIX),  The  Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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 .

       Any  typographical  or  formatting errors that appear in this page are most likely to have
       been introduced during the conversion of the source files to man page  format.  To  report
       such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .