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_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_getsigdefault(),
       posix_spawnattr_getflags(), posix_spawnattr_getpgroup(), posix_spawnattr_getschedparam(),
       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 .