POSIX_SPAWNATTR_GETSCHEDPOLPOSIXPProgrammer'POSIX_SPAWNATTR_GETSCHEDPOLICY(3P)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; other‐
wise, 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 ALSOposix_spawn(), posix_spawnattr_destroy(), posix_spawnattr_getsigde‐
fault(), posix_spawnattr_getflags(), posix_spawnattr_getpgroup(),
posix_spawnattr_getschedparam(), posix_spawnattr_getsigmask()
The Base Definitions volume of POSIX.1‐2008, <sched.h>, <spawn.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
cal and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/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.ker‐
nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 POSIX_SPAWNATTR_GETSCHEDPOLICY(3P)
