POSIX_SPAWNATTR_GETSCHEDPOLICY
Section: POSIX Programmer's Manual (3P)
Updated: 2013
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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.1-2008,
<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
Electrical 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.kernel.org/doc/man-pages/reporting_bugs.html .
Index
- PROLOG
-
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- EXAMPLES
-
- APPLICATION USAGE
-
- RATIONALE
-
- FUTURE DIRECTIONS
-
- SEE ALSO
-
- COPYRIGHT
-
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