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POSIX_SPAWNATTR_GETSCHEDPARAM
Section: POSIX Programmer's Manual (3P)
Updated: 2003
Index
Return to Main Contents
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_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 .
Index
- PROLOG
-
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- EXAMPLES
-
- APPLICATION USAGE
-
- RATIONALE
-
- FUTURE DIRECTIONS
-
- SEE ALSO
-
- COPYRIGHT
-
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