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POSIX_SPAWNATTR_GETSCHEDPOLICY(P) POSIX_SPAWNATTR_GETSCHEDPOLICY(P)
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 refer-
enced 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_init() , posix_spaw-
nattr_getsigdefault() , posix_spawnattr_getflags() , posix_spawnattr_getpgroup() ,
posix_spawnattr_getschedparam() , posix_spawnattr_getsigmask() , posix_spaw-
nattr_setsigdefault() , posix_spawnattr_setflags() , posix_spawnattr_setpgroup() ,
posix_spawnattr_setschedparam() , 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 .
POSIX 2003 POSIX_SPAWNATTR_GETSCHEDPOLICY(P)
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