POSIX_SPAWNATTR_GETSCHEDPARAM(3C) Standard C Library Functions
NAME
posix_spawnattr_getschedparam, posix_spawnattr_setschedparam - get
and set spawn-schedparam attribute of spawn attributes object
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 obtains the value of the
spawn-schedparam attribute from the attributes object referenced by
attr.
The
posix_spawnattr_setschedparam() function sets 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 VALUES
Upon successful completion,
posix_spawnattr_getschedparam() returns 0
and stores the value of the
spawn-schedparam attribute of
attr into
the object referenced by the
schedparam parameter. Otherwise, an
error number is returned to indicate the error.
Upon successful completion,
posix_spawnattr_setschedparam() returns
0. Otherwise, an error number is 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.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
SEE ALSO
posix_spawn(3C),
posix_spawnattr_destroy(3C),
posix_spawnattr_getflags(3C),
posix_spawnattr_getpgroup(3C),
posix_spawnattr_getschedpolicy(3C),
posix_spawnattr_getsigdefault(3C),
posix_spawnattr_getsigmask(3C),
attributes(7),
standards(7) January 30, 2004
POSIX_SPAWNATTR_GETSCHEDPARAM(3C)
