POSIX_SPAWNATTR_DESTROY(3C) Standard C Library Functions
NAME
posix_spawnattr_destroy, posix_spawnattr_init - destroy and initialize
spawn attributes object
SYNOPSIS
#include <spawn.h>
int posix_spawnattr_destroy(
posix_spawnattr_t *attr);
int posix_spawnattr_init(
posix_spawnattr_t *attr);
DESCRIPTION
The
posix_spawnattr_destroy() function destroys a spawn attributes
object. A destroyed
attr attributes object can be reinitialized using
posix_spawnattr_init(). The results of otherwise referencing the object
after it has been destroyed are undefined. An implementation can cause
posix_spawnattr_destroy() to set the object referenced by
attr to an
invalid value.
The
posix_spawnattr_init() function initializes a spawn attributes object
attr with the default value for all of the individual attributes used by
the implementation. Results are undefined if
posix_spawnattr_init() is
called specifying an already initialized
attr attributes object.
A spawn attributes object is of type
posix_spawnattr_t (defined in
<
spawn.h>) and is used to specify the inheritance of process attributes
across a spawn operation.
No attributes other than those defined by IEEE Std 1003.1-200x are
provided.
The resulting spawn attributes object (possibly modified by setting
individual attribute values), is used to modify the behavior of
posix_spawn(3C) or
posix_spawnp(3C). After a spawn attributes object has
been used to spawn a process by a call to
posix_spawn() or
posix_spawnp(), any function affecting the attributes object (including
destruction) will not affect any process that has been spawned in this
way.
RETURN VALUES
Upon successful completion,
posix_spawnattr_destroy() and
posix_spawnattr_init() return 0. Otherwise, an error number is returned
to indicate the error.
ERRORS
The
posix_spawnattr_init() function will fail if:
ENOMEM Insufficient memory exists to initialize the spawn attributes
object.
The
posix_spawnattr_destroy() function may fail if:
EINVAL The value specified by
attr is invalid.
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_getflags(3C),
posix_spawnattr_getpgroup(3C),
posix_spawnattr_getschedparam(3C),
posix_spawnattr_getschedpolicy(3C),
posix_spawnattr_getsigdefault(3C),
posix_spawnattr_getsigmask(3C),
attributes(7),
standards(7) January 30, 2004
POSIX_SPAWNATTR_DESTROY(3C)