Adds a resolution mapping from the host name hostname to the IP address addr.
the hostname to match
the IP address to resolve to
Adds a resolution mapping the given service (on protocol and domain) to the IP address addr and given port.
the service name to match
the protocol name to match
the domain name to match
the IP address to resolve to
the port to resolve to
Creates a binding between source_property on source and target_property
on target.
Whenever the source_property is changed the target_property is
updated using the same value. For instance:
g_object_bind_property (action, "active", widget, "sensitive", 0);
Will result in the "sensitive" property of the widget #GObject instance to be updated with the same value of the "active" property of the action #GObject instance.
If flags contains %G_BINDING_BIDIRECTIONAL then the binding will be mutual:
if target_property on target changes then the source_property on source
will be updated as well.
The binding will automatically be removed when either the source or the
target instances are finalized. To remove the binding without affecting the
source and the target you can just call g_object_unref() on the returned
#GBinding instance.
Removing the binding by calling g_object_unref() on it must only be done if
the binding, source and target are only used from a single thread and it
is clear that both source and target outlive the binding. Especially it
is not safe to rely on this if the binding, source or target can be
finalized from different threads. Keep another reference to the binding and
use g_binding_unbind() instead to be on the safe side.
A #GObject can have multiple bindings.
the property on source to bind
the target #GObject
the property on target to bind
flags to pass to #GBinding
Creates a binding between source_property on source and target_property
on target, allowing you to set the transformation functions to be used by
the binding.
This function is the language bindings friendly version of g_object_bind_property_full(), using #GClosures instead of function pointers.
the property on source to bind
the target #GObject
the property on target to bind
flags to pass to #GBinding
a #GClosure wrapping the transformation function from the source to the target, or %NULL to use the default
a #GClosure wrapping the transformation function from the target to the source, or %NULL to use the default
This function is intended for #GObject implementations to re-enforce a [floating][floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink().
Increases the freeze count on object. If the freeze count is
non-zero, the emission of "notify" signals on object is
stopped. The signals are queued until the freeze count is decreased
to zero. Duplicate notifications are squashed so that at most one
#GObject::notify signal is emitted for each property modified while the
object is frozen.
This is necessary for accessors that modify multiple properties to prevent premature notification while the object is still being modified.
Gets a named field from the objects table of associations (see g_object_set_data()).
name of the key for that association
Gets a property of an object.
The value can be:
In general, a copy is made of the property contents and the caller is responsible for freeing the memory by calling g_value_unset().
Note that g_object_get_property() is really intended for language bindings, g_object_get() is much more convenient for C programming.
the name of the property to get
return location for the property value
This function gets back user data pointers stored via g_object_set_qdata().
A #GQuark, naming the user data pointer
Gets n_properties properties for an object.
Obtained properties will be set to values. All properties must be valid.
Warnings will be emitted and undefined behaviour may result if invalid
properties are passed in.
the names of each property to get
the values of each property to get
Checks whether object has a [floating][floating-ref] reference.
Synchronously reverse-resolves address to determine its
associated hostname.
If the DNS resolution fails, error (if non-%NULL) will be set to
a value from #GResolverError.
If cancellable is non-%NULL, it can be used to cancel the
operation, in which case error (if non-%NULL) will be set to
%G_IO_ERROR_CANCELLED.
the address to reverse-resolve
a #GCancellable, or %NULL
Begins asynchronously reverse-resolving address to determine its
associated hostname, and eventually calls callback, which must
call g_resolver_lookup_by_address_finish() to get the final result.
the address to reverse-resolve
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a previous call to g_resolver_lookup_by_address_async().
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
Synchronously resolves hostname to determine its associated IP
address(es). hostname may be an ASCII-only or UTF-8 hostname, or
the textual form of an IP address (in which case this just becomes
a wrapper around g_inet_address_new_from_string()).
On success, g_resolver_lookup_by_name() will return a non-empty #GList of
#GInetAddress, sorted in order of preference and guaranteed to not
contain duplicates. That is, if using the result to connect to
hostname, you should attempt to connect to the first address
first, then the second if the first fails, etc. If you are using
the result to listen on a socket, it is appropriate to add each
result using e.g. g_socket_listener_add_address().
If the DNS resolution fails, error (if non-%NULL) will be set to a
value from #GResolverError and %NULL will be returned.
If cancellable is non-%NULL, it can be used to cancel the
operation, in which case error (if non-%NULL) will be set to
%G_IO_ERROR_CANCELLED.
If you are planning to connect to a socket on the resolved IP address, it may be easier to create a #GNetworkAddress and use its #GSocketConnectable interface.
the hostname to look up
a #GCancellable, or %NULL
Begins asynchronously resolving hostname to determine its
associated IP address(es), and eventually calls callback, which
must call g_resolver_lookup_by_name_finish() to get the result.
See g_resolver_lookup_by_name() for more details.
the hostname to look up the address of
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a call to g_resolver_lookup_by_name_async().
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
This differs from g_resolver_lookup_by_name() in that you can modify
the lookup behavior with flags. For example this can be used to limit
results with %G_RESOLVER_NAME_LOOKUP_FLAGS_IPV4_ONLY.
the hostname to look up
extra #GResolverNameLookupFlags for the lookup
a #GCancellable, or %NULL
Begins asynchronously resolving hostname to determine its
associated IP address(es), and eventually calls callback, which
must call g_resolver_lookup_by_name_with_flags_finish() to get the result.
See g_resolver_lookup_by_name() for more details.
the hostname to look up the address of
extra #GResolverNameLookupFlags for the lookup
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a call to g_resolver_lookup_by_name_with_flags_async().
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
Synchronously performs a DNS record lookup for the given rrname and returns
a list of records as #GVariant tuples. See #GResolverRecordType for
information on what the records contain for each record_type.
If the DNS resolution fails, error (if non-%NULL) will be set to
a value from #GResolverError and %NULL will be returned.
If cancellable is non-%NULL, it can be used to cancel the
operation, in which case error (if non-%NULL) will be set to
%G_IO_ERROR_CANCELLED.
the DNS name to look up the record for
the type of DNS record to look up
a #GCancellable, or %NULL
Begins asynchronously performing a DNS lookup for the given
rrname, and eventually calls callback, which must call
g_resolver_lookup_records_finish() to get the final result. See
g_resolver_lookup_records() for more details.
the DNS name to look up the record for
the type of DNS record to look up
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a previous call to g_resolver_lookup_records_async(). Returns a non-empty list of records as #GVariant tuples. See #GResolverRecordType for information on what the records contain.
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
Synchronously performs a DNS SRV lookup for the given service and
protocol in the given domain and returns an array of #GSrvTarget.
domain may be an ASCII-only or UTF-8 hostname. Note also that the
service and protocol arguments do not include the leading underscore
that appears in the actual DNS entry.
On success, g_resolver_lookup_service() will return a non-empty #GList of #GSrvTarget, sorted in order of preference. (That is, you should attempt to connect to the first target first, then the second if the first fails, etc.)
If the DNS resolution fails, error (if non-%NULL) will be set to
a value from #GResolverError and %NULL will be returned.
If cancellable is non-%NULL, it can be used to cancel the
operation, in which case error (if non-%NULL) will be set to
%G_IO_ERROR_CANCELLED.
If you are planning to connect to the service, it is usually easier to create a #GNetworkService and use its #GSocketConnectable interface.
the service type to look up (eg, "ldap")
the networking protocol to use for service (eg, "tcp")
the DNS domain to look up the service in
a #GCancellable, or %NULL
Begins asynchronously performing a DNS SRV lookup for the given
service and protocol in the given domain, and eventually calls
callback, which must call g_resolver_lookup_service_finish() to
get the final result. See g_resolver_lookup_service() for more
details.
the service type to look up (eg, "ldap")
the networking protocol to use for service (eg, "tcp")
the DNS domain to look up the service in
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a previous call to g_resolver_lookup_service_async().
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
Emits a "notify" signal for the property property_name on object.
When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.
the name of a property installed on the class of object.
Emits a "notify" signal for the property specified by pspec on object.
This function omits the property name lookup, hence it is faster than g_object_notify().
One way to avoid using g_object_notify() from within the class that registered the properties, and using g_object_notify_by_pspec() instead, is to store the GParamSpec used with g_object_class_install_property() inside a static array, e.g.:
enum
{
PROP_0,
PROP_FOO,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static void
my_object_class_init (MyObjectClass *klass)
{
properties[PROP_FOO] = g_param_spec_int ("foo", "Foo", "The foo",
0, 100,
50,
G_PARAM_READWRITE);
g_object_class_install_property (gobject_class,
PROP_FOO,
properties[PROP_FOO]);
}
and then notify a change on the "foo" property with:
g_object_notify_by_pspec (self, properties[PROP_FOO]);
the #GParamSpec of a property installed on the class of object.
Increase the reference count of object, and possibly remove the
[floating][floating-ref] reference, if object has a floating reference.
In other words, if the object is floating, then this call "assumes ownership" of the floating reference, converting it to a normal reference by clearing the floating flag while leaving the reference count unchanged. If the object is not floating, then this call adds a new normal reference increasing the reference count by one.
Since GLib 2.56, the type of object will be propagated to the return type
under the same conditions as for g_object_ref().
Resets the state of the #UhmResolver, deleting all records added with uhm_resolver_add_A() and uhm_resolver_add_SRV().
Releases all references to other objects. This can be used to break reference cycles.
This function should only be called from object system implementations.
Each object carries around a table of associations from strings to pointers. This function lets you set an association.
If the object already had an association with that name, the old association will be destroyed.
Internally, the key is converted to a #GQuark using g_quark_from_string().
This means a copy of key is kept permanently (even after object has been
finalized) — so it is recommended to only use a small, bounded set of values
for key in your program, to avoid the #GQuark storage growing unbounded.
name of the key
data to associate with that key
Sets resolver to be the application's default resolver (reffing
resolver, and unreffing the previous default resolver, if any).
Future calls to g_resolver_get_default() will return this resolver.
This can be used if an application wants to perform any sort of DNS caching or "pinning"; it can implement its own #GResolver that calls the original default resolver for DNS operations, and implements its own cache policies on top of that, and then set itself as the default resolver for all later code to use.
Sets a property on an object.
the name of the property to set
the value
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
name of the key
This function gets back user data pointers stored via
g_object_set_qdata() and removes the data from object
without invoking its destroy() function (if any was
set).
Usually, calling this function is only required to update
user data pointers with a destroy notifier, for example:
void
object_add_to_user_list (GObject *object,
const gchar *new_string)
{
// the quark, naming the object data
GQuark quark_string_list = g_quark_from_static_string ("my-string-list");
// retrieve the old string list
GList *list = g_object_steal_qdata (object, quark_string_list);
// prepend new string
list = g_list_prepend (list, g_strdup (new_string));
// this changed 'list', so we need to set it again
g_object_set_qdata_full (object, quark_string_list, list, free_string_list);
}
static void
free_string_list (gpointer data)
{
GList *node, *list = data;
for (node = list; node; node = node->next)
g_free (node->data);
g_list_free (list);
}
Using g_object_get_qdata() in the above example, instead of g_object_steal_qdata() would have left the destroy function set, and thus the partial string list would have been freed upon g_object_set_qdata_full().
A #GQuark, naming the user data pointer
Reverts the effect of a previous call to
g_object_freeze_notify(). The freeze count is decreased on object
and when it reaches zero, queued "notify" signals are emitted.
Duplicate notifications for each property are squashed so that at most one #GObject::notify signal is emitted for each property, in the reverse order in which they have been queued.
It is an error to call this function when the freeze count is zero.
Decreases the reference count of object. When its reference count
drops to 0, the object is finalized (i.e. its memory is freed).
If the pointer to the #GObject may be reused in future (for example, if it is an instance variable of another object), it is recommended to clear the pointer to %NULL rather than retain a dangling pointer to a potentially invalid #GObject instance. Use g_clear_object() for this.
Synchronously reverse-resolves address to determine its
associated hostname.
If the DNS resolution fails, error (if non-%NULL) will be set to
a value from #GResolverError.
If cancellable is non-%NULL, it can be used to cancel the
operation, in which case error (if non-%NULL) will be set to
%G_IO_ERROR_CANCELLED.
the address to reverse-resolve
a #GCancellable, or %NULL
Begins asynchronously reverse-resolving address to determine its
associated hostname, and eventually calls callback, which must
call g_resolver_lookup_by_address_finish() to get the final result.
the address to reverse-resolve
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a previous call to g_resolver_lookup_by_address_async().
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
Synchronously resolves hostname to determine its associated IP
address(es). hostname may be an ASCII-only or UTF-8 hostname, or
the textual form of an IP address (in which case this just becomes
a wrapper around g_inet_address_new_from_string()).
On success, g_resolver_lookup_by_name() will return a non-empty #GList of
#GInetAddress, sorted in order of preference and guaranteed to not
contain duplicates. That is, if using the result to connect to
hostname, you should attempt to connect to the first address
first, then the second if the first fails, etc. If you are using
the result to listen on a socket, it is appropriate to add each
result using e.g. g_socket_listener_add_address().
If the DNS resolution fails, error (if non-%NULL) will be set to a
value from #GResolverError and %NULL will be returned.
If cancellable is non-%NULL, it can be used to cancel the
operation, in which case error (if non-%NULL) will be set to
%G_IO_ERROR_CANCELLED.
If you are planning to connect to a socket on the resolved IP address, it may be easier to create a #GNetworkAddress and use its #GSocketConnectable interface.
the hostname to look up
a #GCancellable, or %NULL
Begins asynchronously resolving hostname to determine its
associated IP address(es), and eventually calls callback, which
must call g_resolver_lookup_by_name_finish() to get the result.
See g_resolver_lookup_by_name() for more details.
the hostname to look up the address of
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a call to g_resolver_lookup_by_name_async().
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
This differs from g_resolver_lookup_by_name() in that you can modify
the lookup behavior with flags. For example this can be used to limit
results with %G_RESOLVER_NAME_LOOKUP_FLAGS_IPV4_ONLY.
the hostname to look up
extra #GResolverNameLookupFlags for the lookup
a #GCancellable, or %NULL
Begins asynchronously resolving hostname to determine its
associated IP address(es), and eventually calls callback, which
must call g_resolver_lookup_by_name_with_flags_finish() to get the result.
See g_resolver_lookup_by_name() for more details.
the hostname to look up the address of
extra #GResolverNameLookupFlags for the lookup
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a call to g_resolver_lookup_by_name_with_flags_async().
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
Synchronously performs a DNS record lookup for the given rrname and returns
a list of records as #GVariant tuples. See #GResolverRecordType for
information on what the records contain for each record_type.
If the DNS resolution fails, error (if non-%NULL) will be set to
a value from #GResolverError and %NULL will be returned.
If cancellable is non-%NULL, it can be used to cancel the
operation, in which case error (if non-%NULL) will be set to
%G_IO_ERROR_CANCELLED.
the DNS name to look up the record for
the type of DNS record to look up
a #GCancellable, or %NULL
Begins asynchronously performing a DNS lookup for the given
rrname, and eventually calls callback, which must call
g_resolver_lookup_records_finish() to get the final result. See
g_resolver_lookup_records() for more details.
the DNS name to look up the record for
the type of DNS record to look up
a #GCancellable, or %NULL
callback to call after resolution completes
Retrieves the result of a previous call to g_resolver_lookup_records_async(). Returns a non-empty list of records as #GVariant tuples. See #GResolverRecordType for information on what the records contain.
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
Retrieves the result of a previous call to g_resolver_lookup_service_async().
If the DNS resolution failed, error (if non-%NULL) will be set to
a value from #GResolverError. If the operation was cancelled,
error will be set to %G_IO_ERROR_CANCELLED.
the result passed to your #GAsyncReadyCallback
Emits a "notify" signal for the property property_name on object.
When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.
This function essentially limits the life time of the closure to
the life time of the object. That is, when the object is finalized,
the closure is invalidated by calling g_closure_invalidate() on
it, in order to prevent invocations of the closure with a finalized
(nonexisting) object. Also, g_object_ref() and g_object_unref() are
added as marshal guards to the closure, to ensure that an extra
reference count is held on object during invocation of the
closure. Usually, this function will be called on closures that
use this object as closure data.
#GClosure to watch
Find the #GParamSpec with the given name for an
interface. Generally, the interface vtable passed in as g_iface
will be the default vtable from g_type_default_interface_ref(), or,
if you know the interface has already been loaded,
g_type_default_interface_peek().
any interface vtable for the interface, or the default vtable for the interface
name of a property to look up.
Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created #GParamSpec, but normally g_object_class_override_property() will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property.
This function is meant to be called from the interface's default
vtable initialization function (the class_init member of
#GTypeInfo.) It must not be called after after class_init has
been called for any object types implementing this interface.
If pspec is a floating reference, it will be consumed.
any interface vtable for the interface, or the default vtable for the interface.
the #GParamSpec for the new property
Lists the properties of an interface.Generally, the interface
vtable passed in as g_iface will be the default vtable from
g_type_default_interface_ref(), or, if you know the interface has
already been loaded, g_type_default_interface_peek().
any interface vtable for the interface, or the default vtable for the interface
Creates a new instance of a #GObject subtype and sets its properties.
Construction parameters (see %G_PARAM_CONSTRUCT, %G_PARAM_CONSTRUCT_ONLY) which are not explicitly specified are set to their default values.
the type id of the #GObject subtype to instantiate
an array of #GParameter
All the fields in the #UhmResolver structure are private and should never be accessed directly.