/*
* TODO for GDBus:
*
- * - Validate all data (e.g. UTF-8) and check all the required D-Bus headers
- * are present and forbidden ones aren't
- * - When writing: g_dbus_message_to_blob()
- * - When reading: g_dbus_message_new_from_blob()
- *
* - would be nice to expose GDBusAuthMechanism and an extension point
*
* - Need to rewrite GDBusAuth and rework GDBusAuthMechanism. In particular
* distribution)
*
* - (ideally) this requires D-Bus spec work because none of
- * this has never really been specced out properly (excect
+ * this has never really been specced out properly (except
* the X11 bits)
*
* - Related to the above, we also need to be able to launch a message bus
* - probably want a G_DBUS_NONCE_TCP_TMPDIR environment variable
* to specify where the nonce is stored. This will allow people to use
* G_DBUS_NONCE_TCP_TMPDIR=/mnt/secure.company.server/dbus-nonce-dir
- * to easily acheive secure RPC via nonce-tcp.
+ * to easily achieve secure RPC via nonce-tcp.
*
* - need to expose an extension point for resolving D-Bus address and
* turning them into GIOStream objects. This will allow us to implement
* kind of pitfalls it avoids
* - Export objects before claiming names
* - Talk about auto-starting services (cf. GBusNameWatcherFlags)
+ *
+ * - use abstract sockets in test code
+ * - right now it doesn't work, dbus-daemon(1) fails with
+ *
+ * /gdbus/connection/filter: Failed to start message bus: Failed to bind
+ * socket "/tmp/g-dbus-tests-pid-28531": Address already in use
+ * ** WARNING **: Error reading address from dbus daemon, 0 bytes read
+ *
+ * or similar.
*/
#include "config.h"
#include "gdbusmethodinvocation.h"
#include "gdbusprivate.h"
#include "gdbusauthobserver.h"
-#include "gio-marshal.h"
#include "ginitable.h"
#include "gasyncinitable.h"
#include "giostream.h"
* an D-Bus client, it is often easier to use the g_bus_own_name(),
* g_bus_watch_name() or g_dbus_proxy_new_for_bus() APIs.
*
+ * Most of the ways to obtain a #GDBusConnection automatically initialize it
+ * (i.e. connect to D-Bus): for instance, g_dbus_connection_new() and
+ * g_bus_get(), and the synchronous versions of those methods, give you an
+ * initialized connection. Language bindings for GIO should use
+ * g_initable_new() or g_async_initable_new(), which also initialize the
+ * connection.
+ *
+ * If you construct an uninitialized #GDBusConnection, such as via
+ * g_object_new(), you must initialize it via g_initable_init() or
+ * g_async_initable_init() before using its methods or properties. Calling
+ * methods or accessing properties on a #GDBusConnection that has not completed
+ * initialization successfully is considered to be invalid, and leads to
+ * undefined behaviour. In particular, if initialization fails with a #GError,
+ * the only valid thing you can do with that #GDBusConnection is to free it
+ * with g_object_unref().
+ *
* <example id="gdbus-server"><title>D-Bus server example</title><programlisting><xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gdbus-example-server.c"><xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback></xi:include></programlisting></example>
*
* <example id="gdbus-subtree-server"><title>D-Bus subtree example</title><programlisting><xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gdbus-example-subtree.c"><xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback></xi:include></programlisting></example>
static GDBusConnection *the_session_bus = NULL;
static GDBusConnection *the_system_bus = NULL;
+/* Extra pseudo-member of GDBusSendMessageFlags.
+ * Set by initable_init() to indicate that despite not being initialized yet,
+ * enough of the only-valid-after-init members are set that we can send a
+ * message, and we're being called from its thread, so no memory barrier is
+ * required before accessing them.
+ */
+#define SEND_MESSAGE_FLAGS_INITIALIZING (1<<31)
+
+/* Same as SEND_MESSAGE_FLAGS_INITIALIZING, but in GDBusCallFlags */
+#define CALL_FLAGS_INITIALIZING (1<<31)
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+typedef struct
+{
+ GDestroyNotify callback;
+ gpointer user_data;
+ GMainContext *context;
+} CallDestroyNotifyData;
+
+static gboolean
+call_destroy_notify_data_in_idle (gpointer user_data)
+{
+ CallDestroyNotifyData *data = user_data;
+ data->callback (data->user_data);
+ return FALSE;
+}
+
+static void
+call_destroy_notify_data_free (CallDestroyNotifyData *data)
+{
+ if (data->context != NULL)
+ g_main_context_unref (data->context);
+ g_free (data);
+}
+
+/*
+ * call_destroy_notify: <internal>
+ * @context: A #GMainContext or %NULL.
+ * @callback: A #GDestroyNotify or %NULL.
+ * @user_data: Data to pass to @callback.
+ *
+ * Schedules @callback to run in @context.
+ */
+static void
+call_destroy_notify (GMainContext *context,
+ GDestroyNotify callback,
+ gpointer user_data)
+{
+ GMainContext *current_context;
+
+ if (callback == NULL)
+ goto out;
+
+ current_context = g_main_context_get_thread_default ();
+ if ((context == current_context) ||
+ (current_context == NULL && context == g_main_context_default ()))
+ {
+ callback (user_data);
+ }
+ else
+ {
+ GSource *idle_source;
+ CallDestroyNotifyData *data;
+
+ data = g_new0 (CallDestroyNotifyData, 1);
+ data->callback = callback;
+ data->user_data = user_data;
+ data->context = context;
+ if (data->context != NULL)
+ g_main_context_ref (data->context);
+
+ idle_source = g_idle_source_new ();
+ g_source_set_priority (idle_source, G_PRIORITY_DEFAULT);
+ g_source_set_callback (idle_source,
+ call_destroy_notify_data_in_idle,
+ data,
+ (GDestroyNotify) call_destroy_notify_data_free);
+ g_source_attach (idle_source, data->context);
+ g_source_unref (idle_source);
+ }
+
+ out:
+ ;
+}
+
/* ---------------------------------------------------------------------------------------------------- */
static gboolean
#else
// TODO: for some reason this doesn't work on Windows
#define CONNECTION_ENSURE_LOCK(obj) do { \
- if (G_UNLIKELY (g_mutex_trylock((obj)->lock))) \
+ if (G_UNLIKELY (g_mutex_trylock(&(obj)->lock))) \
{ \
g_assertion_message (G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
"CONNECTION_ENSURE_LOCK: GDBusConnection object lock is not locked"); \
#endif
#define CONNECTION_LOCK(obj) do { \
- g_mutex_lock ((obj)->lock); \
+ g_mutex_lock (&(obj)->lock); \
} while (FALSE)
#define CONNECTION_UNLOCK(obj) do { \
- g_mutex_unlock ((obj)->lock); \
+ g_mutex_unlock (&(obj)->lock); \
} while (FALSE)
+/* Flags in connection->atomic_flags */
+enum {
+ FLAG_INITIALIZED = 1 << 0,
+ FLAG_EXIT_ON_CLOSE = 1 << 1,
+ FLAG_CLOSED = 1 << 2
+};
+
/**
* GDBusConnection:
*
/* -- General object state ------------------------------------------------ */
/* ------------------------------------------------------------------------ */
- /* object-wide lock */
- GMutex *lock;
+ /* General-purpose lock for most fields */
+ GMutex lock;
/* A lock used in the init() method of the GInitable interface - see comments
- * in initable_init() for why a separate lock is needed
+ * in initable_init() for why a separate lock is needed.
+ *
+ * If you need both @lock and @init_lock, you must take @init_lock first.
*/
- GMutex *init_lock;
+ GMutex init_lock;
/* Set (by loading the contents of /var/lib/dbus/machine-id) the first time
- * someone calls org.freedesktop.DBus.GetMachineId()
+ * someone calls org.freedesktop.DBus.GetMachineId(). Protected by @lock.
*/
gchar *machine_id;
- /* The underlying stream used for communication */
+ /* The underlying stream used for communication
+ * Read-only after initable_init(), so it may be read if you either
+ * hold @init_lock or check for initialization first.
+ */
GIOStream *stream;
- /* The object used for authentication (if any) */
+ /* The object used for authentication (if any).
+ * Read-only after initable_init(), so it may be read if you either
+ * hold @init_lock or check for initialization first.
+ */
GDBusAuth *auth;
- /* Set to TRUE if the connection has been closed */
- gboolean closed;
-
- /* Last serial used */
+ /* Last serial used. Protected by @lock. */
guint32 last_serial;
- /* The object used to send/receive message */
+ /* The object used to send/receive messages.
+ * Read-only after initable_init(), so it may be read if you either
+ * hold @init_lock or check for initialization first.
+ */
GDBusWorker *worker;
/* If connected to a message bus, this contains the unique name assigned to
- * us by the bus (e.g. ":1.42")
+ * us by the bus (e.g. ":1.42").
+ * Read-only after initable_init(), so it may be read if you either
+ * hold @init_lock or check for initialization first.
*/
gchar *bus_unique_name;
/* The GUID returned by the other side if we authenticed as a client or
- * the GUID to use if authenticating as a server
+ * the GUID to use if authenticating as a server.
+ * Read-only after initable_init(), so it may be read if you either
+ * hold @init_lock or check for initialization first.
*/
gchar *guid;
- /* set to TRUE exactly when initable_init() has finished running */
- gboolean is_initialized;
+ /* FLAG_INITIALIZED is set exactly when initable_init() has finished running.
+ * Inspect @initialization_error to see whether it succeeded or failed.
+ *
+ * FLAG_EXIT_ON_CLOSE is the exit-on-close property.
+ *
+ * FLAG_CLOSED is the closed property. It may be read at any time, but
+ * may only be written while holding @lock.
+ */
+ volatile gint atomic_flags;
- /* If the connection could not be established during initable_init(), this GError will set */
+ /* If the connection could not be established during initable_init(),
+ * this GError will be set.
+ * Read-only after initable_init(), so it may be read if you either
+ * hold @init_lock or check for initialization first.
+ */
GError *initialization_error;
- /* The result of g_main_context_get_thread_default() when the object
+ /* The result of g_main_context_ref_thread_default() when the object
* was created (the GObject _init() function) - this is used for delivery
* of the :closed GObject signal.
+ *
+ * Only set in the GObject init function, so no locks are needed.
*/
GMainContext *main_context_at_construction;
- /* construct properties */
+ /* Read-only construct properties, no locks needed */
gchar *address;
GDBusConnectionFlags flags;
- /* Map used for managing method replies */
+ /* Map used for managing method replies, protected by @lock */
GHashTable *map_method_serial_to_send_message_data; /* guint32 -> SendMessageData* */
- /* Maps used for managing signal subscription */
+ /* Maps used for managing signal subscription, protected by @lock */
GHashTable *map_rule_to_signal_data; /* match rule (gchar*) -> SignalData */
GHashTable *map_id_to_signal_data; /* id (guint) -> SignalData */
GHashTable *map_sender_unique_name_to_signal_data_array; /* unique sender (gchar*) -> GPtrArray* of SignalData */
- /* Maps used for managing exported objects and subtrees */
+ /* Maps used for managing exported objects and subtrees,
+ * protected by @lock
+ */
GHashTable *map_object_path_to_eo; /* gchar* -> ExportedObject* */
GHashTable *map_id_to_ei; /* guint -> ExportedInterface* */
GHashTable *map_object_path_to_es; /* gchar* -> ExportedSubtree* */
GHashTable *map_id_to_es; /* guint -> ExportedSubtree* */
- /* Structure used for message filters */
+ /* Structure used for message filters, protected by @lock */
GPtrArray *filters;
- /* Whether to exit on close */
- gboolean exit_on_close;
-
- /* Capabilities negotiated during authentication */
+ /* Capabilities negotiated during authentication
+ * Read-only after initable_init(), so it may be read without holding a
+ * lock, if you check for initialization first.
+ */
GDBusCapabilityFlags capabilities;
+ /* Protected by @init_lock */
GDBusAuthObserver *authentication_observer;
- GCredentials *crendentials;
+
+ /* Read-only after initable_init(), so it may be read if you either
+ * hold @init_lock or check for initialization first.
+ */
+ GCredentials *credentials;
/* set to TRUE when finalizing */
gboolean finalizing;
G_IMPLEMENT_INTERFACE (G_TYPE_ASYNC_INITABLE, async_initable_iface_init)
);
+/*
+ * Check that all members of @connection that can only be accessed after
+ * the connection is initialized can safely be accessed. If not,
+ * log a critical warning. This function is a memory barrier.
+ *
+ * Returns: %TRUE if initialized
+ */
+static gboolean
+check_initialized (GDBusConnection *connection)
+{
+ /* The access to @atomic_flags isn't conditional, so that this function
+ * provides a memory barrier for thread-safety even if checks are disabled.
+ * (If you don't want this stricter guarantee, you can call
+ * g_return_if_fail (check_initialized (c)).)
+ *
+ * This isn't strictly necessary now that we've decided use of an
+ * uninitialized GDBusConnection is undefined behaviour, but it seems
+ * better to be as deterministic as is feasible.
+ *
+ * (Anything that could suffer a crash from seeing undefined values
+ * must have a race condition - thread A initializes the connection while
+ * thread B calls a method without initialization, hoping that thread A will
+ * win the race - so its behaviour is undefined anyway.)
+ */
+ gint flags = g_atomic_int_get (&connection->atomic_flags);
+
+ g_return_val_if_fail (flags & FLAG_INITIALIZED, FALSE);
+
+ /* We can safely access this, due to the memory barrier above */
+ g_return_val_if_fail (connection->initialization_error == NULL, FALSE);
+
+ return TRUE;
+}
+
+typedef enum {
+ MAY_BE_UNINITIALIZED = (1<<1)
+} CheckUnclosedFlags;
+
+/*
+ * Check the same thing as check_initialized(), and also that the
+ * connection is not closed. If the connection is uninitialized,
+ * raise a critical warning (it's programmer error); if it's closed,
+ * raise a recoverable GError (it's a runtime error).
+ *
+ * This function is a memory barrier.
+ *
+ * Returns: %TRUE if initialized and not closed
+ */
+static gboolean
+check_unclosed (GDBusConnection *connection,
+ CheckUnclosedFlags check,
+ GError **error)
+{
+ /* check_initialized() is effectively inlined, so we don't waste time
+ * doing two memory barriers
+ */
+ gint flags = g_atomic_int_get (&connection->atomic_flags);
+
+ if (!(check & MAY_BE_UNINITIALIZED))
+ {
+ g_return_val_if_fail (flags & FLAG_INITIALIZED, FALSE);
+ g_return_val_if_fail (connection->initialization_error == NULL, FALSE);
+ }
+
+ if (flags & FLAG_CLOSED)
+ {
+ g_set_error_literal (error,
+ G_IO_ERROR,
+ G_IO_ERROR_CLOSED,
+ _("The connection is closed"));
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static GHashTable *alive_connections = NULL;
+
static void
g_dbus_connection_dispose (GObject *object)
{
GDBusConnection *connection = G_DBUS_CONNECTION (object);
G_LOCK (message_bus_lock);
- //g_debug ("disposing %p", connection);
if (connection == the_session_bus)
{
the_session_bus = NULL;
{
the_system_bus = NULL;
}
+ CONNECTION_LOCK (connection);
if (connection->worker != NULL)
{
_g_dbus_worker_stop (connection->worker);
connection->worker = NULL;
+ if (alive_connections != NULL)
+ g_warn_if_fail (g_hash_table_remove (alive_connections, connection));
}
+ else
+ {
+ if (alive_connections != NULL)
+ g_warn_if_fail (g_hash_table_lookup (alive_connections, connection) == NULL);
+ }
+ CONNECTION_UNLOCK (connection);
G_UNLOCK (message_bus_lock);
if (G_OBJECT_CLASS (g_dbus_connection_parent_class)->dispose != NULL)
if (connection->auth != NULL)
g_object_unref (connection->auth);
+ if (connection->credentials)
+ g_object_unref (connection->credentials);
+
if (connection->stream != NULL)
{
- /* We don't really care if closing the stream succeeds or not */
- g_io_stream_close_async (connection->stream,
- G_PRIORITY_DEFAULT,
- NULL, /* GCancellable */
- NULL, /* GAsyncReadyCallback */
- NULL); /* userdata */
g_object_unref (connection->stream);
connection->stream = NULL;
}
g_hash_table_unref (connection->map_id_to_es);
g_hash_table_unref (connection->map_object_path_to_es);
- if (connection->main_context_at_construction != NULL)
- g_main_context_unref (connection->main_context_at_construction);
+ g_main_context_unref (connection->main_context_at_construction);
g_free (connection->machine_id);
- g_mutex_free (connection->init_lock);
- g_mutex_free (connection->lock);
+ g_mutex_clear (&connection->init_lock);
+ g_mutex_clear (&connection->lock);
G_OBJECT_CLASS (g_dbus_connection_parent_class)->finalize (object);
}
+/* called in any user thread, with the connection's lock not held */
static void
g_dbus_connection_get_property (GObject *object,
guint prop_id,
}
}
+/* called in any user thread, with the connection's lock not held */
static void
g_dbus_connection_set_property (GObject *object,
guint prop_id,
}
}
+/* Base-class implementation of GDBusConnection::closed.
+ *
+ * Called in a user thread, by the main context that was thread-default when
+ * the object was constructed.
+ */
static void
g_dbus_connection_real_closed (GDBusConnection *connection,
gboolean remote_peer_vanished,
GError *error)
{
- if (remote_peer_vanished && connection->exit_on_close)
+ gint flags = g_atomic_int_get (&connection->atomic_flags);
+
+ /* Because atomic int access is a memory barrier, we can safely read
+ * initialization_error without a lock, as long as we do it afterwards.
+ */
+ if (remote_peer_vanished &&
+ (flags & FLAG_EXIT_ON_CLOSE) != 0 &&
+ (flags & FLAG_INITIALIZED) != 0 &&
+ connection->initialization_error == NULL)
{
- g_print ("%s: Remote peer vanished. Exiting.\n", G_STRFUNC);
+ if (error != NULL)
+ {
+ g_print ("%s: Remote peer vanished with error: %s (%s, %d). Exiting.\n",
+ G_STRFUNC,
+ error->message,
+ g_quark_to_string (error->domain), error->code);
+ }
+ else
+ {
+ g_print ("%s: Remote peer vanished. Exiting.\n", G_STRFUNC);
+ }
raise (SIGTERM);
}
}
*
* The underlying #GIOStream used for I/O.
*
+ * If this is passed on construction and is a #GSocketConnection,
+ * then the corresponding #GSocket will be put into non-blocking mode.
+ *
+ * While the #GDBusConnection is active, it will interact with this
+ * stream from a worker thread, so it is not safe to interact with
+ * the stream directly.
+ *
* Since: 2.26
*/
g_object_class_install_property (gobject_class,
G_STRUCT_OFFSET (GDBusConnectionClass, closed),
NULL,
NULL,
- _gio_marshal_VOID__BOOLEAN_BOXED,
+ NULL,
G_TYPE_NONE,
2,
G_TYPE_BOOLEAN,
static void
g_dbus_connection_init (GDBusConnection *connection)
{
- connection->lock = g_mutex_new ();
- connection->init_lock = g_mutex_new ();
+ g_mutex_init (&connection->lock);
+ g_mutex_init (&connection->init_lock);
connection->map_method_serial_to_send_message_data = g_hash_table_new (g_direct_hash, g_direct_equal);
connection->map_sender_unique_name_to_signal_data_array = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free,
- NULL);
+ (GDestroyNotify) g_ptr_array_unref);
connection->map_object_path_to_eo = g_hash_table_new_full (g_str_hash,
g_str_equal,
connection->map_id_to_es = g_hash_table_new (g_direct_hash,
g_direct_equal);
- connection->main_context_at_construction = g_main_context_get_thread_default ();
- if (connection->main_context_at_construction != NULL)
- g_main_context_ref (connection->main_context_at_construction);
+ connection->main_context_at_construction = g_main_context_ref_thread_default ();
connection->filters = g_ptr_array_new ();
}
*
* Gets the underlying stream used for IO.
*
- * Returns: the stream used for IO
+ * While the #GDBusConnection is active, it will interact with this
+ * stream from a worker thread, so it is not safe to interact with
+ * the stream directly.
+ *
+ * Returns: (transfer none): the stream used for IO
*
* Since: 2.26
*/
g_dbus_connection_get_stream (GDBusConnection *connection)
{
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), NULL);
+
+ /* do not use g_return_val_if_fail(), we want the memory barrier */
+ if (!check_initialized (connection))
+ return NULL;
+
return connection->stream;
}
g_dbus_connection_start_message_processing (GDBusConnection *connection)
{
g_return_if_fail (G_IS_DBUS_CONNECTION (connection));
+
+ /* do not use g_return_val_if_fail(), we want the memory barrier */
+ if (!check_initialized (connection))
+ return;
+
+ g_assert (connection->worker != NULL);
_g_dbus_worker_unfreeze (connection->worker);
}
gboolean
g_dbus_connection_is_closed (GDBusConnection *connection)
{
+ gint flags;
+
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), FALSE);
- return connection->closed;
+
+ flags = g_atomic_int_get (&connection->atomic_flags);
+
+ return (flags & FLAG_CLOSED) ? TRUE : FALSE;
}
/**
g_dbus_connection_get_capabilities (GDBusConnection *connection)
{
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), G_DBUS_CAPABILITY_FLAGS_NONE);
+
+ /* do not use g_return_val_if_fail(), we want the memory barrier */
+ if (!check_initialized (connection))
+ return G_DBUS_CAPABILITY_FLAGS_NONE;
+
return connection->capabilities;
}
/* ---------------------------------------------------------------------------------------------------- */
+/* Called in a temporary thread without holding locks. */
static void
flush_in_thread_func (GSimpleAsyncResult *res,
GObject *object,
if (!g_dbus_connection_flush_sync (G_DBUS_CONNECTION (object),
cancellable,
&error))
- {
- g_simple_async_result_set_from_error (res, error);
- g_error_free (error);
- }
+ g_simple_async_result_take_error (res, error);
}
/**
* g_dbus_connection_flush:
* @connection: A #GDBusConnection.
* @cancellable: A #GCancellable or %NULL.
- * @callback: A #GAsyncReadyCallback to call when the request is satisfied or %NULL if you don't
- * care about the result.
+ * @callback: (allow-none): A #GAsyncReadyCallback to call when the request is
+ * satisfied or %NULL if you don't care about the result.
* @user_data: The data to pass to @callback.
*
* Asynchronously flushes @connection, that is, writes all queued
ret = FALSE;
- if (connection->closed)
- {
- g_set_error_literal (error,
- G_IO_ERROR,
- G_IO_ERROR_CLOSED,
- _("The connection is closed"));
- goto out;
- }
+ /* This is only a best-effort attempt to see whether the connection is
+ * closed, so it doesn't need the lock. If the connection closes just
+ * after this check, but before scheduling the flush operation, the
+ * result will be more or less the same as if the connection closed while
+ * the flush operation was pending - it'll fail with either CLOSED or
+ * CANCELLED.
+ */
+ if (!check_unclosed (connection, 0, error))
+ goto out;
+
+ g_assert (connection->worker != NULL);
ret = _g_dbus_worker_flush_sync (connection->worker,
cancellable,
g_free (data);
}
+/* Called in a user thread that has acquired the main context that was
+ * thread-default when the object was constructed
+ */
static gboolean
emit_closed_in_idle (gpointer user_data)
{
return FALSE;
}
-/* Can be called from any thread, must hold lock */
+/* Can be called from any thread, must hold lock.
+ * FLAG_CLOSED must already have been set.
+ */
static void
-set_closed_unlocked (GDBusConnection *connection,
- gboolean remote_peer_vanished,
- GError *error)
+schedule_closed_unlocked (GDBusConnection *connection,
+ gboolean remote_peer_vanished,
+ GError *error)
{
GSource *idle_source;
EmitClosedData *data;
CONNECTION_ENSURE_LOCK (connection);
- g_assert (!connection->closed);
-
- connection->closed = TRUE;
-
data = g_new0 (EmitClosedData, 1);
data->connection = g_object_ref (connection);
data->remote_peer_vanished = remote_peer_vanished;
/* ---------------------------------------------------------------------------------------------------- */
-static void
-close_in_thread_func (GSimpleAsyncResult *res,
- GObject *object,
- GCancellable *cancellable)
-{
- GError *error;
-
- error = NULL;
- if (!g_dbus_connection_close_sync (G_DBUS_CONNECTION (object),
- cancellable,
- &error))
- {
- g_simple_async_result_set_from_error (res, error);
- g_error_free (error);
- }
-}
-
/**
* g_dbus_connection_close:
* @connection: A #GDBusConnection.
* @cancellable: A #GCancellable or %NULL.
- * @callback: A #GAsyncReadyCallback to call when the request is satisfied or %NULL if you don't
- * care about the result.
+ * @callback: (allow-none): A #GAsyncReadyCallback to call when the request is
+ * satisfied or %NULL if you don't care about the result.
* @user_data: The data to pass to @callback.
*
* Closes @connection. Note that this never causes the process to
g_return_if_fail (G_IS_DBUS_CONNECTION (connection));
+ /* do not use g_return_val_if_fail(), we want the memory barrier */
+ if (!check_initialized (connection))
+ return;
+
+ g_assert (connection->worker != NULL);
+
simple = g_simple_async_result_new (G_OBJECT (connection),
callback,
user_data,
g_dbus_connection_close);
- g_simple_async_result_run_in_thread (simple,
- close_in_thread_func,
- G_PRIORITY_DEFAULT,
- cancellable);
+ _g_dbus_worker_close (connection->worker, cancellable, simple);
g_object_unref (simple);
}
return ret;
}
+typedef struct {
+ GMainLoop *loop;
+ GAsyncResult *result;
+} SyncCloseData;
+
+/* Can be called by any thread, without the connection lock */
+static void
+sync_close_cb (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ SyncCloseData *data = user_data;
+
+ data->result = g_object_ref (res);
+ g_main_loop_quit (data->loop);
+}
+
/**
* g_dbus_connection_close_sync:
* @connection: A #GDBusConnection.
ret = FALSE;
- CONNECTION_LOCK (connection);
- if (!connection->closed)
- {
- ret = g_io_stream_close (connection->stream,
- cancellable,
- error);
- if (ret)
- set_closed_unlocked (connection, FALSE, NULL);
- }
- else
+ if (check_unclosed (connection, 0, error))
{
- g_set_error_literal (error,
- G_IO_ERROR,
- G_IO_ERROR_CLOSED,
- _("The connection is closed"));
+ GMainContext *context;
+ SyncCloseData data;
+
+ context = g_main_context_new ();
+ g_main_context_push_thread_default (context);
+ data.loop = g_main_loop_new (context, TRUE);
+ data.result = NULL;
+
+ g_dbus_connection_close (connection, cancellable, sync_close_cb, &data);
+ g_main_loop_run (data.loop);
+ ret = g_dbus_connection_close_finish (connection, data.result, error);
+
+ g_object_unref (data.result);
+ g_main_loop_unref (data.loop);
+ g_main_context_pop_thread_default (context);
+ g_main_context_unref (context);
}
- CONNECTION_UNLOCK (connection);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
+/* Can be called by any thread, with the connection lock held */
static gboolean
g_dbus_connection_send_message_unlocked (GDBusConnection *connection,
GDBusMessage *message,
if (out_serial != NULL)
*out_serial = 0;
- if (connection->closed)
- {
- g_set_error_literal (error,
- G_IO_ERROR,
- G_IO_ERROR_CLOSED,
- _("The connection is closed"));
- goto out;
- }
+ /* If we're in initable_init(), don't check for being initialized, to avoid
+ * chicken-and-egg problems. initable_init() is responsible for setting up
+ * our prerequisites (mainly connection->worker), and only calling us
+ * from its own thread (so no memory barrier is needed).
+ */
+ if (!check_unclosed (connection,
+ (flags & SEND_MESSAGE_FLAGS_INITIALIZING) ? MAY_BE_UNINITIALIZED : 0,
+ error))
+ goto out;
blob = g_dbus_message_to_blob (message,
&blob_size,
if (out_serial != NULL)
*out_serial = serial_to_use;
- g_dbus_message_set_serial (message, serial_to_use);
+ if (!(flags & G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL))
+ g_dbus_message_set_serial (message, serial_to_use);
+ g_dbus_message_lock (message);
_g_dbus_worker_send_message (connection->worker,
message,
(gchar*) blob,
* @connection: A #GDBusConnection.
* @message: A #GDBusMessage
* @flags: Flags affecting how the message is sent.
- * @out_serial: Return location for serial number assigned to @message when sending it or %NULL.
+ * @out_serial: (out) (allow-none): Return location for serial number assigned
+ * to @message when sending it or %NULL.
* @error: Return location for error or %NULL.
*
* Asynchronously sends @message to the peer represented by @connection.
* linkend="gdbus-unix-fd-client"/> for an example of how to use this
* low-level API to send and receive UNIX file descriptors.
*
+ * Note that @message must be unlocked, unless @flags contain the
+ * %G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL flag.
+ *
* Returns: %TRUE if the message was well-formed and queued for
* transmission, %FALSE if @error is set.
*
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), FALSE);
g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), FALSE);
+ g_return_val_if_fail ((flags & G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL) || !g_dbus_message_get_locked (message), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
CONNECTION_LOCK (connection);
gboolean delivered;
} SendMessageData;
+/* Can be called from any thread with or without lock held */
static SendMessageData *
send_message_data_ref (SendMessageData *data)
{
return data;
}
+/* Can be called from any thread with or without lock held */
static void
send_message_data_unref (SendMessageData *data)
{
g_object_unref (data->connection);
if (data->cancellable != NULL)
g_object_unref (data->cancellable);
- if (data->main_context != NULL)
- g_main_context_unref (data->main_context);
+ g_main_context_unref (data->main_context);
g_free (data);
}
}
/* can be called from any thread with lock held - caller must have prepared GSimpleAsyncResult already */
static void
-send_message_with_reply_deliver (SendMessageData *data)
+send_message_with_reply_deliver (SendMessageData *data, gboolean remove)
{
CONNECTION_ENSURE_LOCK (data->connection);
data->cancellable_handler_id = 0;
}
- g_warn_if_fail (g_hash_table_remove (data->connection->map_method_serial_to_send_message_data,
- GUINT_TO_POINTER (data->serial)));
+ if (remove)
+ {
+ g_warn_if_fail (g_hash_table_remove (data->connection->map_method_serial_to_send_message_data,
+ GUINT_TO_POINTER (data->serial)));
+ }
send_message_data_unref (data);
}
/* ---------------------------------------------------------------------------------------------------- */
-/* must hold lock */
+/* Can be called from any thread with lock held */
static void
send_message_data_deliver_reply_unlocked (SendMessageData *data,
GDBusMessage *reply)
g_object_ref (reply),
g_object_unref);
- send_message_with_reply_deliver (data);
+ send_message_with_reply_deliver (data, TRUE);
out:
;
/* ---------------------------------------------------------------------------------------------------- */
+/* Called from a user thread, lock is not held */
static gboolean
send_message_with_reply_cancelled_idle_cb (gpointer user_data)
{
G_IO_ERROR_CANCELLED,
_("Operation was cancelled"));
- send_message_with_reply_deliver (data);
+ send_message_with_reply_deliver (data, TRUE);
out:
CONNECTION_UNLOCK (data->connection);
/* ---------------------------------------------------------------------------------------------------- */
+/* Called from a user thread, lock is not held */
static gboolean
send_message_with_reply_timeout_cb (gpointer user_data)
{
G_IO_ERROR_TIMED_OUT,
_("Timeout was reached"));
- send_message_with_reply_deliver (data);
+ send_message_with_reply_deliver (data, TRUE);
out:
CONNECTION_UNLOCK (data->connection);
/* ---------------------------------------------------------------------------------------------------- */
+/* Called from a user thread, connection's lock is held */
static void
g_dbus_connection_send_message_with_reply_unlocked (GDBusConnection *connection,
GDBusMessage *message,
goto out;
}
- if (connection->closed)
- {
- g_simple_async_result_set_error (simple,
- G_IO_ERROR,
- G_IO_ERROR_CLOSED,
- _("The connection is closed"));
- g_simple_async_result_complete_in_idle (simple);
- g_object_unref (simple);
- goto out;
- }
-
error = NULL;
if (!g_dbus_connection_send_message_unlocked (connection, message, flags, out_serial, &error))
{
- g_simple_async_result_set_from_error (simple, error);
+ g_simple_async_result_take_error (simple, error);
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
goto out;
data->connection = g_object_ref (connection);
data->simple = simple;
data->serial = *out_serial;
- data->main_context = g_main_context_get_thread_default ();
- if (data->main_context != NULL)
- g_main_context_ref (data->main_context);
+ data->main_context = g_main_context_ref_thread_default ();
if (cancellable != NULL)
{
(GDestroyNotify) g_object_unref);
}
- data->timeout_source = g_timeout_source_new (timeout_msec);
- g_source_set_priority (data->timeout_source, G_PRIORITY_DEFAULT);
- g_source_set_callback (data->timeout_source,
- send_message_with_reply_timeout_cb,
- send_message_data_ref (data),
- (GDestroyNotify) send_message_data_unref);
- g_source_attach (data->timeout_source, data->main_context);
- g_source_unref (data->timeout_source);
+ if (timeout_msec != G_MAXINT)
+ {
+ data->timeout_source = g_timeout_source_new (timeout_msec);
+ g_source_set_priority (data->timeout_source, G_PRIORITY_DEFAULT);
+ g_source_set_callback (data->timeout_source,
+ send_message_with_reply_timeout_cb,
+ send_message_data_ref (data),
+ (GDestroyNotify) send_message_data_unref);
+ g_source_attach (data->timeout_source, data->main_context);
+ g_source_unref (data->timeout_source);
+ }
g_hash_table_insert (connection->map_method_serial_to_send_message_data,
GUINT_TO_POINTER (*out_serial),
* @connection: A #GDBusConnection.
* @message: A #GDBusMessage.
* @flags: Flags affecting how the message is sent.
- * @timeout_msec: The timeout in milliseconds or -1 to use the default timeout.
- * @out_serial: Return location for serial number assigned to @message when sending it or %NULL.
+ * @timeout_msec: The timeout in milliseconds, -1 to use the default
+ * timeout or %G_MAXINT for no timeout.
+ * @out_serial: (out) (allow-none): Return location for serial number assigned
+ * to @message when sending it or %NULL.
* @cancellable: A #GCancellable or %NULL.
- * @callback: A #GAsyncReadyCallback to call when the request is satisfied or %NULL if you don't
- * care about the result.
+ * @callback: (allow-none): A #GAsyncReadyCallback to call when the request is
+ * satisfied or %NULL if you don't care about the result.
* @user_data: The data to pass to @callback.
*
* Asynchronously sends @message to the peer represented by @connection.
* g_dbus_connection_send_message_with_reply_finish() to get the result of the operation.
* See g_dbus_connection_send_message_with_reply_sync() for the synchronous version.
*
+ * Note that @message must be unlocked, unless @flags contain the
+ * %G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL flag.
+ *
* See <xref linkend="gdbus-server"/> and <xref
* linkend="gdbus-unix-fd-client"/> for an example of how to use this
* low-level API to send and receive UNIX file descriptors.
{
g_return_if_fail (G_IS_DBUS_CONNECTION (connection));
g_return_if_fail (G_IS_DBUS_MESSAGE (message));
+ g_return_if_fail ((flags & G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL) || !g_dbus_message_get_locked (message));
g_return_if_fail (timeout_msec >= 0 || timeout_msec == -1);
CONNECTION_LOCK (connection);
* Finishes an operation started with g_dbus_connection_send_message_with_reply().
*
* Note that @error is only set if a local in-process error
- * occured. That is to say that the returned #GDBusMessage object may
+ * occurred. That is to say that the returned #GDBusMessage object may
* be of type %G_DBUS_MESSAGE_TYPE_ERROR. Use
* g_dbus_message_to_gerror() to transcode this to a #GError.
*
* linkend="gdbus-unix-fd-client"/> for an example of how to use this
* low-level API to send and receive UNIX file descriptors.
*
- * Returns: A #GDBusMessage or %NULL if @error is set.
+ * Returns: (transfer full): A locked #GDBusMessage or %NULL if @error is set.
*
* Since: 2.26
*/
GMainLoop *loop;
} SendMessageSyncData;
+/* Called from a user thread, lock is not held */
static void
send_message_with_reply_sync_cb (GDBusConnection *connection,
GAsyncResult *res,
* @connection: A #GDBusConnection.
* @message: A #GDBusMessage.
* @flags: Flags affecting how the message is sent.
- * @timeout_msec: The timeout in milliseconds or -1 to use the default timeout.
- * @out_serial: Return location for serial number assigned to @message when sending it or %NULL.
+ * @timeout_msec: The timeout in milliseconds, -1 to use the default
+ * timeout or %G_MAXINT for no timeout.
+ * @out_serial: (out) (allow-none): Return location for serial number assigned
+ * to @message when sending it or %NULL.
* @cancellable: A #GCancellable or %NULL.
* @error: Return location for error or %NULL.
*
* the operation fails with %G_IO_ERROR_INVALID_ARGUMENT.
*
* Note that @error is only set if a local in-process error
- * occured. That is to say that the returned #GDBusMessage object may
+ * occurred. That is to say that the returned #GDBusMessage object may
* be of type %G_DBUS_MESSAGE_TYPE_ERROR. Use
* g_dbus_message_to_gerror() to transcode this to a #GError.
*
* linkend="gdbus-unix-fd-client"/> for an example of how to use this
* low-level API to send and receive UNIX file descriptors.
*
- * Returns: A #GDBusMessage that is the reply to @message or %NULL if @error is set.
+ * Note that @message must be unlocked, unless @flags contain the
+ * %G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL flag.
+ *
+ * Returns: (transfer full): A locked #GDBusMessage that is the reply to @message or %NULL if @error is set.
*
* Since: 2.26
*/
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), NULL);
g_return_val_if_fail (G_IS_DBUS_MESSAGE (message), NULL);
+ g_return_val_if_fail ((flags & G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL) || !g_dbus_message_get_locked (message), NULL);
g_return_val_if_fail (timeout_msec >= 0 || timeout_msec == -1, NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
GDestroyNotify user_data_free_func;
} FilterData;
-/* Called in worker's thread - we must not block */
+/* Called in GDBusWorker's thread - we must not block - with no lock held */
static void
on_worker_message_received (GDBusWorker *worker,
GDBusMessage *message,
gpointer user_data)
{
- GDBusConnection *connection = G_DBUS_CONNECTION (user_data);
+ GDBusConnection *connection;
FilterCallback *filters;
- gboolean consumed_by_filter;
guint num_filters;
guint n;
+ gboolean alive;
+
+ G_LOCK (message_bus_lock);
+ alive = (g_hash_table_lookup (alive_connections, user_data) != NULL);
+ if (!alive)
+ {
+ G_UNLOCK (message_bus_lock);
+ return;
+ }
+ connection = G_DBUS_CONNECTION (user_data);
+ g_object_ref (connection);
+ G_UNLOCK (message_bus_lock);
//g_debug ("in on_worker_message_received");
- g_object_ref (connection);
+ g_object_ref (message);
+ g_dbus_message_lock (message);
+
+ //g_debug ("boo ref_count = %d %p %p", G_OBJECT (connection)->ref_count, connection, connection->worker);
/* First collect the set of callback functions */
CONNECTION_LOCK (connection);
}
CONNECTION_UNLOCK (connection);
- /* the call the filters in order (without holding the lock) */
- consumed_by_filter = FALSE;
+ /* then call the filters in order (without holding the lock) */
for (n = 0; n < num_filters; n++)
{
- consumed_by_filter = filters[n].func (connection,
- message,
- TRUE,
- filters[n].user_data);
- if (consumed_by_filter)
+ message = filters[n].func (connection,
+ message,
+ TRUE,
+ filters[n].user_data);
+ if (message == NULL)
break;
+ g_dbus_message_lock (message);
}
- /* Standard dispatch unless the filter ate the message */
- if (!consumed_by_filter)
+ /* Standard dispatch unless the filter ate the message - no need to
+ * do anything if the message was altered
+ */
+ if (message != NULL)
{
GDBusMessageType message_type;
}
}
+ if (message != NULL)
+ g_object_unref (message);
g_object_unref (connection);
g_free (filters);
}
-/* Called in worker's thread */
-static gboolean
+/* Called in GDBusWorker's thread, lock is not held */
+static GDBusMessage *
on_worker_message_about_to_be_sent (GDBusWorker *worker,
GDBusMessage *message,
gpointer user_data)
{
- GDBusConnection *connection = G_DBUS_CONNECTION (user_data);
+ GDBusConnection *connection;
FilterCallback *filters;
- gboolean consumed_by_filter;
guint num_filters;
guint n;
+ gboolean alive;
- //g_debug ("in on_worker_message_about_to_be_sent");
-
+ G_LOCK (message_bus_lock);
+ alive = (g_hash_table_lookup (alive_connections, user_data) != NULL);
+ if (!alive)
+ {
+ G_UNLOCK (message_bus_lock);
+ return message;
+ }
+ connection = G_DBUS_CONNECTION (user_data);
g_object_ref (connection);
+ G_UNLOCK (message_bus_lock);
+
+ //g_debug ("in on_worker_message_about_to_be_sent");
/* First collect the set of callback functions */
CONNECTION_LOCK (connection);
}
CONNECTION_UNLOCK (connection);
- /* the call the filters in order (without holding the lock) */
- consumed_by_filter = FALSE;
+ /* then call the filters in order (without holding the lock) */
for (n = 0; n < num_filters; n++)
{
- consumed_by_filter = filters[n].func (connection,
- message,
- FALSE,
- filters[n].user_data);
- if (consumed_by_filter)
+ g_dbus_message_lock (message);
+ message = filters[n].func (connection,
+ message,
+ FALSE,
+ filters[n].user_data);
+ if (message == NULL)
break;
}
g_object_unref (connection);
g_free (filters);
- return consumed_by_filter;
+ return message;
+}
+
+/* called with connection lock held, in GDBusWorker thread */
+static gboolean
+cancel_method_on_close (gpointer key, gpointer value, gpointer user_data)
+{
+ SendMessageData *data = value;
+
+ if (data->delivered)
+ return FALSE;
+
+ g_simple_async_result_set_error (data->simple,
+ G_IO_ERROR,
+ G_IO_ERROR_CLOSED,
+ _("The connection is closed"));
+
+ /* Ask send_message_with_reply_deliver not to remove the element from the
+ * hash table - we're in the middle of a foreach; that would be unsafe.
+ * Instead, return TRUE from this function so that it gets removed safely.
+ */
+ send_message_with_reply_deliver (data, FALSE);
+ return TRUE;
}
-/* Called in worker's thread - we must not block */
+/* Called in GDBusWorker's thread - we must not block - without lock held */
static void
on_worker_closed (GDBusWorker *worker,
gboolean remote_peer_vanished,
GError *error,
gpointer user_data)
{
- GDBusConnection *connection = G_DBUS_CONNECTION (user_data);
+ GDBusConnection *connection;
+ gboolean alive;
+ guint old_atomic_flags;
+
+ G_LOCK (message_bus_lock);
+ alive = (g_hash_table_lookup (alive_connections, user_data) != NULL);
+ if (!alive)
+ {
+ G_UNLOCK (message_bus_lock);
+ return;
+ }
+ connection = G_DBUS_CONNECTION (user_data);
+ g_object_ref (connection);
+ G_UNLOCK (message_bus_lock);
//g_debug ("in on_worker_closed: %s", error->message);
CONNECTION_LOCK (connection);
- if (!connection->closed)
- set_closed_unlocked (connection, remote_peer_vanished, error);
- CONNECTION_UNLOCK (connection);
-}
+ /* Even though this is atomic, we do it inside the lock to avoid breaking
+ * assumptions in remove_match_rule(). We'd need the lock in a moment
+ * anyway, so, no loss.
+ */
+ old_atomic_flags = g_atomic_int_or (&connection->atomic_flags, FLAG_CLOSED);
+
+ if (!(old_atomic_flags & FLAG_CLOSED))
+ {
+ g_hash_table_foreach_remove (connection->map_method_serial_to_send_message_data, cancel_method_on_close, NULL);
+ schedule_closed_unlocked (connection, remote_peer_vanished, error);
+ }
+ CONNECTION_UNLOCK (connection);
+
+ g_object_unref (connection);
+}
/* ---------------------------------------------------------------------------------------------------- */
-/* Determines the biggest set of capabilities we can support on this connection */
+/* Determines the biggest set of capabilities we can support on this
+ * connection.
+ *
+ * Called with the init_lock held.
+ */
static GDBusCapabilityFlags
get_offered_capabilities_max (GDBusConnection *connection)
{
return ret;
}
+/* Called in a user thread, lock is not held */
static gboolean
initable_init (GInitable *initable,
GCancellable *cancellable,
* callbacks above needs the lock during initialization (for message
* bus connections we do a synchronous Hello() call on the bus).
*/
- g_mutex_lock (connection->init_lock);
+ g_mutex_lock (&connection->init_lock);
ret = FALSE;
- if (connection->is_initialized)
+ /* Make this a no-op if we're already initialized (successfully or
+ * unsuccessfully)
+ */
+ if ((g_atomic_int_get (&connection->atomic_flags) & FLAG_INITIALIZED))
{
- if (connection->stream != NULL)
- ret = TRUE;
- else
- g_assert (connection->initialization_error != NULL);
+ ret = (connection->initialization_error == NULL);
goto out;
}
+
+ /* Because of init_lock, we can't get here twice in different threads */
g_assert (connection->initialization_error == NULL);
/* The user can pass multiple (but mutally exclusive) construct
(connection->flags & G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_ALLOW_ANONYMOUS),
get_offered_capabilities_max (connection),
&connection->capabilities,
- &connection->crendentials,
+ &connection->credentials,
cancellable,
&connection->initialization_error))
goto out;
//g_debug ("haz unix fd passing powers: %d", connection->capabilities & G_DBUS_CAPABILITY_FLAGS_UNIX_FD_PASSING);
#ifdef G_OS_UNIX
- /* Hack used until
- *
- * https://bugzilla.gnome.org/show_bug.cgi?id=616458
- *
- * has been resolved
+ /* We want all IO operations to be non-blocking since they happen in
+ * the worker thread which is shared by _all_ connections.
*/
if (G_IS_SOCKET_CONNECTION (connection->stream))
{
}
#endif
+ G_LOCK (message_bus_lock);
+ if (alive_connections == NULL)
+ alive_connections = g_hash_table_new (g_direct_hash, g_direct_equal);
+ g_hash_table_insert (alive_connections, connection, connection);
+ G_UNLOCK (message_bus_lock);
+
connection->worker = _g_dbus_worker_new (connection->stream,
connection->capabilities,
(connection->flags & G_DBUS_CONNECTION_FLAGS_DELAY_MESSAGE_PROCESSING),
"Hello",
NULL, /* parameters */
G_VARIANT_TYPE ("(s)"),
- G_DBUS_CALL_FLAGS_NONE,
+ CALL_FLAGS_INITIALIZING,
-1,
NULL, /* TODO: cancellable */
&connection->initialization_error);
//g_debug ("unique name is `%s'", connection->bus_unique_name);
}
- connection->is_initialized = TRUE;
-
ret = TRUE;
out:
if (!ret)
g_propagate_error (error, g_error_copy (connection->initialization_error));
}
- g_mutex_unlock (connection->init_lock);
+ g_atomic_int_or (&connection->atomic_flags, FLAG_INITIALIZED);
+ g_mutex_unlock (&connection->init_lock);
return ret;
}
/**
* g_dbus_connection_new:
* @stream: A #GIOStream.
- * @guid: The GUID to use if a authenticating as a server or %NULL.
+ * @guid: (allow-none): The GUID to use if a authenticating as a server or %NULL.
* @flags: Flags describing how to make the connection.
- * @observer: A #GDBusAuthObserver or %NULL.
+ * @observer: (allow-none): A #GDBusAuthObserver or %NULL.
* @cancellable: A #GCancellable or %NULL.
* @callback: A #GAsyncReadyCallback to call when the request is satisfied.
* @user_data: The data to pass to @callback.
* Asynchronously sets up a D-Bus connection for exchanging D-Bus messages
* with the end represented by @stream.
*
+ * If @stream is a #GSocketConnection, then the corresponding #GSocket
+ * will be put into non-blocking mode.
+ *
+ * The D-Bus connection will interact with @stream from a worker thread.
+ * As a result, the caller should not interact with @stream after this
+ * method has been called, except by calling g_object_unref() on it.
+ *
* If @observer is not %NULL it may be used to control the
* authentication process.
*
/**
* g_dbus_connection_new_sync:
* @stream: A #GIOStream.
- * @guid: The GUID to use if a authenticating as a server or %NULL.
+ * @guid: (allow-none): The GUID to use if a authenticating as a server or %NULL.
* @flags: Flags describing how to make the connection.
- * @observer: A #GDBusAuthObserver or %NULL.
+ * @observer: (allow-none): A #GDBusAuthObserver or %NULL.
* @cancellable: A #GCancellable or %NULL.
* @error: Return location for error or %NULL.
*
* Synchronously sets up a D-Bus connection for exchanging D-Bus messages
* with the end represented by @stream.
*
+ * If @stream is a #GSocketConnection, then the corresponding #GSocket
+ * will be put into non-blocking mode.
+ *
+ * The D-Bus connection will interact with @stream from a worker thread.
+ * As a result, the caller should not interact with @stream after this
+ * method has been called, except by calling g_object_unref() on it.
+ *
* If @observer is not %NULL it may be used to control the
* authentication process.
*
* g_dbus_connection_new_for_address:
* @address: A D-Bus address.
* @flags: Flags describing how to make the connection.
- * @observer: A #GDBusAuthObserver or %NULL.
+ * @observer: (allow-none): A #GDBusAuthObserver or %NULL.
* @cancellable: A #GCancellable or %NULL.
* @callback: A #GAsyncReadyCallback to call when the request is satisfied.
* @user_data: The data to pass to @callback.
* g_dbus_connection_new_for_address_sync:
* @address: A D-Bus address.
* @flags: Flags describing how to make the connection.
- * @observer: A #GDBusAuthObserver or %NULL.
+ * @observer: (allow-none): A #GDBusAuthObserver or %NULL.
* @cancellable: A #GCancellable or %NULL.
* @error: Return location for error or %NULL.
*
* g_dbus_connection_set_exit_on_close:
* @connection: A #GDBusConnection.
* @exit_on_close: Whether the process should be terminated
- * when @connection is closed by the remote peer.
+ * when @connection is closed by the remote peer.
*
* Sets whether the process should be terminated when @connection is
* closed by the remote peer. See #GDBusConnection:exit-on-close for
* more details.
*
+ * Note that this function should be used with care. Most modern UNIX
+ * desktops tie the notion of a user session the session bus, and expect
+ * all of a users applications to quit when their bus connection goes away.
+ * If you are setting @exit_on_close to %FALSE for the shared session
+ * bus connection, you should make sure that your application exits
+ * when the user session ends.
+ *
* Since: 2.26
*/
void
gboolean exit_on_close)
{
g_return_if_fail (G_IS_DBUS_CONNECTION (connection));
- connection->exit_on_close = exit_on_close;
+
+ if (exit_on_close)
+ g_atomic_int_or (&connection->atomic_flags, FLAG_EXIT_ON_CLOSE);
+ else
+ g_atomic_int_and (&connection->atomic_flags, ~FLAG_EXIT_ON_CLOSE);
+
}
/**
g_dbus_connection_get_exit_on_close (GDBusConnection *connection)
{
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), FALSE);
- return connection->exit_on_close;
+
+ if (g_atomic_int_get (&connection->atomic_flags) & FLAG_EXIT_ON_CLOSE)
+ return TRUE;
+ else
+ return FALSE;
}
/**
g_dbus_connection_get_unique_name (GDBusConnection *connection)
{
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), NULL);
+
+ /* do not use g_return_val_if_fail(), we want the memory barrier */
+ if (!check_initialized (connection))
+ return NULL;
+
return connection->bus_unique_name;
}
* each application is a client. So this method will always return
* %NULL for message bus clients.
*
- * Returns: A #GCredentials or %NULL if not available. Do not free
+ * Returns: (transfer none): A #GCredentials or %NULL if not available. Do not free
* this object, it is owned by @connection.
*
* Since: 2.26
g_dbus_connection_get_peer_credentials (GDBusConnection *connection)
{
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), NULL);
- return connection->crendentials;
+
+ /* do not use g_return_val_if_fail(), we want the memory barrier */
+ if (!check_initialized (connection))
+ return NULL;
+
+ return connection->credentials;
}
/* ---------------------------------------------------------------------------------------------------- */
* are run in the order that they were added. The same handler can be
* added as a filter more than once, in which case it will be run more
* than once. Filters added during a filter callback won't be run on
- * the message being processed.
+ * the message being processed. Filter functions are allowed to modify
+ * and even drop messages.
*
* Note that filters are run in a dedicated message handling thread so
* they can't block and, generally, can't do anything but signal a
* worker thread. Also note that filters are rarely needed - use API
* such as g_dbus_connection_send_message_with_reply(),
- * g_dbus_connection_signal_subscribe() or
- * g_dbus_connection_call() instead.
+ * g_dbus_connection_signal_subscribe() or g_dbus_connection_call() instead.
*
- * If a filter consumes an incoming message (by returning %TRUE), the
- * message is not dispatched anywhere else - not even the standard
- * dispatch machinery (that API such as
- * g_dbus_connection_signal_subscribe() and
+ * If a filter consumes an incoming message the message is not
+ * dispatched anywhere else - not even the standard dispatch machinery
+ * (that API such as g_dbus_connection_signal_subscribe() and
* g_dbus_connection_send_message_with_reply() relies on) will see the
* message. Similary, if a filter consumes an outgoing message, the
* message will not be sent to the other peer.
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), 0);
g_return_val_if_fail (filter_function != NULL, 0);
+ g_return_val_if_fail (check_initialized (connection), 0);
CONNECTION_LOCK (connection);
data = g_new0 (FilterData, 1);
FilterData *to_destroy;
g_return_if_fail (G_IS_DBUS_CONNECTION (connection));
+ g_return_if_fail (check_initialized (connection));
CONNECTION_LOCK (connection);
to_destroy = NULL;
const gchar *interface_name,
const gchar *member,
const gchar *object_path,
- const gchar *arg0)
+ const gchar *arg0,
+ gboolean negate)
{
GString *rule;
rule = g_string_new ("type='signal'");
+ if (negate)
+ g_string_prepend_c (rule, '-');
if (sender != NULL)
g_string_append_printf (rule, ",sender='%s'", sender);
if (interface_name != NULL)
/* ---------------------------------------------------------------------------------------------------- */
-/* must hold lock when calling */
+/* Called in a user thread, lock is held */
static void
add_match_rule (GDBusConnection *connection,
const gchar *match_rule)
GError *error;
GDBusMessage *message;
+ if (match_rule[0] == '-')
+ return;
+
message = g_dbus_message_new_method_call ("org.freedesktop.DBus", /* name */
"/org/freedesktop/DBus", /* path */
"org.freedesktop.DBus", /* interface */
/* ---------------------------------------------------------------------------------------------------- */
-/* must hold lock when calling */
+/* Called in a user thread, lock is held */
static void
remove_match_rule (GDBusConnection *connection,
const gchar *match_rule)
GError *error;
GDBusMessage *message;
+ if (match_rule[0] == '-')
+ return;
+
message = g_dbus_message_new_method_call ("org.freedesktop.DBus", /* name */
"/org/freedesktop/DBus", /* path */
"org.freedesktop.DBus", /* interface */
NULL,
&error))
{
+ /* If we could get G_IO_ERROR_CLOSED here, it wouldn't be reasonable to
+ * critical; but we're holding the lock, and our caller checked whether
+ * we were already closed, so we can't get that error.
+ */
g_critical ("Error while sending RemoveMatch() message: %s", error->message);
g_error_free (error);
}
/**
* g_dbus_connection_signal_subscribe:
* @connection: A #GDBusConnection.
- * @sender: Sender name to match on (unique or well-known name) or %NULL to listen from all senders.
- * @interface_name: D-Bus interface name to match on or %NULL to match on all interfaces.
- * @member: D-Bus signal name to match on or %NULL to match on all signals.
- * @object_path: Object path to match on or %NULL to match on all object paths.
- * @arg0: Contents of first string argument to match on or %NULL to match on all kinds of arguments.
+ * @sender: (allow-none): Sender name to match on (unique or well-known name)
+ * or %NULL to listen from all senders.
+ * @interface_name: (allow-none): D-Bus interface name to match on or %NULL to
+ * match on all interfaces.
+ * @member: (allow-none): D-Bus signal name to match on or %NULL to match on all signals.
+ * @object_path: (allow-none): Object path to match on or %NULL to match on all object paths.
+ * @arg0: (allow-none): Contents of first string argument to match on or %NULL
+ * to match on all kinds of arguments.
* @flags: Flags describing how to subscribe to the signal (currently unused).
* @callback: Callback to invoke when there is a signal matching the requested data.
* @user_data: User data to pass to @callback.
- * @user_data_free_func: Function to free @user_data with when subscription is removed or %NULL.
+ * @user_data_free_func: (allow-none): Function to free @user_data with when
+ * subscription is removed or %NULL.
*
* Subscribes to signals on @connection and invokes @callback with a
* whenever the signal is received. Note that @callback
g_return_val_if_fail (member == NULL || g_dbus_is_member_name (member), 0);
g_return_val_if_fail (object_path == NULL || g_variant_is_object_path (object_path), 0);
g_return_val_if_fail (callback != NULL, 0);
+ g_return_val_if_fail (check_initialized (connection), 0);
CONNECTION_LOCK (connection);
- rule = args_to_rule (sender, interface_name, member, object_path, arg0);
+ /* If G_DBUS_SIGNAL_FLAGS_NO_MATCH_RULE was specified, we will end up
+ * with a '-' character to prefix the rule (which will otherwise be
+ * normal).
+ *
+ * This allows us to hash the rule and do our lifecycle tracking in
+ * the usual way, but the '-' prevents the match rule from ever
+ * actually being send to the bus (either for add or remove).
+ */
+ rule = args_to_rule (sender, interface_name, member, object_path, arg0,
+ (flags & G_DBUS_SIGNAL_FLAGS_NO_MATCH_RULE) != 0);
if (sender != NULL && (g_dbus_is_unique_name (sender) || g_strcmp0 (sender, "org.freedesktop.DBus") == 0))
sender_unique_name = sender;
subscriber.user_data = user_data;
subscriber.user_data_free_func = user_data_free_func;
subscriber.id = _global_subscriber_id++; /* TODO: overflow etc. */
- subscriber.context = g_main_context_get_thread_default ();
- if (subscriber.context != NULL)
- g_main_context_ref (subscriber.context);
+ subscriber.context = g_main_context_ref_thread_default ();
/* see if we've already have this rule */
signal_data = g_hash_table_lookup (connection->map_rule_to_signal_data, rule);
/* ---------------------------------------------------------------------------------------------------- */
+/* called in any thread */
/* must hold lock when calling this (except if connection->finalizing is TRUE) */
static void
unsubscribe_id_internal (GDBusConnection *connection,
}
/* remove the match rule from the bus unless NameLost or NameAcquired (see subscribe()) */
- if (connection->flags & G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION)
+ if ((connection->flags & G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION) &&
+ !is_signal_data_for_name_lost_or_acquired (signal_data) &&
+ !g_dbus_connection_is_closed (connection) &&
+ !connection->finalizing)
{
- if (!is_signal_data_for_name_lost_or_acquired (signal_data))
- if (!connection->closed && !connection->finalizing)
- remove_match_rule (connection, signal_data->rule);
+ /* The check for g_dbus_connection_is_closed() means that
+ * sending the RemoveMatch message can't fail with
+ * G_IO_ERROR_CLOSED, because we're holding the lock,
+ * so on_worker_closed() can't happen between the check we just
+ * did, and releasing the lock later.
+ */
+ remove_match_rule (connection, signal_data->rule);
}
+
signal_data_free (signal_data);
}
guint n;
g_return_if_fail (G_IS_DBUS_CONNECTION (connection));
+ g_return_if_fail (check_initialized (connection));
subscribers = g_array_new (FALSE, FALSE, sizeof (SignalSubscriber));
{
SignalSubscriber *subscriber;
subscriber = &(g_array_index (subscribers, SignalSubscriber, n));
- if (subscriber->user_data_free_func != NULL)
- subscriber->user_data_free_func (subscriber->user_data);
- if (subscriber->context != NULL)
- g_main_context_unref (subscriber->context);
+ call_destroy_notify (subscriber->context,
+ subscriber->user_data_free_func,
+ subscriber->user_data);
+ g_main_context_unref (subscriber->context);
}
g_array_free (subscribers, TRUE);
parameters,
signal_instance->user_data);
- if (parameters != NULL)
- g_variant_unref (parameters);
+ g_variant_unref (parameters);
return FALSE;
}
g_free (signal_instance);
}
-/* called in message handler thread WITH lock held */
+/* called in GDBusWorker thread WITH lock held */
static void
schedule_callbacks (GDBusConnection *connection,
GPtrArray *signal_data_array,
}
}
-/* called in message handler thread with lock held */
+/* called in GDBusWorker thread with lock held */
static void
distribute_signals (GDBusConnection *connection,
GDBusMessage *message)
_g_dbus_debug_print_lock ();
g_print ("========================================================================\n"
"GDBus-debug:Signal:\n"
- " >>>> SIGNAL %s.%s\n"
+ " <<<< RECEIVED SIGNAL %s.%s\n"
" on object %s\n"
" sent by name %s\n",
g_dbus_message_get_interface (message),
{
SignalSubscriber *subscriber;
subscriber = &(g_array_index (subscribers, SignalSubscriber, n));
- if (subscriber->user_data_free_func != NULL)
- subscriber->user_data_free_func (subscriber->user_data);
- if (subscriber->context != NULL)
- g_main_context_unref (subscriber->context);
+ call_destroy_notify (subscriber->context,
+ subscriber->user_data_free_func,
+ subscriber->user_data);
+ g_main_context_unref (subscriber->context);
}
g_array_free (subscribers, TRUE);
static void
exported_interface_free (ExportedInterface *ei)
{
+ g_dbus_interface_info_cache_release (ei->interface_info);
g_dbus_interface_info_unref ((GDBusInterfaceInfo *) ei->interface_info);
- if (ei->user_data_free_func != NULL)
- /* TODO: push to thread-default mainloop */
- ei->user_data_free_func (ei->user_data);
+ call_destroy_notify (ei->context,
+ ei->user_data_free_func,
+ ei->user_data);
- if (ei->context != NULL)
- g_main_context_unref (ei->context);
+ g_main_context_unref (ei->context);
g_free (ei->interface_name);
_g_dbus_interface_vtable_free (ei->vtable);
* @subtree_registration_id (if not zero) has been unregistered. If
* so, returns %TRUE.
*
- * Caller must *not* hold lock.
+ * May be called by any thread. Caller must *not* hold lock.
*/
static gboolean
has_object_been_unregistered (GDBusConnection *connection,
{
g_assert_no_error (error);
- g_variant_ref_sink (value);
+ g_variant_take_ref (value);
reply = g_dbus_message_new_method_reply (data->message);
g_dbus_message_set_body (reply, g_variant_new ("(v)", value));
g_dbus_connection_send_message (data->connection, reply, G_DBUS_SEND_MESSAGE_FLAGS_NONE, NULL, NULL);
g_assert (reply != NULL);
g_dbus_connection_send_message (data->connection, reply, G_DBUS_SEND_MESSAGE_FLAGS_NONE, NULL, NULL);
g_object_unref (reply);
+ g_variant_unref (value);
return FALSE;
}
-/* called with lock held */
+/* called in any thread with connection's lock held */
static gboolean
validate_and_maybe_schedule_property_getset (GDBusConnection *connection,
GDBusMessage *message,
return handled;
}
-/* called with lock held */
+/* called in GDBusWorker thread with connection's lock held */
static gboolean
handle_getset_property (GDBusConnection *connection,
ExportedObject *eo,
{
PropertyGetAllData *data = _data;
GVariantBuilder builder;
- GError *error;
GDBusMessage *reply;
guint n;
goto out;
}
- error = NULL;
-
/* TODO: Right now we never fail this call - we just omit values if
* a get_property() call is failing.
*
if (value == NULL)
continue;
+ g_variant_take_ref (value);
g_variant_builder_add (&builder,
"{sv}",
property_info->name,
value);
+ g_variant_unref (value);
}
g_variant_builder_close (&builder);
return FALSE;
}
-/* called with lock held */
+/* called in any thread with connection's lock held */
static gboolean
validate_and_maybe_schedule_property_get_all (GDBusConnection *connection,
GDBusMessage *message,
return handled;
}
-/* called with lock held */
+/* called in GDBusWorker thread with connection's lock held */
static gboolean
handle_get_all_properties (GDBusConnection *connection,
ExportedObject *eo,
static const gchar introspect_tail[] =
"</node>\n";
-static const gchar introspect_standard_interfaces[] =
+static const gchar introspect_properties_interface[] =
" <interface name=\"org.freedesktop.DBus.Properties\">\n"
" <method name=\"Get\">\n"
" <arg type=\"s\" name=\"interface_name\" direction=\"in\"/>\n"
" <arg type=\"a{sv}\" name=\"changed_properties\"/>\n"
" <arg type=\"as\" name=\"invalidated_properties\"/>\n"
" </signal>\n"
- " </interface>\n"
+ " </interface>\n";
+
+static const gchar introspect_introspectable_interface[] =
" <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
" <method name=\"Introspect\">\n"
" <arg type=\"s\" name=\"xml_data\" direction=\"out\"/>\n"
}
static void
-introspect_append_standard_interfaces (GString *s)
-{
- g_string_append (s, introspect_standard_interfaces);
-}
-
-static void
maybe_add_path (const gchar *path, gsize path_len, const gchar *object_path, GHashTable *set)
{
if (g_str_has_prefix (object_path, path) && strlen (object_path) > path_len && object_path[path_len-1] == '/')
}
/* TODO: we want a nicer public interface for this */
+/* called in any thread with connection's lock held */
static gchar **
g_dbus_connection_list_registered_unlocked (GDBusConnection *connection,
const gchar *path)
return ret;
}
+/* called in any thread with connection's lock not held */
static gchar **
g_dbus_connection_list_registered (GDBusConnection *connection,
const gchar *path)
return ret;
}
-/* called in message handler thread with lock held */
+/* called in GDBusWorker thread with connection's lock held */
static gboolean
handle_introspect (GDBusConnection *connection,
ExportedObject *eo,
/* first the header with the standard interfaces */
s = g_string_sized_new (sizeof (introspect_header) +
- sizeof (introspect_standard_interfaces) +
+ sizeof (introspect_properties_interface) +
+ sizeof (introspect_introspectable_interface) +
sizeof (introspect_tail));
introspect_append_header (s);
- introspect_append_standard_interfaces (s);
+ if (!g_hash_table_lookup (eo->map_if_name_to_ei,
+ "org.freedesktop.DBus.Properties"))
+ g_string_append (s, introspect_properties_interface);
+
+ if (!g_hash_table_lookup (eo->map_if_name_to_ei,
+ "org.freedesktop.DBus.Introspectable"))
+ g_string_append (s, introspect_introspectable_interface);
/* then include the registered interfaces */
g_hash_table_iter_init (&hash_iter, eo->map_if_name_to_ei);
return FALSE;
}
-/* called in message handler thread with lock held */
+/* called in GDBusWorker thread with connection's lock held */
static gboolean
validate_and_maybe_schedule_method_call (GDBusConnection *connection,
GDBusMessage *message,
g_variant_type_free (in_type);
/* schedule the call in idle */
- invocation = g_dbus_method_invocation_new (g_dbus_message_get_sender (message),
- g_dbus_message_get_path (message),
- g_dbus_message_get_interface (message),
- g_dbus_message_get_member (message),
- method_info,
- connection,
- message,
- parameters,
- user_data);
+ invocation = _g_dbus_method_invocation_new (g_dbus_message_get_sender (message),
+ g_dbus_message_get_path (message),
+ g_dbus_message_get_interface (message),
+ g_dbus_message_get_member (message),
+ method_info,
+ connection,
+ message,
+ parameters,
+ user_data);
g_variant_unref (parameters);
/* TODO: would be nicer with a real MethodData like we already
/* ---------------------------------------------------------------------------------------------------- */
-/* called in message handler thread with lock held */
+/* called in GDBusWorker thread with connection's lock held */
static gboolean
obj_message_func (GDBusConnection *connection,
ExportedObject *eo,
* @connection: A #GDBusConnection.
* @object_path: The object path to register at.
* @interface_info: Introspection data for the interface.
- * @vtable: A #GDBusInterfaceVTable to call into or %NULL.
- * @user_data: Data to pass to functions in @vtable.
+ * @vtable: (allow-none): A #GDBusInterfaceVTable to call into or %NULL.
+ * @user_data: (allow-none): Data to pass to functions in @vtable.
* @user_data_free_func: Function to call when the object path is unregistered.
* @error: Return location for error or %NULL.
*
g_return_val_if_fail (interface_info != NULL, 0);
g_return_val_if_fail (g_dbus_is_interface_name (interface_info->name), 0);
g_return_val_if_fail (error == NULL || *error == NULL, 0);
+ g_return_val_if_fail (check_initialized (connection), 0);
ret = 0;
ei->user_data_free_func = user_data_free_func;
ei->vtable = _g_dbus_interface_vtable_copy (vtable);
ei->interface_info = g_dbus_interface_info_ref (interface_info);
+ g_dbus_interface_info_cache_build (ei->interface_info);
ei->interface_name = g_strdup (interface_info->name);
- ei->context = g_main_context_get_thread_default ();
- if (ei->context != NULL)
- g_main_context_ref (ei->context);
+ ei->context = g_main_context_ref_thread_default ();
g_hash_table_insert (eo->map_if_name_to_ei,
(gpointer) ei->interface_name,
gboolean ret;
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), FALSE);
+ g_return_val_if_fail (check_initialized (connection), FALSE);
ret = FALSE;
/**
* g_dbus_connection_emit_signal:
* @connection: A #GDBusConnection.
- * @destination_bus_name: The unique bus name for the destination for the signal or %NULL to emit to all listeners.
+ * @destination_bus_name: (allow-none): The unique bus name for the destination
+ * for the signal or %NULL to emit to all listeners.
* @object_path: Path of remote object.
* @interface_name: D-Bus interface to emit a signal on.
* @signal_name: The name of the signal to emit.
- * @parameters: A #GVariant tuple with parameters for the signal or %NULL if not passing parameters.
+ * @parameters: (allow-none): A #GVariant tuple with parameters for the signal
+ * or %NULL if not passing parameters.
* @error: Return location for error or %NULL.
*
* Emits a signal.
g_return_val_if_fail (interface_name != NULL && g_dbus_is_interface_name (interface_name), FALSE);
g_return_val_if_fail (signal_name != NULL && g_dbus_is_member_name (signal_name), FALSE);
g_return_val_if_fail (parameters == NULL || g_variant_is_of_type (parameters, G_VARIANT_TYPE_TUPLE), FALSE);
+ g_return_val_if_fail (check_initialized (connection), FALSE);
if (G_UNLIKELY (_g_dbus_debug_emission ()))
{
decode_method_reply (GDBusMessage *reply,
const gchar *method_name,
const GVariantType *reply_type,
+ GUnixFDList **out_fd_list,
GError **error)
{
GVariant *result;
g_free (type_string);
result = NULL;
}
+
+#ifdef G_OS_UNIX
+ if (result != NULL)
+ {
+ if (out_fd_list != NULL)
+ {
+ *out_fd_list = g_dbus_message_get_unix_fd_list (reply);
+ if (*out_fd_list != NULL)
+ g_object_ref (*out_fd_list);
+ }
+ }
+#endif
break;
case G_DBUS_MESSAGE_TYPE_ERROR:
GVariantType *reply_type;
gchar *method_name; /* for error message */
guint32 serial;
+
+ GVariant *value;
+ GUnixFDList *fd_list;
} CallState;
static void
+call_state_free (CallState *state)
+{
+ g_variant_type_free (state->reply_type);
+ g_free (state->method_name);
+
+ if (state->value != NULL)
+ g_variant_unref (state->value);
+ if (state->fd_list != NULL)
+ g_object_unref (state->fd_list);
+ g_slice_free (CallState, state);
+}
+
+/* called in any thread, with the connection's lock not held */
+static void
g_dbus_connection_call_done (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
+ GSimpleAsyncResult *simple;
GDBusConnection *connection = G_DBUS_CONNECTION (source);
CallState *state = user_data;
GError *error;
GDBusMessage *reply;
- GVariant *value;
error = NULL;
reply = g_dbus_connection_send_message_with_reply_finish (connection,
_g_dbus_debug_print_unlock ();
}
-
if (reply != NULL)
+ state->value = decode_method_reply (reply, state->method_name, state->reply_type, &state->fd_list, &error);
+
+ simple = state->simple; /* why? because state is freed before we unref simple.. */
+ if (error != NULL)
{
- value = decode_method_reply (reply, state->method_name,
- state->reply_type, &error);
- g_object_unref (reply);
+ g_simple_async_result_take_error (state->simple, error);
+ g_simple_async_result_complete (state->simple);
+ call_state_free (state);
}
else
- value = NULL;
-
- if (value == NULL)
{
- g_simple_async_result_set_from_error (state->simple, error);
- g_error_free (error);
+ g_simple_async_result_set_op_res_gpointer (state->simple, state, (GDestroyNotify) call_state_free);
+ g_simple_async_result_complete (state->simple);
+ g_object_unref (reply);
}
- else
- g_simple_async_result_set_op_res_gpointer (state->simple, value,
- (GDestroyNotify) g_variant_unref);
-
- g_simple_async_result_complete (state->simple);
- g_variant_type_free (state->reply_type);
- g_object_unref (state->simple);
- g_free (state->method_name);
-
- g_slice_free (CallState, state);
+ g_object_unref (simple);
}
-/**
- * g_dbus_connection_call:
- * @connection: A #GDBusConnection.
- * @bus_name: A unique or well-known bus name or %NULL if @connection is not a message bus connection.
- * @object_path: Path of remote object.
- * @interface_name: D-Bus interface to invoke method on.
- * @method_name: The name of the method to invoke.
- * @parameters: A #GVariant tuple with parameters for the method or %NULL if not passing parameters.
- * @reply_type: The expected type of the reply, or %NULL.
- * @flags: Flags from the #GDBusCallFlags enumeration.
- * @timeout_msec: The timeout in milliseconds or -1 to use the default timeout.
- * @cancellable: A #GCancellable or %NULL.
- * @callback: A #GAsyncReadyCallback to call when the request is satisfied or %NULL if you don't
- * care about the result of the method invocation.
- * @user_data: The data to pass to @callback.
- *
- * Asynchronously invokes the @method_name method on the
- * @interface_name D-Bus interface on the remote object at
- * @object_path owned by @bus_name.
- *
- * If @connection is closed then the operation will fail with
- * %G_IO_ERROR_CLOSED. If @cancellable is canceled, the operation will
- * fail with %G_IO_ERROR_CANCELLED. If @parameters contains a value
- * not compatible with the D-Bus protocol, the operation fails with
- * %G_IO_ERROR_INVALID_ARGUMENT.
- *
- * If @reply_type is non-%NULL then the reply will be checked for having this type and an
- * error will be raised if it does not match. Said another way, if you give a @reply_type
- * then any non-%NULL return value will be of this type.
- *
- * If the @parameters #GVariant is floating, it is consumed. This allows
- * convenient 'inline' use of g_variant_new(), e.g.:
- * |[
- * g_dbus_connection_call (connection,
- * "org.freedesktop.StringThings",
- * "/org/freedesktop/StringThings",
- * "org.freedesktop.StringThings",
- * "TwoStrings",
- * g_variant_new ("(ss)",
- * "Thing One",
- * "Thing Two"),
- * NULL,
- * G_DBUS_CALL_FLAGS_NONE,
- * -1,
- * NULL,
- * (GAsyncReadyCallback) two_strings_done,
- * NULL);
- * ]|
- *
- * This is an asynchronous method. When the operation is finished, @callback will be invoked
- * in the <link linkend="g-main-context-push-thread-default">thread-default main loop</link>
- * of the thread you are calling this method from. You can then call
- * g_dbus_connection_call_finish() to get the result of the operation.
- * See g_dbus_connection_call_sync() for the synchronous version of this
- * function.
- *
- * Since: 2.26
- */
-void
-g_dbus_connection_call (GDBusConnection *connection,
- const gchar *bus_name,
- const gchar *object_path,
- const gchar *interface_name,
- const gchar *method_name,
- GVariant *parameters,
- const GVariantType *reply_type,
- GDBusCallFlags flags,
- gint timeout_msec,
- GCancellable *cancellable,
- GAsyncReadyCallback callback,
- gpointer user_data)
+/* called in any thread, with the connection's lock not held */
+static void
+g_dbus_connection_call_internal (GDBusConnection *connection,
+ const gchar *bus_name,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *method_name,
+ GVariant *parameters,
+ const GVariantType *reply_type,
+ GDBusCallFlags flags,
+ gint timeout_msec,
+ GUnixFDList *fd_list,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
{
GDBusMessage *message;
CallState *state;
g_return_if_fail (method_name != NULL && g_dbus_is_member_name (method_name));
g_return_if_fail (timeout_msec >= 0 || timeout_msec == -1);
g_return_if_fail ((parameters == NULL) || g_variant_is_of_type (parameters, G_VARIANT_TYPE_TUPLE));
+ g_return_if_fail (check_initialized (connection));
+#ifdef G_OS_UNIX
+ g_return_if_fail (fd_list == NULL || G_IS_UNIX_FD_LIST (fd_list));
+#else
+ g_return_if_fail (fd_list == NULL);
+#endif
- state = g_slice_new (CallState);
+ state = g_slice_new0 (CallState);
state->simple = g_simple_async_result_new (G_OBJECT (connection),
callback, user_data,
- g_dbus_connection_call);
+ g_dbus_connection_call_internal);
state->method_name = g_strjoin (".", interface_name, method_name, NULL);
if (reply_type == NULL)
if (parameters != NULL)
g_dbus_message_set_body (message, parameters);
+#ifdef G_OS_UNIX
+ if (fd_list != NULL)
+ g_dbus_message_set_unix_fd_list (message, fd_list);
+#endif
+
g_dbus_connection_send_message_with_reply (connection,
message,
G_DBUS_SEND_MESSAGE_FLAGS_NONE,
g_object_unref (message);
}
-/**
- * g_dbus_connection_call_finish:
- * @connection: A #GDBusConnection.
- * @res: A #GAsyncResult obtained from the #GAsyncReadyCallback passed to g_dbus_connection_call().
- * @error: Return location for error or %NULL.
- *
- * Finishes an operation started with g_dbus_connection_call().
- *
- * Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
- * return values. Free with g_variant_unref().
- *
- * Since: 2.26
- */
-GVariant *
-g_dbus_connection_call_finish (GDBusConnection *connection,
- GAsyncResult *res,
- GError **error)
+/* called in any thread, with the connection's lock not held */
+static GVariant *
+g_dbus_connection_call_finish_internal (GDBusConnection *connection,
+ GUnixFDList **out_fd_list,
+ GAsyncResult *res,
+ GError **error)
{
GSimpleAsyncResult *simple;
+ CallState *state;
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), NULL);
g_return_val_if_fail (g_simple_async_result_is_valid (res, G_OBJECT (connection),
- g_dbus_connection_call), NULL);
+ g_dbus_connection_call_internal), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
simple = G_SIMPLE_ASYNC_RESULT (res);
if (g_simple_async_result_propagate_error (simple, error))
return NULL;
- return g_variant_ref (g_simple_async_result_get_op_res_gpointer (simple));
+ state = g_simple_async_result_get_op_res_gpointer (simple);
+ if (out_fd_list != NULL)
+ *out_fd_list = state->fd_list != NULL ? g_object_ref (state->fd_list) : NULL;
+ return g_variant_ref (state->value);
}
-/* ---------------------------------------------------------------------------------------------------- */
-
-/**
- * g_dbus_connection_call_sync:
- * @connection: A #GDBusConnection.
- * @bus_name: A unique or well-known bus name.
- * @object_path: Path of remote object.
- * @interface_name: D-Bus interface to invoke method on.
- * @method_name: The name of the method to invoke.
- * @parameters: A #GVariant tuple with parameters for the method or %NULL if not passing parameters.
- * @reply_type: The expected type of the reply, or %NULL.
- * @flags: Flags from the #GDBusCallFlags enumeration.
- * @timeout_msec: The timeout in milliseconds or -1 to use the default timeout.
- * @cancellable: A #GCancellable or %NULL.
- * @error: Return location for error or %NULL.
- *
- * Synchronously invokes the @method_name method on the
- * @interface_name D-Bus interface on the remote object at
- * @object_path owned by @bus_name.
- *
- * If @connection is closed then the operation will fail with
- * %G_IO_ERROR_CLOSED. If @cancellable is canceled, the
- * operation will fail with %G_IO_ERROR_CANCELLED. If @parameters
- * contains a value not compatible with the D-Bus protocol, the operation
- * fails with %G_IO_ERROR_INVALID_ARGUMENT.
-
- * If @reply_type is non-%NULL then the reply will be checked for having
- * this type and an error will be raised if it does not match. Said
- * another way, if you give a @reply_type then any non-%NULL return
- * value will be of this type.
- *
- * If the @parameters #GVariant is floating, it is consumed.
- * This allows convenient 'inline' use of g_variant_new(), e.g.:
- * |[
- * g_dbus_connection_call_sync (connection,
- * "org.freedesktop.StringThings",
- * "/org/freedesktop/StringThings",
- * "org.freedesktop.StringThings",
- * "TwoStrings",
- * g_variant_new ("(ss)",
- * "Thing One",
- * "Thing Two"),
- * NULL,
- * G_DBUS_CALL_FLAGS_NONE,
- * -1,
- * NULL,
- * &error);
- * ]|
- *
- * The calling thread is blocked until a reply is received. See
- * g_dbus_connection_call() for the asynchronous version of
- * this method.
- *
- * Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
- * return values. Free with g_variant_unref().
- *
- * Since: 2.26
- */
-GVariant *
-g_dbus_connection_call_sync (GDBusConnection *connection,
- const gchar *bus_name,
- const gchar *object_path,
- const gchar *interface_name,
- const gchar *method_name,
- GVariant *parameters,
- const GVariantType *reply_type,
- GDBusCallFlags flags,
- gint timeout_msec,
- GCancellable *cancellable,
- GError **error)
+/* called in any user thread, with the connection's lock not held */
+static GVariant *
+g_dbus_connection_call_sync_internal (GDBusConnection *connection,
+ const gchar *bus_name,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *method_name,
+ GVariant *parameters,
+ const GVariantType *reply_type,
+ GDBusCallFlags flags,
+ gint timeout_msec,
+ GUnixFDList *fd_list,
+ GUnixFDList **out_fd_list,
+ GCancellable *cancellable,
+ GError **error)
{
GDBusMessage *message;
GDBusMessage *reply;
GVariant *result;
GError *local_error;
+ GDBusSendMessageFlags send_flags;
message = NULL;
reply = NULL;
g_return_val_if_fail (method_name != NULL && g_dbus_is_member_name (method_name), NULL);
g_return_val_if_fail (timeout_msec >= 0 || timeout_msec == -1, NULL);
g_return_val_if_fail ((parameters == NULL) || g_variant_is_of_type (parameters, G_VARIANT_TYPE_TUPLE), NULL);
+#ifdef G_OS_UNIX
+ g_return_val_if_fail (fd_list == NULL || G_IS_UNIX_FD_LIST (fd_list), NULL);
+#else
+ g_return_val_if_fail (fd_list == NULL, NULL);
+#endif
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ if (!(flags & CALL_FLAGS_INITIALIZING))
+ g_return_val_if_fail (check_initialized (connection), FALSE);
if (reply_type == NULL)
reply_type = G_VARIANT_TYPE_ANY;
if (parameters != NULL)
g_dbus_message_set_body (message, parameters);
+#ifdef G_OS_UNIX
+ if (fd_list != NULL)
+ g_dbus_message_set_unix_fd_list (message, fd_list);
+#endif
+
if (G_UNLIKELY (_g_dbus_debug_call ()))
{
_g_dbus_debug_print_lock ();
}
local_error = NULL;
+
+ send_flags = G_DBUS_SEND_MESSAGE_FLAGS_NONE;
+
+ /* translate from one flavour of flags to another... */
+ if (flags & CALL_FLAGS_INITIALIZING)
+ send_flags |= SEND_MESSAGE_FLAGS_INITIALIZING;
+
reply = g_dbus_connection_send_message_with_reply_sync (connection,
message,
- flags,
+ send_flags,
timeout_msec,
NULL, /* volatile guint32 *out_serial */
cancellable,
goto out;
}
- result = decode_method_reply (reply, method_name, reply_type, error);
+ result = decode_method_reply (reply, method_name, reply_type, out_fd_list, error);
out:
if (message != NULL)
/* ---------------------------------------------------------------------------------------------------- */
+/**
+ * g_dbus_connection_call:
+ * @connection: A #GDBusConnection.
+ * @bus_name: (allow-none): A unique or well-known bus name or %NULL if
+ * @connection is not a message bus connection.
+ * @object_path: Path of remote object.
+ * @interface_name: D-Bus interface to invoke method on.
+ * @method_name: The name of the method to invoke.
+ * @parameters: (allow-none): A #GVariant tuple with parameters for the method
+ * or %NULL if not passing parameters.
+ * @reply_type: (allow-none): The expected type of the reply, or %NULL.
+ * @flags: Flags from the #GDBusCallFlags enumeration.
+ * @timeout_msec: The timeout in milliseconds, -1 to use the default
+ * timeout or %G_MAXINT for no timeout.
+ * @cancellable: A #GCancellable or %NULL.
+ * @callback: (allow-none): A #GAsyncReadyCallback to call when the request is
+ * satisfied or %NULL if you don't * care about the result of the
+ * method invocation.
+ * @user_data: The data to pass to @callback.
+ *
+ * Asynchronously invokes the @method_name method on the
+ * @interface_name D-Bus interface on the remote object at
+ * @object_path owned by @bus_name.
+ *
+ * If @connection is closed then the operation will fail with
+ * %G_IO_ERROR_CLOSED. If @cancellable is canceled, the operation will
+ * fail with %G_IO_ERROR_CANCELLED. If @parameters contains a value
+ * not compatible with the D-Bus protocol, the operation fails with
+ * %G_IO_ERROR_INVALID_ARGUMENT.
+ *
+ * If @reply_type is non-%NULL then the reply will be checked for having this type and an
+ * error will be raised if it does not match. Said another way, if you give a @reply_type
+ * then any non-%NULL return value will be of this type.
+ *
+ * If the @parameters #GVariant is floating, it is consumed. This allows
+ * convenient 'inline' use of g_variant_new(), e.g.:
+ * |[
+ * g_dbus_connection_call (connection,
+ * "org.freedesktop.StringThings",
+ * "/org/freedesktop/StringThings",
+ * "org.freedesktop.StringThings",
+ * "TwoStrings",
+ * g_variant_new ("(ss)",
+ * "Thing One",
+ * "Thing Two"),
+ * NULL,
+ * G_DBUS_CALL_FLAGS_NONE,
+ * -1,
+ * NULL,
+ * (GAsyncReadyCallback) two_strings_done,
+ * NULL);
+ * ]|
+ *
+ * This is an asynchronous method. When the operation is finished, @callback will be invoked
+ * in the <link linkend="g-main-context-push-thread-default">thread-default main loop</link>
+ * of the thread you are calling this method from. You can then call
+ * g_dbus_connection_call_finish() to get the result of the operation.
+ * See g_dbus_connection_call_sync() for the synchronous version of this
+ * function.
+ *
+ * Since: 2.26
+ */
+void
+g_dbus_connection_call (GDBusConnection *connection,
+ const gchar *bus_name,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *method_name,
+ GVariant *parameters,
+ const GVariantType *reply_type,
+ GDBusCallFlags flags,
+ gint timeout_msec,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_dbus_connection_call_internal (connection, bus_name, object_path, interface_name, method_name, parameters, reply_type, flags, timeout_msec, NULL, cancellable, callback, user_data);
+}
+
+/**
+ * g_dbus_connection_call_finish:
+ * @connection: A #GDBusConnection.
+ * @res: A #GAsyncResult obtained from the #GAsyncReadyCallback passed to g_dbus_connection_call().
+ * @error: Return location for error or %NULL.
+ *
+ * Finishes an operation started with g_dbus_connection_call().
+ *
+ * Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
+ * return values. Free with g_variant_unref().
+ *
+ * Since: 2.26
+ */
+GVariant *
+g_dbus_connection_call_finish (GDBusConnection *connection,
+ GAsyncResult *res,
+ GError **error)
+{
+ return g_dbus_connection_call_finish_internal (connection, NULL, res, error);
+}
+
+/**
+ * g_dbus_connection_call_sync:
+ * @connection: A #GDBusConnection.
+ * @bus_name: A unique or well-known bus name.
+ * @object_path: Path of remote object.
+ * @interface_name: D-Bus interface to invoke method on.
+ * @method_name: The name of the method to invoke.
+ * @parameters: (allow-none): A #GVariant tuple with parameters for the method
+ * or %NULL if not passing parameters.
+ * @reply_type: (allow-none): The expected type of the reply, or %NULL.
+ * @flags: Flags from the #GDBusCallFlags enumeration.
+ * @timeout_msec: The timeout in milliseconds, -1 to use the default
+ * timeout or %G_MAXINT for no timeout.
+ * @cancellable: A #GCancellable or %NULL.
+ * @error: Return location for error or %NULL.
+ *
+ * Synchronously invokes the @method_name method on the
+ * @interface_name D-Bus interface on the remote object at
+ * @object_path owned by @bus_name.
+ *
+ * If @connection is closed then the operation will fail with
+ * %G_IO_ERROR_CLOSED. If @cancellable is canceled, the
+ * operation will fail with %G_IO_ERROR_CANCELLED. If @parameters
+ * contains a value not compatible with the D-Bus protocol, the operation
+ * fails with %G_IO_ERROR_INVALID_ARGUMENT.
+
+ * If @reply_type is non-%NULL then the reply will be checked for having
+ * this type and an error will be raised if it does not match. Said
+ * another way, if you give a @reply_type then any non-%NULL return
+ * value will be of this type.
+ *
+ * If the @parameters #GVariant is floating, it is consumed.
+ * This allows convenient 'inline' use of g_variant_new(), e.g.:
+ * |[
+ * g_dbus_connection_call_sync (connection,
+ * "org.freedesktop.StringThings",
+ * "/org/freedesktop/StringThings",
+ * "org.freedesktop.StringThings",
+ * "TwoStrings",
+ * g_variant_new ("(ss)",
+ * "Thing One",
+ * "Thing Two"),
+ * NULL,
+ * G_DBUS_CALL_FLAGS_NONE,
+ * -1,
+ * NULL,
+ * &error);
+ * ]|
+ *
+ * The calling thread is blocked until a reply is received. See
+ * g_dbus_connection_call() for the asynchronous version of
+ * this method.
+ *
+ * Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
+ * return values. Free with g_variant_unref().
+ *
+ * Since: 2.26
+ */
+GVariant *
+g_dbus_connection_call_sync (GDBusConnection *connection,
+ const gchar *bus_name,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *method_name,
+ GVariant *parameters,
+ const GVariantType *reply_type,
+ GDBusCallFlags flags,
+ gint timeout_msec,
+ GCancellable *cancellable,
+ GError **error)
+{
+ return g_dbus_connection_call_sync_internal (connection, bus_name, object_path, interface_name, method_name, parameters, reply_type, flags, timeout_msec, NULL, NULL, cancellable, error);
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
+#ifdef G_OS_UNIX
+
+/**
+ * g_dbus_connection_call_with_unix_fd_list:
+ * @connection: A #GDBusConnection.
+ * @bus_name: (allow-none): A unique or well-known bus name or %NULL if
+ * @connection is not a message bus connection.
+ * @object_path: Path of remote object.
+ * @interface_name: D-Bus interface to invoke method on.
+ * @method_name: The name of the method to invoke.
+ * @parameters: (allow-none): A #GVariant tuple with parameters for the method
+ * or %NULL if not passing parameters.
+ * @reply_type: (allow-none): The expected type of the reply, or %NULL.
+ * @flags: Flags from the #GDBusCallFlags enumeration.
+ * @timeout_msec: The timeout in milliseconds, -1 to use the default
+ * timeout or %G_MAXINT for no timeout.
+ * @fd_list: (allow-none): A #GUnixFDList or %NULL.
+ * @cancellable: A #GCancellable or %NULL.
+ * @callback: (allow-none): A #GAsyncReadyCallback to call when the request is
+ * satisfied or %NULL if you don't * care about the result of the
+ * method invocation.
+ * @user_data: The data to pass to @callback.
+ *
+ * Like g_dbus_connection_call() but also takes a #GUnixFDList object.
+ *
+ * This method is only available on UNIX.
+ *
+ * Since: 2.30
+ */
+void
+g_dbus_connection_call_with_unix_fd_list (GDBusConnection *connection,
+ const gchar *bus_name,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *method_name,
+ GVariant *parameters,
+ const GVariantType *reply_type,
+ GDBusCallFlags flags,
+ gint timeout_msec,
+ GUnixFDList *fd_list,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_dbus_connection_call_internal (connection, bus_name, object_path, interface_name, method_name, parameters, reply_type, flags, timeout_msec, fd_list, cancellable, callback, user_data);
+}
+
+/**
+ * g_dbus_connection_call_with_unix_fd_list_finish:
+ * @connection: A #GDBusConnection.
+ * @out_fd_list: (out): Return location for a #GUnixFDList or %NULL.
+ * @res: A #GAsyncResult obtained from the #GAsyncReadyCallback passed to g_dbus_connection_call_with_unix_fd_list().
+ * @error: Return location for error or %NULL.
+ *
+ * Finishes an operation started with g_dbus_connection_call_with_unix_fd_list().
+ *
+ * Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
+ * return values. Free with g_variant_unref().
+ *
+ * Since: 2.30
+ */
+GVariant *
+g_dbus_connection_call_with_unix_fd_list_finish (GDBusConnection *connection,
+ GUnixFDList **out_fd_list,
+ GAsyncResult *res,
+ GError **error)
+{
+ return g_dbus_connection_call_finish_internal (connection, out_fd_list, res, error);
+}
+
+/**
+ * g_dbus_connection_call_with_unix_fd_list_sync:
+ * @connection: A #GDBusConnection.
+ * @bus_name: A unique or well-known bus name.
+ * @object_path: Path of remote object.
+ * @interface_name: D-Bus interface to invoke method on.
+ * @method_name: The name of the method to invoke.
+ * @parameters: (allow-none): A #GVariant tuple with parameters for the method
+ * or %NULL if not passing parameters.
+ * @reply_type: (allow-none): The expected type of the reply, or %NULL.
+ * @flags: Flags from the #GDBusCallFlags enumeration.
+ * @timeout_msec: The timeout in milliseconds, -1 to use the default
+ * timeout or %G_MAXINT for no timeout.
+ * @fd_list: (allow-none): A #GUnixFDList or %NULL.
+ * @out_fd_list: (out): Return location for a #GUnixFDList or %NULL.
+ * @cancellable: A #GCancellable or %NULL.
+ * @error: Return location for error or %NULL.
+ *
+ * Like g_dbus_connection_call_sync() but also takes and returns #GUnixFDList objects.
+ *
+ * This method is only available on UNIX.
+ *
+ * Returns: %NULL if @error is set. Otherwise a #GVariant tuple with
+ * return values. Free with g_variant_unref().
+ *
+ * Since: 2.30
+ */
+GVariant *
+g_dbus_connection_call_with_unix_fd_list_sync (GDBusConnection *connection,
+ const gchar *bus_name,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *method_name,
+ GVariant *parameters,
+ const GVariantType *reply_type,
+ GDBusCallFlags flags,
+ gint timeout_msec,
+ GUnixFDList *fd_list,
+ GUnixFDList **out_fd_list,
+ GCancellable *cancellable,
+ GError **error)
+{
+ return g_dbus_connection_call_sync_internal (connection, bus_name, object_path, interface_name, method_name, parameters, reply_type, flags, timeout_msec, fd_list, out_fd_list, cancellable, error);
+}
+
+#endif /* G_OS_UNIX */
+
+/* ---------------------------------------------------------------------------------------------------- */
+
struct ExportedSubtree
{
guint id;
static void
exported_subtree_free (ExportedSubtree *es)
{
- if (es->user_data_free_func != NULL)
- /* TODO: push to thread-default mainloop */
- es->user_data_free_func (es->user_data);
+ call_destroy_notify (es->context,
+ es->user_data_free_func,
+ es->user_data);
- if (es->context != NULL)
- g_main_context_unref (es->context);
+ g_main_context_unref (es->context);
_g_dbus_subtree_vtable_free (es->vtable);
g_free (es->object_path);
g_free (es);
}
-/* called without lock held */
+/* called without lock held in the thread where the caller registered
+ * the subtree
+ */
static gboolean
handle_subtree_introspect (GDBusConnection *connection,
ExportedSubtree *es,
GDBusInterfaceInfo **interfaces;
guint n;
gchar **subnode_paths;
+ gboolean has_properties_interface;
+ gboolean has_introspectable_interface;
handled = FALSE;
es->user_data);
if (interfaces != NULL)
{
- introspect_append_standard_interfaces (s);
+ has_properties_interface = FALSE;
+ has_introspectable_interface = FALSE;
+
+ for (n = 0; interfaces[n] != NULL; n++)
+ {
+ if (strcmp (interfaces[n]->name, "org.freedesktop.DBus.Properties") == 0)
+ has_properties_interface = TRUE;
+ else if (strcmp (interfaces[n]->name, "org.freedesktop.DBus.Introspectable") == 0)
+ has_introspectable_interface = TRUE;
+ }
+ if (!has_properties_interface)
+ g_string_append (s, introspect_properties_interface);
+ if (!has_introspectable_interface)
+ g_string_append (s, introspect_introspectable_interface);
for (n = 0; interfaces[n] != NULL; n++)
{
return handled;
}
-/* called without lock held */
+/* called without lock held in the thread where the caller registered
+ * the subtree
+ */
static gboolean
handle_subtree_method_invocation (GDBusConnection *connection,
ExportedSubtree *es,
return FALSE;
}
-/* called in message handler thread with lock held */
+/* called in GDBusWorker thread with connection's lock held */
static gboolean
subtree_message_func (GDBusConnection *connection,
ExportedSubtree *es,
g_return_val_if_fail (object_path != NULL && g_variant_is_object_path (object_path), 0);
g_return_val_if_fail (vtable != NULL, 0);
g_return_val_if_fail (error == NULL || *error == NULL, 0);
+ g_return_val_if_fail (check_initialized (connection), 0);
ret = 0;
es->id = _global_subtree_registration_id++; /* TODO: overflow etc. */
es->user_data = user_data;
es->user_data_free_func = user_data_free_func;
- es->context = g_main_context_get_thread_default ();
- if (es->context != NULL)
- g_main_context_ref (es->context);
+ es->context = g_main_context_ref_thread_default ();
g_hash_table_insert (connection->map_object_path_to_es, es->object_path, es);
g_hash_table_insert (connection->map_id_to_es,
gboolean ret;
g_return_val_if_fail (G_IS_DBUS_CONNECTION (connection), FALSE);
+ g_return_val_if_fail (check_initialized (connection), FALSE);
ret = FALSE;
/* ---------------------------------------------------------------------------------------------------- */
-/* must be called with lock held */
+/* may be called in any thread, with connection's lock held */
static void
handle_generic_ping_unlocked (GDBusConnection *connection,
const gchar *object_path,
g_object_unref (reply);
}
-/* must be called with lock held */
+/* may be called in any thread, with connection's lock held */
static void
handle_generic_get_machine_id_unlocked (GDBusConnection *connection,
const gchar *object_path,
g_object_unref (reply);
}
-/* must be called with lock held */
+/* may be called in any thread, with connection's lock held */
static void
handle_generic_introspect_unlocked (GDBusConnection *connection,
const gchar *object_path,
g_string_free (s, TRUE);
}
-/* must be called with lock held */
+/* may be called in any thread, with connection's lock held */
static gboolean
handle_generic_unlocked (GDBusConnection *connection,
GDBusMessage *message)
/* ---------------------------------------------------------------------------------------------------- */
-/* called in message handler thread with lock held */
+/* called in GDBusWorker thread with connection's lock held */
static void
distribute_method_call (GDBusConnection *connection,
GDBusMessage *message)
const gchar *object_path;
const gchar *interface_name;
const gchar *member;
- const gchar *signature;
const gchar *path;
gchar *subtree_path;
gchar *needle;
interface_name = g_dbus_message_get_interface (message);
member = g_dbus_message_get_member (message);
- signature = g_dbus_message_get_signature (message);
path = g_dbus_message_get_path (message);
subtree_path = g_strdup (path);
needle = strrchr (subtree_path, '/');
_g_dbus_debug_print_lock ();
g_print ("========================================================================\n"
"GDBus-debug:Incoming:\n"
- " >>>> METHOD INVOCATION %s.%s()\n"
+ " <<<< METHOD INVOCATION %s.%s()\n"
" on object %s\n"
- " invoked by name %s\n",
+ " invoked by name %s\n"
+ " serial %d\n",
interface_name, member,
path,
- g_dbus_message_get_sender (message) != NULL ? g_dbus_message_get_sender (message) : "(none)");
+ g_dbus_message_get_sender (message) != NULL ? g_dbus_message_get_sender (message) : "(none)",
+ g_dbus_message_get_serial (message));
_g_dbus_debug_print_unlock ();
}
-#if 0
- g_debug ("interface = `%s'", interface_name);
- g_debug ("member = `%s'", member);
- g_debug ("signature = `%s'", signature);
- g_debug ("path = `%s'", path);
- g_debug ("subtree_path = `%s'", subtree_path != NULL ? subtree_path : "N/A");
-#endif
-
object_path = g_dbus_message_get_path (message);
g_assert (object_path != NULL);
/* ---------------------------------------------------------------------------------------------------- */
+/* Called in any user thread, with the message_bus_lock held. */
static GDBusConnection **
message_bus_get_singleton (GBusType bus_type,
GError **error)
return ret;
}
+/* Called in any user thread, without holding locks. */
static GDBusConnection *
get_uninitialized_connection (GBusType bus_type,
GCancellable *cancellable,
* Note that the returned #GDBusConnection object will (usually) have
* the #GDBusConnection:exit-on-close property set to %TRUE.
*
- * Returns: A #GDBusConnection or %NULL if @error is set. Free with g_object_unref().
+ * Returns: (transfer full): A #GDBusConnection or %NULL if @error is set. Free with g_object_unref().
*
* Since: 2.26
*/
&error))
{
g_assert (error != NULL);
- g_simple_async_result_set_from_error (simple, error);
- g_error_free (error);
+ g_simple_async_result_take_error (simple, error);
g_object_unref (source_object);
}
else
if (connection == NULL)
{
g_assert (error != NULL);
- g_simple_async_result_set_from_error (simple, error);
- g_error_free (error);
+ g_simple_async_result_take_error (simple, error);
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
}
* The returned object is a singleton, that is, shared with other
* callers of g_bus_get() and g_bus_get_sync() for @bus_type. In the
* event that you need a private message bus connection, use
- * g_dbus_address_get_for_bus() and
+ * g_dbus_address_get_for_bus_sync() and
* g_dbus_connection_new_for_address().
*
* Note that the returned #GDBusConnection object will (usually) have
* the #GDBusConnection:exit-on-close property set to %TRUE.
*
- * Returns: A #GDBusConnection or %NULL if @error is set. Free with g_object_unref().
+ * Returns: (transfer full): A #GDBusConnection or %NULL if @error is set. Free with g_object_unref().
*
* Since: 2.26
*/
projects / platform / upstream / glib.git / blobdiff