Merge "Optional autogen.sh flag --enable-kdbus-transport added allowing to compile...
[platform/upstream/dbus.git] / dbus / dbus-connection.c
index 851dc90..9167619 100644 (file)
@@ -2,6 +2,7 @@
 /* dbus-connection.c DBusConnection object
  *
  * Copyright (C) 2002-2006  Red Hat Inc.
+ * Copyright (C) 2013  Samsung Electronics
  *
  * Licensed under the Academic Free License version 2.1
  * 
 #include "dbus-threads-internal.h"
 #include "dbus-bus.h"
 #include "dbus-marshal-basic.h"
+#ifdef ENABLE_KDBUS_TRANSPORT
 #include "dbus-transport-kdbus.h"
 #include <stdlib.h>
+#endif
 
 #ifdef DBUS_DISABLE_CHECKS
 #define TOOK_LOCK_CHECK(connection)
@@ -1246,9 +1249,14 @@ _dbus_connection_do_iteration_unlocked (DBusConnection *connection,
  *
  * @param transport the transport.
  * @returns the new connection, or #NULL on failure.
- */
+*/
+#ifdef ENABLE_KDBUS_TRANSPORT
+static DBusConnection*
+_dbus_connection_new_for_transport_internal (DBusTransport *transport, dbus_bool_t exists)
+#else
 DBusConnection*
 _dbus_connection_new_for_transport (DBusTransport *transport)
+#endif
 {
   DBusConnection *connection;
   DBusWatchList *watch_list;
@@ -1278,7 +1286,7 @@ _dbus_connection_new_for_transport (DBusTransport *transport)
 
   pending_replies =
     _dbus_hash_table_new (DBUS_HASH_INT,
-                         NULL,
+              NULL,
                           (DBusFreeFunction)free_pending_call_on_hash_removal);
   if (pending_replies == NULL)
     goto error;
@@ -1359,18 +1367,23 @@ _dbus_connection_new_for_transport (DBusTransport *transport)
 
   connection->disconnect_message_link = disconnect_link;
 
-  CONNECTION_LOCK (connection);
-  
-  if (!_dbus_transport_set_connection (transport, connection))
-    {
-      CONNECTION_UNLOCK (connection);
+#ifdef ENABLE_KDBUS_TRANSPORT
+  if(!exists)
+#endif
+  {
+      CONNECTION_LOCK (connection);
 
-      goto error;
-    }
+      if (!_dbus_transport_set_connection (transport, connection))
+        {
+          CONNECTION_UNLOCK (connection);
 
-  _dbus_transport_ref (transport);
+          goto error;
+        }
 
-  CONNECTION_UNLOCK (connection);
+      _dbus_transport_ref (transport);
+
+      CONNECTION_UNLOCK (connection);
+  }
 
   _dbus_connection_trace_ref (connection, 0, 1, "new_for_transport");
   return connection;
@@ -1410,6 +1423,29 @@ _dbus_connection_new_for_transport (DBusTransport *transport)
   return NULL;
 }
 
+#ifdef ENABLE_KDBUS_TRANSPORT
+/**
+ * Creates a new connection for the given transport.  A transport
+ * represents a message stream that uses some concrete mechanism, such
+ * as UNIX domain sockets. May return #NULL if insufficient
+ * memory exists to create the connection.
+ *
+ * @param transport the transport.
+ * @returns the new connection, or #NULL on failure.
+ */
+DBusConnection*
+_dbus_connection_new_for_transport (DBusTransport *transport)
+{
+    return _dbus_connection_new_for_transport_internal(transport, FALSE);
+}
+
+DBusConnection*
+_dbus_connection_new_for_used_transport (DBusTransport *transport)
+{
+    return _dbus_connection_new_for_transport_internal(transport, TRUE);
+}
+#endif
+
 /**
  * Increments the reference count of a DBusConnection.
  * Requires that the caller already holds the connection lock.
@@ -2678,12 +2714,13 @@ free_outgoing_message (void *element,
   dbus_message_unref (message);
 }
 
-/* This is run without the mutex held, but after the last reference
- * to the connection has been dropped we should have no thread-related
- * problems
- */
+#ifdef ENABLE_KDBUS_TRANSPORT
+static void
+_dbus_connection_last_unref_internal (DBusConnection *connection, dbus_bool_t unref_transport)
+#else
 static void
 _dbus_connection_last_unref (DBusConnection *connection)
+#endif
 {
   DBusList *link;
 
@@ -2694,7 +2731,10 @@ _dbus_connection_last_unref (DBusConnection *connection)
   /* You have to disconnect the connection before unref:ing it. Otherwise
    * you won't get the disconnected message.
    */
-  _dbus_assert (!_dbus_transport_get_is_connected (connection->transport));
+#ifdef ENABLE_KDBUS_TRANSPORT
+  if(unref_transport)
+#endif
+      _dbus_assert (!_dbus_transport_get_is_connected (connection->transport));
   _dbus_assert (connection->server_guid == NULL);
   
   /* ---- We're going to call various application callbacks here, hope it doesn't break anything... */
@@ -2738,17 +2778,20 @@ _dbus_connection_last_unref (DBusConnection *connection)
   
   _dbus_list_foreach (&connection->outgoing_messages,
                       free_outgoing_message,
-                     connection);
+              connection);
   _dbus_list_clear (&connection->outgoing_messages);
   
   _dbus_list_foreach (&connection->incoming_messages,
-                     (DBusForeachFunction) dbus_message_unref,
-                     NULL);
+              (DBusForeachFunction) dbus_message_unref,
+              NULL);
   _dbus_list_clear (&connection->incoming_messages);
 
   _dbus_counter_unref (connection->outgoing_counter);
 
-  _dbus_transport_unref (connection->transport);
+#ifdef ENABLE_KDBUS_TRANSPORT
+  if(unref_transport)
+#endif
+      _dbus_transport_unref (connection->transport);
 
   if (connection->disconnect_message_link)
     {
@@ -2770,6 +2813,18 @@ _dbus_connection_last_unref (DBusConnection *connection)
   dbus_free (connection);
 }
 
+#ifdef ENABLE_KDBUS_TRANSPORT
+/* This is run without the mutex held, but after the last reference
+ * to the connection has been dropped we should have no thread-related
+ * problems
+ */
+static void
+_dbus_connection_last_unref (DBusConnection *connection)
+{
+    _dbus_connection_last_unref_internal(connection, TRUE);
+}
+#endif
+
 /**
  * Decrements the reference count of a DBusConnection, and finalizes
  * it if the count reaches zero.
@@ -2818,6 +2873,24 @@ dbus_connection_unref (DBusConnection *connection)
     }
 }
 
+#ifdef ENABLE_KDBUS_TRANSPORT
+void
+dbus_connection_unref_phantom (DBusConnection *connection)
+{
+  dbus_int32_t old_refcount;
+
+  _dbus_return_if_fail (connection != NULL);
+  _dbus_return_if_fail (connection->generation == _dbus_current_generation);
+
+  old_refcount = _dbus_atomic_dec (&connection->refcount);
+
+  _dbus_connection_trace_ref (connection, old_refcount, old_refcount - 1, "unref");
+
+  if (old_refcount == 1)
+      _dbus_connection_last_unref_internal(connection, FALSE);
+}
+#endif
+
 /*
  * Note that the transport can disconnect itself (other end drops us)
  * and in that case this function never runs. So this function must
@@ -2981,6 +3054,7 @@ dbus_connection_get_is_authenticated (DBusConnection *connection)
   return res;
 }
 
+#ifdef ENABLE_KDBUS_TRANSPORT
 /**
  * Sets authenticated status for connection. Needed for kdbus, where authentication is
  * made in different manner.
@@ -2998,6 +3072,7 @@ dbus_connection_set_is_authenticated (DBusConnection *connection)
 
   return TRUE;
 }
+#endif
 
 /**
  * Gets whether the connection is not authenticated as a specific
@@ -6311,6 +6386,7 @@ _dbus_connection_get_address (DBusConnection *connection)
   return _dbus_transport_get_address (connection->transport);
 }
 
+#ifdef ENABLE_KDBUS_TRANSPORT
 DBusTransport*
 dbus_connection_get_transport(DBusConnection *connection)
 {
@@ -6318,5 +6394,6 @@ dbus_connection_get_transport(DBusConnection *connection)
 
        return connection->transport;
 }
+#endif
 
 /** @} */