Integrate SIGNAL session into PD session

This patch removes the SIGNAL service from core and moves its
functionality to the PD session. Furthermore, it unifies the PD service
implementation and terminology across the various base platforms.

Issue #1841

repos/base-foc/include/signal_source/rpc_object.h

@@ -0,0 +1,38 @@
+/*
+ * \brief  Signal-source server interface
+ * \author Norman Feske
+ * \date   2010-02-03
+ */
+
+/*
+ * Copyright (C) 2010-2013 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _INCLUDE__SIGNAL_SOURCE__RPC_OBJECT_H_
+#define _INCLUDE__SIGNAL_SOURCE__RPC_OBJECT_H_
+
+#include <base/rpc_server.h>
+#include <signal_source/foc_signal_source.h>
+
+namespace Genode { struct Signal_source_rpc_object; }
+
+
+struct Genode::Signal_source_rpc_object : Rpc_object<Foc_signal_source,
+                                                     Signal_source_rpc_object>
+{
+	protected:
+
+		Native_capability _blocking_semaphore;
+
+	public:
+
+		Signal_source_rpc_object(Native_capability cap)
+		: _blocking_semaphore(cap) {}
+
+		Native_capability _request_semaphore() { return _blocking_semaphore; }
+};
+
+#endif /* _INCLUDE__SIGNAL_SOURCE__RPC_OBJECT_H_ */