Add simple async signal example

include/signals_session/client.h

@@ -0,0 +1,19 @@
+#ifndef _INCLUDE__SIGNALS_SESSION__CLIENT_H_
+#define _INCLUDE__SIGNALS_SESSION__CLIENT_H_
+
+#include <signals_session/signals_session.h>
+#include <base/rpc_client.h>
+
+namespace Signals { struct Session_client; }
+
+struct Signals::Session_client : Genode::Rpc_client<Session>
+{
+  Session_client(Genode::Capability<Session> cap) : Genode::Rpc_client<Session>(cap) {
+  }
+
+  Genode::Signal_context_capability get_sig_con() override {
+    return call<Rpc_get_sig_con>();
+  }
+};
+
+#endif /* _INCLUDE__SIGNALS_SESSION__CLIENT_H_ */

include/signals_session/connection.h

@@ -0,0 +1,14 @@
+#ifndef _INCLUDE__SIGNALS_SESSION__CONNECTION_H_
+#define _INCLUDE__SIGNALS_SESSION__CONNECTION_H_
+
+#include <signals_session/client.h>
+#include <base/connection.h>
+
+namespace Signals { struct Connection; }
+
+struct Signals::Connection : Genode::Connection<Session>, Session_client {
+ Connection(Genode::Env &env) : Genode::Connection<Signals::Session>(env, session(env.parent(), "ram_quota=6K, cap_quota=4")),
+									    Session_client(cap()) { }
+};
+
+#endif /* _INCLUDE__SIGNALS_SESSION__CONNECTION_H_ */

include/signals_session/signals_session.h

@@ -0,0 +1,21 @@
+#ifndef _INCLUDE__SIGNALS_SESSION__SIGNALS_SESSION_H
+#define _INCLUDE__SIGNALS_SESSION__SIGNALS_SESSION_H
+
+#include <session/session.h>
+#include <base/rpc.h>
+
+namespace Signals { struct Session; }
+
+struct Signals::Session : Genode::Session {
+  static const char *service_name() { return "Signals"; }
+
+  enum { CAP_QUOTA = 2 };
+
+  virtual Genode::Signal_context_capability get_sig_con() = 0;
+
+  GENODE_RPC(Rpc_get_sig_con, Genode::Signal_context_capability, get_sig_con);
+
+  GENODE_RPC_INTERFACE(Rpc_get_sig_con);
+};
+
+#endif /* _INCLUDE__SIGNALS_SESSION__SIGNALS_SESSION_H */