From b711e0d0919e288cd2ad4dddc9d32a55e40afdea Mon Sep 17 00:00:00 2001
From: Michael Mueller <michael.mueller@uos.de>
Date: Mon, 7 Aug 2023 17:54:24 +0200
Subject: [PATCH] Example for a cell that voluntarily terminates after a period
 of time.

---
 repos/mml/src/app/volatile_cell/target.mk     |  3 ++
 .../src/app/volatile_cell/volatile_cell.cc    | 35 +++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 repos/mml/src/app/volatile_cell/target.mk
 create mode 100644 repos/mml/src/app/volatile_cell/volatile_cell.cc

diff --git a/repos/mml/src/app/volatile_cell/target.mk b/repos/mml/src/app/volatile_cell/target.mk
new file mode 100644
index 0000000000..ec6dfc3aae
--- /dev/null
+++ b/repos/mml/src/app/volatile_cell/target.mk
@@ -0,0 +1,3 @@
+TARGET = volatile_cell
+SRC_CC = volatile_cell.cc
+LIBS += base 
\ No newline at end of file
diff --git a/repos/mml/src/app/volatile_cell/volatile_cell.cc b/repos/mml/src/app/volatile_cell/volatile_cell.cc
new file mode 100644
index 0000000000..5f866d1cb4
--- /dev/null
+++ b/repos/mml/src/app/volatile_cell/volatile_cell.cc
@@ -0,0 +1,35 @@
+#include <base/component.h>
+#include <base/env.h>
+#include <timer_session/connection.h>
+#include <base/log.h>
+
+namespace Hoitaja_test {
+    class Volatile_cell;
+}
+
+
+class Hoitaja_test::Volatile_cell
+{
+    private:
+        Genode::Env &_env;
+        Timer::Connection _timer{_env};
+
+        void _handle_timeout()
+        {
+            Genode::log("My time has come. Exiting ...");
+            _env.parent().exit(0);
+        }
+
+        Genode::Signal_handler<Volatile_cell> _timeout_handler{
+            _env.ep(), *this, &Volatile_cell::_handle_timeout};
+
+    public:
+        Volatile_cell(Genode::Env &env) : _env(env) 
+        {
+            Genode::log("My affinity space is ", _env.cpu().affinity_space());
+            _timer.sigh(_timeout_handler);
+            _timer.trigger_once(30 * 1000 * 1000);
+        }
+};
+
+void Component::construct(Genode::Env &env) { static Hoitaja_test::Volatile_cell cell(env); }
\ No newline at end of file