Split: Split libspinscale off from SMO.

Now we can probably begin using libspinscale in Couresilient
without worrying about excessive technical debt later on.

smocore/include/marionette/marionette.h

@@ -0,0 +1,66 @@
+#ifndef _MARIONETTE_H
+#define _MARIONETTE_H
+
+#include <boost/asio/signal_set.hpp>
+#include <cstdint>
+#include <atomic>
+#include <functional>
+#include <memory>
+#include <spinscale/component.h>
+
+namespace sscl {
+
+class PuppeteerThread;
+
+} // namespace sscl
+
+namespace smo {
+namespace mrntt {
+
+class MarionetteComponent
+:	public sscl::pptr::PuppeteerComponent
+{
+public:
+	MarionetteComponent(const std::shared_ptr<sscl::PuppeteerThread> &thread)
+	:	sscl::pptr::PuppeteerComponent(thread)
+	{}
+	~MarionetteComponent() = default;
+
+public:
+	typedef std::function<void(bool)> mrnttLifetimeMgmtOpCbFn;
+	void initializeReq(sscl::Callback<mrnttLifetimeMgmtOpCbFn> callback);
+	void finalizeReq(sscl::Callback<mrnttLifetimeMgmtOpCbFn> callback);
+	// Intentionally doesn't take a callback.
+	void exceptionInd();
+
+	void handleLoopExceptionHook() override;
+
+	static void preJoltHook(sscl::PuppeteerThread &thr);
+
+protected:
+	void postJoltHook() override;
+	void tryBlock1Hook() override;
+	void preLoopHook() override;
+	void postLoopHook() override;
+	void postTryBlock1CatchHook() override;
+	void handleTryBlock1TypedException(const std::exception& e) override;
+	void handleTryBlock1UnknownException() override;
+
+private:
+	class MrnttLifetimeMgmtOp;
+	class TerminationEvent;
+
+	std::unique_ptr<boost::asio::signal_set> signals;
+	bool callShutdownSalmanoff = false;
+};
+
+extern std::shared_ptr<sscl::PuppeteerThread> thread;
+extern MarionetteComponent mrntt;
+
+void marionetteInitializeReqCb(bool success);
+void marionetteFinalizeReqCb(bool success);
+
+} // namespace mrntt
+} // namespace smo
+
+#endif