Mrntt: Shut down mind threads before printing usage & exiting

smocore/marionette/marionette.cpp

@@ -27,7 +27,7 @@ void ComponentThread::marionetteMain(ComponentThread& self)
     std::cout << __func__ << ": Waiting for command line JOLT" << std::endl;
     self.getIoService().run();
     self.initializeTls();
-    mrntt::exitCode = 0;
+    mrntt::exitCode = EXIT_SUCCESS;
 
 	try {
 		OptionParser &options = OptionParser::getOptions();
@@ -48,14 +48,29 @@ void ComponentThread::marionetteMain(ComponentThread& self)
 			std::cerr << __func__ << ": Exception occurred: " << e.what()
 				<< '\n' << options.getUsage() << '\n';
 
-            mrntt::exitCode = EXIT_FAILURE;
+			options.printUsage = true;
-			return;
+			mrntt::exitCode = EXIT_FAILURE;
 		}
 
 		if (options.printUsage)
 		{
-			std::cout << __func__ << ": " << options.getUsage() << std::endl;
+			self.getIoService().post([&options]()
-			mrntt::exitCode = EXIT_SUCCESS;
+			{
+				ComponentThread::joltAllMindThreadsReq(
+				[&options]()
+				{
+					ComponentThread::exitAllMindThreadsReq(
+						[&options]()
+						{
+							std::cout << __func__ << ": " << options.getUsage()
+								<< '\n';
+							mrntt::mrntt->getIoService().stop();
+						}
+					);
+				});
+			});
+			self.getIoService().reset();
+			self.getIoService().run();
 			return;
 		}