fortuna: use a proper shared_ptr to Generator

fortuna.cpp

@@ -10,6 +10,7 @@
 
 #include <chrono>
 #include <exception>
+#include <memory>
 #include <mutex>
 
 namespace fortuna {
@@ -24,7 +25,8 @@ Fortuna::Fortuna() {
 	catch (CryptoPP::Exception& e) {
 		fmt::print(stderr, "{}\n", e.what());
 	}
-	th_gen = std::thread(&Fortuna::generator_service, this, &R.Gen);
+	th_gen = std::thread(&Fortuna::generator_service, this,
+						 std::make_shared<fortuna::generator::Generator>());
 	th_accu = std::thread(&Fortuna::accumulator_service, this);
 	th_sfm = std::thread(&Fortuna::seed_file_manager_service, this);
 }
@@ -90,7 +92,8 @@ auto Fortuna::random_data(unsigned int n_bytes) -> void {
 	fmt::print("getting random data took {:.{}f}s\n", diff.count(), 12);
 } // random_data
 
-auto Fortuna::generator_service(fortuna::generator::Generator* Gen) -> void {
+auto Fortuna::generator_service(
+	std::shared_ptr<fortuna::generator::Generator> Gen) -> void {
 	int i{0};
 	std::chrono::milliseconds sleep_time{1000};
 	std::chrono::system_clock::time_point time_point;

fortuna.h

@@ -7,6 +7,7 @@
 #include <fmt/core.h>
 
 #include <chrono>
+#include <memory>
 #include <mutex>
 #include <thread>
 
@@ -61,7 +62,8 @@ public:
 		fmt::print("PRNG initialized\n");
 	}
 
-	auto generator_service(fortuna::generator::Generator*) -> void;
+	auto generator_service(std::shared_ptr<fortuna::generator::Generator> Gen)
+		-> void;
 
 	auto accumulator_service() -> void;