WIP

2020-02-13 13:00:22 +01:00
parent e274c0ca89
commit 876fb12fe4
192 changed files with 1046 additions and 676 deletions
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <functional>
+#include <thread>
+#include <boost/asio/io_context.hpp>
+
+template <typename It, typename Func>
+void parallel_foreach(std::size_t nbWorkers, It begin, It end, Func&& func)
+{
+	if (nbWorkers == 0)
+		throw std::runtime_error("Invalid worker count");
+
+	boost::asio::io_context ioContext;
+
+	for (It it {begin}; it != end; ++it)
+	{
+		auto refValue {std::ref<typename It::value_type>(*it)};
+		ioContext.post([refValue, &func]() { std::cout << "EXEC FROM WORKER" << std::endl; func(refValue); std::cout << "END EXEC FROM WORKER" << std::endl; });
+	}
+
+	std::vector<std::thread> threads;
+	for (std::size_t i {}; i < nbWorkers - 1; ++i)
+		threads.emplace_back([&]() { ioContext.run(); });
+
+	ioContext.run();
+
+	for (std::thread& t : threads)
+		t.join();
+}
+