listenbrainz: added a listens synchronizer. fixes #142

src/libs/utils/include/utils/IChildProcessManager.hpp

@@ -20,10 +20,7 @@
 
 #include <filesystem>
 #include <memory>
-#pragma once
-
-#include <filesystem>
-#include <memory>
+#include <boost/asio/io_service.hpp>
 
 #include "IChildProcess.hpp"
 
@@ -35,6 +32,6 @@ class IChildProcessManager
 		virtual std::unique_ptr<IChildProcess> spawnChildProcess(const std::filesystem::path& path, const IChildProcess::Args& args) = 0;
 };
 
-std::unique_ptr<IChildProcessManager> createChildProcessManager();
+std::unique_ptr<IChildProcessManager> createChildProcessManager(boost::asio::io_service& ioService);
 
 

src/libs/utils/include/utils/IOContextRunner.hpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 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/>.
+ */
+
+#pragma once
+
+#include <optional>
+#include <thread>
+#include <boost/asio/io_service.hpp>
+
+class IOContextRunner
+{
+	public:
+		IOContextRunner(boost::asio::io_service& ioService, std::size_t threadCount);
+		~IOContextRunner();
+
+		IOContextRunner(const IOContextRunner&) = delete;
+		IOContextRunner(IOContextRunner&&) = delete;
+		IOContextRunner& operator=(const IOContextRunner&) = delete;
+		IOContextRunner& operator=(IOContextRunner&&) = delete;
+
+		void stop();
+
+	private:
+		boost::asio::io_service&		_ioService;
+		std::optional<boost::asio::io_service::work>	_work;
+		std::vector<std::thread>		_threads;
+};