Adding in boost::asio support

main starts a thread that keep a global io_service object
running and makes sure it is stopped when everything else is
stopped.

pglab/GlobalIoService.cpp

@@ -0,0 +1,7 @@
+#include "GlobalIoService.h"
+
+std::shared_ptr<boost::asio::io_service> getGlobalAsioIoService()
+{
+    static auto ios = std::make_shared<boost::asio::io_service>();
+    return ios;
+}

pglab/GlobalIoService.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <memory>
+#include <boost/asio.hpp>
+
+std::shared_ptr<boost::asio::io_service> getGlobalAsioIoService();

pglab/MasterController.h

@@ -2,8 +2,10 @@
 #define MASTERCONTROLLER_H
 
 #include <QObject>
+#include <future>
 #include <map>
 
+
 class ConnectionConfig;
 class ConnectionList;
 class ConnectionListModel;
@@ -30,7 +32,7 @@ public:
 	void openSqlWindowForConnection(int connection_index);
 	void openServerWindowForConnection(int connection_index);
 	void openBackupDlgForConnection(int connection_index);
-
+    
 signals:
 
 public slots:
@@ -39,6 +41,7 @@ private:
 	ConnectionList *m_connectionList = nullptr;
 	ConnectionListModel *m_connectionListModel = nullptr;
 	ConnectionManagerWindow *m_connectionManagerWindow = nullptr;
+    
 };
 
 #endif // MASTERCONTROLLER_H

pglab/QueryTab.cpp

@@ -20,7 +20,6 @@
 #include "PgsqlDatabaseCatalogue.h"
 #include "util.h"
 
-
 QueryParamListController::QueryParamListController(QTableView *tv,
 					OpenDatabase *opendb, QWidget *parent)
 	: QObject(parent)

pglab/main.cpp

@@ -4,12 +4,13 @@
 # include <winsock2.h>
 #endif
 #include <memory>
+#include "GlobalIoService.h"
 
 int main(int argc, char *argv[])
 {
 
 	/* Use the MAKEWORD(lowbyte, highbyte) macro declared in Windef.h */
-#ifdef _WIN32
+#ifdef WIN32
 	WORD wVersionRequested = MAKEWORD(2, 2);
 	WSADATA wsaData;
 	int err = WSAStartup(wVersionRequested, &wsaData);
@@ -20,16 +21,27 @@ int main(int argc, char *argv[])
 		return 1;
 	}
 #endif
+
 	QApplication a(argc, argv);
 
 	QCoreApplication::setOrganizationName("pglab");
 	QCoreApplication::setOrganizationDomain("eelkeklein.nl");
 	QCoreApplication::setApplicationName("pglab");
 
-	auto master_controller = std::make_unique<MasterController>();
-	master_controller->init();
-	int result = a.exec();
-#ifdef _WIN32
+    std::thread asio_service_thread;
+    int result = -1;
+    {   
+        auto ios = getGlobalAsioIoService();
+        boost::asio::io_service::work work(*ios); // Prevent service from running out of work so run doesn't return
+        asio_service_thread = std::thread([ios](){ ios->run(); });
+        
+        // make sure the io_service is stopped before we wait on the future
+        auto master_controller = std::make_unique<MasterController>();
+        master_controller->init();
+        result = a.exec();
+    }
+    asio_service_thread.join();
+#ifdef WIN32
 	WSACleanup();
 #endif
 	return result;