i2pd/daemon/Daemon.h

#ifndef DAEMON_H__
#define DAEMON_H__

#include <memory>
#include <string>

namespace i2p
{
	namespace util
	{
		class Daemon_Singleton_Private;
		class Daemon_Singleton
		{
		public:
			virtual bool init(int argc, char* argv[]);
			virtual bool start();
			virtual bool stop();
			virtual void run () {};

			bool isDaemon;
			bool running;

		protected:
			Daemon_Singleton();
			virtual ~Daemon_Singleton();

			bool IsService () const;

			// d-pointer for httpServer, httpProxy, etc.
			class Daemon_Singleton_Private;
			Daemon_Singleton_Private &d;
		};

#if defined(QT_GUI_LIB) // check if QT
#define Daemon i2p::util::DaemonQT::Instance()
	// dummy, invoked from RunQT	
    class DaemonQT: public i2p::util::Daemon_Singleton
	{
		public:

			static DaemonQT& Instance()
			{
				static DaemonQT instance;
				return instance;
			}
    };

#elif defined(ANDROID)
#define Daemon i2p::util::DaemonAndroid::Instance()
	// dummy, invoked from android/jni/DaemonAndroid.*
    class DaemonAndroid: public i2p::util::Daemon_Singleton
	{
		public:

			static DaemonAndroid& Instance()
			{
				static DaemonAndroid instance;
				return instance;
			}
    };

#elif defined(_WIN32)
#define Daemon i2p::util::DaemonWin32::Instance()
		class DaemonWin32 : public Daemon_Singleton
		{
		public:
			static DaemonWin32& Instance()
			{
				static DaemonWin32 instance;
				return instance;
			}

			bool init(int argc, char* argv[]);
			bool start();
			bool stop();
			void run ();
		};
#else
#define Daemon i2p::util::DaemonLinux::Instance()
        class DaemonLinux : public Daemon_Singleton
		{
			public:
				static DaemonLinux& Instance()
				{
					static DaemonLinux instance;
					return instance;
				}

				bool start();
				bool stop();
				void run ();

			private:

				std::string pidfile;
                int pidFH;

			public:

				int gracefulShutdownInterval; // in seconds

		};
#endif
	}
}

#endif // DAEMON_H__