git-svn-id: svn://db.shs.com.ru/pip@565 12ceb7fc-bf1f-11e4-8940-5bc7170c53b5

src_main/io/piiodevice.h

@@ -69,7 +69,14 @@ public:
 		BlockingWrite /*! \a write block until data is sent, default off */ = 0x02
 	};
 
+	//! \brief Characteristics of PIIODevice subclass
+	enum DeviceInfoFlag {
+		Sequential /*! Continuous channel */ = 0x01,
+		Reliable /*! Channel is safe */ = 0x02
+	};
+
 	typedef PIFlags<DeviceOption> DeviceOptions;
+	typedef PIFlags<DeviceInfoFlag> DeviceInfoFlags;
 
 	explicit PIIODevice(const PIString & path, DeviceMode mode = ReadWrite);
 	virtual ~PIIODevice();
@@ -92,6 +99,9 @@ public:
 	//! Set device option "o" to "yes" and return previous state
 	bool setOption(DeviceOption o, bool yes = true);
 
+	//! Returns device characteristic flags
+	DeviceInfoFlags infoFlags() const {return deviceInfoFlags();}
+
 	//! Current path of device
 	PIString path() const {return property(PIStringAscii("path")).toString();}
 	
@@ -336,6 +346,9 @@ protected:
 	//! Reimplement to apply new device options
 	virtual void optionsChanged() {;}
 
+	//! Reimplement to return correct \a DeviceInfoFlags. Default implementation returns 0
+	virtual DeviceInfoFlags deviceInfoFlags() const {return 0;}
+
 	//! Reimplement to apply new \a threadedReadBufferSize()
 	virtual void threadedReadBufferSizeChanged() {;}