git clone git://git.osmocom.org/sdrangelove.git

include/util/message.h

@@ -0,0 +1,58 @@
+#ifndef INCLUDE_MESSAGE_H
+#define INCLUDE_MESSAGE_H
+
+#include <stdlib.h>
+#include <QAtomicInt>
+#include "util/export.h"
+
+class MessageQueue;
+class QWaitCondition;
+class QMutex;
+
+class SDRANGELOVE_API Message {
+public:
+	Message();
+	virtual ~Message();
+
+	virtual const char* getIdentifier() const;
+	virtual bool matchIdentifier(const char* identifier) const;
+	static bool match(Message* message);
+
+	void* getDestination() const { return m_destination; }
+
+	void submit(MessageQueue* queue, void* destination = NULL);
+	int execute(MessageQueue* queue, void* destination = NULL);
+
+	void completed(int result = 0);
+
+protected:
+	// addressing
+	static const char* m_identifier;
+	void* m_destination;
+
+	// stuff for synchronous messages
+	bool m_synchronous;
+	QWaitCondition* m_waitCondition;
+	QMutex* m_mutex;
+	QAtomicInt m_complete;
+	int m_result;
+};
+
+#define MESSAGE_CLASS_DECLARATION \
+	public: \
+		const char* getIdentifier() const; \
+		bool matchIdentifier(const char* identifier) const; \
+		static bool match(Message* message); \
+	protected: \
+		static const char* m_identifier; \
+	private:
+
+#define MESSAGE_CLASS_DEFINITION(Name, BaseClass) \
+	const char* Name::m_identifier = #Name; \
+	const char* Name::getIdentifier() const { return m_identifier; } \
+	bool Name::matchIdentifier(const char* identifier) const {\
+		return (m_identifier == identifier) ? true : BaseClass::matchIdentifier(identifier); \
+	} \
+	bool Name::match(Message* message) { return message->matchIdentifier(m_identifier); }
+
+#endif // INCLUDE_MESSAGE_H